ac inverter service manual
TRANSCRIPT
Content
1
MSC-18HRIN1; MSH-18HRIN1 MSE-09HRIN2; MSE-12HRIN2
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Content
2
Content
1. Precaution........................................................................................................................... 1
1.1 Safety Precaution ................................................................................................................................. 1 1.2 Warning................................................................................................................................................. 1
2. Function .............................................................................................................................. 3 3. Dimension ........................................................................................................................... 5
3.1 Indoor unit(Alfa) ............................................................................................................................... 5 3.2 Outdoor unit(Alfa) ............................................................................................................................ 5 3.3 Indoor unit(Corona).......................................................................................................................... 6 3.4 Outdoor unit(Corona) ....................................................................................................................... 6 3.5 Indoor unit(Inverter Eco)....................................................................................................................... 7 3.6 Outdoor unit(Inverter Eco) .................................................................................................................... 7 3.7 Indoor unit(Inverter Star)....................................................................................................................... 8 3.8 Outdoor unit(Inverter Star).................................................................................................................... 9
4. Specification ..................................................................................................................... 10 5. Refrigerant cycle diagram ............................................................................................... 12 6. Operation limits ................................................................................................................ 13
6.1 Cooling operation ............................................................................................................................... 13 6.2 Heating operation ............................................................................................................................... 13
7. Schematic diagram and Wiring diagram ........................................................................ 14 7.1. Schematic diagram............................................................................................................................. 14 7.2. Wiring diagram.................................................................................................................................... 18
8. Installation details ............................................................................................................ 23 8.1 Wrench torque sheet for installation................................................................................................... 23 8.2 Connecting the cables........................................................................................................................ 23 8.3 Pipe length and the elevation ............................................................................................................. 23 8.4 Air purging of the piping and indoor unit ............................................................................................ 24 8.5 Pumping down (Re-installation) ......................................................................................................... 25 8.6 Re-air purging (Re-installation) .......................................................................................................... 26 8.7 Balance refrigerant of the 2-way, 3-way valves.................................................................................. 27 8.8 Evacuation .......................................................................................................................................... 28 8.9 Gas charging ...................................................................................................................................... 29
9. Pressure table................................................................................................................... 30 9.1 MSH-18HRIN1.................................................................................................................................... 30 9.2 MSC-18HRIN1.................................................................................................................................... 30
10. Capacity table ................................................................................................................... 31 10.1 MSH-18HRIN1.................................................................................................................................... 31 10.2 MSC-18HRIN1.................................................................................................................................... 32 10.3 MSG-09HRI ........................................................................................................................................ 33 10.4 MSG-12HRI ........................................................................................................................................ 33 10.5 MSG-21HRI ........................................................................................................................................ 34 10.6 MSG-24HRI ........................................................................................................................................ 34
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Content
3
11. Electronic function........................................................................................................... 35 11.1. Display board...................................................................................................................................... 35 11.2. Protection............................................................................................................................................ 35 11.3. Fan-only mode.................................................................................................................................... 35 11.4. Cooling mode...................................................................................................................................... 35 11.5. Dehumidifying mode........................................................................................................................... 36 11.6. Heating mode ..................................................................................................................................... 36 11.7. Defrosting operation (Available for heating only). .............................................................................. 38 11.8. Outdoor low temperature protection (optional)................................................................................... 38 11.9. Automatic operation mode ................................................................................................................. 38 11.10. Manual switch..................................................................................................................................... 39 11.11. Timer Function.................................................................................................................................... 39 11.12. Sleep mode......................................................................................................................................... 39 11.13. Auto restart function ........................................................................................................................... 39 11.14. Turbo function..................................................................................................................................... 39 11.15. Plasma................................................................................................................................................ 39
12. Model and Parameters ..................................................................................................... 40 13. Troubleshooting ............................................................................................................... 42
13.1 Indoor Unit Error Display .................................................................................................................... 42 13.2 Diagnostic chart.................................................................................................................................. 47 13.3 Resetting phenomenon often occurs during operation ...................................................................... 48 13.4 Operation lamp flashes and Timer lamp off ....................................................................................... 48 13.5 Operation lamp flashes and Timer lamp on ....................................................................................... 48 13.6 Operation lamp off and Timer lamp flashes ....................................................................................... 49 13.7 Operation lamp on and Timer lamp flashes ....................................................................................... 49 13.8 Operation lamp flashes, Timer lamp flashes...................................................................................... 49
14 Characteristic of temperature sensor............................................................................. 50
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
1
1. Precaution 1.1 Safety Precaution
n To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instruction will cause harm or damage. n Before service unit, be sure to read this service manual at first.
1.2 Warning Ø Installation n Do not use a defective or underrated circuit breaker.
Use this appliance on a dedicated circuit. There is risk of fire or electric shock.
n For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized service center. Do not disassemble or repair the product, there is risk of fire or electric shock.
n Always ground the product. There is risk of fire or electric shock.
n Install the panel and the cover of control box securely. There is risk of fire of electric shock.
n Always install a dedicated circuit and breaker. Improper wiring or installation may cause fore or electric shock.
n Use the correctly rated breaker of fuse. There is risk of fire or electric shock.
n Do not modify or extend the power cable. There is risk of fire or electric shock.
n Do not install, remove, or reinstall the unit by yourself (customer). There is risk of fire, electric shock, explosion, or injury.
n Be caution when unpacking and installing the product. Sharp edges could cause injury, be especially careful of the case edges and the fins on the condenser and evaporator.
n For installation, always contact the dealer or an Authorized service center. There is risk of fire, electric shock, explosion, or injury.
n Do not install the product on a defective installation stand. It may cause injury, accident, or damage to the product.
n Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
n Do not let the air conditioner run for a long time when the humidity is very high and a door or a windows is left open. Moisture may condense and wet or damage furniture.
n Take care to ensure that power cable could not be pulled out or damaged during operation. There is risk of fire or electric shock.
n Do not place anything on the power cable.
There is risk of fire or electric shock. n Do not plug or unplug the power supply plug during
operation. There is risk of fire or electric shock.
n Do not touch (operation) the product with wet hands. There is risk of fire or electric shock.
n Do not place a heater or other appliance near the power cable. There is risk of fire and electric shock.
n Do not allow water to run into electric parts. It may cause fire, failure of the product, or electric shock.
n Do not store or use flammable gas or combustible near the product. There is risk of fire or failure of product.
n Do not use the product in a tightly closed space for a long time. Oxygen deficiency could occur.
n When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on. Do not use the telephone or turn switches on or off. There is risk of explosion or fire.
n If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire.
n Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives. There is risk of property damage, failure of product, or electric shock.
n Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure.
n When the product is soaked (flooded or submerged), contact an Authorized service center. There is risk of fire or electric shock.
n Be caution that water could not enter the product. There is risk of fire, electric shock, or product damage.
n Ventilate the product from time to time when operating it together with a stove, etc. There is risk of fire or electric shock.
n Turn the main power off when cleaning or maintaining the product.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
2
There is risk of electric shock. n When the product is not be used for a long time,
disconnect the power supply plug or turn off the breaker. There is risk of product damage or failure, or unintended operation.
n Take care to ensure that nobody could step on or fall onto the outdoor unit. This could result in personal injury and product damage. Ø CAUTION n Always check for gas (refrigerant) leakage after
installation or repair of product. Low refrigerant levels may cause failure of product.
n Install the drain hose to ensure that water is drained away properly. A bad connection may cause water leakage.
n Keep level even when installing the product. To avoid vibration of water leakage.
n Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors.
n Use two or more people to lift and transport the product. Avoid personal injury.
n Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
Ø Operational n Do not expose the skin directly to cool air for long
periods of time. (Do not sit in the draft). This could harm to your health.
n Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a
consumer air conditioner, not a precision refrigerant system. There is risk of damage or loss of property.
n Do not block the inlet or outlet of air flow. It may cause product failure.
n Use a soft cloth to clean. Do not use harsh detergents, solvents, etc. There is risk of fire, electric shock, or damage to the plastic parts of the product.
n Do not touch the metal parts of the product when removing the air filter. They are very sharp. There is risk of personal injury.
n Do not step on pr put anything on the product. (outdoor units) There is risk of personal injury and failure of product.
n Always insert the filter securely. Clean the filter every two weeks or more often if necessary. A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.
n Do not insert hands or other object through air inlet or outlet while the product is operated. There are sharp and moving parts that could cause personal injury.
n Do not drink the water drained from the product. It is not sanitary could cause serious health issues.
n Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.
n Replace the all batteries in the remote control with new ones of the same type. Do not mix old and mew batteries or different types of batteries. There is risk of fire or explosion.
n Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire. They may burn of explode.
n If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote of the batteries have leaked. The chemical in batteries could cause burns or other health hazards.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
3
2. Function
Indoor unit
Operation ON/OFF by remote controller
Room temperature sensor. Pipe temperature sensor.
