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Haier 2HUM18HC03-R2 Service manual

Other manuals for 2HUM18HC03-R2: Installation Manual, Installation Manual
Manual is about: EK Series Wall mounted Type

Summary of 2HUM18HC03-R2

  • Page 1

    Service manual order no. Ek-series © (qingdao haier air conditioner general corp.,ltd) all right reserved .Unauthorized copying and distribution is a violation of law haier group this service information is designed for experienced repair technicians only and is not designed for use by the general p...

  • Page 2

    14 14 40 40 40 28 48 64 68 70 72 horiaontal flap 9 9.1 9.2 9.3 75 73 n a p n i a r d 74 vertical blades and swing motor 76 78 9.4 9.5 9.6 9.7 9.8 5.3 22 5.2 68 removal of front panel removal of air filter of indoor unit main function and control specification of outdoor unit 2hum18hc03/r2(db)-sm.

  • Page 3

    91 91 92 94 11 description of coding rules of unit model.......................................................95 85 80 86 9.9 9.10 removal of fan and fan motor 9.11 ........................................................................ ................................................................

  • Page 4

    Introduction domestic air conditioner 1. Introduction 1.1 safety cautions be sure to read the following safety cautions before conducting repair work. The caution items are classified into “warning” and “caution”. The “warning” items are especially important since they can lead to death or serious i...

  • Page 5

    Introduction domestic air conditioner warning do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to prov...

  • Page 6

    Introduction domestic air conditioner warning be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient...

  • Page 7

    Introduction domestic air conditioner 1.1.3 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...

  • Page 8

    Introduction domestic air conditioner caution check to see if the parts and wires are mounted and connected properly, 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...

  • Page 9

    Category healthy negative ion child lock 3d air flow 24hour timer easy clean design intelligent air anti-mold filter 4 fan setting auto mode power mode soft mode note: y: holding functions n : no functions make your room full of an abundance natural negative ions. Functions quick cooling or heating ...

  • Page 10: 3 Specification

    19450(5900~22000) 17200(4450~19600) 1575(360~2050) 1570(440~2075) 3.21 3.63 3.63 - - 0.15 0.15 0.15 0.15 33 33 33 33 5.7(1.73~6.45) 8.8. 11.3 8.8 11.3 4 4 5.05(1.3~5.75) 4343(1118~4945) 7 7.6 7.6 1590(385~2065) 1570(490~2125) 7.7 7.6 2.8 30(double)20(single) 30(double)20(single) 20 15 20 20 15 20 36...

  • Page 11

    0.5 r410a 1.4 0.5 r410a 1.4 35 1236 35 1236 35 1236 35 1236 46.5 43.5 51 688x810x288 688x810x288 745x949x406 46.5 43.5 745x949x406 1575 1570 7.6 7.7 1590 1570 7.6 7.6 51 40 40 61 61 51 51 61 61 900 fv50s 900 fv50s 5 2hum18hc03/r2(db)-sm 2 m y g f 0 3 1 b n s 2 m y g f 0 3 1 b n s 8 8 90 90 90 90

  • Page 12

    2hum18hc03/r2(db)-sm connector wiring diagram 9 domestic air conditioner 4.1 indoor unit connectors connectors pcb(1) 1) cn26 connector for fan motor 2) cn1 connector for heat exchanger thermistor and room temperature thermistor 3) cn11 connector for up&down step motor 4) con2 connector for power n ...

  • Page 13

    2hum18hc03/r2(db)-sm connector wiring diagram 10 domestic air conditioner pcb(1) cn11 cn32 cn1 cn26 cn27 sw1 con2 con1 con8 con7 con6 cn34 cn20

  • Page 14

    2hum18hc03/r2(db)-sm connector wiring diagram 11 domestic air conditioner 4.2: outdoor unit connectors pcb(1) (control pcb) 1) cn1,cn2 connector for power n and l 2) cn3 connector for ground 3) cn23 connector for dc power 15vand 5v to the module board 4) cn9,cn10 connector for cn2,cn1 on the module ...

