split-type, heat pump air conditioners no. …s/multisplit...mxz-a26wv - mxz-a32wv - e1 e1 e1 hfc no...

SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ····································32. PART NAMES AND FUNCTIONS······················73. INDOOR/OUTDOOR

CORRESPONDENCE TABLE ···························74. INDOOR UNITS COMBINATION ·····················105. SPECIFICATION···············································216. NOISE CRITERIA CURVES·····························237. OUTLINES AND DIMENSIONS ·······················248. WIRING DIAGRAM ··········································279. REFRIGERANT SYSTEM DIAGRAM··············30

10. PERFORMANCE CURVES ······························3311. MICROPROCESSOR CONTROL·····················4712. TROUBLESHOOTING······································5213. DISASSEMBLY INSTRUCTIONS·····················7114. PARTS LIST······················································7815. OPTIONAL PARTS···········································83

Inverter-controlled multi systemModels

MXZ-A18WV -MXZ-A26WV -MXZ-A32WV - E1

E1

E1

No. OB319HFCutilized

R410A

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

MXZ-A18WV - E1

Indication of model name

NOTE:•The description for MXZ-A18WV- has been transferred here from service manual OB307 REVISEDEDITION-A.

•SPECIFICATION, PERFORMANCE CURVES and PARTS LIST of MXZ-A18WV- have been partiallymodified.

•This service manual describes technical data of outdoor units.As for indoor units, refer to the service manual OB307 REVISED EDITION-A, OB321, OB327 or B329.

E1

E1

OB319--1.qxp 03.12.3 0:54 PM

OB319--1.qxp 03.12.3 0:54 PM

3

TECHNICAL CHANGES1

MXZ-18TV - MXZ-A18WV -1. Outdoor model has changed.2. Refrigerant has changed. (R22R410A)

MXZ-24UV - MXZ-A26WV -1. Cooling capacity has become larger. (7.1kW7.2kW)2. Combinations of connectable indoor units have increased.3. Capacity class of connectable indoor units has become larger.4. Compressor has changed. (THV247FBATNB220FMCH)5. Outdoor fan motor has changed. (RA6V60-BAPM8H60-VA)6. Refrigerant has changed. (R22R410A)7. Refrigerant system diagram has changed.

• High pressure switch has decreased. (21)• Accumulator has removed.• Receiver has added.

MXZ-32SV - MXZ-A32WV -1. Combinations of connectable indoor units have increased.2. Capacity class of connectable indoor units has become larger.3. Compressor has changed. (THV247FBATNB220FMCH)4. Outdoor fan motor has changed. (RA6V60-BAPM8H60-VA)5. Refrigerant has changed. (R22R410A)6. Refrigerant system diagram has changed.

• High pressure switch has decreased. (21)• Accumulator has removed.• Receiver has added.

E1E2

E1E2

E1E2

OB319--1.qxp 03.12.3 0:54 PM

4

Refri

gera

ting

oil

Ref

riger

ant

New refrigerant

R410A

HFC-32: HFC-125 (50%:50%)

Pseudo-azeotropic refrigerant

Not included

A1/A1

72.6

-51.4

1.557

64

Non combustible

0

1730

From liquid phase in cylinder

Possible

Incompatible oil

Non

Non

Previous refrigerant

R22

R22 (100%)

Single refrigerant

Included

A1

86.5

-40.8

0.94

44.4

Non combustible

0.055

1700

Gas phase

Possible

Compatible oil

Light yellow

Non

Refrigerant

Composition (Ratio)

Refrigerant handling

Chlorine

Safety group (ASHRAE)

Molecular weight

Boiling point (:)

Steam pressure [25:](Mpa)

Saturated steam density [25:](Kg/K)

Combustibility

ODP w1

GWP w2

Refrigerant charge method

Additional charge on leakage

Kind

Color

Smell

w1 :Ozone Destruction Parameter : based on CFC-11w2 :Global Warmth Parameter : based on CO2

INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT• This room air conditioner adopts an HFC refrigerant (R410A) which never destroys the ozone layer.• Pay particular attention to the following points, though the basic installation procedure is same as that for R22 conditioners.1As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/

materials are required. Refer to the table below.2Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and

installation, since it is more susceptible to contaminations than R22.3For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant

piping.)4Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent

composition change.

NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ ff [Gauge])

New Specification Current Specification

The incompatible refrigerating oil easily separates from refrigerant and is in the upper layer inside the suction muffler.Raising position of the oil back hole enables to back the refrigerating oil of the upper layer to flow back to the compressor.

Since refrigerant and refrigerating oil are compatible each, refrigerating oil backs to the compressor through the lower position oil back hole.

Compressor

Suction muffler

Oil back hole

Refrigerating oil

Refrigerant

Compressor

Suction muffler

Oil back hole

Refrigerating oil /Refrigerant

Com

pres

sor

OB319--1.qxp 03.12.3 0:54 PM

5

-30 -20 -10 0 10 20 30 40 50 60-0.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0(MPa [Gauge])

R410A

R22

Conversion chart of refrigerant temperature and pressureS

atur

ated

liqu

id p

ress

ure

(:)

NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).

The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ ff [Gauge])

R410A tools Can R22 tools be used?

Gas leak detector

R410A has high pressures beyond the measurement range of existing gauges. Port diameters have been changed to prevent any other refrigerant from being charged into the unit.

Hose material and cap size have been changed to improve the pressure resistance.Dedicated for HFC refrigerant.

6.35 mm and 9.52 mm

Description

Clamp bar hole has been enlarged to reinforce the spring strength in the tool.

Provided for flaring work (to be used with R22 flare tool).Provided to prevent the back flow of oil. This adapter enables you to use vacuum pumps.It is difficult to measure R410A with a charging cylinder because the refrigerant bubbles due to high pressure and high-speed vaporization

No

No

No

Yes

Yes

New

New

New

Gauge manifold

Charge hose

Torque wrench

Flare tool

Flare gaugeVacuum pumpadapter

Electronic scale forrefrigerant charging

No : Not Substitutable for R410A Yes : Substitutable for R410A

No 12.7 mm and 15.88 mm

1.Tools dedicated for the air conditioner with R410A refrigerantThe following tools are required for R410A refrigerant. Some R22 tools can be substituted for R410A tools.The diameter of the service port on the stop valve in outdoor unit has been changed to prevent any other refrigerant being charged into the unit. Cap size has been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.

2.Refrigerant piping1Specifications

Use the refrigerant pipes that meet the following specifications.

• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm. Never use any pipe with a thickness less than 0.8mm, as the pressure resistance is insufficient.

Wall thicknessOutside diameter

Pipemm

For liquid

For gas

6.35/9.52

9.52

12.7

15.88

0.8 mm/0.8 mm

0.8 mm

0.8 mm

1.0 mm

Heat resisting foam plastic

Specific gravity 0.045 Thickness 8 mm

Insulation material

OB319--1.qxp 03.12.3 0:54 PM

6

Electronic scale for refrigerant charging

Outdoor unit

Refrigerant gas cylinderoperating valve

Refrigerant gas cylinderfor R410A with siphon

Refrigerant (liquid)

Service port

Gauge manifold valve (for R410A)

Union

Liquid pipe

Gas pipe

Stop valve

Indoor unit

Charge hose (for R410A)

R410A

Pipe diameter

mm

6.35

9.52

12.7

15.88

17

22

26

29

Dimension of flare nut

R22

17

22

24

27

2Flaring work and flare nutFlaring work for R410A pipe differs from that for R22 pipe.For details of flaring work, refer to Installation manual “FLARING WORK”.

3.Refrigerant oilApply the special refrigeration oil (accessories: packed with indoor unit) to the flare and the union seat surfaces.

4.Air purge• Do not discharge the refrigerant into the atmosphere.

Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant circuit.

• Use the vacuum pump for air purging for the purpose of environmental protection.

5.Additional chargeFor additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and theoutdoor unit. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. However, charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.

OB319--1.qxp 03.12.3 0:54 PM

7

PART NAMES AND FUNCTIONS2

There is no combination other than this table.

MXZ-A18WV- E1

OUTDOOR UNIT

Com

bina

tion

of th

e co

nnec

tabl

e in

door

uni

ts 07+0707+0907+1209+0909+1212+12

MXZ-A18WV - E1

OUTDOOR UNIT

ACCESSORIES

Air outlet

Drain outlet

Air inlet(Back and side)

MXZ-A18WV- E1

Drain socket

Drain cap

1

2

1

2

MXZ-A18WV-MXZ-A26WV-MXZ-A32WV- E1

E1

E1

INDOOR/ OUTDOOR CORRESPONDENCE TABLE3

MXZ-A26WV-MXZ-A32WV- E1

E1

Air outlet

Drain outlet

Air inlet(Back and side)

OB319--1.qxp 03.12.3 0:54 PM

8There is no combination other than this table.

MXZ-A26WV- E1

OUTDOOR UNIT

Com

bina

tion

of th

e co

nnec

tabl

e in

door

uni

ts

07+0707+0907+1207+1807+2407+2609+0909+1209+1809+2409+2612+1212+1812+2412+2618+1818+2418+26

07+07+0707+07+0907+07+1207+07+1807+07+2407+07+2607+09+0907+09+1207+09+1807+09+2407+09+2607+12+1207+12+1807+12+2407+12+2607+18+1807+18+2407+18+2609+09+0909+09+1209+09+1809+09+2409+09+2609+12+1209+12+1809+12+2409+12+2609+18+1809+18+2412+12+1212+12+1812+12+2412+12+2612+18+1812+18+24

MXZ-A26WV - E1

OB319--1.qxp 03.12.3 0:54 PM

9

There is no combination other than this table.

MXZ-A32WV- E1

OUTDOOR UNIT

MXZ-A32WV- E1

OUTDOOR UNIT

Com

bina

tion

of th

e co

nnec

tabl

e in

door

uni

ts

07+0707+0907+1207+1807+2407+2609+0909+1209+1809+2409+2612+1212+1812+2412+2618+1818+2418+2624+2424+26

07+07+0707+07+0907+07+1207+07+1807+07+2407+07+2607+09+0907+09+1207+09+1807+09+2407+09+2607+12+1207+12+1807+12+2407+12+2607+18+1807+18+2407+18+2609+09+0909+09+1209+09+1809+09+2409+09+2609+12+1209+12+1809+12+2409+12+2609+18+18

Com

bina

tion

of th

e co

nnec

tabl

e in

door

uni

ts

09+18+2412+12+1212+12+1812+12+2412+12+2612+18+1812+18+24

07+07+07+0707+07+07+0907+07+07+1207+07+07+1807+07+07+2407+07+07+2607+07+09+0907+07+09+1207+07+09+1807+07+09+2407+07+09+2607+07+12+1207+07+12+1807+07+12+2407+07+18+1807+09+09+0907+09+09+1207+09+09+1807+09+09+2407+09+12+1207+09+12+1807+09+12+2407+12+12+1207+12+12+1809+09+09+0909+09+09+1209+09+09+1809+09+09+2409+09+12+1209+09+12+1809+12+12+1212+12+12+12

MXZ-A32WV - E1

OB319--1.qxp 03.12.3 0:54 PM

INDOOR UNITS COMBINATION

10

4

07

09

12

07+07

07+09

07+12

09+09

09+12

12+12

90

90

90

90

90

90

90

90

90

3.62

3.91

5.70

7.15

7.73

7.78

8.60

8.84

8.99

2.3(0.9-2.95)

2.5(0.9-3.30)

3.4(0.9-4.00)

4.6(1.49-5.30)

4.8(1.49-5.40)

5.0(1.51-5.60)

5.0(1.51-5.55)

5.3(1.53-5.80)

5.4(1.55-6.00)

0.750(0.225-1.000)

0.810(0.225-1.070)

1.180(0.220-1.450)

1.480(0.370-2.060)

1.600(0.370-2.070)

1.610(0.365-2.100)

1.780(0.370-2.105)

1.830(0.365-2.110)

1.860(0.370-2.130)

–

–

–

2.3

2.5

2.98

2.5

3.1

2.65

2.3

2.5

3.4

2.3

2.3

2.02

2.5

2.2

2.65

Indoor unitscombination Unit A Unit B

Cooling capacity (kW)

Total

Outdoor unitpower consumption

(kW)

Current(A)

Powerfactor(%)230V

NOTE: Electrical data is for outdoor unit only.

MXZ-A18WV - E1


07

09

12

07+07

07+09

07+12

09+09

09+12

12+12

90

90

90

90

90

90

90

90

90

4.73

5.14

6.76

9.32

9.37

9.03

9.28

8.91

8.55

3.3(0.9-4.0)

3.6(0.9-4.5)

4.0(0.9-4.8)

6.1(1.53-6.70)

6.2(1.53-6.80)

6.5(1.55-7.00)

6.5(1.55-7.0)

6.55(1.56-7.1)

6.6(1.58-7.2)

0.980(0.225-1.115)

1.065(0.225-1.195)

1.400(0.220-1.680)

1.930(0.300-2.070)

1.940(0.300-2.040)

1.870(0.295-1.980)

1.920(0.295-2.010)

1.845(0.295-1.950)

1.770(0.290-1.850)

–

–

–

3.05

3.23

3.88

3.25

3.77

3.30

3.3

3.6

4.0

3.05

2.97

2.62

3.25

2.78

3.30

Indoor unitscombination Unit A Unit B

Heating capacity (kW)

Total


(kW)

Current(A)

Powerfactor(%)230V

OB319--1.qxp 03.12.3 0:55 PM

11

07

09

12

18

24

26

07+07

07+09

07+12

07+18

07+24

07+26

09+09

09+12

09+18

09+24

09+26

12+12

12+18

12+24

12+26

18+18

18+24

18+26

07+07+07

07+07+09

07+07+12

07+07+18

07+07+24

07+07+26

07+09+09

07+09+12

07+09+18

07+09+24

Indoor unitscombination Unit A Unit B Unit C


Total


(kW)Current

(A)

Powerfactor(%)

NOTE: Electrical data is for outdoor unit only.MXZ-A26WV - E1

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

3.12

3.34

4.39

6.32

8.48

11.33

5.18

5.71

7.51

10.54

10.36

10.36

5.97

8.17

10.54

10.36

10.36

10.23

10.50

10.32

10.32

10.28

10.10

10.10

8.52

8.92

10.14

10.19

10.41

10.50

9.35

10.32

10.41

10.50

2.3(1.4-3.0)

2.5(1.4-3.3)

3.4(1.5-4.3)

5.0(1.6-5.6)

6.0(1.6-6.6)

7.1(1.7-7.4)

4.6(2.0-5.4)

4.8(2.0-5.8)

5.7(2.0-6.6)

7.2(2.0-7.7)

7.2(2.0-8.0)

7.2(2.0-8.2)

5.0(2.0-6.2)

5.9(2.0-7.3)

7.2(2.0-8.5)

7.2(2.0-8.5)

7.2(2.0-8.5)

6.8(2.0-8.5)

7.2(2.0-8.5)

7.2(2.0-8.5)

7.2(2.0-8.5)

7.2(2.1-8.5)

7.2(2.1-8.5)

7.2(2.1-8.5)

6.9(2.9-8.1)

7.1(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

0.710(0.400-0.920)

0.760(0.400-1.010)

1.000(0.400-1.290)

1.440(0.420-1.630)

1.930(0.400-2.130)

2.580(0.410-2.710)

1.180(0.600-1.600)

1.300(0.600-1.770)

1.710(0.600-2.200)

2.400(0.560-2.710)

2.360(0.560-3.050)

2.360(0.560-3.200)

1.360(0.580-1.950)

1.860(0.580-2.670)

2.400(0.560-3.200)

2.360(0.560-3.170)

2.360(0.560-3.170)

2.330(0.580-3.260)

2.390(0.560-3.210)

2.350(0.560-3.180)

2.350(0.560-3.180)

2.340(0.590-3.160)

2.300(0.570-3.110)

2.300(0.570-3.110)

1.940(0.690-2.410)

2.030(0.690-2.510)

2.310(0.690-2.620)

2.320(0.700-2.570)

2.370(0.680-2.530)

2.390(0.680-2.530)

2.130(0.690-2.620)

2.350(0.690-2.620)

2.370(0.700-2.570)

2.390(0.680-2.530)

–

–

–

–

–

–

2.3

2.7

3.6

5.18

5.57

5.67

2.5

3.37

4.8

5.23

5.34

3.4

4.32

4.8

4.92

3.6

4.11

4.25

2.3

2.16

1.93

1.58

1.32

1.26

2.59

2.31

1.9

1.62

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

2.3

2.77

3.32

4.05

4.55

4.68

2.59

3.09

3.81

4.32

2.3

2.5

3.4

5.0

6.0

7.1

2.3

2.1

2.1

2.01

1.62

1.52

2.5

2.52

2.4

1.96

1.85

3.4

2.88

2.4

2.27

3.6

3.08

2.94

2.3

2.16

1.93

1.58

1.32

1.26

2.01

1.8

1.48

1.26

OB319--1.qxp 03.12.3 0:55 PM

12

07+09+26

07+12+12

07+12+18

07+12+24

07+12+26

07+18+18

07+18+24

07+18+26

09+09+09

09+09+12

09+09+18

09+09+24

09+09+26

09+12+12

09+12+18

09+12+24

09+12+26

09+18+18

09+18+24

12+12+12

12+12+18

12+12+24

12+12+26

12+18+18

12+18+24



Total


(kW)Current

(A)

Powerfactor(%)


99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

10.50

10.32

10.19

10.32

10.32

10.23

10.10

10.10

8.92

10.32

10.41

10.50

10.50

10.32

10.45

10.32

10.32

10.23

10.10

9.18

10.01

9.93

9.93

9.84

9.75

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.1(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

7.2(2.9-8.5)

2.390(0.680-2.530)

2.350(0.690-2.570)

2.320(0.700-2.540)

2.350(0.680-2.520)

2.350(0.680-2.520)

2.330(0.680-2.520)

2.300(0.660-2.490)

2.300(0.660-2.490)

2.030(0.690-2.650)

2.350(0.690-2.620)

2.370(0.700-2.570)

2.390(0.680-2.530)

2.390(0.680-2.530)

2.350(0.690-2.570)

2.380(0.700-2.540)

2.350(0.680-2.520)

2.350(0.680-2.520)

2.330(0.660-2.500)

2.300(0.660-2.500)

2.090(0.720-2.560)

2.280(0.700-2.530)

2.260(0.680-2.500)

2.260(0.680-2.500)

2.240(0.680-2.500)

2.220(0.660-2.470)