Sensing by room temperature
Maintain the room temperature in accordance with the setting temperature.
Room temperature control
Prevent the water being freezed on evaporator by sensing the evaporator pipe temperature in cooling mode
Anti-freezing control in cooling
Restarting is for approx. 3 minutes..
Time Delay Safety control
Turbo wind, high, med, low, breeze.
Indoor fan speed control
The unit will decide the louver direction according to operation mode.
Two-direction air vane
The fan is turn to low speed (cooling/heating). The unit will be turn off at the seventh hour.
Sleep mode auto control
The function is usually used in rainy days in springtime or damp areas.
Independent dehumidification
The louver can be set at the desired position or swing up and down automatically
Air flow Direction control
The mode can be change by the room temperature.
Auto mode
DSP High-speed Chip
Flexible wiring connection
Auto defrost
Temp. Compensation
Prevent the cold wind at the beginning of unit start.
Anti-cold function
Self-diag. function
Auto-restart function
When the power supply is interrupted and then restore, the air conditioners automatically restore the previous function setting.
Tele Remote control (Optional)
Driving heating at -15℃
High efficiency (30%)
Work voltage (160v-253v)
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
4
The unit has 3 mins delay between continuously ON/OFF operations.
Outdoor unit
Power relay control
The hydrophilic fin can improve the heating efficiency at operation mode.
Hydrophilic aluminum fin
It is only operated in the heating operation mode except defrosting operation.
Anti-rust cabinet
Valve protection cover
4 way valve control
Made from electrolytic zinc steel sheet and anti-rust coated components.
It protects the valves and prevents water from dripping.
Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly.
Discharge pipe temperature protect
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
5
3. Dimension 3.1 Indoor unit(Alfa)
Outdoor unit(Alfa)
Dimension Mode
W H D
18K 920 293 224
Dimension Mode
W H D L1 L2 L3
18K 845 695 335 560 360 735
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
6
3.2 Indoor unit(Corona)
Outdoor unit(Corona)
Dimension Mode
W H D
18K 920 292 225
Dimension Mode
W H D L1 L2 L3
18K 845 695 335 560 360 735
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
7
3.3 Indoor unit(Inverter Eco)
DimensionMode W H L
7K 750 250 1889K 750 250 18812K 750 250 188
Outdoor unit(Inverter Eco)
Dimension Mode
W H D L1 L2 L3
7K 780 540 250 530 315 590 9K 780 540 250 530 315 590 12K 780 540 250 530 315 590
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
8
3.4 Indoor unit(Inverter Elite)
Outdoor unit(Inverter Elite)
Dimension Mode
W H D
7K 710 250 190
9K 710 250 190
12K 790 265 195
Dimension Mode
W H D L1 L2 L3
7K 780 540 250 530 315 590 9K 780 540 250 530 315 590 12K 780 540 250 530 315 590
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
9
3.5 Indoor unit(Inverter Star)
Outdoor unit(Inverter Star)
Dimension Mode
W H D
9K 750 250 205
12K 815 280 215
21K 1080 330 222
24K 815 280 215
Dimension Mode
W H D L1 L2 L3
9K 780 540 250 530 315 590 12K 780 540 250 530 315 590 21K 845 695 335 560 360 735 24K 845 695 335 560 360 735
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
10
4. Specification
Ac Alfa,Ac Corona, Inverter Elite Model MSH-18HRIN1 MSC-18HRIN1 MSE-09HRIN2 MSE-12HRIN2
Power supply Ph-V-Hz 1, 220-240V~, 50Hz 1, 220-240V~,50Hz 1, 220-240V~, 50Hz 1, 220-240V~, 50Hz
Capacity Btu/h 18000 18000 9000 12000
Input W 1670 1720 1100 1400
Rated current A 9.0 7.5 5.1 6.4 Cooling
EER Btu/w.h 10.8 10.5, 8.2 8.6
Capacity Btu/h 20000 19000 12000 15000
Input W 1830 1790 1400 1700
Rated current A 9.9 7.7 6.3 7.5 Heating
COP W/W 3.2 3.11 8.6 8.8
Max. current A 15.5 18 12 18
Starting current A 9.0 9.0
Model BA160X2CS-20KU BA160X2CS-20KU BG130X1C-20FZ BG130X1C-20FZ
Type Rotary Rotary Rotary Inverter Rotary Inverter
Brand TOSHIBA TOSHIBA TOSHIBA TOSHIBA
Capacity Btu/h 16140 16140 9468 9468
Input W 1630 1630 890 890
Rated current(RLA) A 10.95 10.95 5.7 5.7
Locked rotor Amp(LRA) A 55 55
Thermal protector CS-74 CS-74 CS-74 CS-74
Capacitor uF No No No No
Compressor
Refrigerant oil ml 750 750 370 370
Model RPG28C RPG28C RPG13H RPG13D
Brand Welling Welling Welling Welling
Input W 45 55 39.5 44
Capacitor uF 1.5 1.5 1.2 1.5
Indoor \fan motor
Speed(hi/mi/lo) r/min 1200/1150/1000 1140/1060/980 1250/1100/850 1180/1000/850
Indoor air flow (Hi/Mi/Lo) m3/h 800/700/600 800/700/600 520/460/410 580/500/420
Indoor noise level (Hi/Mi/Lo) dB(A) 44/40/37 44/40/37 40/38/35 40/38/35
Model YDK53-6K YDK53-6C YDK24-6F YDK25-6-3
Brand Welling Welling Welling Welling
Input W 130 125 56 75
Capacitor uF 3.0 3.0 2.5 2.0
Outdoor fan motor
Speed r/min 750 800 800 900
Outdoor air flow m3/h 2500 2500 1600 1700
Outdoor noise level dB(A) 58 58 58 58
Refrigerant type R410A g 1650 1770 840 1200
Liquid side/ Gas side mm Ф6.35/Ф12.7 Ф6.35/Ф12.7 Ф6.35/Ф9.53 Ф6.35/Ф12.7
Max. pipe length m 10 15 10 10 Refrigerant piping
Max. in level m 5 8 5 5
Operation temp ℃ 17-30 17-30 17-30 17-30
Ambient temp ℃ -15-43 -15-43 -15-50 -15-50
Application area m2 28-45 28-45
Note:
The noise date is base on hemi-anechoic chamber, during actual operation; these values are normally somewhat different
as a result of ambient condition.
The above design and specifications are subject to change without prior notice for product improvement.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
11
Model MSG-07HRIN2 MSG-09HRIN2 MSG-12HRIN2
Power source 220-240V~ 50Hz 220-240V~ 50Hz 220-240V~ 50Hz
Capacity BTU/H 7000(2700~9000) 9000(2730~10600) 12000(3070~13300)
Input W 780(305~990) 990(305~1180) 1340(334~1494)
Running current A 4.8(1.35~6.2) 4.5(1.2~6.6) 5.8(1.60~7.60) Cooling
EER BTU/W.H,W/W 9.0, 2.62 9.0, 2.62 9.0, 2.61
Capacity BTU/H 9000(2700~11000) 12000(2730~14000) 15000(3070~17060)
Input W 940(280~1140) 1240(283~1450) 1560(320~1773)
Running current A 4.4(1.35~6.7) 5.5(1.45~9.3) 6.8(1.6~10.6) Heating
COP W/W 2.81 2.82 2.82
Moisture removal L/h 1.0 1.0 1.2
Max. input consumption W 2300 2300 2600
Model BG130X1C-20FZ BG130X1C-20FZ BG130X1C-20FZ
Type Rotary Inverter Rotary Inverter Rotary Inverter
Brand TOSHIBA TOSHIBA TOSHIBA
Refrigerant oil ml 370 370 370
Refrigerant oil type POE POE POE
Compressor
Capacitor uF \ \ \
Refrigerant R407C g 800 800 1200
Input W RPG13H RPG13H RPG13C
Brand Welling Welling Welling
Capacitor uF 1.2uF/≥450VAC 1.2uF/≥450VAC 1.5uF/≥450VAC
Speed level 3 3 3
Indoor fan motor
Hi/Mid/Lo speed ( rpm) 1050/950/750 1100/1000/800 1060/900/800
Air flow(indoor) Hi/Mid/Lo m3/h 500/410/320 520/430/330 560/460/380
Noise level (indoor) Hi/Mid/Lo dB(A) 35/32/26 36/32/26 36/32/26
Input W YDK25-6-3 YDK25-6-3 YDK25-6-3
Capacitor uF 2.5uF/≥450VAC 2.5uF/≥450VAC 2.5uF/≥450VAC Outdoor fan motor
Brand Welling Welling Welling
Noise lever (outdoor) dB(A) 51 51 53
dimension (W*H*D) 750*250*188 750*250*188 815*280*195
Packing (W*H*D) 830*336*280 830*336*280 915*360*275 Indoor unit
Net/Gross weight kg 8.5/11 8.5/11 11/14
dimension (W*H*D) 780*540*250 780*540*250 780*540*250
Packing (W*H*D) 910*575*335 910*575*335 910*575*335 Outdoor unit
Net/Gross weight kg 37/40 37/40 40/43
Liquid side mm φ6.35 φ6.35 φ6.35
Gas side mm φ9.53 φ9.53 φ12.7
Max. refrigerant pipe length 10 10 10 Refrigerant piping
Max. difference in level 5 5 5
Operation temp 17℃~30℃ 17℃~30℃ 17℃~30℃
Ambient temp -15℃~45℃ -15℃~45℃ -15℃~45℃
Application area M2 14-18 18-24 20-30
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
12
5. Refrigerant cycle diagram
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
13
6. Operation limits 6.1 Cooling operation
Outdoor unit air temp.℃ DB
Indoor air temp. ℃ DB Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage.