  • Page 15

    2hum18hc03/r2(db)-sm connector wiring diagram 12 domestic air conditioner pcb(1) cn36 cn17 cn28 cn23 cn18 cn16 cn9 cn10 cn3 cn11 cn15 cn24 cn25 cn19 cn20 cn21 cn1 cn2 cn22.

  • Page 16

    2hum18hc03/r2(db)-sm connector wiring diagram 13 domestic air conditioner pcb(2) cn1 cn5 cn6 cn7 cn10 cn11 cn8 cn9 cn4 cn3 cn2.

  • Page 17: 5.Funcitions and Control

    2hum18hc03/r2(db)-sm wiring diagrams 14 domestic air conditioner 5.Funcitions and control 5.1 main functions and control specification of indoor unit 5.1.1 automatic operation when the system is under the automatic operation option, the appropriate operation mode will be decided according to the dif...

  • Page 18

    2hum18hc03/r2(db)-sm wiring diagrams 15 domestic air conditioner manus: when the system is operating, you can set the high, medium or low speed manually. ( when the sensor is on or off, the system will change the speed 2 seconds after receiving the signal.) *airgate location control: the location fo...

  • Page 19

    2hum18hc03/r2(db)-sm wiring diagrams 16 domestic air conditioner * timing system on/off function. * dormant control function. 5.1.4 heating operation mode. * temperature control range: 16---30 ć * temperature difference: r1ć * control feature: the temperature compensation is automatically added and ...

  • Page 20

    2hum18hc03/r2(db)-sm wiring diagrams 17 domestic air conditioner until the compressor has been started up for 30 seconds. The indoor temperature display will not change and the system operates at the cold air proof mode. * automatic heating temperature compensation: when the system enters the heatin...

  • Page 21

    2hum18hc03/r2(db)-sm wiring diagrams 18 domestic air conditioner 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 singal. You can have the dormacy setting ...

  • Page 22

    2hum18hc03/r2(db)-sm wiring diagrams 19 domestic air conditioner 5.1.10 urgent on/off input press the urgency button the buzzer will ring. The system will enter the automatic mode if you don’t press the button for more than 5 seconds. Under the system off mode, if you press the urgency key for 5 to ...

  • Page 23

    2hum18hc03/r2(db)-sm wiring diagrams 20 domestic air conditioner 5.1.13 abnormal operation of indoor system when the outdoor system operates, if the indoor system operation differs from the outdoor system, the abnormal operation malfunction will be reported. 10s after the report, the indoor system w...

  • Page 24

    2hum18hc03/r2(db)-sm wiring diagrams 21 domestic air conditioner operate according to the set mode and neglect the communication signals of the outdoor system. However, it has to send signals to the outdoor system. * quitting condition: this mode can be quitted after receiving the quitting signal fr...

  • Page 25

    2hum18hc03/r2(db)-sm wiring diagrams 22 domestic air conditioner second—led screen lights for 0.5 second— the step-in motor fully output for 0.5 second—then the motor doesn’t output for 0.5 second—the motor fully output again for 0.5 second. The test program finishes. 5.1.20 time cutting function: c...

  • Page 26

    2hum18hc03/r2(db)-sm wiring diagrams 23 domestic air conditioner serial no. Temperature scope frequency limitation 1 wh_c max_hz8 120 hz 2 wh_c max_hz7 120hz 3 wh_c max_h z4 120 hz 4 wh_c max_hz5 120hz 5 wh_c max_hz1 100hz 6 wh_c max_hz2 56 hz 7 wh_c> ˙18 max_hz6 44 hz remarks: the above are the max...

  • Page 27

    2hum18hc03/r2(db)-sm wiring diagrams 24 domestic air conditioner the calculation of the actual output frequency: when there is no healthy airflow: f =f-ed-* hphk when the healthy airflow has been set: f =f-ed-* hphk˄airflow speed˅hk˄healthy airflow˅ when refrigerating, it is needed to satisfy ˢˉ˩inˉ...

  • Page 28

    2hum18hc03/r2(db)-sm wiring diagrams 25 domestic air conditioner when the outdoor unit is shut down, the valve is opened completely for 2 minutes, and then begin initialization. The scope of refrigerationg valve 90-----480 steps the scope of heating valve 80-----480 steps the valves are adjusted acc...