1.54

2.79

2.33

2.0

1.92

3.01

2.64

2.54

2.36

2.16

1.8

1.54

1.47

2.61

2.21

1.92

1.83

2.88

2.54

2.4

2.05

1.8

1.72

2.7

2.4

4.45

2.79

3.5

4.01

4.16

3.01

3.52

3.67

2.36

2.89

3.6

4.11

4.25

2.61

3.32

3.84

3.98

2.88

3.38

2.4

3.08

3.6

3.74

2.7

3.2

1.2

1.62

1.36

1.17

1.12

1.17

1.02

0.98

2.36

2.16

1.8

1.54

1.47

1.97

1.66

1.44

1.37

1.44

1.27

2.4

2.05

1.8

1.72

1.8

1.6

OB319--1.qxp 03.12.3 0:55 PM

13

07

09

12

18

24

26

07+07

07+09

07+12

07+18

07+24

07+26

09+09

09+12

09+18

09+24

09+26

12+12

12+18

12+24

12+26

18+18

18+24

18+26

07+07+07

07+07+09

07+07+12

07+07+18

07+07+24

07+07+26

07+09+09

07+09+12

07+09+18

07+09+24



Total


(kW)Current

(A)

Powerfactor(%)


99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

4.61

4.87

5.31

9.97

11.86

14.14

8.87

9.31

9.35

10.85

11.07

11.07

9.53

9.71

11.07

10.98

10.98

10.41

10.98

10.89

10.89

9.71

9.71

9.71

9.44

9.53

9.66

8.96

8.96

8.96

9.66

9.57

8.87

8.87

3.3(1.2-4.2)

3.6(1.2-4.5)

4.0(1.2-4.8)

7.2(1.4-8.2)

7.9(1.4-8.6)

8.6(1.6-9.2)

6.6(1.8-7.2)

6.9(1.8-8.7)

7.3(1.8-9.2)

8.9(1.8-9.9)

9.0(1.8-9.9)

9.0(1.8-9.9)

7.2(1.8-9.1)

7.6(1.8-9.5)

9.0(1.8-10.1)

9.0(1.8-10.1)

9.0(1.8-10.1)

8.0(1.8-9.8)

9.0(1.8-10.5)

9.0(1.8-10.5)

9.0(1.8-10.5)

9.0(1.9-11.0)

9.0(1.9-11.0)

9.0(1.9-11.0)

8.7(2.6-10.6)

8.8(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

1.050(0.340-1.380)

1.110(0.340-1.510)

1.210(0.330-1.570)

2.270(0.330-2.710)

2.700(0.330-3.060)

3.220(0.360-3.520)

2.020(0.480-2.760)

2.120(0.480-3.000)

2.130(0.480-3.110)

2.470(0.460-3.140)

2.520(0.460-3.140)

2.520(0.460-3.140)

2.170(0.480-3.140)

2.210(0.480-3.230)

2.520(0.460-3.260)

2.500(0.460-3.260)

2.500(0.460-3.260)

2.370(0.480-3.230)

2.500(0.460-3.420)

2.480(0.460-3.420)

2.480(0.460-3.420)

2.210(0.440-3.260)

2.210(0.440-3.260)

2.210(0.440-3.260)

2.150(0.530-3.150)

2.170(0.530-3.170)

2.200(0.530-3.190)

2.040(0.510-3.040)

2.040(0.510-3.040)

2.040(0.510-3.040)

2.200(0.530-3.260)

2.180(0.530-3.180)

2.020(0.510-3.040)

2.020(0.510-3.040)

–

–

–

–

–

–

3.3

3.88

4.61

6.41

6.97

7.09

3.6

4.34

6.0

6.55

6.69

4.0

5.4

6.0

6.16

4.5

5.14

5.32

2.9

2.67

2.42

1.96

1.65

1.57

3.24

2.89

2.38

2.02

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

2.9

3.44

4.15

5.06

5.68

5.85

3.24

3.85

4.76

5.4

3.3

3.6

4.0

7.2

7.9

8.6

3.3

3.02

2.69

2.49

2.03

1.91

3.6

3.26

3.0

2.45

2.31

4.0

3.6

3.0

2.84

4.5

3.86

3.68

2.9

2.67

2.42

1.96

1.65

1.57

2.52

2.25

1.85

1.57

OB319--1.qxp 03.12.3 0:55 PM

14

07+09+26

07+12+12

07+12+18

07+12+24

07+12+26

07+18+18

07+18+24

07+18+26

09+09+09

09+09+12

09+09+18

09+09+24

09+09+26

09+12+12

09+12+18

09+12+24

09+12+26

09+18+18

09+18+24

12+12+12

12+12+18

12+12+24

12+12+26

12+18+18

12+18+24



Total


(kW)Current

(A)

Powerfactor(%)


99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

8.87

9.57

8.52

8.52

8.52

8.12

8.12

8.12

9.53

9.49

8.78

8.78

8.78

9.49

8.43

8.43

8.43

8.04

8.04

9.44

8.30

8.30

8.30

7.91

7.91

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.6-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.6-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

9.0(2.7-11.0)

2.020(0.510-3.040)

2.180(0.530-3.150)

1.940(0.510-2.950)

1.940(0.510-2.950)

1.940(0.510-2.950)

1.850(0.490-2.830)

1.850(0.490-2.830)

1.850(0.490-2.830)

2.170(0.530-3.230)

2.160(0.530-3.180)

2.000(0.510-3.030)

2.000(0.510-3.030)

2.000(0.510-3.030)

2.160(0.530-3.150)

1.920(0.510-2.950)

1.920(0.510-2.950)

1.920(0.510-2.950)

1.830(0.490-2.830)

1.830(0.490-2.830)

2.150(0.530-3.050)

1.890(0.510-2.890)

1.890(0.510-2.890)

1.890(0.510-2.890)

1.800(0.490-2.770)

1.800(0.490-2.770)

1.92

3.48

2.91

2.51

2.4

3.76

3.3

3.17

3.0

2.7

2.25

1.92

1.84

3.27

2.76

2.4

2.29

3.6

3.17

3.0

2.57

2.25

2.16

3.37

3.0

5.57

3.48

4.37

5.02

5.2

3.76

4.4

4.58

3.0

3.6

4.5

5.14

5.31

3.27

4.15

4.8

4.97

3.6

4.23

3.0

3.85

4.5

4.68

3.37

4.0

1.5

2.03

1.7

1.46

1.4

1.46

1.28

1.23

3.0

2.7

2.25

1.92

1.84

2.45

2.07

1.8

1.72

1.8

1.58

3.0

2.57

2.25

2.16

2.25

2.0

OB319--1.qxp 03.12.3 0:55 PM

15

Indoor unitscombination Unit A Unit B Unit C Unit D


Total


(kW)Current

(A)

Powerfactor(%)


07

09

12

18

24

26

07+07

07+09

07+12

07+18

07+24

07+26

09+09

09+12

09+18

09+24

09+26

12+12

12+18

12+24

12+26

18+18

18+24

18+26

24+24

24+26

07+07+07

07+07+09

07+07+12

07+07+18

07+07+24

07+07+26

07+09+09

07+09+12

MXZ-A32WV - E1

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

3.12

3.34

4.39

6.32

8.48

11.33

5.18

5.71

7.51

10.89

12.08

12.34

5.97

8.17

11.33

12.08

12.34

10.23

12.12

11.99

12.21

12.21

12.30

12.30

11.81

11.81

8.52

8.92

10.14

10.19

10.41

10.50

9.35

10.32

2.3(1.4-3.0)

2.5(1.4-3.3)

3.4(1.5-4.3)

5.0(1.6-5.6)

6.0(1.6-6.6)

7.1(1.7-7.4)

4.6(2.0-5.4)

4.8(2.0-5.8)

5.7(2.0-6.6)

7.3(2.0-7.7)

7.75(2.0-8.0)

7.85(2.0-8.2)

5.0(2.0-6.2)

5.9(2.0-7.3)

7.5(2.0-8.5)

7.75(2.0-8.6)

7.85(2.0-8.7)

6.8(2.0-8.8)

7.75(2.0-8.8)

7.85(2.0-8.8)

7.95(2.0-8.8)

7.9(2.1-8.8)

8.0(2.1-8.8)

8.0(2.1-8.8)

8.0(2.1-8.8)

8.0(2.1-8.8)

6.9(2.9-8.1)

7.1(2.9-8.6)

7.7(2.9-9.0)

7.85(2.9-9.0)

7.95(2.9-9.0)

8.0(2.9-9.0)

7.3(2.9-8.9)

7.75(2.9-9.0)

0.710(0.400-0.920)

0.760(0.400-1.010)

1.000(0.400-1.290)

1.440(0.420-1.630)

1.930(0.400-2.130)

2.580(0.410-2.710)

1.180(0.600-1.600)

1.300(0.600-1.770)

1.710(0.600-2.200)

2.480(0.560-2.710)

2.750(0.560-3.050)

2.810(0.560-3.200)

1.360(0.580-1.950)

1.860(0.580-2.670)

2.580(0.560-3.200)

2.750(0.560-3.280)

2.810(0.560-3.320)

2.330(0.580-3.270)

2.760(0.560-3.220)

2.730(0.560-3.180)

2.780(0.560-3.180)

2.780(0.590-3.160)

2.800(0.570-3.120)

2.800(0.570-3.120)

2.690(0.550-3.080)

2.690(0.550-3.080)

1.940(0.690-2.410)

2.030(0.690-2.720)

2.310(0.690-2.970)

2.320(0.700-2.920)

2.370(0.680-2.880)

2.390(0.680-2.880)

2.130(0.690-2.940)

2.350(0.690-2.970)

–

–

–

–

–

–

2.3

2.7

3.6

5.25

6.0

6.19

2.5

3.37

5.0

5.64

5.84

3.4

4.65

5.24

5.44

3.95

4.57

4.72

4.0

4.16

2.3

2.16

2.07

1.72

1.46

1.4

2.62

2.49

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

2.3

2.77

3.55

4.41

5.03

5.2

2.62

3.33

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

2.3

2.5

3.4

5.0

6.0

7.1

2.3

2.1

2.1

2.04

1.75

1.66

2.5

2.52

2.5

2.11

2.01

3.4

3.1

2.61

2.51

3.95

3.42

3.27

4.0

3.84

2.3

2.16

2.07

1.72

1.46

1.4

2.04

1.93

OB319--1.qxp 03.12.3 0:55 PM

16



Total


(kW)Current

(A)

Powerfactor(%)


07+09+18

07+09+24

07+09+26

07+12+12

07+12+18

07+12+24

07+12+26

07+18+18

07+18+24

07+18+26

09+09+09

09+09+12

09+09+18

09+09+24

09+09+26

09+12+12

09+12+18

09+12+24

09+12+26

09+18+18

09+18+24

12+12+12

12+12+18

12+12+24

12+12+26

12+18+18

12+18+24

07+07+07+07

07+07+07+09

07+07+07+12

07+07+07+18

07+07+07+24

07+07+07+26

07+07+09+09

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

10.41

10.50

10.50

10.32

10.19

10.32

10.32

10.23

10.10

10.10

8.92

10.32

10.41

10.50

10.50

10.32

10.45

10.32

10.32

10.23

10.10

10.01

10.01

9.93

9.93

9.84

9.75

9.57

9.62

9.71

9.44

9.35

9.35

9.62

7.9(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

7.85(2.9-9.0)

7.9(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

7.1(2.9-9.0)

7.75(2.9-9.0)

7.9(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

7.85(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

7.95(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

8.0(2.9-9.0)

7.8(3.7-9.2)

7.85(3.7-9.2)

7.95(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

7.85(3.7-9.2)

2.370(0.700-2.920)

2.390(0.680-2.880)

2.390(0.680-2.880)

2.350(0.690-2.920)

2.320(0.700-2.890)

2.350(0.680-2.860)

2.350(0.680-2.860)

2.330(0.680-2.860)

2.300(0.660-2.830)

2.300(0.660-2.830)

2.030(0.690-3.010)

2.350(0.690-2.970)

2.370(0.700-2.920)

2.390(0.680-2.880)

2.390(0.680-2.880)

2.350(0.690-2.920)

2.380(0.700-2.890)

2.350(0.680-2.860)

2.350(0.680-2.860)

2.330(0.660-2.840)

2.300(0.660-2.830)

2.280(0.720-2.910)

2.280(0.700-2.870)

2.260(0.680-2.840)

2.260(0.680-2.840)

2.240(0.680-2.840)

2.220(0.660-2.810)

2.180(0.810-2.670)

2.190(0.810-2.670)

2.210(0.810-2.650)

2.150(0.790-2.620)

2.130(0.770-2.590)

2.130(0.770-2.590)

2.190(0.810-2.670)

2.09

1.8

1.71

3.04

2.56

2.23

2.13

3.34

2.93

2.82

2.36

2.32

1.97

1.71

1.63

2.85

2.46

2.13

2.04

3.2

2.82

2.65

2.28

2.0

1.92

3.0

2.66

1.95

1.83

1.68

1.43

1.24

1.19

1.72

4.18

4.8

4.95

3.04

3.84

4.46

4.62

3.34

3.91

4.07

2.36

3.11

3.95

4.57

4.72

2.85

3.69

4.26

4.42

3.2

3.76

2.65

3.42

4.0

4.16

3.0

3.55

1.95

1.83

1.68

1.43

1.24

1.19

2.2

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

1.95

2.36

2.91

3.69

4.26

4.42

2.2

1.62

1.4

1.33

1.77

1.49

1.3

1.24

1.3

1.14

1.09

2.36

2.32

1.97

1.71

1.63

2.15

1.84

1.6

1.53

1.6

1.41

2.65

2.28

2.0

1.92

2.0

1.77

1.95

1.83

1.68

1.43

1.24

1.19

1.72

OB319--1.qxp 03.12.3 0:55 PM

17



Total


(kW)Current

(A)

Powerfactor(%)


07+07+09+12

07+07+09+18

07+07+09+24

07+07+09+26

07+07+12+12

07+07+12+18

07+07+12+24

07+07+18+18

07+09+09+09

07+09+09+12

07+09+09+18

07+09+09+24

07+09+12+12

07+09+12+18

07+09+12+24

07+12+12+12

07+12+12+18

09+09+09+09

09+09+09+12

09+09+09+18

09+09+09+24

09+09+12+12

09+09+12+18

09+12+12+12

12+12+12+12

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

9.71

9.44

9.35

9.35

9.71

9.31

9.22

9.09

9.40

9.71

9.44

9.35

9.71

9.31

9.22

9.66

9.13

9.40

9.75

9.44

9.35

9.71

9.31

9.66

9.62

7.95(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

7.9(3.7-9.2)

7.95(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

7.9(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

8.0(3.7-9.2)

2.210(0.810-2.650)

2.150(0.790-2.620)

2.130(0.770-2.590)

2.130(0.770-2.590)

2.210(0.810-2.620)

2.120(0.790-2.590)

2.100(0.770-2.560)

2.070(0.770-2.560)

2.140(0.810-2.670)

2.210(0.810-2.650)

2.150(0.790-2.620)

2.130(0.770-2.590)

2.210(0.810-2.620)

2.120(0.790-2.590)

2.100(0.770-2.560)

2.200(0.810-2.610)

2.080(0.790-2.580)

2.140(0.810-2.670)

2.220(0.810-2.650)

2.150(0.790-2.620)

2.130(0.770-2.590)

2.210(0.810-2.620)

2.120(0.790-2.590)

2.200(0.810-2.610)

2.190(0.810-2.580)

1.59

1.36

1.19

1.14

1.47

1.27

1.12

1.12

2.09

1.93

1.67

1.46

1.8

1.56

1.38

2.23

1.95

1.97

1.84

1.6

1.41

1.75

1.5

2.13

2.0

2.04

1.75

1.53

1.46

2.52

2.18

1.92

2.88

2.09

1.93

1.67

1.46

2.4

2.08

1.84

2.23

1.95

1.97

1.84

1.6

1.41

2.34

2.0

2.13

2.0

2.72

3.51

4.08

4.24

2.52

3.27

3.84

2.88

2.09

2.59

3.34

3.91

2.4

3.13

3.69

2.23

2.93

1.97

2.46

3.2

3.76

2.34

3.0

2.13

2.0

1.59

1.36

1.19

1.14

1.47

1.27

1.12

1.12

1.62

1.5

1.3

1.14

1.4

1.21

1.07

1.3

1.14

1.97

1.84

1.6

1.41

1.56

1.5

1.6

2.0

OB319--1.qxp 03.12.3 0:55 PM

18



Total


(kW)Current

(A)

Powerfactor(%)


07

09

12

18

24

26

07+07

07+09

07+12

07+18

07+24

07+26

09+09

09+12

09+18

09+24

09+26

12+12

12+18

12+24

12+26

18+18

18+24

18+26

24+24

24+26

07+07+07

07+07+09

07+07+12

07+07+18

07+07+24

07+07+26

07+09+09

07+09+12

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

4.61

4.87

5.31

9.97

11.86

14.14

8.87

9.31

9.35

10.85

11.90

11.90

9.53

9.71

11.07

11.90

11.90

10.41

11.24

11.24

11.24

10.41

10.41

10.41

10.41

10.41

9.44

9.53

10.14

9.31

9.31

9.31

9.53

9.97

3.3(1.2-4.2)

3.6(1.2-4.5)

4.0(1.2-4.8)

7.2(1.4-8.2)

7.9(1.4-8.6)

8.6(1.6-9.2)

6.6(1.8-7.2)

6.9(1.8-8.7)

7.3(1.8-9.2)

8.9(1.8-9.9)

9.4(1.8-9.9)

9.4(1.8-9.9)

7.2(1.8-9.1)

7.6(1.8-9.5)

9.0(1.8-10.1)

9.4(1.8-10.1)

9.4(1.8-10.1)

8.0(1.8-9.8)

9.4(1.8-10.5)

9.4(1.8-10.5)

9.4(1.8-10.5)

9.4(1.9-11.2)

9.4(1.9-11.2)

9.4(1.9-11.2)

9.4(1.9-11.2)

9.4(1.9-11.2)

8.7(2.6-10.6)

8.8(2.6-11.1)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

8.9(2.6-11.6)

9.4(2.6-11.6)

1.050(0.340-1.380)

1.110(0.340-1.510)

1.210(0.330-1.570)

2.270(0.330-2.710)

2.700(0.330-3.060)

3.220(0.360-3.520)

2.020(0.480-2.760)

2.120(0.480-3.000)

2.130(0.480-3.110)

2.470(0.460-3.140)

2.710(0.460-3.140)

2.710(0.460-3.140)

2.170(0.480-3.140)

2.210(0.480-3.230)

