Haier AS18JDJHRA Service Manual Download Page 36

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Service diagnosis

Domestic air conditioner

10.3.3 Indoor DC fan motor malfunction

Indoor Display

■ □ ★

E14

Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine

Malfunction abnormal fan motor operation

Detection

Malfunction when the detected rotation feedback signal don’t received in 2 minutes

Decision

Conditions

Supposed

■

Operation halt due to breaking of wire inside the fan motor.

Causes

■

Operation halt due to breaking of the fan motor lead wires

■

Detection error due to faulty indoor unit PCB

Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or else

parts damage may be occurred.

Check whether

terminals on indoor

pcb is well

Pull out the terminals on

the indoor mainboard and

reinsert them.

Turn off power switch,and pull out the fan motor.

Measure the resistances between balck line (0V)and white

line(15V) ,balck line (0V)and red line(310V) of indoor fan motor .

The

resistances range is

between 30K

with

The

indoor fan

motor is damaged

and need replace

YES

the indoor pcb is damaged

and need replace

Summary of Contents for AS18JDJHRA

Page 1: ...dangers in attemptin g to servic e a product Product s powered by electricit y should be service d or repaire d only by experience d professiona l technicia ns Any attemp t to service or Repai r the produc t or product s dealt with in this servic e information by anyone else could result in seriou s injury or death WARNING Version V1 Date 20190409 2019 Qingdao Haier Air Conditioner General corp Lt...

Page 2: ...troduction 1 2 Features 7 3 Specifications 8 4 Sensors list 9 5 Piping diagrams 10 6 Printed Circuit Board Connector Wiring Diagram 11 7 Functions and Control 8 Dimensional drawings 9 Center of gravity 10 Service Diagnosis 11 Circuit diagrams 14 43 27 25 25 ...

Page 3: ...l name explanation A S 1 8 J D J H R A Indoor unit Type of indoor unit S wall mounted Nominal cooling capacity 18000BTU h Series of indoor units J Series Platform of indoor units D Platform Version number Heat pump R410A refrigerant DC Apply toT1 220 240V50HZ 1ph ...

Page 4: ...t 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 conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the discharging refriger...

Page 5: ...ing the 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 appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating t...

Page 6: ...generation or fire Do not damage or modify the power cable Damaged or modified power cable can cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable can damage the cable Do not mix air or gas other than the specified refrigerant R 410A R22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results ...

Page 7: ...roperly water can enter the room and wet the furniture and floor 1 2 3 Inspection after Repair Warning Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet all the way If the plug has dust or loose connection it can cause an electrical shock or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damage...

Page 8: ...k Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor 1 2 4 Using Icons Icons are used to attract the attention of the reader to specific information The meaning of each icon is described in the table below 1 2 5 Using Icons List Icon Type of Information Description Note Note A note provides informa...

Page 9: ...ort in heating operation by reducing defrosting time Auto Vertical Airﬂow With one special step motor to adjust the horizontal ﬂaps moving vertically and automatically it can realize 5 positions air angle 2 intelligent air angle and total auto blowing when the unit is switched off the ﬂap will close automatically Easy Support Clip It is more convenient for installation by extending space with addi...

Page 10: ...70 4770 23550 Power Consumption Ra 1 5 1 4 W K d e t 4 6 7 5 W W P O C S R E E S h W K n o i t p m u s n o c y g r e n e l a u n n A 253 1401 h m l a v o m e R e r u t s i o M 2 0 10 TECHNICAL SPECIFICATIONS 1050X235X350 m m W D H s n o i s n e m i D 1150X347X455 m m W D H s n o i s n e m i D d e g a k c a P 14 9 G K t h g i e W 18 9 G K t h g i e w s s o r G e t i h W r o l o C Sound level Sound ...

Page 11: ... shown in the table below Indoor 27 DB 19 WB Outdoor 35 DB 24 WB Indoor 20 DB Outdoor 7 DB 6 WB 5m 4 Sensors list type Description Qty 1 Conversation formulae Kcal h KW 860 Btu h KW 3414 cfm m min 35 3 9 10 0 750 Pipe sensor Its used for detecting pipe temperature e p y T r o output t o M h c t i f e g a t s t n e m g e S 4 1 6 1 3 l e d o m r e l l o r t n o c e t o m e R h t g n e l g n i p i P ...