  • Page 29

    2hum18hc03/r2(db)-sm wiring diagrams 26 domestic air conditioner tc the compressor stops fgh_t1 ˉ2 fgh_t1 65ć n decreasing the frequency rapidly fgh_t2 59 ć fgh_t2 ˉ2 p decreasing the frequency slowly fgh_t3 55 ć fgh_t3 ˉ2 q prohibiting increasing the frequency fgh_t4 51 ć fgh_t4 ü2 r increasing slo...

  • Page 30

    2hum18hc03/r2(db)-sm wiring diagrams 27 domestic air conditioner Ńwhen the outdoor environment temperature is higher than 50ć,ac current protection value decreases by 20ad 5.2.5.5 antifreezing protection of the indoor heat exchanger when refrigerating/heating, prevent freezing. Tpg_indoor Ў is the m...

  • Page 31

    2hum18hc03/r2(db)-sm wiring diagrams 28 domestic air conditioner light shoud be off for 5 seconds. B) ǃfor the units’ malfunctins˖annex 1 if there’s malfunction with the units, this will not affect the run of the complete appliance, but this can be displayed by the malfunction light, the light flash...

  • Page 32

    2hum18hc03/r2(db)-sm wiring diagrams 29 domestic air conditioner -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...

  • Page 33

    2hum18hc03/r2(db)-sm wiring diagrams 30 domestic air conditioner 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 10.7...

  • Page 34

    2hum18hc03/r2(db)-sm wiring diagrams 31 domestic air conditioner 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 -...

  • Page 35

    2hum18hc03/r2(db)-sm wiring diagrams 32 domestic air conditioner 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 0.5820 0.5183 -4.74 4.26 112 0.6361 0.5667 0.5043 -4.80 4.31 113 0.6200 0.5518 0.4907 -4.86 4.36 114 0.6043 0.5374 0...

  • Page 36

    2hum18hc03/r2(db)-sm wiring diagrams 33 domestic air conditioner -3 37.4465 35.0144 32.7108 -1.41 1.33 -2 35.6202 33.3552 31.2062 -1.38 1.31 -1 33.8936 31.7844 29.7796 -1.36 1.29 0 32.2608 30.2968 28.4267 -1.34 1.28 1 30.7162 28.8875 27.1431 -1.32 1.26 2 29.2545 27.5519 25.9250 -1.29 1.24 3 27.8708 ...

  • Page 37

    2hum18hc03/r2(db)-sm wiring diagrams 34 domestic air conditioner 42 5.3916 5.1308 4.8783 -1.37 1.33 43 5.2001 4.9430 4.6944 -1.41 1.36 44 5.0163 4.7630 4.5185 -1.45 1.40 45 4.8400 4.5905 4.3500 -1.49 1.44 46 4.6708 4.4252 4.1887 -1.53 1.47 47 4.5083 4.2666 4.0342 -1.57 1.51 48 4.3524 4.1145 3.8862 -...

  • Page 38

    2hum18hc03/r2(db)-sm wiring diagrams 35 domestic air conditioner 87 1.2583 1.1448 1.0405 -3.43 3.15 88 1.2226 1.1113 1.0092 -3.48 3.19 89 1.1880 1.0789 0.9789 -3.53 3.24 90 1.1546 1.0476 0.9497 -3.58 3.28 91 1.1223 1.0174 0.9215 -3.64 3.33 92 1.0910 0.9882 0.8942 -3.69 3.37 93 1.0607 0.9599 0.8679 -...

  • Page 39

    2hum18hc03/r2(db)-sm wiring diagrams 36 domestic air conditioner -24 9687.0270 8074.3787 6724.1389 -2.88 2.41 -23 9057.2314 7564.2244 6311.6413 -2.87 2.41 -22 8472.2852 7089.4741 5927.0206 -2.86 2.40 -21 7928.7217 6647.4547 5568.2222 -2.84 2.39 -20 7423.3626 6235.7109 5233.3554 -2.83 2.39 -19 6953.2...