2.520(0.460-3.260)

2.710(0.460-3.260)

2.710(0.460-3.260)

2.370(0.480-3.230)

2.560(0.460-3.420)

2.560(0.460-3.420)

2.560(0.460-3.420)

2.370(0.440-3.320)

2.370(0.440-3.320)

2.370(0.440-3.320)

2.370(0.440-3.320)

2.370(0.440-3.320)

2.150(0.530-3.060)

2.170(0.530-3.330)

2.310(0.530-3.400)

2.120(0.510-3.330)

2.120(0.510-3.330)

2.120(0.510-3.330)

2.170(0.530-3.420)

2.270(0.530-3.410)

–

–

–

–

–

–

3.3

3.88

4.61

6.41

7.28

7.41

3.6

4.34

6.0

6.84

6.98

4.0

5.64

6.27

6.43

4.7

5.37

5.55

4.7

4.89

2.9

2.67

2.53

2.05

1.73

1.64

3.2

3.02

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

2.9

3.44

4.33

5.28

5.93

6.11

3.2

4.02

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

3.3

3.6

4.0

7.2

7.9

8.6

3.3

3.02

2.69

2.49

2.12

1.99

3.6

3.26

3.0

2.56

2.42

4.0

3.76

3.13

2.97

4.7

4.03

3.85

4.7

4.51

2.9

2.67

2.53

2.05

1.73

1.64

2.49

2.35

OB319--1.qxp 03.12.3 0:55 PM

19



Total


(kW)Current

(A)

Powerfactor(%)


07+09+18

07+09+24

07+09+26

07+12+12

07+12+18

07+12+24

07+12+26

07+18+18

07+18+24

07+18+26

09+09+09

09+09+12

09+09+18

09+09+24

09+09+26

09+12+12

09+12+18

09+12+24

09+12+26

09+18+18

09+18+24

12+12+12

12+12+18

12+12+24

12+12+26

12+18+18

12+18+24

07+07+07+07

07+07+07+09

07+07+07+12

07+07+07+18

07+07+07+24

07+07+07+26

07+07+09+09

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

9.22

9.22

9.22

9.71

9.00

9.00

9.00

8.61

8.61

8.61

9.53

9.88

9.18

9.18

9.18

9.62

8.92

8.92

8.92

8.52

8.52

9.53

8.83

8.83

8.83

8.43

8.43

8.87

8.74

8.61

8.39

8.39

8.39

8.70

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.0(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.6-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.6-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(2.7-11.6)

9.4(3.4-11.6)

9.4(3.4-11.6)

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

2.100(0.510-3.330)

2.100(0.510-3.330)

2.100(0.510-3.330)

2.210(0.530-3.400)

2.050(0.510-3.230)

2.050(0.510-3.230)

2.050(0.510-3.230)

1.960(0.490-3.100)

1.960(0.490-3.100)

1.960(0.490-3.100)

2.170(0.530-3.420)

2.250(0.530-3.410)

2.090(0.510-3.320)

2.090(0.510-3.320)

2.090(0.510-3.320)

2.190(0.530-3.400)

2.030(0.510-3.230)

2.030(0.510-3.230)

2.030(0.510-3.230)

1.940(0.490-3.100)

1.940(0.490-3.100)

2.170(0.530-3.380)

2.010(0.510-3.160)

2.010(0.510-3.160)

2.010(0.510-3.160)

1.920(0.490-3.030)

1.920(0.490-3.030)

2.020(0.590-3.420)

1.990(0.590-3.410)

1.960(0.590-3.390)

1.910(0.580-3.260)

1.910(0.580-3.260)

1.910(0.580-3.260)

1.980(0.590-3.400)

2.48

2.11

2.01

3.63

3.04

2.62

2.5

3.93

3.45

3.31

3.0

2.82

2.35

2.01

1.92

3.41

2.89

2.5

2.4

3.76

3.31

3.13

2.68

2.35

2.25

3.52

3.13

2.35

2.19

1.99

1.68

1.46

1.4

2.05

4.97

5.64

5.81

3.63

4.57

5.24

5.43

3.93

4.6

4.79

3.0

3.76

4.7

5.37

5.55

3.41

4.33

5.01

5.2

3.76

4.42

3.13

4.02

4.7

4.88

3.52

4.17

2.35

2.19

1.99

1.68

1.46

1.4

2.64

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

2.35

2.82

3.41

4.33

5.01

5.2

2.64

1.93

1.64

1.56

2.12

1.77

1.53

1.46

1.53

1.34

1.29

3.0

2.82

2.35

2.01

1.92

2.56

2.16

1.88

1.8

1.88

1.65

3.13

2.68

2.35

2.25

2.35

2.08

2.35

2.19

1.99

1.68

1.46

1.4

2.05

OB319--1.qxp 03.12.3 0:55 PM

20



Total


(kW)Current

(A)

Powerfactor(%)


07+07+09+12

07+07+09+18

07+07+09+24

07+07+09+26

07+07+12+12

07+07+12+18

07+07+12+24

07+07+18+18

07+09+09+09

07+09+09+12

07+09+09+18

07+09+09+24

07+09+12+12

07+09+12+18

07+09+12+24

07+12+12+12

07+12+12+18

09+09+09+09

09+09+09+12

09+09+09+18

09+09+09+24

09+09+12+12

09+09+12+18

09+12+12+12

12+12+12+12

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

99

8.52

8.30

8.30

8.30

8.39

7.99

7.99

7.69

8.61

8.43

8.21

8.21

8.30

7.91

7.91

8.17

7.82

8.56

8.39

8.17

8.17

8.21

7.82

8.08

8.48

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

9.4(3.4-11.6)

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

9.4(3.5-11.6)

9.4(3.4-11.6)

9.4(3.4-11.6)

1.940(0.590-3.390)

1.890(0.580-3.270)

1.890(0.580-3.270)

1.890(0.580-3.270)

1.910(0.590-3.340)

1.820(0.580-3.220)

1.820(0.580-3.220)

1.750(0.550-3.130)

1.960(0.590-3.390)

1.920(0.590-3.370)

1.870(0.580-3.230)

1.870(0.580-3.230)

1.890(0.590-3.320)

1.800(0.580-3.200)

1.800(0.580-3.200)

1.860(0.590-3.280)

1.780(0.580-3.210)

1.950(0.590-3.390)

1.910(0.590-3.350)

1.860(0.580-3.210)

1.860(0.580-3.210)

1.870(0.590-3.300)

1.780(0.580-3.190)

1.840(0.590-3.260)

1.930(0.590-3.230)

1.88

1.6

1.4

1.34

1.73

1.49

1.31

1.31

2.48

2.28

1.96

1.72

2.11

1.83

1.62

2.62

2.3

2.35

2.16

1.88

1.65

2.06

1.76

2.5

2.35

2.41

2.06

1.8

1.72

2.96

2.56

2.25

3.38

2.48

2.28

1.96

1.72

2.82

2.45

2.16

2.62

2.3

2.35

2.16

1.88

1.65

2.75

2.35

2.5

2.35

3.22

4.12

4.8

4.98

2.96

3.84

4.51

3.38

2.48

3.04

3.93

4.6

2.82

3.67

4.33

2.62

3.45

2.35

2.89

3.76

4.42

2.75

3.52

2.5

2.35

1.88

1.6

1.4

1.34

1.73

1.49

1.31

1.31

1.93

1.77

1.53

1.34

1.64

1.43

1.26

1.53

1.34

2.35

2.16

1.88

1.65

1.83

1.76

1.88

2.35

OB319--1.qxp 03.12.3 0:55 PM

21

SPECIFICATION5

Outdoor model

Indoor units numberIndoor units total capacity (Connectable) 2 indoor units total capacity (Simultaneous operation) 2 Piping total lengthConnecting pipe lengthHeight difference (Indoor ~ Outdoor)Height difference (Indoor ~ Indoor)FunctionCapacity [Rated (Min~Max.) Hz]4DehumidificationOutdoor air flowPower outletRunning current 4Power inputAuxiliary heaterCrankcase heaterPower factor 4Starting current 4Compressor motor currentFan motor current

ModelOutputWindingresistance (at 20:)ModelWindingresistance (at 20:)Dimensions WOHODWeightSound level (High/Low ) 3Fan speed (High/Low ) 3Fan speed regulator 3Refrigerant filling capacity (R410A)Refrigerating oil (Model)Thermistor RT61Thermistor RT62Thermistor RT63Thermistor RT6A,6BThermistor RT65Thermistor RT68

mmmm

kWR/hK /h

AAW

A(kW)W%AAA

W

"

"

mmkgdBrpm

kg

cck"k"k"k"k"k"

Com

pres

sor

Ele

ctric

alda

taF

an

mot

orS

peci

alre

mar

ksC

apac

ityS

yste

m

Coefficient of performance (C.O.P)

Outdoor unit power supply

MXZ-A18WV - E1 Single phase230V,50Hz

2Total capacity 24 Total capacity 24

Max. 30 (chargeless 20)Max. 20

1010

2,46020

——

90.08.98

0.57

SNV-092FJYH (ROTARY)1,450

U-V 2.56V-W 2.56 W-U 2.56

RA6V49-AAWHT-BLK 139.9 BLK-YLW 34.2

BLK-RED 205.3840(+69)o640o330

52

725/6202

1.75

450 (NEO22)13.4 (at 100:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)17.0 (at 50:)10.0 (at 25:)

Cooling5.4 (1.55~6.0)

—

8.981,860 (370~2,130)

8.41

2.90

49/44

Heating6.6 (1.58~7.2)

—

8.551,770 (290~1,850)

7.98

3.73

50/45w

w

w w

w

TEST CONDITIONS COOLING INDOOR DB27.0°C WB19.0°COUTDOOR DB35.0°C WB24.0°C

HEATING INDOOR DB20.0°C OUTDOOR DB 7.0°C WB 6.0°C

NOTE: Test conditions are based on ISO 5151 (Refrigerant piping length (one way) :5mw Reference value1 Electrical data is for only outdoor unit.2 However, please refer to “INDOOR/OUTDOOR CORRESPONDENCE TABLE” of page 7 for the combination.3 These specifications are when all indoor units are operating.4 Measured under rated operating frequency.

OB319--1.qxp 03.12.3 0:55 PM

22

Outdoor model

Indoor units numberIndoor units total capacity (Connectable)2 Indoor units total capacity (Simultaneous operation) 2 Piping total lengthConnecting pipe lengthHeight difference (Indoor ~ Outdoor)Height difference (Indoor ~ Indoor)FunctionCapacity [Rated (Min~Max.) Hz]4DehumidificationOutdoor air flowPower outletRunning current 4Power inputAuxiliary heaterCrankcase heaterPower factor 4Starting current 4Compressor motor currentFan motor current

ModelOutputWindingresistance(at20:)ModelWindingresistance(at20:)Dimensions WOHODWeightSound level (High/Low ) 3Fan speed (High/Low ) 3Fan speed regulator 3Refrigerant fillingcapacity(R410A)Refrigerating oil (Model)Thermistor RT61Thermistor RT62Thermistor RT63Thermistor RT68Thermistor RT6AThermistor RT6BThermistor RT6CThermistor RT6DThermistor RT65

mmmm

kWR/hK /h

AAW

A(kW)W%AAA

W

"

"

mmkgdBrpm

kg

cck"k"k"k"k"k"k"k"k"

Com

pres

sor

Ele

ctric

alda

taF

an

mot

orS

peci

alre

mar

ksC

apac

ityS

yste

m

Coefficient of performance(C.O.P)

Outdoor unit power supply

MXZ-A26WV - E1

Single phase230V,50Hz

2 to 3Total capacity 54 Total capacity 54

Max. 50Max. 25

1010

25

——

99.09.44

0.2

TNB220FMCH (ROTARY)2,000

U-V 1.41V-W 1.41 W-U 1.41

PM8H60-UA BLK-WHT 15.2

WHT-RED 15.2 RED-BLK 15.2900o900o320 (+35)

69

2

3.5

870 (NEO22)13.4 (at 100:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)17.0 (at 50:)

Cooling7.2 (2.9~8.5)

—2,530

9.182,090 (720~2,560)

8.98

3.44

46/44550/490

Heating9.0 (2.6~11.0)

—2,630

9.442,150 (530~3,050)

9.24

4.19

48/46560/490

w w w w w

w w w w w

MXZ-A32WV - E1

Single phase230V,50Hz

2 to 4Total capacity 54Total capacity 54

Max. 70Max. 25

1010

25

——

99.09.62

0.2

TNB220FMCH (ROTARY)2,100

U-V 1.41V-W 1.41 W-U 1.41

PM8H60-UA BLK-WHT 15.2

WHT-RED 15.2 RED-BLK 15.2900o900o320 (+35)

70

2

3.5

870 (NEO22)13.4 (at 100:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)10.0 (at 25:)17.0 (at 50:)

Cooling8.0 (3.7~9.2)

—2,530

9.622,190 (810~2,580)

9.42

3.65

46/44550/490

Heating9.4 (3.4~11.6)

—2,630

8.481,930 (590~3,230)

8.28

4.87

48/46560/490

TEST CONDITIONS COOLING INDOOR DB27.0°C WB19.0°COUTDOOR DB35.0°C WB24.0°C

HEATING INDOOR DB20.0°C OUTDOOR DB 7.0°C WB 6.0°C

NOTE: Test conditions are based on ISO5151 (Refrigerant piping length (one way): 5m)w Reference value1 Electrical data is for only outdoor unit.2 However, please refer to “INDOOR/OUTDOOR CORRESPONDENCE TABLE” of page 8 or 9 for the combination.3 These specifications are when all indoor units are operating.4 Measured under rated operating frequency.

OB319--1.qxp 03.12.3 0:55 PM

23

NOISE CRITERIA CURVES6

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, 0

dB

= 0

.000

2 M

ICR

O B

AR

BAND CENTER FREQUENCIES, Hz

Test conditions.Cooling :DB 35: WB 24:Heating :DB 7: WB 6:

CoolingHigh

FUNCTIONFAN SPEED

HeatingHigh

49

SPL(dB(A))

50

LINEMXZ-A18WV - E1

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, 0

dB

= 0

.000

2 M

ICR

O B

AR

BAND CENTER FREQUENCIES, Hz

Test conditions.Cooling :DB 35: WB 24:Heating :DB 7: WB 6:

CoolingHigh

FUNCTIONFAN SPEED

HeatingHigh

46

SPL(dB(A))

48

LINEMXZ-A26WV - E1

MXZ-A32WV - E1

OB319--1.qxp 03.12.3 0:55 PM

OUTLINES AND DIMENSIONS

24

7

Unit: mm

MXZ-A18WV - E1

OUTDOOR UNIT

Gas refrigerant valve(flared [9.52)

Liquid refrigerant valve(flared [6.35)

65

50

58734

69

195

9065

6565

840

40

330

360

500

273

320

640

121Service panel

B UNIT

Air in

A UNIT

Drainage

3 holes([33)

Air in

Air out

REQUIRED SPACE Open as a ruleMore than100mm if the front and bothsides are open

*More than 100mm 200mm or more if there are obstaclesto both sides

Open as a ruleMore than 200mm if the back,both sides and top are open

More than 350mm

More than 100mm

* Note:The dimensions given along the arrrows above are required to guaranteethe air conditioner's performance. Install the unit in as wide a place aspossible for later service or repairs.

OB319--1.qxp 03.12.3 0:55 PM

25

MXZ-A26WV - E1

Unit: mmOUTDOOR UNIT

Less

than

25

Base

Rubber cushion

Veranda

(Bas

e bo

lt le

ngth

)

500

100

Mor

e th

an More than

100 350

200

More than More than

Mor

e th

an50

0M

ore

than

1.Installation space

Note : Leave front and both sides clearance fully.

Note : Leave front and overhead clearance fully.

Note : Leave front, overhead and both sides clearance fully.

2.Service space

100

500

350500

100

service space

More thanMore than

More than

Mor

e th

an

Mor

e th

an

(200)

(27)

(16)

(16)

355

387

40

200 500

250 27035

3574

Air in

Drainage holes 3-[33

Air out

Air in

(Base bolt M10)2-U-shape notched holes

(Base bolt M10)

2-12O36 Oval hole

250

380.

8

50

531.

3

900

900

460

317 23

Indoor andoutdoorconnect wiring23O45 hole

30

33

320

23

10

88

[6.35(flared)1/4Liquid pipe

C unit connectionB unit connectionA unit connection

Gas pipe

[12.7(flared)1/2(A unit)[9.52(flared)3/8(B,C unit)

OB319--1.qxp 03.12.3 0:55 PM

26

MXZ-A32WV - E1

Unit: mmOUTDOOR UNIT

100

500

350500

100

500

100

100 350

200

500

service space

More thanMore than

More than

Mor

e th

an

Mor

e th

an

Mor

e th

an

More than More than

Mor

e th

an

Mor

e th

an More than

Less

than

25

Base

Rubber cushion

Veranda

(Bas

e bo

lt le

ngth

)

(200)

(16)

(27)

355

(16)

387

40

200 500

250 27035

3574

Air in

Drainage holes 3-[33

Air out

Air in

(Base bolt M10)

2-U-shape notched holes

(Base bolt M10)2-12O36 Oval hole

531.

3

900

480.

8350

900

460

317

50

23

Indoor andoutdoorconnect wiring23O45 hole

30

33

32023

10

88

Gas pipe

[12.7(flared)1/2(A,B unit)[9.52(flared)3/8(C,D unit)

[6.35(flared)1/4Liquid pipe

D unit connectionC unit connectionB unit connectionA unit connection

1.Installation space

Note : Leave front and both sides clearance fully.

Note : Leave front and overhead clearance fully.

Note : Leave front, overhead and both sides clearance fully.

