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Haier HSU24VHG(DB)-G&W Service Manual Download Page 58

                                                                                                                             

Service Diagnosis

 

57 

Domestic Air Conditioner

 

 

7.3.7 EEPROM abnormal 

Indoor Display         

E4 

˖

Indoor EEPROM error       

F12

˖

Outdoor EEPROM error    LED1 flash 1 times

 

 

Method of               

The 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                     

Faulty  EEPROM data 

Causes                         

Faulty  EEPROM 

  

Faulty  PCB          

 

 

Troubleshooting    * Caution   

Be sure to turn off power switch before connect or disconnect connector, or 

parts damage may be occurred. 

 
 
 
 

 
Check the EEPROM of 

the indoor or outdoor mainboard

, and be sure it is right. 

Summary of Contents for HSU24VHG(DB)-G&W

Page 1: ...SERVICE MANUAL EK Series Wall mounted Type DC Inverter Model No HSU24VHG DB G W outdoor unit indoor unit and remote controller 2012 Order No AC1108S003V0...

Page 2: ...unit 14 5 2 Main functions and control specifications of outdoor unit 22 5 3 Value of Thermistor 28 6 System Configuration 40 6 1 System Configuration 40 6 2 Instruction 40 7 Error Codes and Descirpti...

Page 3: ...cket 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 c...

Page 4: ...ng the welder in an enclosed room can cause oxygen deficiency 1 1 2 Cautions Regarding Products after Repair Warning Be sure to use parts listed in the service parts list of the applicable model and a...

Page 5: ...eneration 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...

Page 6: ...able or extension cable or share the same power outlet with other electrical appliances since it can cause an electrical shock excessive heat generation or fire Caution Installation of a leakage break...

Page 7: ...replace it Corroded installation platform or frame can cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding can cau...

Page 8: ...peed LO MED HI AUTO Constant temperature dehumidification Avoid the child s wrong operation on the remote controller Sleep mode Catches most small particles and remove unpleasant odors effectively Wit...

Page 9: ...3 8 13X45X10 47 44 41 57 HSU24VHG DB G W 18 3 15 11 7 18 5 15 6 12 7 0 63 8500 25000 26200 6800 23600 25200 540 2120 2660 640 2230 2770 11 39 2 5 7 3 7 7 1720 5975 6364 9 7 10 2 3 0 2150 6330 6622 2...

Page 10: ...pints pounds inches inches lbs 0 62 R410a 48 3 1075 48 3 1075 119 111 29X34X12 32X39X17 56 40 66 5 HSU 24HEG03 R2 DB 4 6 1000 9 7 10 2 8 FV50BX 2230 2120 C 6RVN103H0T 98 98 lbs...

Page 11: ...STEP motor 4 CN21 Connector for power N wire 5 CN22 Connector for power L 6 CN7 Connector for display board 7 CN23 Connector for communicate between the indoor board and the outdoor board 8 CN35 Conne...

Page 12: ...the module board 10 CN14 Connector for communicate between indoor and outdoor unit 11 CN15 CN16 Connector for electric expansion valves PCB 2 module PCB CN11 Connector for the DC power 5V and 15V for...

Page 13: ...Domestic Air Conditioner 12 CN36 CN17 CN28 CN23 CN18 CN16 CN9 CN8 CN10 CN3 CN11 CN15 CN24 CN25 CN19 CN20 CN21 CN1 CN2 CN47 CN49 CN45 CN11 CN22 Connector Wiring Diagram...

Page 14: ...Domestic Air Conditioner 13 PCB 2 CN4 CN3 CN10 CN11 CN1 CN2 Connector Wiring Diagram CN9 CN7 CN6 CN5 CN8...

Page 15: ...n 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 12 Automatic When...

Page 16: ...on 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...

Page 17: ...low the heat start temp 4 Defrosting When the system receives the defrosting signal from outdoors the indoor fan will stop and the indoor temperature display won t change At the time any indoor coil m...

Page 18: ...ning 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...

Page 19: ...w the resume of the last malfunction If the system is under operation the press on the urgency key will stop it Under the system off mode the display screen will show automatic running sign Under the...