Page 12: ... Piping diagrams Domestic air conditioner 5ˊPiping diagrams ＥＥＶ 10 ＥＥＶ ...

Page 13: ...or for heat exchanger thermistor and Room temperature thermistor 3 CN5 Connector for UP DOWN STEP motor 4 CN11 Connector for L R STEP motor 5 CN21 Connector for power N wire 6 CN17 Connector for power L In 7 CN7 Connector for display board 8 CN18 Connector for humidity sensor J4 ON J1 OFF J3 OFF Connector for power L Out CN22 9 CN49 Connector for electrostatic dust collection module 10 CN56 Connec...

Page 14: ...Connector Wiring diagrams Domestic air conditioner 12 CN15 CN12 CN50 CN16 CN56 CN7 CN25 CN6 CN49 CN11 CN35 SW1 CN18 CN5 CN9 ...

Page 15: ... ANION GENERATOR FUSE DC FAN MOTOR C N 21 JP 1 TIME LAG S W 1 EMERGENCY SWITCH C N 35 WIFI C N 3 0 JP 3 PROGRAM 1 The dotted parts are optional 2 Hazardous substance A should meet the relevant requirements of standard Q TR 0603 001 and Q HR 0603 003 C N 41 C N 49 C N 6 HUMIDITY SENSOR C N 50 C N 12 C N 15 C N 16 T 3 15A 250 V A C C N 56 ANION MODULE C N 25 U P S HUMAN LIGHT SENSORS CONTROLLER 3 C ...

Page 16: ...pened the indoor fan will operate at the set speed and the mode signal will be sent to the outdoor system The system will keep the original status if Tr Ts Airflow speed control temperature difference 1ć Automatic When Tr Ts 3ć high speed When Ts 1ć Tr Ts 3ć medium speed When Tr Ts 1ć low speed When the sensor is off low speed When the airflow speed has no delay from the high to low switching the ...

Page 17: ...l operation can not be made obligatory automatic operation Airgate location control the location for the airgate can be set according to your needs Defrosting function preventing the frosting on the indoor heat exchanger when cooling or demoisture When the compressor works continuously for 1 6 minutes adaptable in EEPROM and the temperature of the indoor coils has been below zero centigrade for 10...

Page 18: ... signals to the outdoor system Residue heat sending The indoor fan will send the residue heat at a low speed for 12 seconds If other conditions are satisfied when the compressor stops the indoor system will operate at a light speed The indoor fan will stop when the coil temperature is below the heat start temp 4 Defrosting When the system receives the defrosting signal from outdoors the indoor fan...

Page 19: ...off after the timing is finished The followings are several timing methods 1 system on timing The timing indicator will be lightened and the indoor system is under the waiting mode The light will be turned off when the timing is finished and the rest of the system will operate under a normal condition The timing starts since the last reception of the timing signal 2 system off timing When the syst...

Page 20: ...he remote control signal if the press on the urgency key doesn t last for 15 seconds or if the key is loosened Urgency operation If you press the urgency key for less than 5 seconds the buzzer will ring when you press the on off key The system will enter the urgency operation when the urgency key is loosened The urgency operation is fully automatic Test operation The inlet temperature sensor doesn...

Page 21: ...ity confirmation approaches 1 indoor temperature sensor abnormality Under the operation the normal temperature ranges from 120 degree to 30 degree When the temperature goes beyond this range the abnormality can be confirmed If the temperature goes back into the range the system will automatically resume 2 indoor heat interaction sensor abnormality Under the operation the normal temperature ranges ...

Page 22: ...ystem at high speed mode the location of the airflow direction board can be switched to the maximal position c Quitting condition The fixed frequency cooling can be quitted after receiving the remote signal and the system will enter the remote setting status 2 Fixed heating a under G code condition high speed heating set 30 press temperature key and the set key at the same time The system will ent...