2.Service space

OB319--1.qxp 03.12.3 0:55 PM

27

WIRING DIAGRAM8

MODEL WIRING DIAGRAMOUTDOOR UNIT

F912

NF NOISE FILTER

NR63C

N91

2

YLW

BLK

45

RESISTORR64A

F912 FUSE(3.15A)

LEV(A) EXPANSION VALVE A,COIL

R64BR64A

TB2 TERMINAL BLOCKTB1 TERMINAL BLOCK

PE

SG79J614H02

OR

N

CN61

IPM

CN601CN602

ELECTRONICCONTROLP.C.BOARD

NOISEFILTERP.C.BOARD

LDE

TB1

TB2

CIRCUITBREAKER

N

L

N

3

N

3

GRN

BLK

BLU

RE

D

BLU

GR

N/Y

LW

BLU

BLK

ORN

BLU

BR

NB

RN

WH

T

RE

DBLK

BLK

BLK

RE

DW

HT

RED

WHT

BLK

:Terminal block :Connector3.Symbols below indicate.2.Use copper conductors only(for field wiring). diagram for servicing. refer to the indoor unit electric wiring1.About the indoor side electric wiringNOTES

FAN MOTOR RELAY

TRANSFORMER

RT63RT65 FIN TEMPERATURE THERMISTOR

EVAPORATOR TEMPERATURE THERMISTOR

RT61RT62 DEFROST THERMISTOR

DISCHARGE TEMPERATURE THERMISTOR

SYMBOL

RT68

SSR61

T801X61X62X64

MCMF

21S4 R.V. COIL

OUTDOOR FAN MOTORCOMPRESSOR

RELAY

FAN MOTOR RELAY

SOLENOID COIL RELAY

NAME

HIGH-PRESSURE PROTECT THERMISTOR

SYMBOL

L

L63LEV(B)

NR63

R62

R64B

RT6ART6B GAS PIPE TEMPERATURE B THERMISTOR

GAS PIPE TEMPERATURE A THERMISTOR

RESISTOR

RESISTOR

VARISTOR

EXPANSION VALVE B,COILNORMAL MODE CHOKE COIL

NAME

REACTOR

CURRENT TRANSFORMER

SMOOTHING CAPACITORSMOOTHING CAPACITOR

IPM POWER TRANSISTOR MODULE

F911 FUSE(1A)F801 FUSE(1A)F61 FUSE(20A)DS62 DIODE MODULEDS61 DIODE MODULE

CT761CT61 CURRENT TRANSFORMER

C65 OUTDOOR FAN CAPACITORC63C62C61 SMOOTHING CAPACITOR

ACTIVE FILTER MODULEAFMNAMESYMBOL

RT65 RT6A RT6B RT62 RT61 RT63 RT68

WV

U

P

N

AFM

X62 X61

T801

C63

C62

C61

DS62

DS61

TAB67TAB65

TA

B66

F80

1

L

L63

TAB64

TAB62

TAB61 TAB63

CN

771

CN

772

CN662CN661CN663CN

911

TAB4

3

TAB2

TAB1F61

CT761

C65

R62

X64

CT61

F91

1

NF

SS

R61 CN

851

CN

901

W

V

U

6

67

3 1 3 1

1 2 3 5 6 7 81 2 3 43 41 21 2

2113

MC

LEV(B)

LEV(A)

21S4MF

POWERSUPPLY~/N230V50Hz

TO INDOORUNIT No.BCONNECTING12V

TO INDOORUNIT No.ACONNECTING12V

MXZ-A18WV - E1

OB319--1.qxp 03.12.3 0:55 PM

28

MXZ-A26WV - E14

(WH

T)

(RE

D)

(BLU

)

(3.1

5A)

F80

1

(250

V)

(250

V)

(250

V)

WHT

RED

LD9

GR

N

CN

781

12

34

5C

N70

254

32

17

6C

N70

11

21

23

CN

801

PO

WE

R S

UP

PLY

~/N

230

V~

50H

z

2 341

SR

WH

T

BLK

RE

D

YLW

L

R64

F91

2(3

.15A

)

X64

TA

B4

BLKBLKBLK

BLK

12

34

5

CT

1

CT

2

(1A

)

N/F

CN9031 2

CN

901

CN

912

32

1

CN9021 2

N

F91

1S

SR

61

CT

61N

R63

PF

C

CB

1C

B2

CB

3

IPM

RS

1

RS

2

RS

3

RS

4

R93

4A

R93

4B

T80

1

GRYGRY

BLKBLK

GR

YP

NK

OR

NB

LUY

LW

RE

DW

HT

BLK

BLK

BLK

BLK

BLKBLK

BLKBLKBLK

BLK

HC

932

RT65

BLK

BLK

2 1CN3U V W

BLKU

V

MC

W

RE

D

WH

T

LD1

LD2

CN

41

2

1 432CN2

5 6 7CN5

1 2

LDE

1LD

E2

GR

NG

RN

CN

932

CN

931

MF

1 2 3 1 2 3 4 5

BLK 21S

4BLK

14

32

56

CN

795

LEV

WHTYLWORNBLUBRNRED

E

CN

661

81

23

45

67

RT

62R

T63

GRYGRY

GRYGRY

RT

61R

T68

CN

662

87

16

54

32

GRYGRYGRYGRYGRYGRY

RT

6AR

T6B

RT

6C

21

CN

681

REDRED

HP

SC

REDBRNBLUORNYLWWHT

LEV

CN

793

65

23

41

WHTYLWORNBLUBRNRED

BLE

V

65

23

41

CN

792

65

23

41

CN

791

WHTYLWORNBLUBRNRED

ALE

V

1CN602

3 2123CN601

1 23CN603

YLW

3

BLU

RE

D

BLU

OR

N

TB

33

TB

2

3T

B4

BLU

N N N

UN

IT(A

)IN

DO

OR

UN

IT(B

)IN

DO

OR

UN

IT(C

)IN

DO

OR

TA

B2

TA

B1

BR

EA

KE

RC

IRC

UIT

GR

N/Y

LW

BLU

BLK

NL

TB

1 PE

TO INDOOR UNITCONNECTING 12V

PO

WE

R B

OA

RD

P. C

. BO

AR

DF

ILT

ER

NO

ISE

ELE

CT

RO

NIC

CO

NT

RO

L P

. C. B

OA

RD

SG

79Y

271H

01

:Ter

min

al b

lock

:C

onne

ctor

3.S

ymbo

ls b

elow

indi

cate

.2.

Use

cop

per

cond

ucto

rs o

nly

(for

fiel

d w

iring

). d

iagr

am fo

r se

rvic

ing.

ref

er to

the

indo

or u

nit e

lect

ric w

iring

1.A

bout

the

indo

or s

ide

elec

tric

wiri

ngN

OT

ES

:SY

MBO

LN

AM

ESY

MBO

LN

AM

E

CU

RR

EN

T T

RA

NS

FO

RM

ER

FU

SE

(3.

15A

) (2

50V

)F

US

E (

1A)

(250

V)

LEV

A~C

EX

PA

NS

ION

VA

LVE

LR

EA

CT

OR

IPM

PO

WE

R T

RA

NS

IST

OR

MO

DU

LEH

PS

HIG

H P

RE

SS

UR

E S

WIT

CH

CT

61C

T1,

2C

UR

RE

NT

TR

AN

SF

OR

ME

R

HC

932

FE

T A

RR

AY

F91

2F

911

F80

1F

US

E (

3.15

A)

(250

V)

SM

OO

TH

ING

CA

PA

CIT

OR

CB

1~3

OU

TDO

OR

FA

N M

OTO

R (I

NN

ER

FU

SE

)

PO

WE

R F

AC

TO

R C

ON

TR

OLL

ER

NO

ISE

FIL

TE

R

RT

61DI

SCHA

RGE

TEM

PERA

TURE

THE

RMIS

TOR

RT6

A~C

GAS

PIP

E TE

MPE

RAT

UR

E TH

ERM

ISTO

RR

S1~

4R

ES

IST

OR

R93

4A, B

RE

SIS

TO

R

MF

MC

CO

MP

RE

SS

OR

R64

RE

SIS

TO

RP

FC

N/F

NR

63V

AR

IST

OR

EX

PA

NS

ION

VA

LVE

LEV

E

FIN

TE

MP

ER

AT

UR

E T

HE

RM

IST

OR

SO

LEN

OID

CO

IL R

ELA

Y

21S

4R

.V. C

OIL

X64

RE

LAY

TB

1~4

TE

RM

INA

L B

LOC

K

RT

65R

T63

EVAP

ORAT

ION

TEM

PERA

TURE

THE

RMIS

TOR

T80

1T

RA

NS

FO

RM

ER

SS

R61

RT

68O

UT

DO

OR

HE

AT

EX

CH

AN

GE

R

TE

MP

ER

AT

UR

E T

HE

RM

IST

OR

DE

FR

OS

T T

HE

RM

IST

OR

RT

62N

AM

ESY

MBO

L


OB319--1.qxp 03.12.3 0:55 PM

29

MXZ-A32WV - E1

(GR

N)

(BLU

)(R

ED

)(W

HT

)

4

WHT

RED

(250

V)

(250

V)

(250

V)

LD9

GR

N

PE

TB

1

L N

BLK

BLUG

RN

/YLW

CIR

CU

ITB

RE

AK

ER

TA

B1

TA

B2

UN

IT(D

)IN

DO

OR

IND

OO

RU

NIT

(C)

IND

OO

RU

NIT

(B)

IND

OO

RU

NIT

(A)

NNN NB

LUT

B5

3

BR

N

BLU

TB

43

TB

2

3T

B3

OR

N

BLU

RE

D

BLU

TO INDOOR UNITCONNECTING 12V

3

YLW

CN6043 2 1

CN6033 21

CN6013 2 1 23

CN6021

LEV

A

REDBRNBLUORNYLWWHT

CN

791

14

32

56

CN

792

14

32

56

LEV

B

REDBRNBLUORNYLWWHT

14

32

56

CN

793

LEV

WHTYLWORNBLUBRNRED

C

14

32

56

CN

794

LEV

WHTYLWORNBLUBRNRED

DH

PSRED

RED

CN

681

12

RT

6DR

T6C

RT

6BR

T6A

GRYGRYGRYGRYGRYGRY

GRYGRY

23

45

61

78

CN

662

RT

68R

T61

GRYGRY

GRYGRY

RT

63R

T62

76

54

32

18

CN

661

E

REDBRNBLUORNYLWWHT

LEV

CN

795

65

23

41

BLK21

S4

BLK

54321321

MF

CN

931

CN

932

GR

NG

RN

LDE

2LD

E1

21CN5

765CN2

2 3 41

21CN

4LD

2LD

1

WH

T

RE

D

W

MCV

U

BLK

WVU CN312

BLK

BLK

RT65

HC

932

BLK

BLKBLKBLK

BLKBLK

BLK

BLK

BLK

BLK

WH

TR

ED

YLW

BLU

OR

NP

NK

GR

Y

BLKBLK

GRYGRY

T80

1

R93

4B

R93

4A

RS

4

RS

3

RS

2

RS

1

IPM

CB

3C

B2

CB

1

PF

C

NR

63C

T61

SS

R61

F91

1

N

21CN902

12

3C

N91

2

CN

901

21CN903

N/F

(1A

)

CT

2

CT

1

54

32

1

BLK

BLKBLKBLK

TA

B4

X64

(3.1

5A)

F91

2

R64

L

YLW

RE

DB

LK

WH

T

R S

1 432

PO

WE

R S

UP

PLY

~/N

230

V~

50H

z

CN

801

32

12

1C

N70

16

71

23

45

CN

702

54

32

1C

N78

1(3

.15A

)F

801

PO

WE

R B

OA

RD

P. C

. BO

AR

DF

ILT

ER

NO

ISE

ELE

CT

RO

NIC

CO

NT

RO

L P

. C. B

OA

RD

SG

79Y

270H

01

:Ter

min

al b

lock

:C

onne

ctor

3.S

ymbo

ls b

elow

indi

cate

.2.

Use

cop

per

cond

ucto

rs o

nly

(for

fiel

d w

iring

). d

iagr

am fo

r se

rvic

ing.

ref

er to

the

indo

or u

nit e

lect

ric w

iring

1.A

bout

the

indo

or s

ide

elec

tric

wiri

ngN

OT

ES

:SY

MBO

LN

AM

ESY

MBO

LN

AM

E

CU

RR

EN

T T

RA

NS

FO

RM

ER

FU

SE

(3.

15A

) (2

50V

)F

US

E (

1A)

(250

V)

LEV

A~D

EX

PA

NS

ION

VA

LVE

LR

EA

CT

OR

IPM

PO

WE

R T

RA

NS

IST

OR

MO

DU

LEH

PS

HIG

H P

RE

SS

UR

E S

WIT

CH

CT

61C

T1,

2C

UR

RE

NT

TR

AN

SF

OR

ME

R

HC

932

FE

T A

RR

AY

F91

2F

911

F80

1F

US

E (

3.15

A)

(250

V)

SM

OO

TH

ING

CA

PA

CIT

OR

CB

1~3

OU

TDO

OR

FA

N M

OTO

R (I

NN

ER

FU

SE

)

PO

WE

R F

AC

TO

R C

ON

TR

OLL

ER

NO

ISE

FIL

TE

R

RT

61DI

SCHA

RGE

TEM

PERA

TURE

THE

RMIS

TOR

RT6

A~D

GAS

PIP

E TE

MPE

RAT

UR

E TH

ERM

ISTO

RR

S1~

4R

ES

IST

OR

R93

4A, B

RE

SIS

TO

R

MF

MC

CO

MP

RE

SS

OR

R64

RE

SIS

TO

RP

FC

N/F

NR

63V

AR

IST

OR

EX

PA

NS

ION

VA

LVE

LEV

E

FIN

TE

MP

ER

AT

UR

E T

HE

RM

IST

OR

SO

LEN

OID

CO

IL R

ELA

Y

21S

4R

.V. C

OIL

X64

RE

LAY

TB

1~5

TE

RM

INA

L B

LOC

K

RT

65R

T63

EVAP

ORAT

ION

TEM

PERA

TURE

THE

RMIS

TOR

T80

1T

RA

NS

FO

RM

ER

SS

R61

RT

68O

UT

DO

OR

HE

AT

EX

CH

AN

GE

R

TE

MP

ER

AT

UR

E T

HE

RM

IST

OR

DE

FR

OS

T T

HE

RM

IST

OR

RT

62N

AM

ESY

MBO

L


OB319--1.qxp 03.12.3 0:55 PM

REFRIGERANT SYSTEM DIAGRAM

30

9

Unit:mmMXZ-A18WV - E1

High-pressureprotect thermistorRT68

CompressorDischargetemperaturethermistorRT61

R.V. coilheating ONcooling OFF

Refrigerant flow in coolingRefrigerant flow in heating

Muffler

Outdoorheat

exchanger

Muffler

LEV (A)

EvaporationtemperaturethermistorRT63

LEV (B)

Strainer#100

Strainer

Strainer#100

DefrostthermistorRT62

Capillary tube3.01.8600




Stop valve(with service port)

Gas pipe temperatureB thermistor

Gas pipe temperatureA thermistor

Stop valve

Stop valve

IndoorUnit B

IndoorUnit B

IndoorUnit A

IndoorUnit A

Stop valve(with service port)

4-way valve

8

6

6

12

12

Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the tables below.

When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe. For further information on Different-diameter pipe, see page BACK COVER.

Indoor unitExtension pipe diameter

class Pipe diameter

Liquid 6.35(1/4) Liquid 6.35(1/4)07/09

Gas 9.52(3/8) Gas 9.52(3/8)

Liquid 6.35(1/4) Liquid 6.35(1/4)12

Gas 12.7(1/2) Gas 12.7(1/2)

Outdoor unit union diameter

For

Liquid 6.35(1/4)Indoor unit A

Gas 9.52(3/8)

Liquid 6.35(1/4)Indoor unit B

Gas 9.52(3/8)

Unit : mm (inch)

Piping length each indoor unit (a, b) 20m

Total piping length (a+b) 30m

Height difference between units (H) 10m

Bending point for each unit 15

Total bending point 30

It does not matter which unit is higher.

Refrigerant piping length (one way, 2 unit total)

Calculation : Xg=20g/mx(Refrigerant piping length(m)-20)

Indoorunits a

Outdoorunit

b

H

H

HOutdoor unit precharged 30m

200

20m

0

25m

1001,750

MAX REFRIGERANT PIPING LENGTH

OB319--1.qxp 03.12.3 0:55 PM

31

Ball valve withservice port


Distributor

Strainer#100

Receiver

LEV A

LEV B

LEV C

Oil separator

Compressor

High-pressureswitch

Service port

Defrost thermistorRT62

Distributor

Muffler

4-way valve

LEV E

Outdoorheatexchanger

Indoor unitC

Unit C gas pipe temperature thermistor [9.52

[6.35

[6.35

[6.35

Indoor unitB

Unit B gas pipe temperature thermistor [9.52

Indoor unitA

Indoor unitA

Indoor unitB

Indoor unitC

Unit A gas pipe temperature thermistor [12.7

[16

[16

[16

[16

[16


Capillary tube[2.0[0.6750

Capillary tube [4.0[2.4400


[9.52

[6Capillary tube[4.0[2.8 90

Capillary tube[4.0[2.8 90

Capillary tube[4.0[2.8 90

Dischargetemperaturethermistor RT61

Strainer#100

Strainer#100

Strainer#100



Outdoor heat exchangertemperature thermistor RT68

Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes,refer to the tables below.

When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe. For further information on Different-diameter pipe,see page BACK COVER.


class Pipe diameter

Liquid 6.35(1/4) Liquid 6.35(1/4)07/09

Gas 9.52(3/8) Gas 9.52(3/8)

Liquid 6.35(1/4) Liquid 6.35(1/4)12

Gas Gas 12.7(1/2)

Liquid 6.35(1/4) Liquid 6.35(1/4)18

Gas 12.7(1/2) Gas 12.7(1/2)

Liquid 6.35(1/4) Liquid 6.35(1/4)24

Gas 15.88(5/8) Gas 15.88(5/8)

Liquid 9.52(3/8) Liquid 9.52(3/8)26

Gas 15.88(5/8) Gas 15.88(5/8)


For


Gas 12.7(1/2)


Gas 9.52(3/8)

Liquid 6.35(1/4)Indoor unit C

Gas 9.52(3/8)

Unit : mm (inch)

Piping length each indoor unit (a, b, c) 25m

Total piping length (a+b+c) 50m





a

b

c

Outdoorunit

Indoorunits

H

H

H



Outdoor unit precharged 50m

200

40m

0

45m

1003,500

Unit:mmMXZ-A26WV - E1

9.52(3/8) or 12.7(1/2)


OB319--2.qxp 03.12.3 0:56 PM

32

Unit:mm

Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes,refer to the tables below.

When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe. For further information on Different-diameter pipe,see page BACK COVER.