Page 20: ...no heating heating no heating airflow yes heating cooling yes 5 1 14 Malfunction list resume Nothing is presented if there is no code list The malfunction display will automatically finish in 10 secon...

Page 21: ...e indoor system After entering the power cut compensation mode the processing of the indoor system should be as the followings Remote control urgency singal operate according to the remote control and...

Page 22: ...m to the power circuit The CPU of the main control will be 60 times faster 5 2 The control system of outdoor unit 5 2 1 The operation frequency of outdoor unit and its control 5 2 1 1 The operation fr...

Page 23: ...ehumidification mode Serial No Temperature scope Frequency limitation Z H 5 5 1 z h _ x a M 8 2 c _ h W 1 Z H 5 8 2 z h _ x a M 2 3 c _ h W 2 Z H 5 8 3 z h _ x a M 0 4 c _ h W 3 Z H 5 8 4 z h _ x a M...

Page 24: ...n control when refrigerating or dehumidifying After the compressor is started for 5 seconds the outdoor fan is started at the medium speed at first after 30 seconds it begins to control the airflow sp...

Page 25: ...e mode of heating open the four way valve when the compressor is not started or changed to non heating mode make sure the compressor is stoped for 2 minutes and then close the four way valve 5 2 5 Pro...

Page 26: ...the speed of 1Hz 10seconds Remarks the outdoor unit 5 2 5 3 The control of preventing the overcurrent of the compressor During the starting process of the compressor if the curren of the compressor is...

Page 27: ...ing rapidly ice_temp_1 9 Stop When Tpg_indoor ice_temp_ the frequency of the compressor decreases at the speed of 1HZ 1second When Tpg_indoor ice_temp_25 the frequency of the compressor decreases at t...

Page 28: ...ure and the sensor s temperature are higher than 217 the frequency of the compressor decreases 1hz 10seconds Keep the frequency until it decreases to the lowest frequency When the temperatures are low...

Page 29: ...9863 3 688 13 928 36 66 3463 61 0123 56 0565 3 752 13 864 33 62 8755 57 9110 53 2905 3 816 13 832 29 59 6076 54 9866 50 6781 3 88 13 768 26 56 5296 52 2278 48 2099 3 944 13 704 23 53 6294 49 6244 45 8...

Page 30: ...9 2132 8 9148 6 44 11 56 99 9 1454 8 8465 8 5496 6 312 11 656 102 8 7942 8 4964 8 2013 6 216 11 752 105 8 4583 8 1621 7 8691 6 088 11 88 108 8 1371 7 8428 7 5522 5 96 11 976 111 7 8299 7 5377 7 2498...

Page 31: ...16 744 236 2 0337 1 8778 1 7324 0 584 16 872 239 1 9714 1 8186 1 6761 0 424 17 243 1 9113 1 7614 1 6219 0 264 17 128 246 1 8533 1 7064 1 5697 0 104 17 256 249 1 7974 1 6533 1 5194 0 056 17 416 252 1...

Page 32: ...5820 0 5183 6 168 22 632 367 0 6361 0 5667 0 5043 6 36 22 792 371 0 6200 0 5518 0 4907 6 552 22 952 374 0 6043 0 5374 0 4775 6 744 23 112 377 0 5891 0 5235 0 4648 6 936 23 24 380 0 5743 0 5100 0 4524...

Page 33: ...2968 28 4267 4 712 13 096 12 30 7162 28 8875 27 1431 4 776 13 032 15 29 2545 27 5519 25 9250 4 872 12 968 19 27 8708 26 2858 24 7686 4 936 12 904 22 26 5605 25 0851 23 6704 5 12 84 25 25 3193 23 9462...

Page 34: ...4 9430 4 6944 4 488 13 352 150 5 0163 4 7630 4 5185 4 36 13 48 153 4 8400 4 5905 4 3500 4 232 13 608 156 4 6708 4 4252 4 1887 4 104 13 704 159 4 5083 4 2666 4 0342 3 976 13 832 163 4 3524 4 1145 3 886...