  • Page 40

    2hum18hc03/r2(db)-sm wiring diagrams 37 domestic air conditioner 21 691.3524 622.3161 559.6694 -2.16 1.96 22 656.8979 592.1831 533.3634 -2.14 1.95 23 624.3328 563.6604 508.4261 -2.12 1.93 24 593.5446 536.6540 484.7796 -2.10 1.92 25 564.4275 511.0760 462.3510 -2.09 1.90 26 536.9865 486.9352 441.1516 ...

  • Page 41

    2hum18hc03/r2(db)-sm wiring diagrams 38 domestic air conditioner 66 89.0211 85.0614 81.2048 -1.18 1.15 67 85.4976 81.7908 78.1744 -1.15 1.12 68 82.1303 78.6615 75.2715 -1.13 1.10 69 78.9116 75.6668 72.4902 -1.10 1.08 70 75.8343 72.8004 69.8249 -1.08 1.06 71 72.8916 70.0561 67.2703 -1.05 1.03 72 70.0...

  • Page 42

    2hum18hc03/r2(db)-sm wiring diagrams 39 domestic air conditioner 111 18.5157 17.4166 16.3680 -2.02 1.93 112 17.9590 16.8769 15.8458 -2.06 1.96 113 17.4214 16.3564 15.3427 -2.10 2.00 114 16.9023 15.8542 14.8577 -2.15 2.04 115 16.4010 15.3696 14.3902 -2.19 2.08 116 15.9167 14.9020 13.9394 -2.23 2.12 1...

  • Page 43

    40 2hum18h c03/r2(db)-sm.

  • Page 44: 8 Installation

    41 domestic air conditioner 2hum18hc03/r2(db)-sm introduction outdoor unit 4 loading of the battery 1 2 3 4 parts and functions indoor unit outlet inlet connecting piping and electrical wiring drain hose remote controller remove the battery cover; load the batteries as illustrated. 2 r-03 batteries,...

  • Page 45

    42 domestic air conditioner 2hum18hc03/r2(db)-sm introduction operation air flow direction adjustment press fan button. For each press, fan speed follows: remote controller: press button every time the button is pressed, temp.Setting increase 1 o c,if kept depressed, it will increase rapidly every t...

  • Page 46

    43 domestic air conditioner 2hum18hc03/r2(db)-sm introduction operation sleep operation if the wind speed is high or middle before setting for the sleep, set for lowing the wind speed after sleeping. If it is low wind, no change. 5.Set the wind speed change when sleeping use of sleep function operat...

  • Page 47

    44 domestic air conditioner 2hum18hc03/r2(db)-sm introduction operation set clock correctly before starting timer operation. 1.After unit starts, select your desired operation mode. 2.Press timer button to change timer mode. Every time the button is pressed, display changes as follows: remote contro...

  • Page 48

    45 domestic air conditioner 2hum18hc03/r2(db)-sm introduction maintenance setting of proper room temperature close doors and windows during operation if the unit is not to be used for a long time, turn off the power supply main switch. Use the timer effectively use the louvers effectively do not blo...

  • Page 49

    46 domestic air conditioner 2hum18hc03/r2(db)-sm introduction the power supply cord and so on. 2. Do not install in the place where there is any possibility of inflammable gas leakage around the unit. 3.Do not get the unit exposed to vapor or oil steam. Cautions please call sales/service shop for th...

  • Page 50

    47 domestic air conditioner 2hum18hc03/r2(db)-sm introduction trouble shooting normal performance inspection noise is heard phenomenon cause or check points the system immediately. Smells are generated. Mist or steam are multiple check poor cooling when unit is stopped, it won't restart elapsed to p...

  • Page 51

    2hum18hc03/r2(db)-sm wiring diagrams 48 domestic air conditioner 7.Service diagnosis 7.1 caution for diagnosis the operation lamp flashes when any of the following errors is detected. 1.When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling...

  • Page 52

    S m a r g a i d g n i r i w m s - ) b d ( 2 r / 3 0 c h 8 1 m u h 2 49 domestic air conditioner 7.3.Error codes and description indoor display code indication description reference page indoor outdoor (led1 flash times) indoorand outdoor e7 15 communication fault between indoor and outdoor units pag...