For


Gas 12.7(1/2)


Gas 12.7(1/2)

Liquid 6.35(1/4)Indoor unit C

Gas 9.52(3/8)

Liquid 6.35(1/4)Indoor unit D

Gas 9.52(3/8)

Unit : mm (inch)

Piping length each indoor unit (a, b, c, d) 25m

Total piping length (a+b+c+d) 70m





a

b

c

d

Outdoorunit

Indoorunits

H

H

H



Outdoor unit precharged 60m

400

40m

0

50m

2003,500

70m

600

MXZ-A32WV - E1


class Pipe diameter

Liquid 6.35(1/4) Liquid 6.35(1/4)07/09

Gas 9.52(3/8) Gas 9.52(3/8)

Liquid 6.35(1/4) Liquid 6.35(1/4)12

Gas Gas 12.7(1/2)

Liquid 6.35(1/4) Liquid 6.35(1/4)18

Gas 12.7(1/2) Gas 12.7(1/2)

Liquid 6.35(1/4) Liquid 6.35(1/4)24

Gas 15.88(5/8) Gas 15.88(5/8)

Liquid 9.52(3/8) Liquid 9.52(3/8)26

Gas 15.88(5/8) Gas 15.88(5/8)

9.52(3/8) or 12.7(1/2)

Indoor unitD



Distributor

Receiver

LEV A

LEV B

LEV C

LEV D

Oil separator

Compressor

High-pressureswitch

Service port

Distributor

Muffler

4-way valve

LEV E

Outdoorheatexchanger

Unit D gas pipe temperature thermistor [9.52

Indoor unitC

Unit C gas pipe temperature thermistor [9.52

[6.35

[6.35

[6.35

[6.35

Indoor unitB

Unit B gas pipe temperature thermistor [12.7

Indoor unitA

Indoor unitA

Indoor unitB

Indoor unitC

Indoor unitD

Unit A gas pipe temperature thermistor [12.7

[16

[16

[16

[16

[16



[9.52

[6Capillary tube[4.0[2.8 90


Strainer#100

Capillary tube[2.0[0.6750

Strainer#100

Strainer#100

Strainer#100

Strainer#100



Defrost thermistorRT62


Outdoor heat exchanger temperaturethermistorRT68


OB319--2.qxp 03.12.3 0:56 PM

33

PERFORMANCE CURVES10

The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions,since operating conditions vary according to the areas where these units are installed. The following information has been pro-vided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.(1) GUARANTEED VOLTAGE

198~264V(2) AIR FLOW

Air flow should be set at MAX.(3) MAIN READINGS

(1) Indoor intake air wet-bulb temperature : °CWB(2) Indoor outlet air wet-bulb temperature : °CWB(3) Outdoor intake air dry-bulb temperature : °CDB(4) Total input: W(5) Indoor intake air dry-bulb temperature : °CDB(6) Outdoor intake air wet-bulb temperature : °CWB(7) Total input : WIndoor air wet/dry-bulb temperature difference on the left side of the chart on page 34 shows the difference between theindoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.

How to measure the indoor air wet-bulb/dry-bulb temperature difference1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets

of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where airspeed is high.

2. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake.Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.4. Open windows and doors of room.5. Press the EMERGENCY OPERATION switch once(twice) to start the EMERGENCY COOL

(HEAT) MODE.6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.7. 10 minutes later, measure temperature again and check that the temperature does not change.

INDOOR UNIT OUTDOOR UNIT

Cooling

Heating

Wet-and dry-bulbthermometers

Wet-and dry-bulbthermometers


E1

E1

OB319--2.qxp 03.12.3 0:56 PM

34

07 c

lass

8.5

7.8

7.1

6.4

5.8

5.1

10.6

9.7

8.8

7.9

7.1

6.3

9.3

8.5

7.8

7.0

6.3

5.6

12 c

lass

09 c

lass

10-1. Capacity and the input curves MXZ-A18WV- E1

25.9

23.9

21.9

19.9

17.9

15.9

13.9

12.0

25.4

23.4

21.5

19.5

17.6

15.6

13.7

11.7

24.0

22.2

20.3

18.5

16.6

14.8

12.9

11.1

07 c

lass

09 c

lass

12 c

lass

MXZ-A26WV-MXZ-A32WV- E1

E1

07 c

lass

8.5

7.8

7.1

6.4

5.8

5.1

9.3

8.5

7.8

7.0

6.3

5.6

26 c

lass

24 c

lass

10.6

9.7

8.8

7.9

7.1

6.3

13.1

11.9

10.8

9.7

8.7

7.7

13.7

12.4

11.3

10.1

9.0

8.0

17.0

15.4

13.9

12.5

11.1

9.7

18 c

lass

12 c

lass

09 c

lass

25.4

23.4

21.5

19.5

17.6

15.6

13.7

11.7

24.0

22.2

20.3

18.5

16.6

14.8

12.9

11.1

07 c

lass

09 c

lass

24 c

lass

26 c

lass

25.9

23.9

21.9

19.9

17.9

15.9

13.9

12.0

31.4

29.0

26.6

24.1

21.7

19.3

16.9

14.5

31.9

29.4

27.0

24.5

22.1

19.6

17.2

14.7

35.1

32.4

29.7

27.0

24.3

21.6

18.9

16.2

12 c

lass

18 c

lass

OB319--2.qxp 03.12.3 0:56 PM

35

10-2. Capacity and input correction by inverter output frequency (OUTDOOR UNIT : MXZ-A18WV)

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5

0 50 100 150

0.5

1.0

1.5<COOL>Capacity

FrequencyHz

Frequency

<COOL>Total input

Hz Hz

<HEAT>Capacity

Frequency Frequency

<HEAT>Total input

Hz

<COOL>Capacity

FrequencyHz

Frequency

<COOL>Total input

Hz

<HEAT>Capacity

Frequency0 50 100 150

0.5

1.0

1.5

Frequency

<HEAT>Total input

Hz

<COOL>Capacity

FrequencyHz

Frequency

<COOL>Total input

Hz

<HEAT>Capacity

FrequencyHz

Hz

Frequency

<HEAT>Total input

Hz

1. 07-class unit in single operation



OB319--2.qxp 03.12.3 0:56 PM

36

(OUTDOOR UNIT:MXZ-A26WV, MXZ-A32WV)

0 50 100 150

0.5

1.0

1.5<COOL>Capacity

FrequencyHz 0 50 100 150

0.5

1.0

1.5<COOL>Total input


0.5

1.0

1.5<HEAT>Capacity

FrequencyHz

0 50 100 150

0.5

1.0

1.5<COOL>Capacity


0.5

1.0

1.5<HEAT>Capacity

FrequencyHz

0 50 100 150

0.5

1.0

1.5<COOL>Capacity


0.5

1.0

1.5<HEAT>Capacity

FrequencyHz

0 50 100 150

0.5

1.0

1.5<COOL>Capacity


0.5

1.0

1.5<HEAT>Capacity

FrequencyHz





0 50 100 150

0.5

1.0

1.5<COOL>Capacity


0.5

1.0



0.5

1.0

1.5<HEAT>Capacity


0.5

1.0

1.5<HEAT>Total input

FrequencyHz


0 50 100 150

0.5

1.0


FrequencyHz

0 50 100 150

0.5

1.0



0.5

1.0


FrequencyHz

0 50 100 150

0.5

1.0



0.5

1.0


FrequencyHz

0 50 100 150

0.5

1.0



0.5

1.0


FrequencyHz

OB319--2.qxp 03.12.3 0:56 PM

37

0 50 100 150

0.5

1.0

1.5<COOL>Capacity


0.5

1.0



0.5

1.0

1.5<HEAT>Capacity

FrequencyHz


0 50 100 150

0.5

1.0


FrequencyHz

OB319--2.qxp 03.12.3 0:56 PM

38

10-3. Outdoor low pressure and outdoor unit current 1. 07-class unit in single operation (OUTDOOR UNIT : MXZ-A18WV)

NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system).The conversion factor is : 1(MPa[Gauge]) =10.2(kgf/ ff[Gauge])

(1) COOL operation1Both indoor and outdoor units are under the same

temperature/humidity condition.

Dry-bulb temperature(°C) Relative humidity(%)

20 50

25 60

30 70

<How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located

on indoor unit.2.Press emergency operation button.3.Compressor starts running at rated frequency.4.Indoor fan runs at High speed and continues for 30 minutes.5.To cancel this operation, press emergency operation button

or any button on remote controller.

①

➁

Indoor Outdoor

Set air flow to High speed. Inverter output frequency is 45Hz.➂

(2) HEAT operationDB(°C) 20.0

WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

15 20 25 3050 60 70

350.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

15 20 25 3050 60 70

351

2

3

4

5

Ambient temperature(:)/ Ambient humidity(%)

(:)(%)

33Hz

(MPa[Gauge])

5 10 15 20 252

3

4

5

6

7

8

Ambient temperature(:)

45Hz

Out

door

low

pre

ssur

e


(:)(%)

33Hz

Out

door

uni

t cur

rent

(A

)O

utdo

or u

nit c

urre

nt (

A)

(kgf/F[Gauge])

15

10

11

12

13

14

9

8

7

6

5

2Air flow speed : High3Inverter output frequency : 33Hz

OB319--2.qxp 03.12.3 0:56 PM

39

2. 09-class unit in single operation (OUTDOOR UNIT : MXZ-A18WV)NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system).

The conversion factor is : 1(MPa[Gauge]) =10.2(kgf/ ff[Gauge])(1) COOL operation

1Both indoor and outdoor units are under the same temperature/humidity condition.


20 50

25 60

30 70


on indoor unit.2.Press emergency run ON/OFF button.3.Compressor starts running at rated frequency.4.Indoor fan runs at High speed and continues for 30 minutes.5.To cancel this operation, press emergency operation button

or any button on remote controller.2Air flow speed : High3Inverter output frequency : 33Hz

①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

15 20 25 30 350.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

15 20 25 30 351

2

3

4

5


(:)(%)

33Hz

(MPa[Gauge])

5 10 15 20 252

3

4

5

6

7

8


45Hz

Out

door

low

pre

ssur

e


(:)(%)

33Hz

Out

door

uni

t cur

rent

(A

)O

utdo

or u

nit c

urre

nt (

A)

(kgf/F[Gauge])

15

10

11

12

13

14

9

8

7

6

5

50 60 7050 60 70

OB319--2.qxp 03.12.3 0:56 PM

40

3. 12-class unit in single operation (OUTDOOR UNIT : MXZ-A18WV)NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system).


1Both indoor and outdoor units are under the sametemperature/humidity condition.


20 50

25 60

30 70


on indoor unit.2.Press emergency operation button.3.Compressor starts running at rated frequency.4.Indoor fan runs at HI speed and continues for 30 minutes.5.To cancel this operation, press emergency operation button


①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

15 20 25 30 350.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

15 20 25 30 351

2

3

4

5


(:)(%)

33Hz

(MPa[Gauge])

5 10 15 20 252

3

4

5

6

7

8


45Hz

Out

door

low

pre

ssur

e


(:)(%)

33Hz

Out

door

uni

t cur

rent

(A

)O

utdo

or u

nit c

urre

nt (

A)

(kgf/F[Gauge])

15

10

11

12

13

14

9

8

7

6

5

50 60 7050 60 70

OB319--2.qxp 03.12.3 0:56 PM

41

4. 07-class unit in single operation (OUTDOOR UNIT : MXZ-A26WV, MXZ-A32WV)NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system).


1Both indoor and outdoor units are under the same temperature/humidity condition.


20 50

25 60

30 70

<How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT.The switch is locat-

ed on indoor unit.2.Press emergency operation button.3.Compressor starts running at rated frequency.4.Indoor fan runs at High speed and continues for 30 minutes.5.To cancel this operation,press emergency operation button

or any button on remote controller.

①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

5 10 15 20 252

3

4

5

6

7


32Hz

Out

door

uni

t cur

rent

(A

)

Ambient temperature(:)/ Ambient humidity(%) Ambient temperature(:)/ Ambient humidity(%)

Out

door

low

pre

ssur

e

(MPa[Gauge])(kgf/F[Gauge])

Out

door

uni

t cur

rent

(A

)

15 20 25 30 3550 60 70

0.6

0.7

0.8

0.9

1.0

1.1

1.2

(:)(%)

15 20 25 30 3550 60 70

(:)(%)

24Hz

1

2

3

4

5

24Hz

12

11

10

9

8

7

6

2Air flow speed : High3Inverter output frequency : 24Hz

OB319--2.qxp 03.12.3 0:56 PM

42


The conversion factor is : 1(MPa[Gauge]) =10.2(kgf/ ff[Gauge])(1) COOL operation1Both indoor and outdoor units are under the same

temperature/humidity condition.


20 50

25 60

30 70




①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

5 10 15 20 252

3

4

5

6

7


32Hz

Out

door

uni

t cur

rent

(A

)


Out

door

low

pre

ssur

e


Out

door

uni

t cur

rent

(A

)

0.6

0.7

0.8

0.9

1.0

1.1

1.2

24Hz

1

2

3

4

5

24Hz

12

11

10

9

8

7

6

15 20 25 30 3550 60 70

(:)(%)

15 20 25 30 3550 60 70

(:)(%)

OB319--2.qxp 03.12.3 0:56 PM

43



1Both indoor and outdoor units are under the sametemperature/humidity condition.


20 50

25 60

30 70




①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

5 10 15 20 252

3

4

5

6

7


32Hz

Out

door

uni

t cur

rent

(A

)


Out

door

low

pre

ssur

e


Out

door

uni

t cur

rent

(A

)

0.7

0.8

0.9

1.0

1.1

1.2

1.3

24Hz

1

2

3

4

5

24Hz

13

12

11

10

9

8

7

15 20 25 30 3550 60 70

(:)(%)

15 20 25 30 3550 60 70

(:)(%)

OB319--2.qxp 03.12.3 0:56 PM

44



①

➁

Both indoor and outdoor units are under the sametemperature/humidity condition.


20 50

25 60

30 70


ed on indoor unit.2.Press emergency operation button.3.Compressor starts running at rated frequency.4.Indoor fan runs at High speed.5.To cancel this operation,press emergency operation button

or any button on remote controller.Air flow speed : HighInverter output frequency : 24Hz➂

①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

5 10 15 20 252

3

4

5

6

7


32Hz

Out

door

uni

t cur

rent

(A

)


Out

door

low

pre

ssur

e


Out

door

uni

t cur

rent

(A

)

0.7

0.8

0.9

1.0

1.1

1.2

1.324Hz

1

2

3

4

5

24Hz

13

12

11

10

9

8

7

15 20 25 30 3550 60 70

(:)(%)

15 20 25 30 3550 60 70

(:)(%)

OB319--2.qxp 03.12.3 0:56 PM

45



①

➁



20 50

25 60

30 70




①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

5 10 15 20 252

3

4

5

6

7


32Hz

Out

door

uni

t cur

rent

(A

)


Out

door

low

pre

ssur

e


Out

door

uni

t cur

rent

(A

)

0.8

0.9

1.0

1.1

1.2

1.3

1.4

24Hz

1

2

3

4

5

24Hz

14

13

12

11

10

9

8

15 20 25 30 3550 60 70

(:)(%)

15 20 25 30 3550 60 70

(:)(%)

OB319--2.qxp 03.12.3 0:56 PM

46



①

➁



20 50

25 60

30 70




①

➁

Indoor Outdoor



WB(°C) 14.5

DB(°C) 2 7 15 20.0

WB(°C) 1 6 12 14.5

5 10 15 20 252

3

4

5

6

7


32Hz

Out

door

uni

t cur

rent

(A

)


Out

door

low

pre

ssur

e


Out

door

uni

t cur

rent

(A

)

0.8

0.9

1.0

1.1

1.2

1.3

1.4

24Hz

1

2

3

4

5

24Hz

14

13

12

11

10

9

8

15 20 25 30 3550 60 70

(:)(%)

15 20 25 30 3550 60 70

(:)(%)

OB319--2.qxp 03.12.3 0:56 PM

47

MICROPROCESSOR CONTROL11

CompressorpowerfactorIndoor unit

microprocessor

SSR61 Drivecircuit

Transistormodule

Indoor UnitB

Indoor UnitB

Comp.



Gas pipe temperaturethermistor RT6B

Gas pipe temperaturethermistor RT6A

Indoor UnitA

Indoor UnitA

Outdoorfan motorMF

x 61x 62

DefrostthermistorRT62

LEV (A)

LEV (B)

Outdoor unit control microprocessor

Compressorprimarycurrent

Compressorsecondarycurrent

Fin temperaturethermistor RT65

R. V. coil21S4

Input signal

Output signal

High-pressure protectthermistor RT68

MXZ-A18WV - E1

11-1. INVERTER MULTI SYSTEM CONTROL

OB319--2.qxp 03.12.3 0:56 PM

48

Transistormodule

Drivecircuit

Fan motordrive

micropro-cessor

IPM/PFCDrive

microprocessor

Transistormodule

Drivecircuit

PFCmodule

Compressorsecondary current

Comp-ressorprimarycurrent


Indoor unitmicroprocessor

SSR61

Indoor UnitA

Indoor UnitC

Indoor UnitB

Gas pipetemperaturethermistorRT6A, B, C

Muffler

Comp.


Indoor UnitA Evaporation

temperaturethermistorRT63

Outdoorfan motorMF

DefrostthermistorRT62LEV A

LEV E

LEV B

LEV C

Indoor UnitB

Indoor UnitC


R. V. coil21S4

High-pressure switch 63H1

Input signal

Output signal


MXZ-A26WV - E1

OB319--2.qxp 03.12.3 0:56 PM

49

Indoor unitmicroprocessor

SSR61IPM/PFC

Drivemicroprocessor

Transistormodule

Drivecircuit

PFCmodule

Indoor UnitA

Indoor UnitD

Indoor UnitC

Indoor UnitB

Gas pipetemperaturethermistorRT6A, B, C, D

Comp.

Compressorsecondary current


Indoor UnitA


Outdoorfan motorMF

Transistormodule

Drivecircuit

Fan motordrive

micropro-cessor

DefrostthermistorRT62LEV A

LEV E

LEV B

LEV C

LEV D

Indoor UnitB

Indoor UnitC

Indoor UnitD


Comp-ressorprimarycurrent


R. V. coil21S4

Input signal

Output signal

High-pressure switch 63H1


MXZ-A32WV - E1

OB319--2.qxp 03.12.3 0:56 PM

50

<Control status>The control performs when the all the following status are satisfied;• When one or more indoor units are operating in HEAT mode. (Excluding thermostat OFF)• When discharge temperature becomes 107; or more.• When it passed 60 minutes or more since the operation has started or the last refrigerant recovery has controlled.

<Control details>LEV opening of indoor unit not operating is controlled to be 80 pulse.

<Control finish status>The control finishes either as follows. However, the LEV opening is considered to be 59 pulse.• When it passed 60 seconds since the control has started.• When the discharge temperature is 90; or less.

Fan speed is switched according to the number of operating indoor unit and the compressor frequency.

Note•When the indoor coil thermistor is 57; or more on HEAT operation, fan speed is fixed to Low speed.Or, the indoor coil thermistor is 45; or less on HEAT operation, fan speed is back to normal.

