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Service Diagnosis

10.4.1

Thermistor or Related Abnormality

Indoor Display

E1: Room temperature sensor failure

E2: Heat-exchange sensor failure

Outdoor display

LED1 flash 10 times Defrost temperature sensor failure

LED1 flash 11 times Suction temperature sensor failure

LED1 flash 12 times Ambient temperature sensor failure

LED1 flash 13 times Discharge temperature sensor failure

The temperatures detected by the thermistors are used to determine thermistor errors

When the thermistor input is more than 4.92V or less than 0.08V during compressor

operation.

Note: The values vary slightly in some models

Faulty connector connection

Faulty thermistor

Faulty PCB

* Caution: Be sure to turn off power switch before connect or disconnect connector,
or else parts damage may be occurred.

Thermistor resistance inspection method:

Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester. The

relationship between normal temperature and resistance is shown in the value of indoor thermistor.

Malfunction

Decision

Conditions

Method of

Malfunction

Detection

Is it normal?

Yes

Is it normal?

Yes

Check the connector connection.

Replace the indoor PCB

Replace the thermistor

Thermistor resistance check

Correct the connection

Supposed

Causes

Trouble

shooting

Содержание 1U50S2SJ2FA-1

Страница 1: ...empting to service a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or Repair the product or products dealt...

Страница 2: ...list 8 4 Piping diagrams 9 5 Operation range 10 6 Printed circuit board connector wiring diagram 11 7 Functions and control 8 Dimensional drawings 9 Center of gravity 10 Service diagnosis 11 Performa...

Страница 3: ...el name explanation 1 1 U 5 0 S 2 S J F 2 The maximum combination number Type of outdoor unit U normal type Nominal cooling capacity 18000BTU h Supermatch second generation normal efficiency Outdoor c...

Страница 4: ...before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to condu...

Страница 5: ...welder in an enclosed room can cause oxygen deficiency 1 2 2 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and appropr...

Страница 6: ...other than the specified refrigerant R 410A R22 in the refrigerant system If air enters the cooling system an excessively high pressure results causing equipment damage and injury If the refrigerant...

Страница 7: ...perly and if the connections at the soldered or crimped terminals are secure Improper installation and connections can cause excessive heat generation fire or an electrical shock If the installation p...

Страница 8: ...ks Caution Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure...

Страница 9: ...7 e r u s s e e p d n u o S 63 B d r e w o p d n u o S ELECTRICAL SPECIFICATIONS g n i t a e h g n i l o o c 5 0 7 0 A t n e r r u c g n i n n u r l a n i m o N Maximum running current A 9 8 10 2 0 1...

Страница 10: ...itional Charge of Refrigerant g m 20 Intemational Protection degree IP X4 Note the data are based on the conditions shown in the table below cooling heating Piping length Indoor 27 DB 19 WB Outdoor 35...

Страница 11: ...Piping diagrams Domestic air conditioner 4 Piping diagrams 9 EEV EEV...

Страница 12: ...Operation range 5 Operation range 60 43 40 20 0 20 20 40 21 35 15 20 25 27 10 Domestic air conditioner...

Страница 13: ...board and the module board 9 CN25 CN28 Connector to N and P of the module board 10 CN36 Connector for communicate between indoor and outdoor unit 11 CN15 Connector for electric expansion valves PCB 2...

Страница 14: ...Printed circuit board connector wiring diagram 12 Domestic air conditioner PCB 1 CN6 CN7 CN1 CN2 CN25 CN28 CN23 CN24 CN9 CN10 CN36 CN3 CN11 CN15 CN47 CN17 CN22...

Страница 15: ...Printed circuit board connector wiring diagram 13 Domestic air conditioner PCB 2 CN4 CN3 CN10 CN6 CN5 CN8 CN11 CN9 CN7 CN1 CN2...

Страница 16: ...CAPACITOR EVEN AFTER PLUG OFF DANGER OF ELECTRIC SHOCK CN7 CN6 AC N OUT AC L OUT BR OR B BL OR W BL OR W BR OR B Note The dotted parts are optional The 1 and the 2 cannot exist at the time but must ke...