  • Page 53

    2hum18hc03/r2(db)-sm wiring diagrams 50 domestic air conditioner 7.3.1 thermistor or related abnormality indoor display e1: room temperature sensor failure e2: heat-exchange sensor failure outdoor display led1 flash 10 times ˖frost-removing temperature sensor failure led1 flash 11 times ˖suction tem...

  • Page 54

    2hum18hc03/r2(db)-sm wiring diagrams 51 domestic air conditioner 7.3.2 eeprom abnormal indoor display e4: indoor eeprom error indoor display f12: outdoor eeprom error ;outdoor led1 flash 1 times method of the data detected by the eeprom are used to determine mcu malfunction detection malfunction whe...

  • Page 55

    2hum18hc03/r2(db)-sm wiring diagrams 52 domestic air conditioner or else parts damage may be occurred. Check whether terminals on indoor pcb is well ? Electrify the machine again and turn it on in the cooling operation, measure voltage between the positions 1and 3 of terminal cn5 on the indoor pcb t...

  • Page 56

    2hum18hc03/r2(db)-sm wiring diagrams 53 domestic air conditioner 7.3.4 outdoor dc fan motor fault check whether terminal on the outdoor mainboard is well inserted. Is it normal? Yes no reinsert the terminals electrify the machine again and turn it on in the cool state with the remote controller. Che...

  • Page 57

    2hum18hc03/r2(db)-sm wiring diagrams 54 domestic air conditioner 7.3.5 ipm protection outdoor display led1 flash 2 times method of ipm protection is detected by checking the compressor running condition and so on malfunction detection malfunction Ƶ the system leads to ipm protection due to over curr...

  • Page 58

    2hum18hc03/r2(db)-sm wiring diagrams 55 domestic air conditioner 7.3.6 over-current of the compressor outdoor display led1 flash 3 or 24 or 25 times method of the current of the compressor is too high malfunction detection malfunction when the ipm module is damaged decision or the compressor is dama...

  • Page 59

    2hum18hc03/r2(db)-sm wiring diagrams 56 domestic air conditioner 7.3.7 the communication fault between ipm and outdoor pcb outdoor display led1 flash 4 times method of communication is detected by checking the ipm module and the outdoor pcb malfunction detection malfunction Ŷ the outdoor pcb broken ...

  • Page 60

    2hum18hc03/r2(db)-sm wiring diagrams 57 domestic air conditioner 7.3.8 power supply over or under voltagve fault outdoor display : led1 flash 6 times the power supply is over voltage method of an abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfuncti...

  • Page 61

    2hum18hc03/r2(db)-sm wiring diagrams 58 domestic air conditioner troubleshooting * caution be sure to turn off power switch before connect or disconnect connector, or else parts damage may be occurred. 7.3.9 overheat protection for exhaust temperature outdoor display led1 flash 8 times method of the...

  • Page 62

    2hum18hc03/r2(db)-sm wiring diagrams 59 domestic air conditioner 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 shortly after the ć machine starts ...

  • Page 63

    2hum18hc03/r2(db)-sm wiring diagrams 60 domestic air conditioner 7.3.10 the communication fault between indoor and outdoor indoor display e7 outdoor display led1 flash 15 times method of communication is detected by checking the indoor pcb and the outdoor pcb malfunction detection malfunction Ŷ the ...

  • Page 64

    2hum18hc03/r2(db)-sm wiring diagrams 61 domestic air conditioner ˄a˅ no yes yes check the indoor mainboard. No if the voltage is of a constant value of 0v dcto5v dc yes measure the voltage between jumpers 3 and 4 of ic1 on the indoor mainboard with a multimeter. No the outdoor mainboard is damaged; ...

  • Page 65

    2hum18hc03/r2(db)-sm wiring diagrams 62 domestic air conditioner 7.3.11 loss of synchronism detection inverter side current detection is abnormal outdoor display led1 flash 18 times led1 flash 19 times method of the position of the compressor rotor can not detected normally malfunction detection mal...

  • Page 66

    2hum18hc03/r2(db)-sm wiring diagrams 63 domestic air conditioner 7.3.12 high work-intense protection outdoor display led1 flash 21 times method of high work-intense control is activated in the heating mode if the temperature malfunction being sensed by the heat exchanger thermistor exceeds the limit...