6.2 Heating operation Indoor air temp. ℃ DB
Outdoor unit air temp.℃ DB Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
14
7. Schematic diagram and Wiring diagram 7.1. Schematic diagram
7.1.1 Display board(MSH-18HRIN1,MSC-18HRIN1)
1 2 3 4 5 6
A
B
C
D
654321
D
C
B
A
Scale Sheet
Size FCSM No. DWG No. Rev
0 of 0
B
LED2
FROM INDOOR PCB
1234567
CN1
+5
LED3LED1
+5
Q19012
TIME YDEF R
AUTO G
R1 102
R11
391
R12
391
R13
391
R14
391
R15
221
104C1
C3
104
Q29013
R5102
R6221
R4 221
R2 102
R3 221
R9
221
R8
102
Q49012
Q39012
R16
391
R17
221
C5
104 10u/16V
E4
REC1
R10151
47u/16V
E2
R7
221
CLKDATA
REMOTE+5V
GND
DIGI
8LED
Dsa1
Dsb2
Q03
Q14
Q25
Q36
GND7 CP 8
MR 9
Q4 10
Q5 11
Q6 12
Q7 13
Vcc 14IC1
74HC164
+5
+5
+5
+5 d dp e
fg
dig.2
dig.1
c
ba
C6
102
DISP1
DISP2
7.1..2 Indoor main PCB(MSH-18HRIN1,MSC-18HRIN1)
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
IC6 PC817
3
4
DZ124V
C13
473
IC10 PC851
N L 12
CN10
12
CN9
X1
2.5MR101M
RST
C26104
+5V
R13
10K
1
23
IC9 7042
RST
LED_C DATA
TXD
CLK
DIGI_C
BUZZ
ZERO
RXD
REMOTE
SDA
SCL
A0 1
A1 2
A2 3
GND 4SDA5 SCL6 WC7 VCC8IC11 24C04
+5VC19 104
R2910K
R2810K
SDASCL
E1147uF/16VR41
8.06K
C24
223
R42
2K
+5V
1
2
CN14
T1_room
T1_roomE12
47uF/16VR368.06K
C17
223
R27 2K
+5V
1
2
CN11
T2_pipeT2_pipe
E10 100uF/16V
T2_pipe
T1_room
SW_KEY
STEP1
STEP2
STEP3
STEP4
FAN_BACK
INDOORFAN
+5V
E7100uF/16V
C10104
Q39013
R37
12K
C22223
D14 1N4007D13 1N4007
R38
12K R3912K
R40 5.1K+5V
ZERO
B
AC23223
E847uF/16V
C251.2(1.5)uF/450V
T1 T2
G
TR1BT131
L1
C2 333/250VAC
R12K
+5VR3
560
E2470uF/25VR411K/2WDZ2
12VD5
IN4007
R511K/2W
L
N
R2 51/1W
INDOORFAN'
1
2
CN9
N
ZR114D681K
C5333/250VAC
1
2
CN2
TRANS_IN
t PTC182RM
1
2
3
4
5
CN1
FAN_IN
IC1 PC817
FUSE1
3.15A/250V
14.5VAC 350mA
C3
104E1
2200uF/25VD4
D3
D2
D1 Vin1
GN
D2
Vout 3IC2 7812 +12V
E3
1000uF/25V
C4
104
IN4007*4
Vin1
GN
D2
Vout 3IC3 7805 +5V
E4
470uF/16V
C11
104
CHUCHEN
SELECT2
TXD
RXD
R26
2K
R255.1K
R24680
R19100K
R20
11K/2W
R21
11K/2W
R2212K
R235.1K
R185.1K
R172K/2W
C15102
C16
471/250V
C14
102D10
D11
E9
100uF/35V
POWER CIRCUIT
COMMUNICATE CIRCUIT
CORTROL CIRCUIT
R32
10K
+5V
+5V
SELECT3
+5V
Q2 9013
SELECT3
R34
5.1K
D15IN4148
C20103
+5V
123
CN13
FAN_BACK
+12V
FAN_BACK
A
B
1
2
CN10
L
IN4007
1
CN8
S
IN4007
J3
SELECT1P50 1
P51 2
P52 3
P53 4
ANI0 5
ANI1 6
ANI2 7ANI3 8
VSS 9
P10 10
P11 11
P30 12
P31 13
P32 14
P33 15
P20 16P2117
P2218
P2319
P2420
VPP21
RESET22
X223
X124
VDD25
P2526
P2627
P0028
P0129
P0230
P0331
P0432
IC8
uPD789189(32P)
R43
1K
IN4749
1
23
4
2
1
1
2
4
3
C8
104
E5
1000uF/25V ISOGND
D9
D8
D7
D6Vin1
GND
2
Vout 3IC7 7812 ISO+12V
E6
470uF/25V
C9
104
IN4007*4
1234
CN5
TRANS_OUT
R31
10K
+5V
SELECT2
J2
R33
10K
+5V
SELECT1
J1
DISPLAY
C18102
+5VREMOTE
R30 100
R14
10K
R15
10K
R16
10K
+5V
1234567
CN7
DIGI_CDATA
CLKLED_C
123
CN4
IN11
IN22
IN33
IN44
IN55
IN66
IN77
VSS8 VDD 9
OUT7 10
OUT6 11
OUT5 12OUT4 13OUT3 14
OUT2 15
OUT1 16IC4
IC/ULN2003C7
104
+12V
12345
CN8STEP1
STEP2
STEP3
STEP4
BUZZ
INDOORFAN
B1R81K
+12V
IC5 PC817R71K
R6
2K
Q19013
R9
5.1K
ISO+12V ISOGND
CHUCHEN
INDOORFAN'
12 CN12
ISO+12V
12 CN6
SW1 C21104
R3510K
+5V
SW_KEY
1
2
4
1
14.5VAC 200mA C1
472
1P-1
GND
R11100K
C12104
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
15
7.1.3 Outdoor main PCB(MSH-18HRIN1,MSC-18HRIN1)
1 2 3 4 5 6
A
B
C
D
654321
D
C
B
A
123456789
1011121314151617
27 28 29 30 3231
33
3534
36373839404142
4445464748495051
52535455565758596064 63 62 61
43TMS320F242 (64QFP)
IOPC
7IO
PC6
IOPC0
CAP3/IOA5CAP2/QEP1/IOPA4CAP1/QEP0/IOPA3
VDDVSS
VDDVSS
VSSAVDDAADCIN07VREFHIVREFLOADCIN06ADCIN05
ADCIN04
AD
CIN
03A
DC
IN02
AD
CIN
01A
DC
IN00
/RES
ETTC
KTD
ITD
OTM
S/T
RSTVss
VDD
IOPC5IOPC4IOPC3IOPC2SCIRX/IOPA1SCITX/IOPA0
XTAL2XTAL1VDDVSS
VSSVD
D0
PWM
1/PA
6PW
M2/
PA7
PWM
3/PB
0
PWM
4/PB
1PW
M5/
PB2
PTM
PD0
Vcc
p
TP2
TP1
Vdd Vss
C16C15
XTAL1
12
CN1 R7
R8C7
+5V
R18 L4
C17
+5V
J3(Comm Select)
FAN
TXDRXD
POWER
4-WAY
1 23 45 67 89 1011 1213 1415 16
IC2
+12V
D5
R11
R16
1819
20 21 22 23 24 25 26
Compress Top
R1
R2
R3
R4
R6
R5+5V
+5V
+5V
D2
+5V
C8R12
R14
R15R
13
C9
EVPOUT-TEMP
12
CN2
12
Outdoor Entironment Sensor
Outdoor Pipe Sensor
+5V
+5V
C6R10
R9
+5V
IPM
C1R31
R12
D3 R21
R22 C10C11CT1
4148
R24
EMU1EMU0
VSSVDD
NC
IOPC1
12345678910
CZ2+5
+12
Pro
Pro
+5V
C22 C20
R23123
IC1
C12
+5
C131
23
45
67
89
1011
1213
14
CN10
R36
R25
R35
+5
+5
+5
C14
+5V
R32
R30
LED
LED
R29
C23
C25C4
LED
Current Detect
+5
12CN4 C19
C21
R34 R33
W-W+V-V+U-U+
123456789
1011
CN1
CON11
AC-INAC-INFAN'
4-WAY'GNDTXDRXD+5V+12VPOWER1
AC-IN
FAN'4-WAY'
link to power circuit
7.1.4 Outdoor power PCB(MSH-18HRIN1,MSC-18HRIN1)
1 2 3 4
A
B
C
D
4321
D
C
B
A
FS1
20A/250VAC C1
474/250V
ZMR2
14D681
ZMR1
14D681
C5472
C4472
C2
474/250V
tPTC1
RL3
RL2
RL1
C84C7
103
C81 C85C83 C8
103
AS1
T1
H38-20A-6MH
+12V
C152.5U
+12V
560uF/400V *6
POWER1
AC V+
AC V-
DB1
L2 R1812Filter
C6
50uF/450V
C82 C86
123456789
1011
CN1
CON11
POWER1+12V+5VRXDTXDGND4-WAYL.FANH.FANAC-IN
T3
R265.1K
D1IN4007R28
12K
C21
104
IC6 PC817
IC5 PC851
+5V
TXD
R303.5K/7W
C23471/250V
RXD
1
2 3
4
1
23
4
+12V
POWER1
FS2
3.15
A/2
50V
AC
L1
R8025
L3
R18J04D
4-W
AY
FAN
L
N
P-2
P-5
P-6 IPM
BO
AR
D
P-4
P-3
RL3-4
P-1
+5
AC V+
AC V-
DB2
CN4
FAN.H
CN7
CAP
CN5
COM
CN6
4-WAY
S
Power Circuit
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
16
7.1..5 Indoor main PCB(Inverter Eco)
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
17
7.1.6 Outdoor main PCB(Inverter Eco/Elite)
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
18
7.2. Wiring diagram
7.2.1 MSH-18HRDN1
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
19
7.2.2 MSC-18HRIN1
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
20
7.2.3 MSE-09HRIN2, MSE-12HRIN2
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
21
7.2.4 MSG-07HRIN2, MSG-09HRIN2, MSG-12HRIN2 1 Indoor unit 7/9K
2 Indoor unit 12K
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
22
3. Outdoor unit
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
23
8. Installation details 8.1 Wrench torque sheet for installation
Outside diameter Torque mm inch Kg.m φ6.35 1/4 1.8 φ9.52 3/8 4.2 φ12.7 1/2 5.5 φ15.88 5/8 6.6 φ19.05 3/4 6.6
8.2 Connecting the cables
The power cord of connect should be selected according to the following specifications sheet. Grade
Unit 7K 9K 12K 16K 18K
mm2 1.0 1.0 1.5 2.5 2.5
8.3 Pipe length and the elevation Pipe size Capacity
Btu/h GAS LIQUID
Standard length (m)
Max. Elevation B (m)
Max. Elevation B (m)
Additional refrigerant (g/m)
3/8’’ (φ9.52) 1/4’’ (φ6.35) 5 5 10 30 7k~12K
1/2’’ (φ12.7) 1/4’’ (φ6.35) 5 5 10 30
1/2’’ (φ12.7) 1/4’’ (φ6.35) 5 8 15 30
5/8’’ (φ15.88) 1/4’’ (φ6.35) 5 10 20 30 18K~28K
5/8’’ (φ15.88) 3/8’’ (φ9.52) 5 10 20 65
Caution: Capacity is base on standard length and maximum allowance length is base of reliability. Oil trap should be install per 5-7 meters.