Страница 17: ...every determined frequency for protection should be prior to the calculated frequency 7 1 1 3 The speeds of increasing or decreasing the frequency of the compressor The speed of increasing or decreasi...

Страница 18: ...the complete appliance which are affected by the environment but also the maximum ability limitation of the system When the starting ability is not the maximum its maximum frequency limitation is cal...

Страница 19: ...pressor is controled according to the ambient temperature Tao Tao 22 22 Tao 28 Tao 29 Refrigeration dehumidification 18K 24K 2nd level 2nd level 3rd level 4th level 5th level 6th level Tao Tao 10 10 T...

Страница 20: ...no such limitation Sensor detection methods 100 times one cycle of procedure run is one time and about 5ms detection method for each time continuously sampling for 8 times then order them and take the...

Страница 21: ...sor if the AC current is greater than 14 5A 15A 18K 24K the frequency of the compressor decreases at the speed of 1HZ second During the starting process of the compressor if the AC current is greater...

Страница 22: ...gerating heating prevent freezing Tpg_indoor is the minimum value of the effective indoor unit start it and it is in accord with the running state 11 ice_temp_3 5 ice_temp_3 3 9 Increasing slowly 8 ic...

Страница 23: ...25 50 3700Kf3 Temp Max K Normal K Min K Tolerance 30 165 2170 147 9497 132 3678 1 94 1 75 29 155 5754 139 5600 125 0806 1 93 1 74 28 146 5609 131 7022 118 2434 1 91 1 73 27 138 1285 124 3392 111 8256...

Страница 24: ...15 0 98 0 96 16 15 2385 14 6268 14 0271 0 96 0 94 17 14 5748 14 0079 13 4510 0 93 0 92 18 13 9436 13 4185 12 9017 0 91 0 90 19 13 3431 12 8572 12 3778 0 88 0 87 20 12 7718 12 3223 11 8780 0 86 0 85 21...

Страница 25: ...1 93 59 2 9909 2 7948 2 6092 2 08 1 97 60 2 8936 2 7012 2 5193 2 13 2 01 61 2 8000 2 6112 2 4328 2 17 2 05 62 2 7099 2 5246 2 3498 2 22 2 09 63 2 6232 2 4413 2 2700 2 26 2 13 64 2 5396 2 3611 2 1932...

Страница 26: ...4 101 0 8507 0 7646 0 6867 4 18 3 78 102 0 8281 0 7436 0 6672 4 23 3 83 103 0 8061 0 7233 0 6484 4 29 3 88 104 0 7848 0 7036 0 6303 4 34 3 92 105 0 7641 0 6845 0 6127 4 40 3 97 106 0 7441 0 6661 0 595...

Страница 27: ...548 3573 4260 3049 5312 2 70 2 32 10 3933 3289 3365 7336 2877 4527 2 69 2 31 9 3699 5139 3171 3148 2716 0828 2 67 2 30 8 3480 9407 2989 2460 2564 6945 2 66 2 29 7 3276 5302 2818 6731 2422 6139 2 64 2...

Страница 28: ...1295 334 5542 1 95 1 80 33 381 5350 349 4341 319 7460 1 93 1 78 34 363 7176 333 5801 305 6645 1 90 1 76 35 346 8176 318 5216 292 2709 1 88 1 75 36 330 7839 304 2151 279 5286 1 86 1 73 37 315 5682 290...

Страница 29: ...96 75 62 3423 60 1906 58 0609 0 95 0 94 76 59 9821 57 9770 55 9885 0 92 0 92 77 57 7223 55 8552 53 9998 0 90 0 89 78 55 5583 53 8210 52 0912 0 87 0 87 79 53 4856 51 8706 50 2591 0 85 0 84 80 51 5000...

Страница 30: ...23 2 12 117 15 4489 14 4506 13 5047 2 27 2 16 118 14 9968 14 0149 13 0855 2 32 2 19 119 14 5599 13 5942 12 6811 2 36 2 23 120 14 1376 13 1879 12 2909 2 41 2 27 121 13 7294 12 7955 11 9144 2 45 2 31 1...

Страница 31: ...Dimensional drawings 8 Dimensional drawings 9 Center of gravity 29 Domestic air conditioner...

Страница 32: ...the indoor PCB is broken Operation sometimes stops Check the power supply A power failure of 2 to 10 cycles can stop air conditioner operation Equipment operates but does not cool or does not heat on...

Страница 33: ...21 Indoor unit overload in heating mode pipe temperature sensor Indoor PCB Indoor motor E14 Indoor fan motor malfunction Indoor motor Indoor PCB Outdoor Malfunction F1 2 IPM protection Power module Re...

Страница 34: ...frigerant compressor F23 25 Compressor U phase overcurrent Compressor V phase overcurrent Compressor W phase overcurrent Power module Refrigerant compressor F24 27 CT detection current abnormal protec...

Страница 35: ...ssor operation Note The values vary slightly in some models Faulty connector connection Faulty thermistor Faulty PCB Caution Be sure to turn off power switch before connect or disconnect connector or...

Страница 36: ...h 1 times The Data detected by the EEPROM are used to determine MCU When the data of EEPROM is error or the EEPROM is damaged Faulty EEPROM data Faulty EEPROM Faulty PCB Caution Be sure to turn off po...

Страница 37: ...es Detection error due to faulty indoor unit PCB Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Trouble shooting Method of Malfunc...

Страница 38: ...check if the motor can run YES Measure whether there is a voltage pulse 0 15VDC between 4 and 5 of the CN9 terminal on the indoor PCB The indoor motor is damaged and need replace NO Is it ok YES The...

Страница 39: ...ore connect or disconnect connector or else parts damage may be occurred Method of Detection Trouble shooting Supposed Causes Malfunction Decision Conditions Check whether terminal on the outdoor main...

Страница 40: ...ck line and red line between black line and white line of the fan terminal of outdoor PCB are greater than 10M YES The module PCB is damaged replace it with a new one The motor of the outdoor unit is...

Страница 41: ...ecision Conditions Method of Malfunction Detection Trouble shooting Electrify the machine again and turn it on with the remote control If malfunctions are reported before or upon the compressor being...

Страница 42: ...s damage may be occurred Malfunction Decision Conditions Method of Malfunction Detection Trouble shooting Supposed Causes The system may have been over or under charged with gas which can be judged th...

Страница 43: ...hod of Malfunction Detection Trouble shooting Supposed Causes Malfunction Decision Conditions Are they good Pull out and reinsert the terminals Replace connected wire Replace the outdoor PCB with a ne...

Страница 44: ...h before connect or disconnect connector or else parts damage may be occurred Supposed Causes Malfunction Decision Conditions Method of Malfunction Detection Trouble shooting Is it ok Test the outdoor...

Страница 45: ...sion Conditions Method of Malfunction Detection The temperature exceeds 110 shortly after the machine starts up The cryogen may have been leaked during installation or there may be leakage in the pipi...

Страница 46: ...is broken Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Supposed Causes Malfunction Decision Conditions Method of Malfunction De...

Страница 47: ...hen only indoor charged The indoor PCB is damaged replace it with a new one Test the outdoor power is supply 230VAC with a universal meter when indoor and outdoor are charged Check the cable between o...

Страница 48: ...an motor terminal resistance between pin 1 310V and pin 4 0V or pin 5 15V and pin 4 0V of CN21 are close to 0m with a universal meter after switch off the power NO Remove the connection cable between...

Страница 49: ...ower switch before connect or disconnect connector or else parts damage may be occurred The outdoor PCB needs dehumidification Is it normal after restart the AC If starting up normally but malfunction...

Страница 50: ...hite line is not close to18V DC when only indoor charged YES The indoor PCB is damaged replace it with a new one NO Test the outdoor power is supply 230VAC with a universal meter when indoor and outdo...

Страница 51: ...tart the unit the LED 2 becomes light or flash Fan motor is damaged Replace it with a new one YES NO Test the fan motor terminal resistance between pin 1 310V and pin 4 0V or pin5 15V and pin4 0V of C...

Страница 52: ...onnector or parts damage may be occurred Conditions Decision Malfunction Method of Malfunction Detection Trouble shooting Malfunction unsolved Maybe there is some disturbance Malfunctions exist also t...

Страница 53: ...e to turn off power switch before connect or disconnect connector or parts damage may be occurred Trouble shooting Supposed Causes Malfunction Decision Conditions Method of Malfunction Detection The m...

Страница 54: ...Performance and curves diagrams 11 Performence and curves diagrams 11 1 Cooling capacity temperature curves 52 Domestic air conditioner...

Страница 55: ...Performance and curves diagrams 11 2 Cooling power consumption value temperature curves Domestic air conditioner 53...

Страница 56: ...Performance and curves diagrams 11 3 Cooling discharge pressure curves Domestic air conditioner 54...

Страница 57: ...Performance and curves diagrams 11 4 Cooling suction pressure curves 55 Domestic air conditioner...

Страница 58: ...Performance and curves diagrams 11 5 Heating capacity temperature curves 56 Domestic air conditioner...

Страница 59: ...Performance and curves diagrams 11 6 Heating power consumption value temperature curves 57 Domestic air conditioner...

Страница 60: ...Performance and curves diagrams 11 7 Heating discharge pressure curves 58 Domestic air conditioner...

Страница 61: ...Performance and curves diagrams 11 8 Heating suction pressure curves 59 Domestic air conditioner...

Страница 62: ...60 Do C omestic air ircuit Diagra conditioner ams r 12 Circuit diagrams 12 1 Outdoor unit control board circuit diagrams...

Страница 63: ...61 Do C omestic air ircuit Diagra conditioner ams r...

Страница 64: ...62 Do C omestic air ircuit Diagra conditioner ams r 12 2 Module board circuit diagram...

Страница 65: ...oner Outdoor unit Step Procedure Points 1 Features 1 Loosen the service cover screw and remove the service cover Be careful not to cut your finger by the fins of the heat exchanger 13 Removal Procedur...

Страница 66: ...air conditioner Step Procedure Points Step Procedure Points Step Procedure Points 2 Remove the panels 1 Loosen the 7 screws and lift the top panel 2 Loosen the screws of the panel 3 Pull and remove th...

Страница 67: ...6 5 Domestic air conditioner Step Procedure Points Remove the fixting screws then lift the electrical box...

Страница 68: ...omestic air conditioner Remove the air filters and horizontal flap Step Procedure Points 1 2 Loosen the fixting screws and remove The back protect net 1 Loosen the fixting screws and remove the side p...

Страница 69: ...6 7 Domestic air conditioner Remove the casing Step Procedure Points 1 Loosen the fixting screws and remove the side panel 2 Loosen the fixting screws and remove the cross beam...

Страница 70: ...6 8 Domestic air conditioner Step Procedure Points 3 Loosen the fixting screws remove the fan Loosen the fixting screws and lift the fan motor...

Страница 71: ...6 9 Domestic air conditioner Release stepping motor 2type Step Procedure Points 1 Remove the fixing screws then lift the fan motor bracket 2 Cut down the and pull out the compressor and remove the...

Страница 72: ...7 0 Domestic air conditioner Removal of Heat Exchanger Step Procedure Points Loosen the marked fixing screws Loosen the fixting hook and remove the heat exchanger...

Страница 73: ...7 1 Domestic air conditioner Step Procedure Points Remove the fixing screws then lift the heating pipe Remove the fixing screws then lift the valves...

Страница 74: ...72 Domestic air conditioner Step Procedure Points Remove the fixing screw then lift the valve set...

Страница 75: ...0 Grudzi dz 48 723 737 378 www haier ac pl Producent Qingdao Haier Air Conditioner Electric Co Ltd Haier lndustrial Park Qianwangang Road Eco Tech Development Zone Qingdao 266555 Shandong R P C 86 532...

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