Page 23: ...93 1 74 28 146 5609 131 7022 118 2434 1 91 1 73 27 138 1285 124 3392 111 8256 1 89 1 71 26 130 2371 117 4366 105 7989 1 87 1 70 25 122 8484 110 9627 100 1367 1 85 1 69 24 115 9272 104 8882 94 8149 1 83 1 67 23 109 4410 99 1858 89 8106 1 81 1 66 22 103 3598 93 8305 85 1031 1 80 1 64 21 97 6556 88 7989 80 6728 1 78 1 63 20 92 3028 84 0695 76 5017 1 76 1 62 19 87 2775 79 6222 72 5729 1 74 1 60 18 82 ...

Page 24: ...15 9315 1 03 1 01 14 16 6711 15 9601 15 2657 1 01 0 99 15 15 9366 15 2770 14 6315 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 12 2280 11 8126 11 4011 0 83 0 83 22 11 7102 11 3267 10 9459 0 81 0 80 23 11 2172 10 8634 10 5114 0 78 0 78 24 10 7475 1...

Page 25: ...29 2 04 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 2 31 2 17 65 2 4591 2 2840 2 1195 2 36 2 21 66 2 3815 2 2098 2 0486 2 40 2 25 67 2 3068 2 1383 1 9803 2 45 2 29 68 2 2347 2 0695 1 9147 2 49 2 34 69 2 1652 2 0032 1 8516 2 54 2 38 70 2 0983 1 9...

Page 26: ...69 100 0 8741 0 7863 0 7067 4 12 3 74 101 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 5957 4 46 4 02 107 0 7247 0 6482 0 5792 4 51 4 07 108 0 7059 0 6308 0 5632 4 57 4 12 109 0 6877 0 6140 0 5478 4 63 4 16 110 0 6700 0 5977 0 5328 4 69 4 21 111 0 6528 0...

Page 27: ...1 911 212 389 4 29 4 29 0 73 0 73 16 217 685 208 838 199 991 4 24 4 24 0 72 0 72 15 204 831 196 609 188 387 4 18 4 18 0 72 0 72 14 192 805 185 163 177 521 4 13 4 13 0 71 0 71 13 181 548 174 443 167 338 4 07 4 07 0 71 0 71 12 171 005 164 399 157 793 4 02 4 02 0 70 0 70 11 161 126 154 983 148 840 3 96 3 96 0 70 0 70 10 151 866 146 153 140 440 3 91 3 91 0 69 0 69 9 143 184 137 870 132 556 3 85 3 85 0...

Page 28: ... 32 215 31 448 2 38 2 38 0 50 0 50 19 31 385 30 671 29 957 2 33 2 33 0 49 0 49 20 29 874 29 210 28 546 2 27 2 27 0 48 0 48 21 28 445 27 828 27 211 2 22 2 22 0 47 0 47 22 27 095 26 521 25 947 2 16 2 16 0 46 0 46 23 25 816 25 283 24 750 2 11 2 11 0 45 0 45 24 24 606 24 111 23 616 2 05 2 05 0 45 0 45 25 23 460 23 000 22 540 2 00 2 00 0 44 0 44 26 22 396 21 947 21 498 2 04 2 04 0 45 0 45 27 21 386 20 ...

Page 29: ... 0 82 0 82 54 6 793 6 578 6 363 3 27 3 27 0 84 0 84 55 6 531 6 322 6 113 3 31 3 31 0 85 0 85 56 6 281 6 077 5 873 3 36 3 36 0 87 0 87 57 6 041 5 842 5 643 3 40 3 40 0 89 0 89 58 5 811 5 618 5 425 3 44 3 44 0 90 0 90 59 5 592 5 404 5 216 3 49 3 49 0 92 0 92 60 5 383 5 199 5 015 3 53 3 53 0 94 0 94 61 5 182 5 003 4 824 3 58 3 58 0 95 0 95 62 4 989 4 815 4 641 3 62 3 62 0 97 0 97 63 4 806 4 636 4 466...