In case that more than 5m.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
24
8.4 Air purging of the piping and indoor unit
Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect the compressor, reduce the cooling capacity, and could lead to a malfunction of unit. Be sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents the gas leakage from the refrigeration cycle.
Procedure
1. Recheck the piping connections. 2. Open the valve stem of the 2-way valve
counterclockwise approximately 90’, wait 10 seconds, and then set it to closed position. § Be sure to use a hexagonal wrench to operate
the valve stem 3. Check for gas leakage. § Check the flare connection for gas leakage 4. Purge the air from the system. § Set the 2-way valve to the open position and
remove the cap from the 3-way valve’s service port. § Using the hexagonal wrench to press the
valve core pin, discharge for three seconds and then wait for one minute.
5. Use torque wrench to tighten the service port cap to a torque of 1.8 kg.m. (18n.m)
6. Set the 3-way valve to the opened position.
7. Mounted the valve stem nuts to the 2-way and 3-way valves.
8. Check for gas leakage. § At this time, especially check for gas leakage
from the 2-way and 3-way stem nuts, and from the service port.
Caution: If gas leakage is discovered in step (3) above, take the following measures. If the leaks stop when the piping connections are tightened further, continue working from step (4). If the gas leaks do not stop when the connections are retightened, repair the location of the leak, discharge all of the gas through the service port, and then recharge with the specified amount of gas from a gas cylinder.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
25
8.5 Pumping down (Re-installation)
Procedure
1. Confirm that both the 2-way and 3-way valves are set to the opened position. § Remove the valve stem caps and confirm that the valve stems are in the opened position. § Be sure to use a hexagonal wrench to operate the valve stems. 2. Operate the unit for 10 to 15 minutes. 3. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the
3-way valve. § Connect the charge hose with the push pin to the gas service port. 4. Air purging of the charge hose. § Open the low-pressure valve on the charge set slightly to purge air from the charge hose. 5. Set the 2-way valve to the close position. 6. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1MPa. 7. Immediately set the 3-way valve to the closed position. § Do this quickly so that the gauge ends up indicating 0.3 to 0.5Mpa. 8. Disconnect the charge set, and amount the 2-way and 3-way valve’s stem nuts and service
port caps. § Use a torque wrench to tighten the service port cap to a torque of 1.8 kg.m. § Be sure to check for gas leakage.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
26
8.6 Re-air purging (Re-installation)
Procedure:
1. Confirm that both the 2-way and 3-way valves are set to the closed position. 2. Connect the charge set and a charging cylinder to the service port of the 3-way valve. § Leave the valve on the charging cylinder closed. 3. Air purging. § Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut
on the 2-way valve approximately 45’ for 3 seconds then closing it for 1 minutes; repeat 3 times. § After purging the air, use a torque wrench to tighten the flare nut to on the 2-way valve. 4. Check the gas leakage. § Check the flare connections for gas leakage. 5. Discharge the refrigerant. § Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicate 0.3 to
0.5 Mpa. 6. Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to
the open position. § Be sure to use a hexagonal wrench to operate the valve stems. 7. Mount the valve stems nuts and the service port cap. § Be sure to use a torque wrench to tighten the service port cap to a torque 18N.m. § Be sure to check the gas leakage.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
27
8.7 Balance refrigerant of the 2-way, 3-way valves
Procedure:
1. Confirm that both the 2-way and 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port. § Leave the valve on the charge set closed. § Connect the charge hose with the push pin to the service port. 3. Open the valves (Low side) on the charge set and discharge the refrigerant until the gauge
indicates 0.05 to 0.1 Mpa. § If there is no air in the refrigeration cycle [the pressure when the air conditioner is not running is
higher than 0.1Mpa, discharge the refrigerant until the gauge indicates 0.05 to 0.1 Mpa. If this is the case, it will not be necessary to apply a evacuation. § Discharge the refrigeration gradually; if it is discharged too suddenly, the refrigeration oil sill be
discharged.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
28
8.8 Evacuation
Procedure:
1. Connect the vacuum pump to the charge set’s centre hose. 2. Evacuation for approximately one hour. § Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. 3. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the
gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). 4. Disconnect the charge hose from the vacuum pump. § Vacuum pump oil, if the vacuum pump oil becomes dirty or depleted, replenish as needle.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
29
8.9 Gas charging
Procedure:
1. Connect the charge hose to the charging cylinder. § Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom
of the cylinder. 2. Purge the air from the charge hose. § Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the
air (be careful of the liquid refrigerant). 3. Open the valves (Low side) on the charge set and charge the system with liquid refrigerant. § If the system cannot be charge with the specified amount of refrigerant, if can be charged with a little
at a time (approximately 150g each time0 while operating the air conditioner in the cooling cycle; however, one time is not sufficient, wait approximately 1 minute and then repeat the procedure.(pumping down-pin).
4. Immediately disconnect the charge hose from the 3-way valve’s service port. § Stopping partway will allow the refrigerant to be discharged. § If the system has been charged with liquid refrigerant while operating the air conditioner, turn off the
air conditioner before disconnecting the hose. 5. Mounted the valve stem caps and the service port § Use torque wrench to tighten the service port cap to a torque of 18N.m. § Be sure to check for gas leakage.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
30
§ 9. Pressure table
Note: The pressure data is from 3 way valve, the pressure data are pressure above atmosphere. D: Dry bulb temp. W: Wet bulb temp.