Page 35: ...6 18 92 287 1 2583 1 1448 1 0405 1 976 19 08 291 1 2226 1 1113 1 0092 2 136 19 208 294 1 1880 1 0789 0 9789 2 296 19 368 297 1 1546 1 0476 0 9497 2 456 19 496 300 1 1223 1 0174 0 9215 2 648 19 656 303...

Page 36: ...0 216 16 712 65 9057 2314 7564 2244 6311 6413 0 184 16 712 61 8472 2852 7089 4741 5927 0206 0 152 16 68 58 7928 7217 6647 4547 5568 2222 0 088 16 648 55 7423 3626 6235 7109 5233 3554 0 056 16 648 52...

Page 37: ...768 15 496 63 850 6086 761 0603 680 3265 1 832 15 464 67 807 3024 723 4134 647 6580 1 896 15 4 70 766 4212 687 8205 616 7252 1 96 15 368 73 727 8172 654 1596 587 4271 2 024 15 336 76 691 3524 622 3161...

Page 38: ...616 13 224 198 118 7926 112 5589 106 5564 4 68 13 16 201 113 9241 108 0776 102 4388 4 776 13 096 204 109 2784 103 7961 98 5000 4 84 13 032 207 104 8443 99 7046 94 7315 4 904 12 936 211 100 6112 95 793...

Page 39: ...88 339 23 7620 22 5245 21 3323 3 592 14 216 342 23 0205 21 8002 20 6261 3 464 14 312 345 22 3055 21 1025 19 9465 3 336 14 44 348 21 6159 20 4303 19 2924 3 208 14 568 351 20 9508 19 7825 18 6626 3 08 1...

Page 40: ...0602 0 152 17 544 428 10 3151 9 5288 8 7945 0 312 17 672 431 10 0312 9 2586 8 5378 0 44 17 8 435 9 7563 8 9971 8 2895 0 6 17 96 438 9 4901 8 7441 8 0495 0 76 18 088 441 9 2322 8 4993 7 8175 0 888 18 2...

Page 41: ...System Configration...

Page 42: ...ay 6 TIMER OFF display TIMER ON display LO MED HI 7 TEMP display 16 LOCK button Used to lock buttons and LCD display 25 RESET button When the remote controller appears abnormal use a sharp pointed art...

Page 43: ...eration mode the unit will not operate in COOL or HEAT mode but only in FAN mode AUTO is not available in FAN mode And temp setting is disabled In FAN mode sleep operation is not available Emergency O...

Page 44: ...ts temp will become 2 lower than temp setting After another 1 hours temp decrease by 2 rises by 1 futher The unit will run for further 3 hours then stops Temp is lower than temp setting so that room t...

Page 45: ...of the European parliament herewith we inform the consumer about the dis posal requirements of the electrical and electronic products conditioning system treatment of the refrigerant of oil and of oth...

Page 46: ...ns For Smart Use of The Air Conditioner Replacement of Air Purifying Filter The white side of the photocatalyst air purifying filter face outside and the black side face the unit The green side of the...

Page 47: ...BITION PROHIBITION Do not start or stop the operation by disconnecting Do not channel the air flow directly at people especially at infants or the aged Do not try to repair or reconstruct by yourself...

Page 48: ...ediately until 3 minutes have Cautions 3 If the fuse of indoor unit on PC board is it with the type of T 3 15A 250V outdoor broken change it with the type of T 25A 250V Do not obstruct or cover the ve...

Page 49: ...lied Check the indoor PCB Check to make sure that 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 Equipme...

Page 50: ...62 F3 4 Communication fault between the IPM and outdoor PCB Page 55 F19 6 Power voltage is too high or low Page 60 F27 7 Compressor is lockrotor or stopt momentary F4 8 Overheat protection for exhaus...

Page 51: ...nput is more than 4 92V or less than 0 08V during compressor Decision operation Conditions z Note The values vary slightly in some models Supposed Faulty connector connection Causes Faulty thermistor...