Page 30: ... 4 71 4 71 1 51 1 51 88 2 045 1 952 1 859 4 76 4 76 1 55 1 55 89 1 983 1 892 1 801 4 80 4 80 1 57 1 57 90 1 923 1 834 1 745 4 84 4 84 1 59 1 59 91 1 865 1 778 1 691 4 89 4 89 1 61 1 61 92 1 809 1 724 1 639 4 93 4 93 1 63 1 63 93 1 755 1 672 1 589 4 98 4 98 1 63 1 63 94 1 702 1 621 1 540 5 02 5 02 1 66 1 66 95 1 652 1 572 1 492 5 06 5 06 1 66 1 66 96 1 602 1 524 1 446 5 11 5 11 1 69 1 69 97 1 554 1...

Page 31: ...Service diagnosis Domestic air conditioner 8 Dimensional drawings 9 Center of gravity 29 Ø65mm 59 230 Ø65mm 43 2 152 235 1050 350 103 8 235 1050 418 350 155 ...

Page 32: ...peration 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 only for heat pump Check for faulty operation of the electronic expansion valve Set the units to cooling operation and compare the temperatures of the liquid side connection pipes of the connection section among rooms to check th...

Page 33: ...Outdoor EEPROM error Page 30 F01 ƶ ƾ ƾ 2 The protection of IPM Page 34 F22 ƾ ƾ Ƶ 3 Overcurrent protection of AC electricity for the outdoor model Page 35 F03 Ƶ ƾ Ƶ 4 Communication fault between the IPM and outdoor PCB Page 36 F19 Ƶ ƾ ƶ 6 Power voltage is too high or low Page 37 F04 Ƶ ƾ Ƶ 8 Overheat protection for Discharge temperature Page 38 F21 ƶ ƶ ƾ 10 Defrost temperature sensor failure Page 29...

Page 34: ...r input is more than 4 92V or less than 0 08V during compressor Decision operation Conditions Note The values vary slightly in some models Supposed Faulty connector connection Causes Faulty thermistor Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Thermistor resistance check method Remove the connector...

Page 35: ...e Data detected by the EEPROM are used to determine MCU Malfunction Detection Malfunction When the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed Ŷ Faulty EEPROM data Causes Ŷ Faulty EEPROM Ŷ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor or outdoor mainboar...

Page 36: ...due to breaking of the fan motor lead wires Detection error due to faulty indoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Check whether terminals on indoor pcb is well Pull out the terminals on the indoor mainboard and reinsert them Turn off power switch and pull out the fan motor Measure the resis...

Page 37: ...ion and so on Malfunction Detection Malfunction Decision Conditions Supposed DC fan motor protection dues to the DC fan motor faulty Causes DC fan motor protection dues to faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred when the detected rotation feedback signal don t received in 2 minutes F08 ...

Page 38: ...e power Measure the resistances between black line 0V and red line 310V between black line 0V and white line 15V of the fan motor NO YES The resistances are greater than 40K NO YES The motor of the outdoor unit is damaged and needs replacing NO the resistances between 0V and 310V between 0V and 15V of the fan terminal of outdoor pcb are greater than 10M The module pcb is damaged replace it with a ...

Page 39: ... to IPM protection due to over current Decision Ŷ The compressor faulty leads to IPM protection Conditions Ŷ circuit component of IPM is broken and led to IPM protection Supposed Ŷ IPM protection dues to the compressor faulty Causes Ŷ IPM protection dues to faulty PCB of IPM module Ŷ Compressor wiring disconnected Troubleshooting Caution Be sure to turn off power switch before connect or disconnec...

Page 40: ...upply Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Electrify the machine again and turn it on with the remote controller If malfunctions are reported before or upon the compressor being started up IPM Module is damaged and needs replacing Repair the power supply The system may have been over or under charged with ga...

Page 41: ...disconnected Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred 1 Check whether Terminal CN23 and CN24 on the outdoor mainboard CN10 and CN11 on IPM module 2 Check whether the connected wire between IPM and outdoor Are they good Electrify the machine again and turn it on Check whether the voltage between 1 and 2 of T...

Page 42: ...Supply voltage not as specified Causes Ŷ the IPM module is broken Ŷ the outdoor PCB is broken Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Electrify the machine again and turn it on with the remote controller Check whether the compressor is started normally Is it ok Yes Maybe there is some disturbance NO No 230...

Page 43: ...e occurred Electrify the machine again and turn it on with the remote controller then measure the temperature at the exhaust temperature sensor of the compressor on the outdoor unit The temperature exceeds 110 ć shortly after the machine starts up 1 The cryogen may have been leaked during installation or there may be leakage in the piping system 2 There may be other causes to make the exhaust temp...

Page 44: ...ting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Restart the a c and it becomes normally If starting up normally but malfunction occurs again after a while The outdoor mainboard needs dehumidification The outdoor mainboard needs dedust Check whether the linking cable between the indoor and outdoor is well connected or whether...

Page 45: ...utdoor pcb is damaged replace it with a new one NO Measure the voltage Between 3 and 4 of IC9 on the Outdoor mainboard with a Multimete The voltage is a constant value of 0V DC to 5V DC The outdoor pcb is damaged replace it with a new one YES NO The outdoor pcb is well and then check the cable If the voltage is a constant value of 0V DC to 5V DC Or the voltage between Communication line red and N ...

Page 46: ...mpressor Ƶ Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Within 3 minutes after the machine is supplied with power and turned on with the remote controller check whether the compressor can start up 1 The wiring of compressor is incorrect or the connection is poor 2 The compressor is damaged At first the co...

Page 47: ... Dirty heat exchanger Ƶ Faulty heat exchange sensor Ƶ Insufficient gas Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred Electrify the machine again and turn it on with the remote controller check whether the wind temperature is below 65ć The malfunction is reported after the machine has run for some time 1 ǃ Check ...

Page 48: ...Circuit diagrams Domestic air conditioner 11 Circuit diagrams 46 ...

Page 49: ...Circuit diagrams Domestic air conditioner 47 ...

Page 50: ...ams Domestic air conditioner Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China_ Http www haier com Edited by Signed by Approved by Wang fang Yang Xiaodong Yang Wenjun Wu Hongjin ...

Page 51: ...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 with in this service information by anyone else could result in serious injury or death WARNING 2019 Qingdao Haier Air Conditioner General corp Ltd All rights reserved Unauthorized copying and distrib...

Page 52: ...1 Remove of front panel Indoor unit Step Procedure Points 1 Features 2 Remove the front panel 1 Release the three pieces of Cushion block ...

Page 53: ...2 Step Procedure Points 2 3 Hold the bottom side of front panel and lift it Loosen one screw and release the display module and remove the front panel ...

Page 54: ... filters and horizontal flap Step Procedure Points 1 Lift the right and left air filter upwards slightly and then pull it out downwards Remove the horizontal blade 1 Release the horizontal blade slightly and remove it ...

Page 55: ...4 Remove the casing Step Procedure Points 1 2 3 Loosen one screw and remove the cover Loosen one screw and remove the cover Loosen screw s and remove the cover ...

Page 56: ...he marked seven screws Release the marked hooks on the top side of unit and then pull the front grille out horizontally and remove it When assembling install the front grille horizontally so as not to stuff the flap inside When assembling make sure the four hooks are caught properly ...

Page 57: ...se stepping motor 2type Step Procedure Points 1 Loosen the stepping motor screws and then release the stepping motor Removal of Control Box Step Procedure Points 1 Loosen the control Box screw and then pull it ...

Page 58: ...ger 1 2 3 4 Loosen the marked Screws Pull mounting plate and heat exchanger bracket and then release them Release the fixture plate from the base frame hook and rotate it Loosen the marked screws and remove the heat exchanger ...

Page 59: ...8 Remove Fan rotor and Fan 1 2 Loosen the marked screws 6EA and release the cover and bracket of fan motor Loosen the marked screw 1EA and remove fan motor and fan ...

Page 60: ...9 Removal of mechanism modules of front panel Step Procedure Points 1 Loosen the marked screws and remove the mechanism modules of front panel ...

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