9.1 MSH-18HRIN1
Cooling mode Outdoor temperature (Dry bulb temp)
Indoor Conditions Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D15ºC W Pressure( kg/cm2 ) 6.6 6.8 7.0 7.3 7.6 8.0
24ºC D17ºC W Pressure( kg/cm2 ) 6.8 7.0 7.1 7.7 8.3 8.7
27ºC D19ºC W Pressure( kg/cm2 ) 7.1 7.2 7.3 7.8 8.6 9.3
32ºC D23ºC W Pressure( kg/cm2 ) 7.1 7.4 7.6 8.4 9.4 9.8
Heating mode Outdoor temperature (Dry bulb temp)
Indoor Conditions Pressure 12ºC D 11ºC W
7ºC D 6ºC W
0ºC D -1ºC W
-4ºC D -6ºC W
-7ºC D -9ºC W
-15ºC D -xºC W
15ºC Pressure( kg/cm2 ) 32.5 34.5 34.0 31.0 28.5 27.5
18ºC Pressure( kg/cm2 ) 35.0 34.5 35.5 32.5 29.5 28.0
20ºC Pressure( kg/cm2 ) 36.5 35.5 36.0 33.5 30.0 28.5
22ºC Pressure( kg/cm2 ) 36.5 37.0 36.5 35.0 32.5 29.5
9.2 MSC-18HRIN1
Cooling mode Outdoor temperature (Dry bulb temp)
Indoor Conditions Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D15ºC W Pressure( kg/cm2 ) 6.6 6.8 7.0 7.3 7.6 8.0
24ºC D17ºC W Pressure( kg/cm2 ) 6.8 7.0 7.1 7.7 8.3 8.7
27ºC D19ºC W Pressure( kg/cm2 ) 7.1 7.2 7.3 7.8 8.6 9.3
32ºC D23ºC W Pressure( kg/cm2 ) 7.1 7.4 7.6 8.4 9.4 9.8
Heating mode Outdoor temperature (Dry bulb temp)
Indoor Conditions Pressure 12ºC D 11ºC W
7ºC D 6ºC W
0ºC D -1ºC W
-4ºC D -6ºC W
-7ºC D -9ºC W
-15ºC D -xºC W
15ºC Pressure( kg/cm2 ) 32.5 34.5 34.0 31.0 28.5 27.5
18ºC Pressure( kg/cm2 ) 35.0 34.5 35.5 32.5 29.5 28.0
20ºC Pressure( kg/cm2 ) 36.5 35.5 36.0 33.5 30.0 28.5
22ºC Pressure( kg/cm2 ) 36.5 37.0 36.5 35.0 32.5 29.5
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
31
10. Capacity table
10.1 MSH-18HRIN1 COOLING OUTDOOR TEMPERATURE DRY
Indoor Conditions
21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Total capacity kW 3.513 3.903 4.550 4.849 4.177 3.251 2.333
Sensitive capacity kW 2.635 2.927 3.413 3.738 3.133 2.438 1.749 21ºC D 15ºC W
Input kW. 0.696 1.050 1.607 2.163 1.976 1.810 1.654 Total capacity kW 4.071 4.30 4.938 5.268 4.08 3.625 2.667
Sensitive capacity kW 3.052 3.322 3.703 4.051 3.381 2.719 2.000 24ºC D 17ºC W
Input kW. 0.731 1.183 1.621 2.106 2.012 1.851 1.680 Total capacity kW 4.362 4.921 5.205 5.287 5.024 4.213 3.271
Sensitive capacity kW 3.287 3.690 3.958 4.110 3.768 3.160 2.461 27ºC D 19ºC W
Input kW. 0.721 1.196 1.647 1.700 2.077 1.902 1.700 Total capacity kW 4.931 5.409 6.092 6.319 5.613 4.782 3.500
Sensitive capacity kW 3.698 4.056 4.569 4.839 4.207 3.586 2.625 32ºC D 23ºC W
Input kW. 0.704 1.206 1.755 2.213 2.118 1.962 1.720
HEATING OUTDOOR CONDITIONS
Indoor Conditions
24ºC D 18ºC W
12ºC D 11ºC W
7ºC D 6ºC W
4ºC D 3ºC W
0ºC D -1ºC W
-5ºC D -6ºC W
-7ºC D -8ºC W
-15ºC D -16ºC W
Capacity kW 7.355 7.108 6.663 6.208 5.265 4.621 4.428 3.482 15ºC
Input kW. 1.691 1.883 1.850 2.271 2.406 2.283 2.135 2.026 Capacity kW 7.310 7.021 6.582 6.133 5.255 4.689 4.507 3.638
18ºC Input kW. 1.780 1.947 1.875 2.571 2.730 2.81 2.378 2.180
Capacity kW 7.280 6.897 5.987 5.802 5.394 4.740 4.563 3.744 20ºC
Input kW. 1.860 2.073 1.898 2.650 3.082 2.810 2.550 2.313 Capacity kW 7.241 6.821 5.947 5.750 5.400 4.768 4.592 3.738
22ºC Input kW. 1.993 2.231 2.173 2.700 2.980 2.693 2.487 2.308
Capacity kW 7.103 6.667 5.969 5.883 5.418 4.807 4.671 3.714 27ºC
Input kW. 2.106 2.312 2.422 2.691 2.892 2.611 2.458 2.306
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
32
10.2 MSC-18HRIN1 COOLING OUTDOOR TEMPERATURE DRY
Indoor Conditions
21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Total capacity kW 3.513 3.903 4.550 4.849 4.177 3.251 2.333
Sensitive capacity kW 2.635 2.927 3.413 3.738 3.133 2.438 1.749 21ºC D 15ºC W
Input kW. 0.696 1.050 1.607 2.163 1.976 1.810 1.654 Total capacity kW 4.071 4.30 4.938 5.268 4.08 3.625 2.667
Sensitive capacity kW 3.052 3.322 3.703 4.051 3.381 2.719 2.000 24ºC D 17ºC W
Input kW. 0.731 1.183 1.621 2.106 2.012 1.851 1.680 Total capacity kW 4.362 4.921 5.205 5.287 5.024 4.213 3.271
Sensitive capacity kW 3.287 3.690 3.958 4.110 3.768 3.160 2.461 27ºC D 19ºC W
Input kW. 0.721 1.196 1.647 1.700 2.077 1.902 1.700 Total capacity kW 4.931 5.409 6.092 6.319 5.613 4.782 3.500
Sensitive capacity kW 3.698 4.056 4.569 4.839 4.207 3.586 2.625 32ºC D 23ºC W
Input kW. 0.704 1.206 1.755 2.213 2.118 1.962 1.720
HEATING OUTDOOR CONDITIONS
Indoor Conditions
24ºC D 18ºC W
12ºC D 11ºC W
7ºC D 6ºC W
4ºC D 3ºC W
0ºC D -1ºC W
-5ºC D -6ºC W
-7ºC D -8ºC W
-15ºC D -16ºC W
Capacity kW 7.355 7.108 6.663 6.208 5.265 4.621 4.428 3.482 15ºC
Input kW. 1.691 1.883 1.850 2.271 2.406 2.283 2.135 2.026 Capacity kW 7.310 7.021 6.582 6.133 5.255 4.689 4.507 3.638
18ºC Input kW. 1.780 1.947 1.875 2.571 2.730 2.81 2.378 2.180
Capacity kW 7.280 6.897 5.987 5.802 5.394 4.740 4.563 3.744 20ºC
Input kW. 1.860 2.073 1.898 2.650 3.082 2.810 2.550 2.313 Capacity kW 7.241 6.821 5.947 5.750 5.400 4.768 4.592 3.738
22ºC Input kW. 1.993 2.231 2.173 2.700 2.980 2.693 2.487 2.308
Capacity kW 7.103 6.667 5.969 5.883 5.418 4.807 4.671 3.714 27ºC
Input kW. 2.106 2.312 2.422 2.691 2.892 2.611 2.458 2.306
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
33
10.3 MSG-09HRI
SUMMER Cooling modeIndoor
Conditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D Total capacity kW 2.50 2.35 2.17 2.00 1.87 1.7315ºC W Sensitive capacity kW 1.82 1.75 1.64 1.52 1.43 1.34
Input kW. 0.86 0.90 0.94 1.02 1.13 1.1724ºC D Total capacity kW 2.71 2.58 2.42 2.28 2.13 1.9617ºC W Sensitive capacity kW 1.99 1.93 1.84 1.75 1.64 1.52
Input kW. 0.88 0.93 0.97 1.05 1.16 1.2027ºC D Total capacity kW 2.88 2.75 2.60 2.46 2.29 2.1119ºC W Sensitive capacity kW 2.19 2.12 2.03 1.93 1.80 1.67
Input kW. 0.91 0.96 1.00 1.08 1.20 1.2432ºC D Total capacity kW 3.21 3.08 2.98 2.77 2.53 2.3823ºC W Sensitive capacity kW 2.47 2.40 2.34 2.19 2.02 1.93
Input kW. 0.95 1.00 1.04 1.12 1.25 1.29
OUTDOOR TEMPERATURE DRY
WINTER-7ºC D-8ºC W
Capacity kW 3.46 3.03 2.78 2.44 2.10 1.84Input kW. 1.05 0.96 0.89 0.82 0.72 0.65