11-4.Refrigerant recovery control on heating

11-5.Outdoor fan control

COOL

Fan speed

Up

Down

Up

Down

1 unit 2 unitsMode

HEAT

Indoor unit operation

COOL

Fan speed

Up

Down

Up

Down

1 unit 2 units 3, 4 unitsMode

HEAT

Indoor unit operation

<Relation between compressor frequency and fan speed.>MXZ-A18WV

60Hz

50Hz

60Hz

50Hz

60Hz

50Hz

60Hz

50Hz

MXZ-A26WV, A32WV

45Hz

35Hz

50Hz

40Hz

50Hz

40Hz

55Hz

45Hz

55Hz

45Hz

60Hz

50Hz

UpDownFan speed

High

LowCompressor frequencyMin. Max.

11-2.Heat defrosting control(1) Conditions to enter defrosting mode

1. When temperature of defrosting thermistor is -3; or less.2.When specified non-defrosting time, is counted in the control p.c.board is satisfied.(Total time of compressor operating)Going to defrosting mode at both condition of 1 and 2.

(2) Defrosting operation1. Compressor stops for 50 seconds, Indoor fan is off, Defrosting lamp lights.2.4-way valve reverses flow, Compressor operates by the frequency in heat defrosting control.3. After compressor stops for 35 seconds, 4-way valve reverses flow, then defrosting finishes.

(3) Conditions to finish defrosting mode1. When the defrosting thermistor temperature is 13.2; or more.2. When it has spent 10 minutes for defrosting.Defrosting finishes at condition of 1 or 2.

This protection controls the compressor ON/OFF and operation frequency according to temperature of the discharge temperature thermistor.(1) Compressor ON/OFF

When temperature of the discharge temperature thermistor exceeds 116;, the control stops the compressor.When temperature of the discharge temperature thermistor is 80; or less, the controls starts the compressor.

(2) Compressor operation frequencyWhen temperature of the discharge temperature thermistor is expected to be higher than 116;, the control decreases 12Hzfrom the current frequency.When temperature of the discharge temperature thermistor is expected to be higher than 111; and less than 116;, the con-trol decreases 6Hz from the current frequency.When temperature of the discharge temperature thermistor is expected to be higher than 104; and less than 111;, the con-trol is set at the current frequency.

11-3.Discharge temperature protection control

OB319--2.qxp 03.12.3 0:56 PM

51

Discharge temperature thermistor

Indoor pipe temperature thermistor

Defrost thermistor

Evaporation temperature thermistor

Gas pipe temperature thermistor

Fin temperature thermistor

High-pressure protect thermistor

Capacity code

Purpose

Protection

Defrosting Protection

Defrosting

Control

Control

Protection

Protection

Control

Compressor LEV Outdoor fan motor

Reversingvalve

SensorActuator

Relation between main sensor and actuator.11-7.Relation between main sensor and actuator

11-6.Cooling at low outside temperatureUnlike the usual fan control, the number of rotation is controlled to let the temperature of the outdoor heat exchanger become around 40: when the unit is operating in COOL mode at low outside temperature.

<Details of Fan Control>(a) The number of rotation will be increased when the temperature of the outdoor heat exchanger is high.(b) The number of rotation will be decreased when the temperature of the outdoor heat exchanger is low.

The number of rotation will be lowered to around 100 rpm (rotation per minute) when just a few indoor units are operating or when the outside temperature is low.When the number of rotation is lowered to around 100 rpm, the fan may stop by the influence of wind, but restarts 30 seconds later.

MXZ-A18WV


Indoor pipe temperature thermistor

Defrost thermistor


Gas pipe temperature thermistor


Outdoor heat exchanger temperature

Capacity code

Purpose

Protection

Defrosting Protection

Defrosting

Control

Control

Protection

Protection

Control

Compressor LEV Outdoor fan motor

Reversingvalve

SensorActuator

MXZ-A26WV, A32WV

OB319--2.qxp 03.12.3 0:56 PM

52

TROUBLESHOOTING12

Operation start

Check the outdoor unit LED indicator.

A Check of power supplySee page 58.

• Indoor unit serial signal errorB Check of serial signalSee page 59.

• COOL or HEAToperation onlyC Check of R.V.coilSee page 60.

• When cooling, room does not cool.E Check of inverter,compressorSee page 62 or 63.

• When cooling, heat exchanger of non-operating indoor unit frosts.•When heating, non- operating indoor unit gets warm.D Check of LEVSee page 61.

• When cooling,dew drops in the non-operating indoor unit.Check of mis-piping

• When heating,room does not get warm.E Check of inverter, compressorSee page 62 or 63.Check mis-piping, shortage of capacity

Refer to indicator liston page 53,54,55 and 56.

OFF

Both LED 1 and LED 2 lighting

LED 1 or LED 2has blinked.

MXZ-A18WV -MXZ-A26WV -MXZ-A32WV - E1

E1

E1

3. Troubleshooting procedure1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality.

To make sure, check how many times the abnormality indication is flashing on and off before starting service work.2) If the electronic control P.C. board is supposed to be defective, check the copper foil pattern for disconnection and the

components for bursting and discoloration.3) When troubleshooting, refer to the flow chart on this page and the check table on page 53, 54, 55 and 56.

Lead wiring Housing point

12-1. Cautions on troubleshooting1. Before troubleshooting, check the following:

1) Check the power supply voltage.2) Check the indoor/outdoor connecting wire for mis-wiring.

2. Take care the following during servicing.1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the unit, and then after con-

firming the horizontal vane is closed, turn off the breaker and/or disconnect the power plug.2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the electronic

control P.C. board.3) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the

components.4) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.


E1

E1

12-2. Instruction of troubleshooting• Check the indoor unit with referring to the indoor unit service manual, and confirm that there is any problem in the indoor

unit.Then, check the outdoor unit with referring to this page.

OB319--2.qxp 03.12.3 0:56 PM

53

12-3. Troubleshooting check table

MXZ-A18WV - E1

IndicationAbnormal point Detecting method

Symptom: Outdoor unit does not operate.

Check pointsLED 1(Red)

Lighting Twice Outdoor power system When the compressor operation has been interrupted by over current protection continuously three times within 1 minute after start-up. • Check the inverter/compressor.

Lighting 8 times Active filter module When active filter module self-protection has been performed continuously three times.

• Replace the outdoor electronic controlP.C. board.


• Check the abnormality indication on the indoor unit.

• Check the LEV.

Lighting 7 times Outdoor control system

Lighting Once Indoor unit and LEV

When the nonvolatile memory data cannot be read properly on the outdoor electronic control P.C. board.

• Replace the outdoor electronic control P.C. board.

Lighting 9 times DC voltage sensing circuit

When DC voltage sensing circuit detects 57V or below or 395V or above.

When the drain abnormality is detected in the indoor unit and the indoor unit coil temperature is too low, or when any abnormality is detected in the components of indoor unit.

LED 2(Yellow)

LED 1 (Red)Lighting

LED 2 (Yellow)Lighting

Error modeNormal


Symptom: It is repeated that outdoor unit stops and restarts 3 minutes later.


Lighting High-pressure protect thermistor

When high-pressure protect thermistor is short or open while compressor is operating.


• Check the amount of gas and the refrigerant cycle.

• Check the outdoor unit air passage.

• Check the characteristic of the discharge temperature thermistor.

• Check the connector. (CN662)Lighting 3 times Discharge temperature

thermistorWhen a short or open circuit occurs in the discharge temperature thermistor during compressor operating.

Twice Goes out Overcurrent protection When overcurrent is applied to the power module.

5 times Goes out High-pressure protection When high-pressure protect thermistor detects 69: or more.

3 times Goes out Discharge temperature overheat protection

When the discharge temperature thermistor detects 116: or above.(Protection will be released at 100: or below.)

4 times Goes out Fin temperature overheat protection When the fin temperature thermistor detects 87: or above.

4 times Goes out P.C. board temperature overheat protection

When the P.C. board temperature thermistor detects 70: or above.

• Check the characteristic of the evaporation temperature thermistor.

• Check the connector. (CN662)

• Check the characteristic of the high pressure protect thermistor.


Lighting 5 times

5 times


When a short or open circuit occurs in the evaporation temperature thermistor during compressor operating.

• Check the characteristic of the gas pipe temperature A thermistor.

• Check the connector. (CN661)Lighting 10 times

Gas pipe temperature A thermistor

When a short or open circuit occurs in the gas pipe temperature A thermistor during compressor operating.

• Check the characteristic of the gas pipe temperature B thermistor.


• Check the outdoor unit air passage.• Check the outdoor fan motor.• Check the power module.

• Check the outdoor unit air passage.• Check the outdoor fan motor.• Replace the outdoor electronic control

P.C. board.

• Check the outdoor unit air passage.• Check the outdoor fan motor.

• Check the inverter/compressor.• Check the amount of gas.• Check the indoor/outdoor air flow for

short cycle.• Check the indoor unit air filter for clogging.

Gas pipe temperature B thermistor

When a short or open circuit occurs in the gas pipe temperature B thermistor during compressor operating.

• Check the characteristic of the fin temperature thermistor.



When a short or open circuit occurs in the fin temperature thermistor during compressor operating.

P.C. board temperature thermistor

When a short or open circuit occurs in the P.C. board temperature thermistor during compressor operating.

LED 2(Yellow)

OB319--2.qxp 03.12.3 0:56 PM

54


Symptom: Outdoor unit operates.


Lighting 6 times Power factor detection When the compressor power factor cannot be detected. • Check the compressor wiring.

• Check the characteristic of the defrost temperature thermistor.


Lighting 9 times Service mode

Lighting 5 times Defrost thermistor

When operating unit with compressor relay connector disconnected.

Lighting 8 times Active filter module protection When active filter module self-protection has been performed.

When a short or open circuit occurs in the defrost thermistor during heating.

LED 2(Yellow)


Symptom: Outdoor unit operates (The compressor operates at reduced frequency)


These symptoms do not mean any abnormality of the product, but check the following points.• Air filter clogging• Amount of gas• Short cycle of indoor/outdoor air flow

Once Lighting Current protection When the outdoor unit input current exceeds 13A.

6 times Lighting Overload protection When the compressor load exceeds the specified value.

Twice Lighting High-pressure protection When indoor gas pipe temperature exceeds 55˚C during heating.

Twice Lighting Defrosting in cooling When indoor gas pipe temperature falls to 6˚C or below during cooling.

3 times Lighting Discharge temperature protection

When the discharge temperature exceeds 104˚C.

4 times Lighting Low discharge temperature protection

When the state with low discharge temperature of which 37˚C or below in COOL and 35˚C or below in HEAT for lasts 20 minutes.

5 times Lighting High-pressure protection When high-pressure protect thermistor detects 58: or more.

LED 2(Yellow)

OB319--2.qxp 03.12.3 0:56 PM

55

MXZ-A26WV - MXZ-A32WV - E1E1


Symptom: Outdoor unit does not operate.


Lighting Twice Outdoor power system

When the compressor operation has been interrupted by over current protection continuously three times within 1 minute after start-up, or when power factor control module protection or DC control protection is activated three times within 3 minutes after the compressor get started.

• Check the inverter/compressor.


• Check the abnormality indication on the indoor unit.

• Check the LEV.

Lighting 7 times Outdoor control system

Lighting Once Indoor unit and LEV

When the nonvolatile memory data cannot be read properly on the outdoor electronic control P.C. board.

When the drain abnormality is detected in the indoor unit and the indoor unit coil temperature is too low, or when any abnormality is detected in the components of indoor unit.

LED 2(Yellow)

LED 1 (Red)Lighting

LED 2 (Yellow)Lighting

Error modeNormal


Symptom: It is repeated that outdoor unit stops and restarts 3 minutes later.


Lighting Outdoor heat exchangertemperature thermistor

When outdoor heat exchanger temperature thermistor is short or open while compressor is operating.


• Check the amount of gas and the refrigerant cycle.

• Check the outdoor unit air passage.

• Check the characteristic of the discharge temperature thermistor.

• Check the connector. (CN661)Lighting 3 times Discharge temperature

thermistorWhen a short or open circuit occurs in the discharge temperature thermistor during compressor operating.

Twice Goes out Overcurrent protection When overcurrent is applied to the power module.

3 times Goes out Discharge temperature overheat protection

When the discharge temperature thermistor detects 116: or above.(Protection will be released at 100: or below.)

4 times Goes out Fin temperature overheat protection When the fin temperature thermistor detects 87: or above.

• Check the characteristic of the evaporation temperature thermistor.


• Check the characteristic of the high pressure protect thermistor.


Lighting 5 times

5 times

Lighting Current sensor When the output from compressor current sensor becomes 25A or more while the compressor is operating.

• Check if the connection lead wires of compressor are correctly connected.6 times


When a short or open circuit occurs in the evaporation temperature thermistor during compressor operating.

• Check if the connection wires between outdoor electronic control P.C. board and power board are correctly connected.

Lighting 11 times Communication errorbetween P.C. boards

When the communication failure between the outdoor electronic controlP.C. board and power board occurs twice consecutively.

• Check if the connection wires between noise filter P.C. board and power board are correctly connected.

Lighting 12 times Zero cross signal error When zero cross signal cannot be detected while the compressor is operating.

• Check the characteristic of the gas pipe temperature A thermistor.


Lighting 10 times

Gas pipe temperature A thermistor

When a short or open circuit occurs in the gas pipe temperature A thermistor during compressor operating.

• Check the characteristic of the gas pipe temperature B thermistor.


• Check the outdoor unit air passage.• Check the outdoor fan motor.• Check the power module.

• Check the inverter/compressor.• Check the amount of gas.• Check the indoor/outdoor air flow for

short cycle.• Check the indoor unit air filter for clogging.

Gas pipe temperature B thermistor

When a short or open circuit occurs in the gas pipe temperature B thermistor during compressor operating.

• Check the characteristic of the gas pipe temperature C thermistor.

• Check the connector. (CN662)Gas pipe temperature C thermistor

When a short or open circuit occurs in the gas pipe temperature C thermistor during compressor operating.

• Check the characteristic of the gas pipe temperature D thermistor.

• Check the connector. (CN662)Gas pipe temperature D thermistor

When a short or open circuit occurs in the gas pipe temperature D thermistor during compressor operating.

• Check the characteristic of the fin temperature thermistor.



When a short or open circuit occurs in the fin temperature thermistor during compressor operating.

P.C. board temperature thermistor

When a short or open circuit occurs in the P.C. board temperature thermistor during compressor operating.

LED 2(Yellow)

OB319--2.qxp 03.12.3 0:56 PM

56


Symptom: Outdoor unit operates.


• Check the characteristic of the defrost temperature thermistor.


Lighting 9 times Service mode

Lighting 5 times Defrost thermistor

When the unit operates EMERGENCY OPERATION.

When a short or open circuit occurs in the defrost thermistor during heating.

LED 2(Yellow)


Symptom: Outdoor unit operates (The compressor operates at reduced frequency)


These symptoms do not mean any abnormality of the product, but check the following points.• Air filter clogging• Amount of gas• Short cycle of indoor/outdoor air flow

Once Lighting Current protection When the outdoor unit input current exceeds 14.5A.

Twice Lighting High-pressure protection When indoor gas pipe temperature exceeds 55˚C during heating.

Twice Lighting Defrosting in cooling When indoor gas pipe temperature falls to 6˚C or below during cooling.

3 times Lighting Discharge temperature protection

When the discharge temperature exceeds 104˚C.

4 times Lighting Low discharge temperature protection

When the state with low discharge temperature of which 37˚C or below in COOL and 35˚C or below in HEAT lasts for 20 minutes.

5 times Lighting High-pressure protectionWhen outdoor heat exchanger temperature thermistor detects 58: or more.

LED 2(Yellow)


Symptom: It is repeated that outdoor unit stops and restarts 3 minutes later


5 times Goes out High-pressure protectionWhen outdoor heat exchanger temperature thermistor detects 69: or more.When high-pressure switch detects 4MPa or more.

4 times Goes out P.C. board temperature overheat protection

When the P.C. board temperature thermistor detects 70: or above.

• Check the outdoor unit air passage.• Check the outdoor fan motor.• Replace the outdoor electronic control

P.C. board.

• Check the outdoor unit air passage.• Check the outdoor fan motor.

8 times Goes outPower factor control module protection

When the overcurrent to power factor controller occurs or the output voltage from power factor controller becomes 400V or more.

• Check the input voltage.• Check the inverter.

9 times Goes out DC voltage protectionWhen it's detected that DC voltage becomes 200V or less, or reaches 400V or more.

• Check the voltage of power supply.• Check the inverter.

13 times Goes out Fan motor protectionWhen fan motor current is 2A or more, or when the abnormality is detected in the feedback signal from fan motor.

• Check the outdoor fan motor.• Check the fan motor connector.

LED 2(Yellow)

OB319--2.qxp 03.12.3 0:56 PM

57

Part name Check method and criterion

Measure the resistance using a tester.(Part temperature : -10°C ~ 40°C)

Defrost thermistor Evaporation/ Gas pipe/High-pressure protect/Outdoor heat exchangertemperature thermistor

Normal abnormal5kΩ ~ 55kΩ Open or short-circuit

Normal abnormal100kΩ ~ 250kΩ Opened or short-circuit

Normal abnormal

2.6kΩ ~ 3.3kΩ Open or short-circuit

Normal abnormal

1Each phase 2.25Ω ~ 2.76Ω Open or short-circuit

Measure the resistance using a tester, after warming up the thermistor by holding by hand.(Part temperature : 20°C ~ 40°C)Discharge temperature

thermistor

Measure the resistance between terminals using a tester.(Winding temperature : -10°C ~ 40°C)

CompressorW

UVWHT

RED

BLK

Measure the resistance between lead wires using a tester.(Part temperature : -10°C ~ 40°C)

Outdoor fan motor

Normal

WHT - BLKBLK - YLWBLK - RED

Open or short-circuit

WHT

Protector specificationShortOpen

87I15:135I5:

YLW

P ORNREDBLK

123.0Ω ~ 150.0Ω30.0Ω ~ 36.0Ω

181.0Ω ~ 221.0Ω

abnormal

Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)

R. V. coil

Measure the resistance using a tester.(Part temperature : -10°C ~ 40°C)Linear expansion valve

LEV

WHT

RED

YLW BRN

ORN

BLU

Color of lead wire NormalWHT - REDRED - ORNYLW - BRNBRN - BLU

Abnormal


37.4Ω ~ 53.9Ω

P Inner protector

MXZ-A18WV - MXZ-A26WV - MXZ-A32WV - E1E1E1

MXZ-A18WV1Each phase 1.29Ω ~ 1.49Ω

MXZ-A26/A32WV

MXZ-A18WV

URED

WHT

BLK

V

W

(W)

(V)

(U)

Normal

RED - BLKBLK - WHTWHT - RED


(Not including WHT - ORN)

13.4Ω ~ 16.4Ω

abnormalMXZ-A26/A32WV

Pressure Normal abnormalOperation OFF

HPS13.7 ± 0.15MPa4.8 MPa Open

Short Other thanthose list-ed at left0.05

0.1+-

High pressure switch(HPS)

MXZ-A26/A32WV

MXZ-A18WV

MXZ-A26/A32WV Color of lead

wire

Color of leadwire

Normal abnormal25kΩ ~ 100kΩ Open or short-circuit

Measure the resistance using a tester.(Part temperature : 10°C ~ 40°C)


OB319--2.qxp 03.12.3 0:56 PM

58

Turn on power supply.