Page 52: ...re inside the fan motor Operation halt due to breaking of the fan motor lead wires Detection error due to faulty indoor unit PCB How to check Fan Motor DC 1 Check connector connection 2 Check motor po...

Page 53: ...unit PCB Replace indoor fan motor PCB NO Replace indoor unit PCB Is motor control power voltageDC15V generated NO Does fan rotate smoothly NO Turn power ON and operate fan Does it rotate Yes Turn off...

Page 54: ...heck whether motor can run YES Is it normal N0 The motor of the outdoor unit is damaged and needs replacing Measure the voltage between 1 and 3 of the terminal of fan motor on the mainboard about DC31...

Page 55: ...se parts damage may be occurred Check the IPM module method Disconnect the compressor harness connector from the outdoor unit PCB To disengage the connector press the protrusion on the connector Then...

Page 56: ...isconnected Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred YES 1 Check whether Terminal CN23 and CN24 on the outdo...

Page 57: ...curred NO NO Electrify the machine again and turn it on with the remote controller then measure the temperature at the discharge temperature sensor of the compressor on the outdoor unit The temperatur...

Page 58: ...used to determine MCU Malfunction Detection Malfunction When the Data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed Faulty EEPROM data Causes Faulty EEPROM Faulty PCB Troubl...

Page 59: ...nditions Supposed Indoor unit outdoor unit signal transmission error due to wiring error Causes Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connect...

Page 60: ...door unit with a multimeter If 230VAC is available but 310DC not the power module is damaged replace it with a new one Test the outdoor power supply 230VAC and 310VDC with a multimeter The outdoor mai...

Page 61: ...etection circuit to the microcomputer Decision Conditions Supposed Supply voltage not as specified Causes The IPM module is broken The outdoor PCB is broken Troubleshooting Caution Be sure to turn off...

Page 62: ...mpressor Faulty PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Malfunction unso NO YES YES 1 The wiring of compress...

Page 63: ...compressor Faulty power supply Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES NO YES Electrify the machine again a...

Page 64: ...ment of piping directions Rear left Left Rear right Right Below G Attention must be paid to the pitch of drain hose X Y X Z Dimensions mm inches Model x y z 140 500 256 140 500 256 583 319 5 113 5 633...

Page 65: ...t the drain hose into the carity of heat insulation materials of indoor unit 2 Insert the indoor outdoor electric cable from backside of indoor unit and pull it out on the front side then connect them...

Page 66: ...r unit C 3 N 1 L 2 C 3 N 1 L 2 Outdoor unit Indoor unit Outdoor unit 1 2 N 2 3 C L 1 Max Elevation Amax 32ft 10m 09k 12k 50ft 15m 18k 24k In case the elevation A is more than 15ft 5m oil trap shoud be...

Page 67: ...Test Run 1 1 2 kg R410A 2 kg 2 1 B C D F E kg A This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Do not vent into the atmosphere Refrigerant type R410A GWP value 1975...

Page 68: ...67 Removal Procedure...

Page 69: ...68 Removal Procedure...

Page 70: ...69 Removal Procedure...

Page 71: ...Release 70 Removal Procedure...

Page 72: ...71 Removal Procedure...

Page 73: ...3 72 Removal Procedure...

Page 74: ...73 Removal Procedure...

Page 75: ...4 74 Removal Procedure...

Page 76: ...75 Removal Procedure...

Page 77: ...6 76 Removal Procedure...

Page 78: ...77 Removal Procedure...

Page 79: ...removal procedure of outdoor 9 2 1 Removal of Outdoor panel Step Procedure Points 1 Features 1 Loosen the service cover screw and remove the service cover Be careful not to FXW RXU QJHU E WKH QV RI WK...

Page 80: ...ic air conditioner s t n i o P e r u d e c o r P p e t S 2 Remove the panels 1 Loosen the 4 screws and lift the top panel 2 Loosen the screws of the panel 3 Pull and remove the front panel Removal Pro...

Page 81: ...80 Domestic air conditioner 9 2 2 Romoval of Electrcal Box s t n i o P e r u d e c o r P p e t S screws then lift the electrical box Removal Procedure...

Page 82: ...81 Domestic air conditioner 9 2 3 Romoval of the Side panel s t n i o P e r u d e c o r P p e t S 1 screws and remove the side panel Removal Procedure...

Page 83: ...82 Domestic air conditioner s t n i o P e r u d e c o r P p e t S 2 Remove the 3 screws and remove the side panel Removal Procedure...

Page 84: ...Domestic air conditioner s t n i o P e r u d e c o r P p e t S 1 Loosen the remove the fan Put the lead wire of motor when the propeller fan 9 2 4 Removal of fan and fan motor Removal Procedure...

Page 85: ...84 Domestic air conditioner Step Procedure Points 2 RRVHQ WKH LQJ screws and lift the fan motor Removal Procedure...

Page 86: ...85 Domestic air conditioner Step Procedure Points 3 5HPRYH WKH LQJ screws then lift the IDQ PRWRU EUDFNHW Removal Procedure...

Page 87: ...Domestic air conditioner Step Procedure Points 4 5HPRYH WKH LQJ screws then lift the proof plate Removal Procedure...

Page 88: ...87 Domestic air conditioner 2 Step Procedure Points 1 Cut down the FRQHFWLQJ SLSH and pull out the compressor and remove the YDOXH EUDFNHW Removal Procedure...

Page 89: ...88 Domestic air conditioner Step Procedure Points 2 RRVHQ WKH PDUNHG LQJ VFUHZV Removal Procedure...

Page 90: ...89 Domestic air conditioner Step Procedure Points 3 RRVHQ WKH LQJ KRRN DQG UHPRYH WKH KHDW H FKDQJHU Removal Procedure...

Page 91: ...90 Domestic air conditioner Step Procedure Points 4 Remove the YDOYH EUDFNHW Removal Procedure...

Page 92: ...WiringDiagrams 91 Domestic Air Conditioner 10 Wiring Diagrams 10 1 INDOOR UNIT up and down H17 CN52...

Page 93: ...1 1 86 7 9 1 1 02 8 20 02 8 32 5 72 1 225 81 7 1 1 25 1 1 1 1 1 1 1 1 1 5 8 6 9 1 1 3 1 3 3 3 2035 6625 5 725 5 1 287 225 3 028 3 75 3 16 21 1 8 9 3 1 1 1 0 9 9 02725 02725 1 1 1 287 287 3 3 1 1 1 7 7...

Page 94: ...UZZ 1 34 UDSTEP6 1 33 UDSTEP7 1 32 UDS TEP 8 1 31 UDS TEP 9 1 25 UDS TEP 1 1 28 UDS TEP 2 1 29 UDS TEP 3 1 30 UDS TEP 4 1 32 UDSTEP8 1 31 UDSTEP9 1 25 UDSTEP1 1 28 UDSTEP2 1 29 UDSTEP3 1 30 UDSTEP4 1...

Page 95: ...50V C29 104 50V E17 4 7U 16V E16 4 7U 16V E19 4 7U 16V E18 4 7U 16V E15 4 7U 16V E14 4 7U 16V E13 4 7U 16V XG A CG A 5V 5V XG B CG B 5V 5V 5V R59 10K 1 R58 10K 1 R57 1K R50 1K R56 1K R45 1K R44 1K C2...

Page 96: ...7130K R 228130K R229 4 22 K D205 LL414 8 D204 LL414 8 5V 1 2 3 CN1 0 POWER BLUE 15 V 5V C501 10 0U 1 6V C011 10 4 C502 10 0U 2 5V C012 10 4 D206 24 V 1W 15 V R017 4 7K 5V R233 10 R232 10 R230 10 5V C0...

Page 97: ...50Hz D means the developing sequence and R1 means the refrigerant is R407C The series number Applicable voltage V 230 208V H heat pump Nominal cooling capacity 24000 BTU h The structure code of indoor...

Page 98: ...Wu Hongjin Chen Huimin Yu Huali Wang Fei 86 532 88936935 The end Sincere Forever Haier Group HSU 24HEG03 R2 DB SM...

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