Capacity kW 3.39 2.98 2.71 2.35 1.99 1.73Input kW. 1.08 0.97 0.90 0.84 0.74 0.66
Capacity kW 3.36 2.93 2.68 2.29 1.89 1.56Input kW. 1.11 0.98 0.93 0.86 0.76 0.70
Capacity kW 3.33 2.90 2.64 2.26 1.85 1.54Input kW. 1.15 0.99 0.95 0.90 0.81 0.72
OUTDOOR CONDITIONSIndoor
Conditions12ºC D11ºC W
7ºC D6ºC W
4ºC D3ºC W
0ºC D-1ºC W
-4ºC D-6ºC W
15ºC
18ºC
20ºC
22ºC
10.4 MSG-12HRI
SUMMER Cooling modeIndoor
Conditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D Total capacity kW 3.36 3.16 2.93 2.69 2.52 2.3315ºC W Sensitive capacity kW 2.46 2.36 2.21 2.05 1.92 1.80
Input kW. 1.05 1.11 1.16 1.25 1.39 1.4324ºC D Total capacity kW 3.64 3.48 3.25 3.07 2.86 2.6417ºC W Sensitive capacity kW 2.68 2.59 2.47 2.35 2.21 2.05
Input kW. 1.09 1.15 1.19 1.29 1.43 1.4827ºC D Total capacity kW 3.88 3.71 3.50 3.31 3.08 2.8419ºC W Sensitive capacity kW 2.95 2.85 2.73 2.60 2.43 2.25
Input kW. 1.12 1.18 1.23 1.33 1.48 1.5332ºC D Total capacity kW 4.32 4.14 4.01 3.73 3.41 3.2123ºC W Sensitive capacity kW 3.33 3.23 3.15 2.94 2.73 2.60
Input kW. 1.16 1.23 1.28 1.38 1.54 1.59
OUTDOOR TEMPERATURE DRY
WINTER
-7ºC D-8ºC W
Capacity kW 4.50 3.94 3.61 3.17 2.73 2.40Input kW. 1.38 1.26 1.17 1.08 0.94 0.86
Capacity kW 4.41 3.87 3.52 3.06 2.59 2.25Input kW. 1.42 1.28 1.19 1.11 0.97 0.87
Capacity kW 4.37 3.81 3.48 2.98 2.45 2.03Input kW. 1.46 1.29 1.23 1.14 1.00 0.92
Capacity kW 4.33 3.77 3.43 2.94 2.41 2.00Input kW. 1.51 1.30 1.24 1.18 1.06 0.95
15ºC
18ºC
20ºC
22ºC
OUTDOOR CONDITIONSIndoor
Conditions12ºC D11ºC W
7ºC D6ºC W
4ºC D3ºC W
0ºC D-1ºC W
-4ºC D-6ºC W
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
34
10.5 MSG-21HRI SUMMER Cooling mode
IndoorConditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D Total capacity kW 5.92 5.56 5.15 4.74 4.43 4.1115ºC W Sensitive capacity kW 4.32 4.15 3.89 3.60 3.38 3.16
Input kW. 1.97 2.08 2.16 2.33 2.59 2.6824ºC D Total capacity kW 6.41 6.12 5.72 5.41 5.04 4.6517ºC W Sensitive capacity kW 4.71 4.56 4.35 4.14 3.88 3.60
Input kW. 2.03 2.14 2.23 2.41 2.68 2.7727ºC D Total capacity kW 6.83 6.52 6.16 5.82 5.43 5.0019ºC W Sensitive capacity kW 5.19 5.02 4.80 4.57 4.28 3.95
Input kW. 2.09 2.21 2.30 2.48 2.76 2.8532ºC D Total capacity kW 7.60 7.29 7.05 6.56 6.00 5.6523ºC W Sensitive capacity kW 5.85 5.69 5.54 5.18 4.80 4.58
Input kW. 2.18 2.30 2.39 2.58 2.87 2.97
OUTDOOR TEMPERATURE DRY
WINTER
-7ºC D-8ºC W
Capacity kW 8.12 7.12 6.52 5.73 4.93 4.33Input kW. 2.58 2.34 2.18 2.01 1.76 1.59
Capacity kW 7.97 6.99 6.36 5.52 4.68 4.05Input kW. 2.64 2.38 2.21 2.07 1.81 1.62
Capacity kW 7.90 6.88 6.29 5.39 4.43 3.67Input kW. 2.72 2.40 2.28 2.11 1.86 1.70
Capacity kW 7.82 6.80 6.19 5.31 4.35 3.61Input kW. 2.81 2.42 2.31 2.19 1.98 1.77
OUTDOOR CONDITIONSIndoor
Conditions12ºC D11ºC W
7ºC D6ºC W
4ºC D3ºC W
0ºC D-1ºC W
-4ºC D-6ºC W
15ºC
18ºC
20ºC
22ºC
10.6 MSG-24HRI SUMMER Cooling mode
IndoorConditions 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D Total capacity kW 6.76 6.35 5.88 5.41 5.05 4.6915ºC W Sensitive capacity kW 4.93 4.74 4.44 4.11 3.86 3.61
Input kW. 2.35 2.48 2.59 2.79 3.10 3.2124ºC D Total capacity kW 7.31 6.99 6.53 6.17 5.75 5.3017ºC W Sensitive capacity kW 5.38 5.21 4.96 4.72 4.43 4.11
Input kW. 2.43 2.56 2.67 2.88 3.20 3.3127ºC D Total capacity kW 7.79 7.44 7.03 6.64 6.19 5.7119ºC W Sensitive capacity kW 5.92 5.73 5.48 5.22 4.88 4.51
Input kW. 2.50 2.64 2.75 2.97 3.30 3.4132ºC D Total capacity kW 8.68 8.32 8.05 7.49 6.84 6.4523ºC W Sensitive capacity kW 6.68 6.49 6.32 5.91 5.47 5.22
Input kW. 2.60 2.75 2.86 3.09 3.43 3.55
OUTDOOR TEMPERATURE DRY
WINTER
-7ºC D-8ºC W
Capacity kW 9.33 8.19 7.50 6.58 5.67 4.98Input kW. 2.95 2.68 2.50 2.31 2.01 1.83
Capacity kW 9.16 8.04 7.31 6.35 5.38 4.66Input kW. 3.03 2.73 2.53 2.37 2.07 1.85
Capacity kW 9.08 7.91 7.23 6.19 5.09 4.22Input kW. 3.11 2.75 2.61 2.42 2.13 1.95
Capacity kW 9.00 7.82 7.12 6.10 5.01 4.15Input kW. 3.22 2.78 2.65 2.51 2.27 2.03
15ºC
18ºC
20ºC
22ºC
OUTDOOR CONDITIONSIndoor
Conditions12ºC D11ºC W
7ºC D6ºC W
4ºC D3ºC W
0ºC D-1ºC W
-4ºC D-6ºC W
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
35
11. Electronic function
11.1. Display board
1 22 3 4 5 6 11.1.1. AUTO indicator
This indicator illuminates when the air conditioner is in AUTO operation. 11.1.2. TIMER indicator
This indicator illuminates when TIMER is set ON/OFF. 11.1.3. PRE.-DEF. Indicator (For Cooling & Heating models only)
This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode.
11.1.4. TEMPERATURE indicator Usually it displays the temperature settings. When change the setting temperature, this indicator begins to flash, and stops 20 seconds later. It displays the room temperature when the air conditioner is in FAN only operation. When the unit stops operation, it returns to original factory settings. Displays the malfunction code or protection code.
11.1.5. OPERATION indicator This indicator flashes after power is on and illuminates when the unit is in operation.
11.1.6. FREQUENCY indicator This indicator appears only when the compressor is in operation and indicates the current operating
frequency. 11.2. Protection
11.2.1. 3 minutes delay at restart for compressor. 11.2.2. Temperature protection of compressor top, compressor stops when the temp. of top of compressor is more than 115℃, compressor runs when the temp. of top of compressor is less than 100℃.
11.2.3. Voltage protection, unit stop when the voltage is more than 260V and less than 175V. 11.2.4. Inverter module Protection, Inverter module Protection itself has a protection function against current, voltage and temperature.
11.2.5. Sensor protection at open circuit and breaking disconnection 11.2.6. Fan Speed is out of control. When Indoor Fan Speed is too high(higher than 2100RPM)or too low(lower than 300RPM), the unit stops and LED displays failure information and can’t return to normal operation automatically.