No

Yes

Yes

No No

Yes

Yes

No

Yes

Replace the reactor.

Start

Check the connecting of parts of main power supply circuit.

Is there voltage of 230V AC in the power supply terminal block?

Is there voltage of 325V DC across the smoothing capacity (C61)?

Check the power supply cable.

Replace the outdoor electronic control P. C. board.

Replace the noise filter P. C. board.

Is there voltage of 230V AC across the input terminal part in the diode module (TAB61 and TAB62)?

Is fuse (F61) blown?

Replace the fuse.

Is the resistance ∞ between terminalof reactor (L) ?

AA Check of power supply

Outdoor unit does not operate. (LED display: display OFF)

MXZ-A18WV

MXZ-A26/A32WV

Turn on power supply.

No

Yes

Yes

No No

Yes

No

Yes

Yes

NoReplace the power board.

Start

Check the connecting of parts of main power supply circuit.

Is there voltage of 230V AC in the power supply terminal block?

Is the output voltage from the noisefilter P.C. board 230V AC?

Is the input voltage to the outdoor electronic control P.C. board 325V DC?

Check the power supply cable.


Replace the noise filter P. C. board.Is fuse (F912) blown?

Is the input voltage to the power board230V AC?

Replace the fuse.

Replace the reactor.

OB319--2.qxp 03.12.3 0:56 PM

59

BB Check of outdoor unit serial signal

No

Yes

Start

1. Check the indoor unit with referring to "How to check mis-wiring and serial signal error" in service manual of indoor unit.2. Turn off the power supply of the indoor and outdoor unit and connect the indoor/ outdoor unit connecting wire correctly.3. Check the connection of indoor/ outdoor unit connecting wire in the outdoor unit terminal block, and check the connection

of the connector CN601: unit A, CN602: unit B (MXZ-A18WV)/ CN601: unitA, CN602: unitB, CN603: unitC, CN604: unitD (MXZ-A26/A32WV) in the outdoor electronic control P. C. board.4. Disconnect the lead wire to the compressor. 3 minutes after turning on the power supply, start EMERGENCY

OPERATION.

Is there voltage from 5V DC to 10V DC between No. 3 (+) and N (-) in the outdoor terminal block?


Recheck a connected circumstance of the indoor/ outdoor unit connecting wire.

Outdoor unit does not operate. (LED display: Both LED1 and LED2 lighting)

OB319--2.qxp 03.12.3 0:56 PM

60

CC Check of R. V. coil

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

Start

1. Disconnect the lead wire leading to the compressor.2. 3 minutes after turning on the power supply, start EMERGENCY

OPERATION in HEAT mode.

Is there voltage of 230V AC between pin1 and pin 2 at connector CN912?

Turn off power supply of indoor and outdoor unit.

1. Turn off power supply of indoor and outdoor unit, and disconnect the connector CN851 (MXZ-A18WV)/ CN781

(MXZ-A26/A32WV) in the outdoor electronic control P.C. board.2. 3 minutes after turning on the power supply, start

EMERGENCY OPERATION in HEAT mode.

Replace the 4-way valve.Replace the noise filter P.C. board.

Replace the R.V. coil.

Is there voltage 12V DC between the connector CN851 pin 3 (+) and pin 4 (-) (MXZ-A18WV)/ CN781 pin 5 (+) and pin 3 (-) (MXZ-A26/A32WV)?

Replace the electronic control P.C. board.

Disconnect the connector CN912 in noise filter P. C. board. Is there normal resistance to R.V. coil?

Start

1. Disconnect the lead wire leading to the compressor.2. 3 minutes after turning on the power supply, start EMERGENCY

OPERATION in COOL mode.

Is there voltage of 230V AC between pin1 and pin 2 at connector CN912?

1. Turn off power supply of indoor and outdoor unit, and disconnect the connector CN851 (MXZ-A18WV)/ CN781

(MXZ-A26/A32WV) in the outdoor electronic control P. C. board.2. 3 minutes after turning on the power supply, start

EMERGENCY OPERATION in COOL mode.

Replace the 4-way valve.


Is there voltage 12V DC between the connector CN851 pin 3 (+) and pin 4 (-) (MXZ-A18WV)/ CN781 pin 5 (+) and pin 3 (-) (MXZ-A26/A32WV)? W


W If the connector CN912 is not connected or R. V. coil is open, voltage occurs between terminals even when the control is OFF.

• When heating operation does not work.

• When cooling operation does not work.

The cooling operation or heating operation does not operate. (LED display: Both LED1 and LED2 lighting)

OB319--2.qxp 03.12.3 0:56 PM

61

DD Check of LEV

No

Yes

No

Yes

Start

Turn on power supply to the outdoor unit after checking LEV coil is mounted to the LEV body securely.

Is "click - click" sound heard?Or, do you feel vibration of the LEV coil with a hand?

Disconnect the connector CN771: LEV A, CN772: LEV B (MXZ-A18WV)/ CN791: LEV A, CN792: LEV B, CN793: LEV C,CN794: LEVD, CN795: LEV E (MXZ-A26/A32WV). Is there normal resistance to LEV coil?

Normal


Replace the LEV coil.

• When cooling, heat exchanger of non-operating indoor unit frosts.• When heating, non-operating indoor unit get warm.

LED display: LED1 LED2Lighting Lighting6 time Goes out

OB319--3.qxp 03.12.3 0:58 PM

62

EE Check of inverter/ compressor

No

Yes

YesNo

Yes

No

Start

Disconnect the terminal of the compressor at terminals. 3 minutes after turning on the power supply, start EMERGENCY OPERATION.

Is output balanced?

Clarify the causes by counting time until the inverter stops.0 to 10 seconds: compressor rare short 10 to 60 seconds: compressor lock60 seconds to 5minutes: refrigerant circuit defective5 minutes or more: normal

Measure the voltage between each lead wire leading to the compressor.U (BLK) - V (WHT) V (WHT) - W (RED) W (RED) - U (BLK)Output voltageCOOL: 150V(58Hz), HEAT: 150V (58Hz) Is voltage output? W

Turn off power supply of indoor and outdoor unit, and measure the compressor winding resistance between the compressor terminals.Is there resistance of 0.53" to 0.66" betweenthe each terminals?


Reconnect the lead wire of compressor to former, and turn on power supply to indoor and outdoor unit. 3 minutes later, start EMERGENCY OPERATION.

Replace the compressor.

W • After the outdoor fan starts running, wait for 1 minutes or more beforemeasuring the voltage.

• The output voltage values have the tolerance of i20%.

• When heating, room does not get warm.• When cooling, room does not get cool.

LED display: LED1 LED2Lighting LightingLightingTwice

TwiceGoes out

MXZ-A18WV

OB319--3.qxp 03.12.3 0:58 PM

63

No

No

Yes

Yes

Yes

No

Yes

No

Start

Disconnect the terminal of the compressor. 3 minutes after turning on the power supply, start EMERGENCY OPERATION.

Is output balanced?

Clarify the causes by counting time until the inverter stops.0 to 10 seconds: compressor rare short 10 to 60 seconds: compressor lock60 seconds to 5minutes: refrigerant circuit defective5 minutes or more: normal

Measure the voltage between each lead wire leading to the compressor.U (BLK) - V (WHT) V (WHT) - W (RED) W (RED) - U (BLK)Output voltageCOOL: 150V(48Hz) HEAT: 170V(64Hz)Is voltage output? W

Turn off power supply of indoor and outdoor unit, and measure the compressor winding resistance between the compressor terminals.Is the resistance between each terminal normal?

Is the input voltage to the outdoor electronic control P.C. board 370V or more?

Reconnect the lead wire of compressor to former, and turn on power supply to indoor and outdoor unit. 3 minutes later, starts EMERGENCY OPERATION.

Replace the compressor.

Replace the power board.

W • After the outdoor fan starts running, wait for 1 minutes or more beforemeasuring the voltage.

• The output voltage values have the tolerance of i20%.

MXZ-A26/A32WV

OB319--3.qxp 03.12.3 0:58 PM

64

FF Check of outdoor unit thermistor

Normal

Yes

No

Abnormal

Reconnect the connector CN661, CN662 and CN663 on the outdoor electronic control P.C. board, and disconn-ect the lead wire leading to the compressor.3 minutes after turning on the power supply, start EMERGENCY OPERATION.

Start

Disconnect the connector in the outdoor electronic control P. C. board (see below table), and measure the resistance of thermistor to check whether the thermistor is normal or not.

ThermistorDischarge temperature thermistorDefrost thermistorEvaporation temperature thermistorHigh-pressure protect thermistorGas pipe temperature A thermistor Gas pipe temperature B thermistor Fin temperature thermistor

SymbolRT61RT62RT63RT68RT6ART6BRT65

Connector, Pin No.Between CN662 pin3 and pin4Between CN662 pin1 and pin2Between CN662 pin5 and pin6Between CN662 pin7 and pin8Between CN661 pin1 and pin2Between CN661 pin3 and pin4Between CN663 pin1 and pin2

Does thermistor operate 10 minutes or more though the thermistor abnormality is not displayed?

Replace the thermistor.

Normal


• When thermistor is abnormal. (When the LED display is a table below.)

MXZ-A18WV

MXZ-A26/A32WV

Normal

Yes

No

Abnormal

Reconnect the connector CN661 and CN662 on the outdoor electronic control P.C. board and CN3 on the powerboard, and disconnect the lead wire leading to the compressor. 3 minutes after turning on the power supply, start EMERGENCY OPERATION.

ThermistorDischarge temperature thermistorDefrost thermistorEvaporation temperature thermistorOutdoor heat exchanger temperature thermistorGas pipe temperature thermistor (Unit A)Gas pipe temperature thermistor (Unit B)Gas pipe temperature thermistor (Unit C)Gas pipe temperature thermistor (Unit D)Fin temperature thermistor

SymbolRT61RT62RT63RT68RT6ART6BRT6CRT6DRT65

Connector, Pin No.Between CN661 pin3 and pin4Between CN661 pin1 and pin2Between CN661 pin5 and pin6Between CN661 pin7 and pin8Between CN662 pin1 and pin2Between CN662 pin3 and pin4Between CN662 pin5 and pin6Between CN662 pin7 and pin8Between CN3 pin1 and pin2

Start

Disconnect the connector in the electronic control P. C. board (see below table), and measure the resistance of thermistor to check whether the thermistor is normal or not.

Does thermistor operate 10 minutes or more though the thermistor abnormality is not displayed?

Replace the thermistor.

Normal


OB319--3.qxp 03.12.3 0:58 PM

65

GG Check of outdoor fan motor

Abnormal

Normal

Yes

No

No

Yes

No

Yes

Start

Check the connection of connector CN851 in the fan motor relay connector and outdoor electronic control P. C. board at the noise filter P. C. board and connector CN901 in the noise filter board.

Disconnect the fan motor connector, and measure the resistance of the fan motor winding to check the winding characteristic.

Is there voltage of 230V AC?

1. Turn off power supply of the indoor and outdoor unit, and disconnect the connector (CN851).

2. Is the voltage 0V, when the voltage between CN851 pin3 (+), pin7 (-), pin6 (-) are measured after the power supply is turned on the outdoor unit?

Replace the fan motor.

Replace the oudtoor electronic control P. C. board.

3 minutes after turning on the power supply, start EMERGENCY OPERATION. Is there voltage of 12V DC between CN851 pin3 (+) and pin6 (-)?

1. Disconnect the lead wire leading to the compressor. 3 minutes after turning on the power supply, start EMERGENCY OPERATION.

2. Check the voltage between pin 3 and pin 4, pin 3 and pin 5 at the fan motor connector.


• Fan motor does not operate or stops operating shortly after starting the operation.

MXZ-A18WV

MXZ-A26/A32WV

Yes

Yes

YesNo

No(Fixed to either 5V or 0V DC)

Start

Check the connection between the connector CN931 and CN932.

Disconnect CN932 from outdoor electronic control P.C. board, and turn on the power supply.

Rotate the outdoor fan motor manually and measure the voltage of CN931.Between 1(+) and 5(-)Between 2(+) and 5(-)Between 3(+) and 5(-)

Is the resistance between each terminalof outdoor fan motor normal?

Does the outdoor fan motor rotates smoothly?

Does the voltage between each terminal become 5V DC and 0V DCrepeatedly?

Replace the outdoor DC fan motor. Replace the outdoor electronic control P.C. board.

OB319--3.qxp 03.12.3 0:58 PM

66

HH Check of HPS

Infinity

0"

Yes

No

Yes

Start

1. Disconnect the connector CN681 in the electronic control P. C. board.2. Check the resistance of HPS after 1 minutes have passed since the outdoor unit power supply was turnd off.

Check the resistance between each terminal.

Reconnect CN681 to former.Turn on power supply to the indoor and outdoor unit.3 minutes lator, starts EMERGENCY OPERATION.

Is HPS protection displayed immediately after compressor starts?

Replace HPS.

Replace the electronic control P. C. board.

Normal

II The other cases

In the case that the indoor fan and outdoor fan operate but the compressor does not operate, it causes that the high pressure switch can be operated once.First of all, check the high pressure switch can be shorted, turn OFF the power and turn ON again 1 minute later.

Indoor unit dose not operate. (different operating models in multisystem)• When you try to run two indoor unit simultaneously, one for cooling and the other for heating, the unit which

transmits signal to the outdoor units earlier decides the operation mode. The other unit indicates as shown in the figure below.

• When the above situation occurs, set all the indoor units to the same mode, turn OFF the indoor units, andthen turn them back ON.

• Though the top of the indoor unit sometimes gets warm, this does not mean malfunction. The reason is that the refrigerant gas continuously flows into the indoor unit even while it is not operating.

OPERATION INDICATOR

Lighting Flashing

MXZ-A18/A26/A32WV

MXZ-A26/A32WV

• When the operation frequency does not go up from lowest frequency.

MXZ-A26/A32WV

OB319--3.qxp 03.12.3 0:58 PM

67

-20 -10 0 10 20 30 40

100

90

80

70

60

50

40

30

20

10

0

0 10 20 30 40 50 60 70 80

200

180

160

140

120

100

80

60

40

20

00 10 20 30 40 50 60 70 80 90 100 110 120

700

600

500

400

300

200

100

0

Res

ista

nce

(k'

)

Res

ista

nce

(k'

)

Res

ista

nce

(k'

)

Temperature (;)Temperature (;)

Temperature (;)

Discharge temperature thermistor (RT61)

Defrost temperature thermistor (RT62)Evaporation temperature thermistor (RT63)Gas pipe temperature thermistor (RT6A,6B)High-pressure protection thermistor (RT68)Fin temperature thermistor (RT65)

MXZ-A18WV -Outdoor electronic control P.C. board

E1 230V A

C 50H

zInput

(( Gas pipe tem

perature Atherm

istor (RT

6A)

Gas pipe tem

perature B therm

istor (RT

6B) (C

N661

((( Defrost therm

istor (RT

62)D

ischarge temperature therm

istor (RT

61)E

vaporation temperature therm

istor (RT

63)

(High-pressure protect therm

istor (RT

68)

CN

662)

(CN

663 Fin tem

perature thermistor (R

T65)

CN

771 Room

ALinear expansion valve (LE

V)

12V D

C pulse w

ave

Rush current relay (–)

Outdoor fan “H

igh” (–)O

utdoor fan “Low” (–)

R.V. coil (–)

Com

mon (+

)

)C

N851

12V D

C

(Com

mon (+

)

(Com

mon (–) (C

N772 R

oomB

Linear expansion valve (LEV

)12V

DC

pulse wave

(Com

mon (+

)

(Com

mon (–) (

LED

2

CN

601 5 ~

10V D

CS

erial signal Room

A

LED

1

(CN

602 5 ~

10V D

CS

erial signal Room

B

(

F801

FU

SE

1A/250V

OB319--3.qxp 03.12.3 0:58 PM

68

MXZ-A26WV - MXZ-A32WV -Outdoor electronic control P.C. board

E1E1

Serial signal Room D(+)

5~10V DC(–)

Serial signal Room C(+)

5~10V DC(–)

Serial signal Room B(+)

5~10V DC(–)

Serial signal Room A(+)

5~10V DC(–)

LED 1

LED 2

CN601325V DC

~370V DC

Input

( (

(

LEV

Room

A

(

12V D

Cpulse w

ave

(

LEV

Room

B

(

12V D

Cpulse w

ave

(

LEV

Room

C

(12V

DC

pulse wave

(

LEV

Room

D

(

12V D

Cpulse w

ave

(High pressure sw

itch

(Gas pipe D therm

istor

(Gas pipe C therm

istor

(Gas pipe B therm

istor

(Gas pipe A

thermistor

CN

93220-90V

AC

GN

D5V

5V D

Cpulse w

ave

( To fanm

otor

Defrost therm

istor (RT

62)

Discharge tem


T61)

Evaporation tem


T63)

Outdoor heat exchanger

temperature therm

istor (RT

68) ( ((+)

(–)(+)

Rush current relay(–)

R.V. coil (–)

( 12VD

C

15V15V(+

)(–)

CN

931 (C

N661

CN

701S

ignal transmission

(To power board)

5V D

C pulse w

ave

(+)

(–)

(G

ND

CN

702S

ignal reception(F

rom pow

er board)5V

DC

pulse wave

GN

D (pow

er board)

CN

781

CN

79512V

DC

pulse wave

LEV

E (

(

(

(

(

CN604

CN603

CN602

CN601

(+)

(–) ((+)

(–) ((+)

(–) ((+)

(–) (

CN

791

CN

792

CN

793

CN

794

CN

681

CN

662( ( ( (

-20 -10 0 10 20 30 40

100

90

80

70

60

50

40

30

20

10

0

0 10 20 30 40 50 60 70 80

200

180

160

140

120

100

80

60

40

20

0

Res

ista

nce

(k'

)

Res

ista

nce

(k'

)

Temperature (;)

Temperature (;)

Defrost temperature thermistor (RT62)Evaporation temperature thermistor (RT63)Gas pipe temperature thermistor (RT6A,6B)Outdoor heat exchanger temperature thermistor (RT68)Fin temperature thermistor (RT65)

0 10 20 30 40 50 60 70 80 90 100 110 120

700

600

500

400

300

200

100

0

Res

ista

nce

(k'

)

Temperature (;)

Discharge temperature thermistor (RT61)

F801 FUSE

3.15A/250V

OB319--3.qxp 03.12.3 0:58 PM

69

MXZ-A26WV -MXZ-A32WV -Noise filter P.C.board

E1

E1

R.V. coil 230V AC

230V AC50HzInput

230V AC50Hz Output

Power board

Electroniccontrolboard

230V AC 50Hz Input

CN911 Outdoor FanFan speed “High”230V AC

230V AC 50Hz Output

F912 FUSE3.15A/250VNR63 VARISTOR

CN912 R.V. Coil230V AC

CN911 Outdoor FanFan speed “Low”230V AC

MXZ-A18WV -Noise filter P.C.board

E1

F911 FUSE1A/250V

F912 FUSE3.15A/250VNR63 VARISTOR

F911 FUSE1A/250V

OB319--3.qxp 03.12.3 0:58 PM

70

MXZ-A26WV -MXZ-A32WV -Outdoor Power board

E1

E1

1

3

325-370V DCOutput

(Red)

(White)

Connect to the compressorVoltage among phases: 5V to 180V

Connect tothe earth

CN5Primary current detection(Connect to the noise filter)

CN2Connect to the controller board(+)1-5(–): Signal transmission (To electronic control P.C. board)

5V DC pulse wave(+)2-5(–): Zero cross signal

3-4 : Not used(+)6-5(–): 15V(+)7-5(–): 15V

(+)

(–)

Signalreception(From electroniccontrol P.C.board) 5V DCpulse wave

)

CN3Fin temperature thermistor

OB319--3.qxp 03.12.3 0:58 PM

71

DISASSEMBLY INSTRUCTIONS13

OPERATING PROCEDURE PHOTOS1. Removing the cabinet.

1. Removing the cabinet.(1) Remove the screws of the top panel.(2) Remove the top panel.(3) Remove the screw of the service panel.(4) Remove the service panel.(5) Remove the screws of the front panel.

13-1. MXZ-A18WV -OUTDOOR UNIT

E1

Photo 1

2. Removing the inverter assembly(1) Remove the top panel, service panel and front panel.(2) Remove indoor/outdoor connecting wire and power supply

cable.(3) Remove the compressor connector on the compressor side.(4) Remove the connectors for fan motor, LEV, thermistor and

R.V. coil from the electronic control P.C. board.(5) Remove the screws of the inverter assembly.(6) Remove the inverter assembly.

Photo 3

Photo 4

Photo 2

Compressor connector

Screws of the front panel

Screws of the top panel

Screws of the front panelScrews of the top panel

Screws of the front panel Screws of the

front panel

LEV, R.V.coil and thermistor connectors

Fan motor connector

Screwof theservicepanel

Screw of the relay panel

OB319--3.qxp 03.12.3 0:58 PM

72

OPERATING PROCEDURE PHOTOS3. Removing the Outdoor Electronic control P.C. board.

(1) Remove the top panel, service panel and front panel.(2) Remove the connector coming out of the compressor.(3) Remove the compressor connector, compressor relay

connector on the electronic control P.C. board side, terminal of reactor and terminals of TAB4 and X64 of thenoise filter P.C. board coming out of the electronic controlP.C. board. (Fig. 1)

(4) Remove the screw fixing the cover of the electronic controlP.C. board.

(5) Remove the cover of the electronic control P.C. board.(6) Remove the screw fixing the heat sink.(7) Remove the hooks fixing the electronic control P.C. board.(8) Disconnect all the connectors and the terminal on the

electronic control P.C. board.(9) Remove the electronic control P.C. board.

4. Removing the propeller and fan motor(1) Remove the top panel, service panel and front panel.(2) Remove the fan motor connector (CN911) from the noise

filter P.C. board.Remove the inverter assembly and then lead wires fromcable clamp.

(3) Remove the propeller nut.(4) Remove the propeller.(5) Remove the screws of fan motor.(6) Remove the fan motor

Photo 5

Compressor connector

Relay panel

Fig. 1

Push up the connector by holding the part shown by the arrows.

Photo 6

Photo 7

Screws of the cover

Terminal of reactor

Propeller

Propeller nut X64

TAB4

Screws of fan motor

Screw of heat sink hooks

Cable clamp

OB319--3.qxp 03.12.3 0:58 PM

73

OPERATING PROCEDURE PHOTOS5. Removing the thermistor

Discharge temperature thermistor, defrost, evaporator temperature, high-pressure protect, gas pipe temperature A and gas pipe temperature B

(1) Remove the top panel, service panel, front panel.(2) Remove indoor/outdoor connecting wire and power supply

cable.(3) Remove thermistor connector (CN661, CN662) from the

electronic control P.C. board.(4) Remove the inverter assembly.(5) Remove the thermistor in the upper part of compressor. (6) Remove the back panel.(7) Remove the thermistors for defrost, evaporator temperature,

gas pipe temperature A and gas pipe temperature B.

Fin temperature thermistor(1) Remove the top panel, service panel and front panel.(2) Remove the connector coming out of the compressor.(3) Remove the compressor connector coming out of the

electronic control P.C. board. (Fig. 1)(4) Remove the electronic control P.C. board.(5) Remove the screws fixing the heat sink from the electronic

control P.C. board. (Tightening torque IPM: M4 1.18I0.2[Nm] DS: M3 0.78 I0.2[Nm] AFM: M3.5 0.98 I0.2[Nm])Caution: Be sure to keep silicon oil applied between theheat sink and the electronic control P.C. board away fromdirt etc.

Do not wipe off silicon oil.Otherwise the temperature of the electronic control P.C. board may rise unusually.

Photo 8

Photo 9

Photo 10

Defrost thermistor

Terminal cover


Gas pipe temperature thermistor A, B

Defrost thermistor

High-pressure protect thermistor

Evaporator temperature thermistor

Fin temperature thermistorHeat sink

Sound proof felt

OB319--3.qxp 03.12.3 0:59 PM

74

OPERATING PROCEDURE PHOTOS6. Removing the compressor/4-way valve

(1) Collect refrigerant from refrigerant circuit.Caution: If collecting has not been done enough, refrigeratingmachine oil may spout out or harmful substance may be generated during welding work.

(2) Remove indoor/outdoor connecting wire and power supplycable.

(3) Remove the top panel, service panel, front panel and backpanel.

(4) Remove the inverter assembly.(5) In case of removing 4-way valve, detach welded parts first.(6) Remove the terminal cover then pull out the lead wire from

the terminal of compressor.Remove the soundproof felt.

(7) Detach welded parts of compressor suction and dischargepipes.

(8) Remove the compressor nuts and remove the compressor.

Photo 11

4-way valve welded parts

Welded parts of compressorsuction and discharge pipes

OB319--3.qxp 03.12.3 0:59 PM

75

OPERATING PROCEDURE PHOTOS

1. Removing the compressor(1)Remove the screws of the top panel, and remove it.(2)Remove the screws of the service panel, and remove it.

Recover refrigerant gas.(3)Remove the screws of the front panel, and remove it.(4)Disconnect the compressor lead wire from terminal of

compressor. (U, V, W)(5)Disconnect the outdoor electronic control P.C. board

connectors.CN661, CN662, CN681, CN791, CN792, CN793, CN794 (MXZ-A32WV), CN795, CN931, CN932Disconnect the noise filter P.C. board connector.CN912

(6)Remove the screws of the electrical parts, and remove the electrical parts.

(7)Remove the propeller.(8)Remove the screws of the separator, and remove the

separator.(9)Remove the sound proof felt.(10)Detach the welded parts of the compressor suction and dis-

charge pipes. (Photo 3)(11)Remove the compressor nuts and remove the compressor.

Photo 1

Screws of servicepanel

Photo 2

ElectroniccontrolP.C.board

13-2. MXZ-A26WV - MXZ-A32WV -OUTDOOR UNIT

E1E1

Photo 3

Screws of the front panel

Screws of the top panel

Screws of the electricalparts

LEV coil

Expansionvalve

Suctionpipeweldedpart

Dischargepipeweldedpart

Terminal

OB319--3.qxp 03.12.3 0:59 PM

76


3. Removing the 4-way valve(1)Remove the top panel. (Photo 1)(2)Remove the service panel, rear panel, and pipe cover.

Recover refrigerant gas.(3)Remove the electrical parts. (Photo 2)(4)Detach the welded parts of 4-way valve and pipe.

(Photo 5)

4. Removing the expansion valve(1)Remove the top panel. (Photo 1)(2)Remove the service panel. (Photo 1)

(Gas recovery is not required if the unit is pumped down.)(3)Remove the LEV coil.(4)Detach the welded parts of expansion valves and pipes.

4 way valve

R. V. coil

Welded parts

LEV coils Expansion valves

Photo 5

Photo 6

2. Removing the fan motor(1)Remove the top panel, the service panel, and the front panel.

(Photo 1)(2)Disconnect the connector CN911 on the outdoor electronic

control P.C. board.(3)Remove the propeller.(4)Remove the fan motor.

Photo 4

Screws of the outdoor fan motor

Propeller

Propeller nutSeparator

Compressor nuts

Sound proof felt

OB319--3.qxp 03.12.3 0:59 PM

77


5. Removing the reactor(1)Remove the top panel. (Photo 1)(2)Disconnect the reactor lead wire.(3)Remove the screws of the reactor, and remove the reactor.

Photo 7

Screws of the reactor

OB319--3.qxp 03.12.3 0:59 PM

PARTS LIST

78

14

MXZ-A18WV -14-1. OUTDOOR UNIT FUNCTIONAL PARTS AND STRUCTURAL PARTS

E1

Symbolin WiringDiagram

Q'ty/unit

MXZ-A18WV- RemarksParts No. Parts NameE1

E02 819 521E02 737 232E02 819 009E02 214 501E02 735 301E02 065 506E02 735 900E02 737 290E02 735 661E02 735 662E02 736 493E02 735 493E02 735 640E02 735 937E02 735 961E02 735 490E02 737 245E02 737 233E02 817 009E02 636 515E02 735 630E02 819 297E02 735 933E02 069 936E02 735 936

12345678910111213141516171819202122232425

FAN GUARDCABINETHANDLEPROPELLEROUTDOOR FAN MOTORCOMPRESSOR RUBBER SETCOMPRESSORBASESTOP VALVE (GAS)STOP VALVE (LIQUID)LEV COILLEV COILEXPANSION VALVECAPILLARY TUBE4-WAY VALVER.V. COILSERVICE PANELBACK PANEL (OUT)HANDLEMOTOR SUPPORTOUTDOOR HEAT EXCHANGERTOP PANELMUFFLERCAPILLARY TUBECAPILLARY TUBE

RA6V49-3RUBBERS/SETSNV-092FJYH

[1.8O[0.6O750

[3.0O[2.0O400[3.0O[1.8O600

No.

1111131122112111111111222

MF

MC

BA

LEV A,B

21S4

Part numbers that are circled are not shown in the illustration.

6 7 8

9

22

1 2 3 4 5

10

13

141516

17

18

20 19

21

1211

OB319--3.qxp 03.12.3 0:59 PM

79

MXZ-A18WV -14-2. OUTDOOR UNIT

ELECTRICAL PARTS

E1


Q'ty/unit

MXZ-A18WV- RemarksParts No. Parts NameE1

E02 735 337E02 735 444E02 735 374E02 573 375E02 735 241E02 735 382E02 735 306E02 735 308E02 735 450E02 735 309E02 735 385E02 737 382

123456789101112

REACTORNOISE FILTER P.C. BOARDTERMINAL BLOCKTERMINAL BLOCKFUSE HOLDERFUSEGAS PIPE TEMPERATURE THERMISTOR SETTHERMISTOR SETELECTRONIC CONTROL P.C. BOARDFIN TEMPERATURE THERMISTORFUSE&VARISTORFUSE

No.

L

TB2TB1

F61RT6A,RT6B

RT61,RT62,RT63,RT68

RT65F912,NR63F801,F911

111111111111

20A 250VAC

3.15A 250V1A 250V

DISCHARGE,DEFROSTEVAPORATOR,HIGH-PRESSURE PROTECT

2

7

4

9

1

3 5 6

8


14-3. ACCESSORY

14-2. OUTDOOR UNIT ELECTRICAL PARTS

13 14

E02 817 704E02 444 705

1314

DRAIN SOCKETDRAIN CAP

12 2PCS/SET

14-3. ACCESSORY

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80

MXZ-A26WV -MXZ-A32WV -14-4. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS

E1

E1

3

2

1

4

13

16

22

232425

56 12

117 89 10

17

15

14

1819

20

21

2

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81


Q'ty/unit

MXZ-A26WV- RemarksParts No. Parts NameE1 MXZ-A32WV- E1

M21 TK0 232M21 TK0 027T7W E02 691M21 TK0 245T92 500 801T2W TK0 505M21 TK5 646T2W TK0 654M21 TK0 654M21 TK5 646T2W TK0 653M21 TK0 653M21 TK5 646T2W TK0 652M21 TK0 652R01 E39 401T2W TK0 651M21 TK0 651M21 TK0 290M21 42E 644T2W TK0 247M21 TK5 667M21 TK0 667M21 TK0 248T2W TK0 959M21 20A 961M21 NT1 646R01 E34 401T2W TK0 651M21 TK0 297T2W E40 523M21 TK0 630M21 TK0 249M21 SJ4 937M21 TK0 936T2W E59 936T2W E70 936

123456

7

8

9

10

11121314151617181920212223242526272829

FRONT PANLEHANDLE ASSEMBLYGRILLESERVICE PANELCOMPRESSORCOMPRESSOR RUBBER SETEXPANSION VALVELEV COILEXPANSION VALVEEXPANSION VALVELEV COILEXPANSION VALVEEXPANSION VALVELEV COILEXPANSION VALVEEXPANSION VALVELEV COILEXPANSION VALVEBASE ASSEMBLYUNIONPIPE COVERBALL VALVE 3/8BALL VALVE 5/8REAR PANELPOWER RECEIVER4-WAY VALVEHIGH PRESSURE SWICHEXPANSION VALVELEV COILTOP PANELREAR GUARDHEAT EXCHANGERSIDE PANELCAPILLARY TUBECAPILLARY TUBE SETCAPILLARY TUBECAPILLARY TUBE

No.

MC

LEV D

LEV C

LEV B

LEV A

HPSLEV ELEV E

1211131111111111111111111111111112411

121113

1111111111111111111111112311

TNB220FMCH3RUBBERS SETD roomD roomD roomC roomC roomC roomB roomB roomB roomA roomA roomA room

1/2,3/8,1/4 SET

4.8MPa(48.9kg/cm2)

[4.0O[2.4O400[4.0O[2.8O90[2.5O[0.6O1000[2.0O[0.6O750


14-4. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS

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Q'ty/unit


M21 TK0 501R01 E28 221T2W TK0 440M21 GJ8 308T2W TK1 451T2W TK0 451R01 E06 259M21 TK0 424T2W E58 376T2W E65 375T2W E88 307T2W E70 307T2W TK0 398M21 TK0 308T2W E08 381T2W E66 382T2W E89 313

1234

5

6789

10

1112131415

PROPELLEROUTDOOR FAN MOTORPOWER BOARDFIN TEMPERATURE THERMISTORELECTRONIC CONTROL P.C. BOARDELECTRONIC CONTROL P.C. BOARDREACTORNOISE FILTER P.C. BOARDTERMINAL BLOCKTERMINAL BLOCKGAS PIPE TEMPERATURE THERMISTORGAS PIPE TEMPERATURE THERMISTORR.V. COILTHERMISTOR SETFUSEFUSEFUSE&VARISTOR SET

No.

MF

RT65

L

TB2~5TB1

RT6A,B,CRT6A,B,C,D

21S4RT61,62,63,68

F801F911

F912,NR63

11111

11311

11111

1111

11141

111111

PM8H60-

Indoor unit connecting

Power supply

1A 250V3.15A 250V

3.15A 250V

DISCHARGE, DEFROSTEVAPORATION, OUTDOOR HEAT EXCHANGER

220+ 400V

MXZ-A26WV -MXZ-A32WV -14-5. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS

E1

E1

3

5

6

7

12

11

10

9

84

1 2

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83

OPTIONAL PARTS15

15-1. Different-diameter pipe

Unit : mm (inch)

For different-diameterpipes

MXZ-A18WV

MAC-A454JP

Model name Connected pipesdiameter (mm)

LengthA

69

LengthB

9.52 (3/8)

12.7 (1/2)

LengthC

9.52 — 12.7 (3/8) (1/2) BA

C

For different-diameterpipes

MXZ-A26WVMXZ-A32WV

MAC-A454JP

MAC-A455JP

MAC-A456JP

Model name Connected pipesdiameter (mm)

LengthA

69

65

66.5

LengthB

9.52 (3/8)

12.7 (1/2)

12.7 (1/2)

12.7 (1/2)

9.52 (3/8)

15.88(5/8)

LengthC

9.52 — 12.7 (3/8) (1/2)

12.7 — 9.52 (1/2) (3/8)

12.7 — 15.88(1/2) (5/8)

15-2. Outlet guideChanges air discharge direction.

Model name Model codeApplied unit

MAC-855SG 51H-855MXZ-A26WVMXZ-A32WV

610.4534

534

386

416

51.8

150

109.4

29.2

760.

876

0.8

29.2

6.4

6.4

832

386

Punched hole

Punched hole

5 - [6

5 - [6

MAC-855SG

1MXZ-A26WV-MXZ-A32WV-14-6. ACCESSORY

E1

E1


Q'ty/unit


T2W E59 7041 DRAIN SOCKET ASSEMBLY

No.

1 1 DRAIN SOCKET O1DRAIN CAP O2

OB319--3.qxp 03.12.3 0:59 PM

CC Copyright 2003 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistributed in Dec. 2003. No.OB319 7Made in Japan

New publication, effective Dec. 2003Specifications subject to change without notice.

HEAD OFFICE: MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

OB319--3.qxp 03.12.3 0:59 PM

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