11.2.7. Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the unit stops and LED displays failure information and can’t return to normal operation automatically.
11.3. Fan-only mode
Fan speed is high/mid/low/ Auto 11.4. Cooling mode
11.4.1. The 4-way valve is closed at cooling mode. 11.4.2. The action of the compressor and the outdoor fan:
Condition T=Indoor Temp.
Compressor Outdoor fan
T> Ts+1 On On Room temp. up T<Ts+1 Off Off T> Ts On On Room temp. down T<Ts Off Off
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
36
11.4.3 Auto fan at cooling mode: Condition
T=Indoor Temp.-Setting Temp. Indoor fan speed
T<1.5℃ Low 1.5℃<T<4℃ Mid.
Room temp. up
T>4℃ High T> 3℃ High 1℃<T<3℃ Mid.
Room temp. down
T<1℃ Low 11.4.4 Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. )
Evaporator Temp. Compressor
0℃<T< 4℃ Decrease frequency of compressor T< 0℃ Off
11.4.5 Current protection Model Current Compressor
I>18 A Off 14.5A<I<18A Decrease frequency of
compressor
Current up MSH-18HRIN1
I< 12.0A On I>17.5 A Off 14.0A<I<17.5A Decrease frequency of
compressor
Current down MSH-18HRIN1
I< 11.5A On 11.4.6 Rated capacity test
Set mode to cooling mode Set temp. to 17°C Set fan speed to high speed Push turbo button 5 times in 10 seconds. Using special remoter controller After 5 hours, cancel rated capacity test Turbo function Increasing frequency of compressor After operating 30 minutes, return automatically to the mode and temp. previously selected.
11.5. Dehumidifying mode 11.5.1 The 4-way valve is off 11.5.2 the indoor fan is fixed in breeze speed 11.5.3 Compressor run in low frequency 11.5.4 Low room temperature protection: 11.5.5 When room temperature decreases to below 10℃, compressor and outdoor fan will stop (indoor fan is Breeze). Dehumidifying operation will be resumed when room temperature restores to over 12℃.
11.5.6 At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that of cooling mode.
11.6. Heating mode 11.6.1. Generally, the 4-way valve is open at heating mode, but it is closed at defrosting. 4-way valve must delay 2 minutes compared with compressor if the compressor changed into non-heating mode or turned off. 4-way valve doesn't delay in dehumidifying mode.
11.6.2. Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except for the defrosting mode or the end of defrost.
11.6.3. Action of compressor and outdoor fan motor at heating mode: compressor must run for 7 minutes after starting and then judge temperature. Meanwhile other protections are still valid.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
37
Condition Compressor Outdoor fan T> Ts+3 Off Off Room temp. up T<Ts+3 On On T< Ts+2 On On Room temp. down T>Ts+2 Off Off
11.6.4. Indoor Fan actions at heating mode Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind function prevails. Anti-cold wind control function at heating mode
Condition (T= Indoor exchanger temp.) Indoor fan speed T<34℃ Off 34℃<T<37℃ Breeze 37℃<T<44℃ Low speed
Indoor exchanger temp. up
T>44℃ Setting fan speed T> 38℃ Setting fan speed 33℃<T<38℃ Low sped 24℃<T<33℃ Breeze
Indoor exchanger temp. down
T<24℃ Off When the indoor temp. gets to setting temp, indoor changes to breeze speed immediately, after 127 second, indoor fan stop. 11.6.5. Auto wind at heating mode
Condition (T=Indoor Temp.-Setting Temp.) Indoor fan speed
T<1.5℃ High 1.5℃<T<2.5℃ Med.
Room temp. up
T>2.5℃ Low T<1.0℃ High 1.0℃<T<2.0℃ Med.
Room temp. down
T>2.0℃ Low 11.6.6. Indoor evaporator high-temperature protection at heating mode
Condition (T= Indoor exchanger temp.) Compressor
T<48℃ On 53℃<T<63℃ Decrease frequency of compressor T>63℃ Off
11.6.7. The current protection Model Current Compressor
I>19.0 A Off 15.0.A<I<19.0A Decrease frequency of compressor
Current up 18000btu/h
I< 12.5A On I>18.5 A Off 14.5A<I<18.5A Decrease frequency of compressor
Current down 18000btu/h
I< 12.0A On 11.6.8. The temp. compensation Jump setting in indoor PCB
J2 On On Off Off
J3 On Off On Off
ΔT 0℃ -4℃ -2℃ 0℃
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
38
11.7. Defrosting operation (Available for heating only). 11.7.1 Defrosting condition: 11.7.1.1. When outdoor temp. is more than 0℃,
Defrosting starts when meeting one of the following conditions, a. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 40 minutes, and the temperature remains consecutively -4°c for more than 3 minutes, b. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 80 minutes, and the temperature remains consecutively -2°c for more than 3 minutes 11.7.1.2. When outdoor temp. is less than 0℃,
Defrosting starts when meeting one of the following conditions, a. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 40 minutes, and the temperature remains consecutively -6°c for more than 3 minutes, b. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more
than 40 minutes, and the temperature remains consecutively -6°c for more than 3 minutes, c. The temperature of indoor unit pipe decreases 5°c than before
11.7.1.3. The temperature of outdoor heat exchanger remains consecutively lower than 3°c for more than 120 minutes, and the temperature remains consecutively -2°c for more than 3 minutes
11.7.2 Ending condition of defrosting If one of following conditions is satisfied, end the defrost and turn into heating mode: a. The defrost time has reached to 10 minutes. b. When the temperature of outdoor heat exchanger rises up to 8°C and this continues for more than 80 seconds. c. When the temperature of outdoor heat exchanger rises up to 12°C
11.7.3 Defrosting Actions:
11.7.4 Rated capacity test Set mode to cooling mode Set temp. to 30 °C Set fan speed to high speed Push turbo button 5 times in 10 seconds. Using special remoter controller After 5 hours, cancel rated capacity test
11.8. Outdoor low temperature protection (optional) Factory standard unit has not this function. Unit stops when outdoor temp. is low than -15°C and lasting time more than 60 minutes, and unit runs again when outdoor temp. more than -12°C. When indoor PCB J1 jump is on, this function is available. 11.9. Automatic operation mode The air conditioner automatically selects one of the following operation modes: cooling, heating or fan
max. 10 minutes 60s ON 10s 30s Com. OFF ON ON 4 way valve OFF ON ON Outdoor fan OFF ON ON Indoor fan OFF
Breeze 10 seconds, then stop
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
39
only according to the temp. difference between room temp. (TA) and set temp. (TS). TA—TS Operation mode TA—TS>2℃ Cooling -1℃≤TA-TS≤+2℃ Fan-only TA-TS<-1℃ Heating (air-only for cooling only type)
11.10. Manual switch 11.10.1 Mode changes when push this button .
Cooing modeà Auto modeàUnit offà Cooing mode 11.10.2 At Cooing mode, after 30 minutes cooling operation whose fan speed is set as low, the A/C operates with a setting temp. of 24℃.
11.10.3 At auto mode, the A/C operates with a set temp. of 24℃ 11.11. Timer Function
11.11.1 The maximum length of timer is 24 hours and the minimum resolving power is 15 minutes. 11.11.2 Timer on: first turn off the A/C, the A/C will be automatically on at the set time. 11.11.3 Timer off: first turn on the A/C, the A/C will be automatically off at the set time 11.11.4 Timer on/off function( on time is earlier than off time): first turn off the A/C, it will be automatically on at set time, and later be off at the set time, then unit turns on at set time.
11.11.5 Timer off/on function( off time is earlier than on time): first turn on the A/C, it will be automatically off at set time, and later be on at the set time, then unit turns off at set time.
11.12. Sleep mode 11.12.1 It is available at cooling, heating or auto mode. 11.12.2 Cooling:
The set temperature rise 1℃ per hour. Two hours later, the set temperature will maintain as a constant and the fan speed is kept at low speed.
11.12.3 Heating: The set temperature decrease 1℃ per hour. Two hours later, the set temperature will maintain as a constant and the air circulation is kept at low speed (Cold air proof function takes precedence over all).
11.12.4 Auto: The Sleep Mode running function operates in accordance with selected running mode by auto mode.
11.12.5 After 7 hours, unit cancels this modes automatically. 11.13. Auto restart function In case of a sudden power failure, this function automatically sets the unit to previous settings before the power failure when power returns. 11.14. Turbo function The indoor fan will work in super high speed, the frequency of compressor will increase, the max run time is 30 minutes. After 30 minutes, the unit will work in previous setting. 11.15. Plasma Plasma turns on when the indoor fan runs. Plasma turns off automatically when front panel is opened. Plasma is optional function.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
40
12. Model and Parameters
Model MSH-18HRDN1 MSC-18HRDN1 RACFAN 1180 1140
RAHFAN 1180 1140
RATIFC 59 59
RATIFH 57 57
SLEEPTIMC 7 7
FANCSHIGH 1180 1180
FANHSHIGH 1180 1180
FANCHIGH 1180 1140
FANHHIGH 1180 1140
FANMID 1100 1060
FANLOW 980 980
FANSLOW 900 900
F1 42 42
F2 47 47
F3 52 52
F4 55 55
F5 58 58
F6 64 64
F7 70 70
F8 76 76
F9 82 82
F10 88 88
I1COOL 12 12
I2COOL 14.5 14.5
I3COOL 18 18
I1HEAT 12.5 12.5
I2HEAT 15 15
I3HEAT 19 19
TCDI -6 -6
TCDE1 20 20
TCDE2 12 12
TEL2 26 24
TEH2 53 53
ANGLSTART 190 0
ANGLOFF 115 141
ANGLHEATMAX 13 11
ANGLHEAT 20 34
ANGLHEATMIN 48 51
ANGLSMALL 115 77
ANGLCOOLMAX 186 85
ANGLCOOL 175 68
ANGLCOOLMIN 160 56
PDELAYCOUNT 127 127
V1 F6 F6
V2 F3 F3
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
41
Model MSE-09HRDN1 MSE-12HRDN1
flag0 00 00
MacType 05 05
RatiFC 66 82
RatiFH 76 92
SleepTim 7 7
FanCSHigh 1300 1250
FanHSHigh 1300 1250
FanCHigh 1250 1180
FanHHigh 1250 1180
FanMid 1100 1100
FanLow 880 850
FanSlow 800 750
F1 34 33
F2 38 47
F3 44 57
F4 59 62
F5 63 72
F6 66 82
F7 73 88
F8 76 92
F9 95 103
F10 105 107
I1Cool 7.0 8.5
I2Cool 8.0 10.0
I3Cool 10.5 12
I1Heat 8.5 10.5
I2Heat 10.0 12.0
I3Heat 12.0 13.5
TCDI -9 -9
TCDE1 20 20
RACFAN 1250 1180
RAHFAN 1250 1180
TEL1 24 24
TEH2 53 53
ANGLSTART 200 193
ANGLOFF 110 101
ANGLHEATMAX 18 11
ANGLHEAT 27 17
ANGLHEATMIN 53 51
TEL2 33 33
ANGLCOOLMAX 186 180
ANGLCOOL 183 176
ANGLCOOLMIN 160 155
TCDE2 8 8
PDELAYCOUNT 127 127
TEL5 36 36
TEL6 40 40
PARASUM
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
42
13. Troubleshooting 13.1 Indoor Unit Error Display
Display LED STATUS E0 EEPROM error E1 Indoor / outdoor units communication protection E2 Zero-crossing examination error E3 Fan speed beyond control E5 Open or short circuit of outdoor temperature sensor E6 Room temperature or evaporator temperature sensor open or short circuit of P0 Module protection P1 Over voltage or too low voltage protection P2 Compressor top protection against temperature P3 Outdoor low temp. protection
P4 Inverter compressor drive error
Note: E4: Reserved function 13.1.1
Display LED STATUS
E0 EEPROM parameter error
13.1.2 circuit or software error on indoor cortrol board
Display LED STATUS
E1 Indoor / outdoor units communication protection
Replace the control board of indoor
Circuit or software error on indoor control board
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
43
No 13.1.3
Display LED STATUS E2 Zero-crossing examination error
13.1.4
Display LED STATUS E3 Fan speed beyond control
Is power supply right?
Is connector connection good?
Indoor PCB is defective
Yes
Yes
Does the led on outdoor control board bright?
No
YES
Disconnect the power supply, after 1 minutes, connect the power supply , turn on the
unit using remote controller, does the unit work normally ?
Replace the module board.(The
power supply of PCB is supplied
by the module board.)
Replace the outdoor power
supply board.
Yes
Is the voltage on terminal CZ1 and CZ2 of the outdoor main PCB is 5V?
NO
NO
NO
Is the connection on outdoor control board and
between indoor and outdoor unit good? Does the L、
N connect good? Does the S wire connect reliably?
Replace the indoor control board.
YES
Is the voltage between P and
N on inverter module 380V?
Replace the outdoor main
PCB
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
44
Yes 13.1.5
Display LED STATUS E5 Open or short circuit of outdoor temperature sensor
Yes No 13.1.6
Display LED STATUS E6 Room temperature or evaporator temperature sensor open or short circuit
yes No 13.1.7
Display LED STATUS P0 Module protection
Is connector connection good?
Is voltage being applied to the fan motor?
(rang 90v-160v between mid pin and N on CN1
Indoor fan motor is defective
Repair the connector.
Indoor PCB is defective
No
Yes No
Is connection to connector good?
Replace the sensor Repair connector
Is connection to connector good?
Replace the sensor
Repair connector
If display E5 all the same, replace indoor main PCB.
If display E6 all the same, replace outdoor main PCB.
Replace indoor main PCB. Replace indoor fan motor.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
45
No Yes Yes No Yes Yes No No No Yes 13.1.8
Display LED STATUS P1 Over voltage or too low voltage protection
13.1.9
Display LED STATUS P2 Compressor top protection against temperature
Off: 115゜C; On: 100゜C
Is connection to connector good?
Is the wires to compressor right?
Check the inverter module, If some component
cracked or damaged?
Is it breakdown between P-N,P-U,P-V;N-W,N-U,N-V
At inverter module
Check compressor Inverter module is defective
Repair connector
Is the power supply right?
Check the outdoor power board
Replace outdoor main PCB.
Yes
Check the voltage between P and N on inverter
module. Is it about 380V?
Test the outdoor power supply board again.
Inverter module damaged, replace it.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
46
No 13.1.10
Display LED STATUS P3 Outdoor low temp. protection
This is optional, factory standard unit has not this function.
Unit stops when outdoor temp. is low than -15°C and lasting time more than 60 minutes, and unit runs again when outdoor temp. more than -12°C.
Does compressor operate?
Is refrigerant circulation volume normal?
Gas charging
Is abnormality the same after gas charging
Check refrigerant system (such as clogging of
capillary, etc)
Is protector normal?
Check the outdoor main PCB
Replace protector
No
Yes
Yes
No
No
Is the outdoor temp. low than -15°C?
Is the outdoor temp sensor right according to the table in clause 12
Replace the outdoor main board
No
Yes
Is the connection good?
Yes Connect and test again.
No
Replace the outdoor main PCB.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
47
13.2 Diagnostic chart
After energizing, no indicator is lighted and the air conditioner can’t be operated.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn
Service manual
48
13.3 Resetting phenomenon often occurs during operation
(That is automatically entering to the status when power is on.) The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the following procedure:
Resetting phenomenon often occurs during operation.
After changing indoor PCB, check if the failure realease.
Yes
After changing indoor fan motor, check if the failure realease.
Yes
YES
Yes
Power supply circuit has problems.
Indoor PCB is defective.
13.4 Operation lamp flashes and Timer lamp off
13.5 Operation lamp flashes and Timer lamp on
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
49
13.6 Operation lamp off and Timer lamp flashes
13.7 Operation lamp on and Timer lamp flashes
EEROM error, indoor PCB is defective. 13.8 Operation lamp flashes, Timer lamp flashes
This is alarm signal when the main chip can’t detect over-zero signal. When such failure occurs, the main control board must have fault.
PDF 文件使用 "pdfFactory Pro" 试用版本创建 炣 www.fineprint.cn
Service manual
50
14 Characteristic of temperature sensor
Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ -10 62.2756 17 14.6181 44 4.3874 -9 58.7079 18 13.918 45 4.2126 -8 56.3694 19 13.2631 46 4.0459 -7 52.2438 20 12.6431 47 3.8867 -6 49.3161 21 12.0561 48 3.7348 -5 46.5725 22 11.5 49 3.5896 -4 44 23 10.9731 50 3.451 -3 41.5878 24 10.4736 51 3.3185 -2 39.8239 25 10 52 3.1918 -1 37.1988 26 9.5507 53 3.0707 0 35.2024 27 9.1245 54 2.959 1 33.3269 28 8.7198 55 2.8442 2 31.5635 29 8.3357 56 2.7382 3 29.9058 30 7.9708 57 2.6368 4 28.3459 31 7.6241 58 2.5397 5 26.8778 32 7.2946 59 2.4468 6 25.4954 33 6.9814 60 2.3577 7 24.1932 34 6.6835 61 2.2725 8 22.5662 35 6.4002 62 2.1907 9 21.8094 36 6.1306 63 2.1124 10 20.7184 37 5.8736 64 2.0373 11 19.6891 38 5.6296 65 1.9653 12 18.7177 39 5.3969 66 1.8963 13 17.8005 40 5.1752 67 1.830 14 16.9341 41 4.9639 68 1.7665 15 16.1156 42 4.7625 69 1.7055 16 15.3418 43 4.5705 70 1.6469
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn