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Haier 18VHJ(DB) Service Manual

Manual is about: Haier Air Conditioner Service Manual

Summary of 18VHJ(DB)

  • Page 1

    Service manual order no. $&69 dc inverter e-series model no. Hsu12/18vhj(db) © (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 an...

  • Page 2

    19 19 46 46 46 30 25 54 54 55 68 72 72 82 91 9 hsu12/18vhj(db) of indoor unit main functions and control specifications of outdoor unit function of main thermistor 31 value of thermistor 4 service diagnosis 54 caution for diagnosis m 3 error codes and description indoor display for 12k indoor unit f...

  • Page 3

    12/ vhj(db) 101 101 102 106.

  • Page 4

    Introduction 1 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...

  • Page 5

    Introduction 2 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 pr...

  • Page 6

    Introduction 3 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. Insufficie...

  • Page 7

    Introduction 4 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 cab...

  • Page 8

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  • Page 9

    & dwhjru\ +689+-'% + hdowk\ qhjdwlyh lrq /hiw uljkw iorz 1 1 & klog orfn ' dlu iorz 1 1 + rxu wlp hu $ xwr uhvwduw ( dv\ fohdq ghvljq ,qwhooljhqw dlu $ qwlp rog ilowhu ) dq vhwwlqj ( 6 ) ilowhu 1 1 3 rz hu p rgh 6 riw p rgh 1 hjdwlyh lrq ilowhu 1 1 1 rwh 1 1 r ) xqfwlrqv 6 ohhs p rgh p dnh \rxu urrp...

  • Page 10

    1090(250-1450) 1190(250-1450) 16 8.0 1640(270-1900) 7.8 1650(270-1950) 9 8 7. 2 6. 3 45/ 42/38 53 53 5.4 5.9 3.95(0.88-4.25) 41 1/6 x 9 2/5 x 11 3/4 45 x 14 4/9 x 12 21/23 24 27.8 32 36.4 hsu12vhj(db) 3.51(0.88-3.95) 3018.6(756.8-3397) 3397(756.8-3655) 7 3/8 1/2 5/8 0.018 1/4 1/4 sl 4.8 4.8 16 0.15 ...

  • Page 11

    0.88 r410a r410a 35.27 42.33 79.4 72.8 49 63 59 21 3/8 x 30 5/6 x 10 2/51 24 1/6 x 36 3/5 x 13 2/5 780 780 3.5 3.5 53 31.6 4.9 4.8 1090 1050 20 26 80 80 650 ester oil vg74 900 fv50s rotary compressor snb130fgym2 49 63 59 25 1/3 x 30 5/6 x10 2/51 28 1/9 x 36 3/5 x 13 27/70 53 88.2 97 8 1115 31.6 1115...

  • Page 12

    Domestic air conditioner 3ulqwhg&lufxlw%rdug&rqqhfwru:lulqj'ldjudp 4.1 ᧶indoor unit connectors connectors pcb(1) (control pcb) 1) cn26 connector for fan motor 2) cn11 connector for step motor 3) cn8 connector for heat exchanger thermistor and room temperature thermistor 4)cn27 connector for fan feed...

  • Page 13

    Domestic air conditioner pcb(1) cn31 cn11 cn1 cn32 cn26 cn27 con2 cn30 con12 con8 ch1 10 hsu12/18vhj(db).

  • Page 14

    Domestic air conditioner connectors pcb(1) (control pcb) 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 wire 5) con1 connector for power l 6) cn32 connector for disp...

  • Page 15

    Domestic air conditioner pcb(1) cn26 con1 con2 cn11 cn32 cn1 cn48 con8 con6 con7 12 hsu12/18vhj(db).

  • Page 16

    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) cn22 connector for dc power 15vand 5v to the module board 4) cn16 connector for electric expansion valves 5) cn21 connector for dc fan motor 6) cn10 conne...

  • Page 17

    Domestic air conditioner pcb(1) cn2 cn1 cn4 cn8 cn25 cn26 cn24 cn23 cn22 cn17 cn18 cn19 cn20 cn16 cn21 cn10 cn3 14 hsu12/18vhj(db).

  • Page 18

    Domestic air conditioner pcb(2) cn1 cn2 cn3 cn4 cn5 cn6 cn7 cn11 cn10 15 hsu12/18vhj(db).

  • Page 19

    Domestic air conditioner connectors pcb(1) (control pcb) 1) cn1 cn2 connector for power n and l 2) cn3 connector for ground 3) cn22 connector for dc power 15vand 5v to the module board 4) cn16 connector for electric expansion valves 5) cn21 connector for dc fan motor 6) cn10 connector for four way v...

  • Page 20

    Domestic air conditioner pcb(1) cn2 cn1 cn4 cn8 cn25 cn26 cn24 cn23 cn22 cn17 cn18 cn19 cn20 cn16 cn21 cn10 cn3 17 hsu12/18vhj(db).

  • Page 21

    Domestic air conditioner pcb(2) cn1 cn2 cn3 cn4 cn5 cn6 cn7 cn11 cn10 18 hsu12/18vhj(db).

  • Page 22

    Domestic air conditioner 5.Funcitions and control 5.1 main functions and control specification of indoor unit this specification use for hsu12/18vhj ˄db˅frequency conversion air condition are manufactured by haier air condition parent company. "setting value" (express in parameter) in this specifica...

  • Page 23

    Domestic air conditioner 5.1.1.3 wind volume limit when the compressor is working and the max setting for indoor fan motor is medium or weak, the upper limit of indicated frequency is as follows: frequency control form for wind volume limited frequency variables limited frequency medium wind volume ...

  • Page 24

    Domestic air conditioner 5.1.2.2 when the compressor stops and remains idle for 3 minutes 20 seconds after the compressor stops, the up wind volume is weak (switching to sslo in silent running mode) and then slightly weak. While the down wind volume is stoped if the compressor stops when the heat ru...

  • Page 25

    Domestic air conditioner is in cooling mode, it operates with powerful cooling or silent cooling. When the main unit is in heating mode, it operates with powerful heating or silent heating. When the main unit is in wind-sending mode, there are no powerful or silent modes. There is no powerful mode f...

  • Page 26

    Domestic air conditioner 5.1.3.5 sleeping function a. After setting the sleeping function, the refrigerating mode and dehumidification mode will run as per the following rules: 1 hour 1 hour 6hours t( ̧) ts+4 ts+2 ts sleep off t(hour) b.After setting the sleeping function, the heating mode will run ...

  • Page 27

    Domestic air conditioner 5.1.3.8 rated operation rated cooling: when receiving the instruction of indoor unit rated operation, the unit will start rated cooling operation. Rated heating: when receiving the instruction of indoor unit rated operation, the unit will start rated heating operation. 24 hs...

  • Page 28

    Domestic air conditioner 5.2 main functions and control specification of outdoor unit sensor code definition: tai= indoor ambient temperature, tao=outdoor ambient temperature, tc1=indoor coil, td= air discharge, te= outdoor coil, ts=air intake 5.2.1 outdoor unit operation frequency and control compr...

  • Page 29

    Domestic air conditioner 5.2.2 outdoor fan control compressor startup within 3min ,outdoor fan speed control as follows: outdoor temperature 5 2 5 2 ī 0 1 0 1 cooling/ dehumidification 7 3 1 heating 2 3 5 fter compressor runs 3min ,outdoor fan speed control as follows: cooling/ dehumidification: com...

  • Page 30

    Domestic air conditioner te ”c×taˉĮ among which: c:ta ˘0ćˈc=0.8 ta •0ćˈc=0.6 for area prone to frost, the value is set at 6 when unit leaves the factory. Defrosting entry temperature control -15 ”c×ta ć ˉĮ”-5ć defrosting time interval time interval between two defrosting cycles is 45 minutes. Defros...

  • Page 31

    Domestic air conditioner 5.2.6 system protection function 5.2.6.1 3 minutes stand-by time time interval between compressor shutdown and restart is set at 3 minutes to ensure that compressor will only restart after 3-minute shutdown and initial energization valves are turned on to adequate opening po...

  • Page 32

    Domestic air conditioner 5.2.6.4 outdoor temperature limit cooling: when outdoor temperature is lower than 23 , cooling operation will start, compressor ć frequency is limited to less than 50 hz, outdoor wind speed is forced at level 1. Heating: when outdoor temperature is higher than 18 , heating o...

  • Page 33

    Domestic air conditioner 5.3 function of main thermistor note: a:outdoor suction temperature sensor b: exhaust temperature sensor c: indoor heat-exchange sensor outdoor suction temperature sensor the outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system s...

  • Page 34

    Domestic air conditioner 5.4 value of thermistor 5.4.1 intdoor unit room sensor r25 =23k ȍ±3.5% ć b25 /50 =4200k±3% ć ć temp.( ć) max.(k ȍ) normal(kȍ) min.(kȍ) tolerance( ć) -30 568.8372 501.0746 440.8435 -1.97 1.75 -29 530.9600 468.6491 413.1441 -1.95 1.74 -28 495.8488 438.5314 387.3645 -1.93 1.72 ...

  • Page 35

    Domestic air conditioner 8 56.3905 53.1320 50.0006 -1.17 1.13 9 53.4631 50.4521 47.5523 -1.15 1.11 10 50.7048 47.9230 45.2384 -1.13 1.09 11 48.1049 45.5355 43.0505 -1.10 1.07 12 45.6534 43.2808 40.9813 -1.08 1.04 13 43.3410 41.1509 39.0236 -1.05 1.02 14 41.1592 39.1381 37.1708 -1.03 1.00 15 39.0998 ...

  • Page 36

    Domestic air conditioner 53 7.3580 6.8556 6.3797 -1.85 1.76 54 7.0796 6.5884 6.1237 -1.90 1.79 55 6.8131 6.3329 5.8793 -1.94 1.83 56 6.5581 6.0887 5.6459 -1.99 1.87 57 6.3140 5.8552 5.4230 -2.03 1.91 58 6.0802 5.6318 5.2100 -2.07 1.95 59 5.8563 5.4181 5.0065 -2.12 1.99 60 5.6417 5.2136 4.8120 -2.16 ...

  • Page 37

    Domestic air conditioner 97 1.6138 1.4347 1.2739 -4.02 3.61 98 1.5650 1.3900 1.2331 -4.08 3.66 99 1.5180 1.3470 1.1937 -4.13 3.70 100 1.4726 1.3054 1.1559 -4.19 3.75 101 1.4287 1.2654 1.1194 -4.24 3.80 102 1.3864 1.2268 1.0842 -4.30 3.84 103 1.3455 1.1895 1.0503 -4.36 3.89 104 1.3060 1.1535 1.0176 -...

  • Page 38

    Domestic air conditioner -14 66.3463 61.0123 56.0565 -1.64 1.52 -13 62.8755 57.9110 53.2905 -1.62 1.51 -12 59.6076 54.9866 50.6781 -1.60 1.49 -11 56.5296 52.2278 48.2099 -1.58 1.47 -10 53.6294 49.6244 45.8771 -1.56 1.46 -9 50.8956 47.1666 43.6714 -1.54 1.44 -8 48.3178 44.8454 41.5851 -1.51 1.42 -7 4...

  • Page 39

    Domestic air conditioner 31 8.1371 7.8428 7.5522 -0.95 0.93 32 7.8299 7.5377 7.2498 -0.98 0.97 33 7.5359 7.2461 6.9611 -1.02 1.00 34 7.2546 6.9673 6.6854 -1.06 1.04 35 6.9852 6.7008 6.4222 -1.10 1.07 36 6.7273 6.4459 6.1707 -1.13 1.11 37 6.4803 6.2021 5.9304 -1.17 1.14 38 6.2437 5.9687 5.7007 -1.21 ...

  • Page 40

    Domestic air conditioner 76 1.7434 1.6021 1.4710 -2.88 2.67 77 1.6913 1.5528 1.4243 -2.92 2.71 78 1.6409 1.5051 1.3794 -2.97 2.75 79 1.5923 1.4592 1.3360 -3.02 2.80 80 1.5454 1.4149 1.2942 -3.07 2.84 81 1.5000 1.3721 1.2540 -3.12 2.88 82 1.4562 1.3308 1.2151 -3.17 2.93 83 1.4139 1.2910 1.1776 -3.22 ...

  • Page 41

    Domestic air conditioner 5.4.2 outdoor unit ambient sensor, suction sensor, defrosting sensor r25 ć=10k¡f3% b25 ć/50ć=3700kf3% temp.( ć) max.(k ȍ) normal(kȍ) min.(kȍ) tolerance( ć) -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 -1.9...

  • Page 42

    Domestic air conditioner 10 20.0176 19.0621 18.1358 -1.11 1.07 11 19.1149 18.2270 17.3646 -1.08 1.05 12 18.2580 17.4331 16.6305 -1.06 1.03 13 17.4442 16.6782 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 14.574...

  • Page 43

    Domestic air conditioner 55 3.4195 3.2085 3.0079 -1.91 1.82 56 3.3060 3.0989 2.9021 -1.95 1.85 57 3.1969 2.9935 2.8005 -2.00 1.89 58 3.0919 2.8922 2.7029 -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 ...

  • Page 44

    Domestic air conditioner 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 0.579...

  • Page 45

    Domestic air conditioner discharging sensor r80 ć=50k¡f3% b25/80 ć=4450kf3% temp.(( ć)) max.(k ȍ) normal(kȍ) min.(kȍ) tolerance( ć) -30 14646.0505 12061.7438 9924.4999 -2.96 2.45 -29 13654.1707 11267.8730 9290.2526 -2.95 2.44 -28 12735.8378 10531.3695 8700.6388 -2.93 2.44 -27 11885.1336 9847.7240 81...

  • Page 46

    Domestic air conditioner 11 1171.0715 1038.0743 919.3533 -2.35 2.09 12 1109.4661 985.0146 873.7359 -2.33 2.08 13 1051.4226 934.9440 830.6210 -2.31 2.07 14 996.7169 887.6792 789.8583 -2.29 2.06 15 945.1404 843.0486 751.3077 -2.27 2.04 16 896.4981 800.8922 714.8380 -2.26 2.03 17 850.6086 761.0603 680....

  • Page 47

    Domestic air conditioner 56 134.8559 127.3081 120.0746 -1.42 1.36 57 129.2457 122.1630 115.3645 -1.40 1.34 58 123.8956 117.2504 110.8618 -1.37 1.32 59 118.7926 112.5589 106.5564 -1.35 1.30 60 113.9241 108.0776 102.4388 -1.32 1.28 61 109.2784 103.7961 98.5000 -1.30 1.26 62 104.8443 99.7046 94.7315 -1...

  • Page 48

    Domestic air conditioner 101 25.3290 24.0574 22.8291 -1.61 1.55 102 24.5311 23.2765 22.0662 -1.65 1.59 103 23.7620 22.5245 21.3323 -1.69 1.63 104 23.0205 21.8002 20.6261 -1.73 1.66 105 22.3055 21.1025 19.9465 -1.77 1.70 106 21.6159 20.4303 19.2924 -1.81 1.74 107 20.9508 19.7825 18.6626 -1.85 1.77 10...

  • Page 49

    ,qvwuxfwlrq 6\vwhp &rqiljxudwlrq 6\vwhp &rqiljxudwlrq $iwhu wkh lqvwdoodwlrq dqg whvw rshudwlrq ri wkh urrp dlu frqglwlrqhu kdyh ehhq frpsohwhg lw vkrxog eh rshudwhg dqg kdqgohg dv ghvfulehg ehorz (yhu\ xvhu zrxog olnh wr nqrz wkh fruuhfw phwkrg ri rshudwlrq ri wkh urrp dlu frqglwlrqhu wr fkhfn li l...

  • Page 50

    Outdoor unit loading of the battery 1 2 3 4 parts and functions indoor unit actual inlet grille may vary from the one shown in the manual according to the product purchased outlet inlet connecting piping and electrical wiring drain hose remote controller remove the battery cover; load the batteries ...

  • Page 51

    Operation air flow di auto cool dry fan heat 2.Select operation mode press fan button. For each press, fan speed changes as follows: press mode button. For each press, operation mode changes as follows: remote controller: remote controller: select a desired temperature. 4.Fan speed selection air con...

  • Page 52

    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. Note to the power failure resume: press the sleep button ten times in five seconds and enter this function after hearing four sounds...

  • Page 53

    Operation health airflow 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 controller: blank timer on timer off timer ...

  • Page 54

    Maintenance for smart use of the air conditioner 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 block the air inlet or outle...

  • Page 55

    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 warning please call sales/service shop for the installation. Do not attempt to install the air cond...

  • Page 56

    Trouble shooting before asking for service, check the following first. Normal performance inspection noise is heard phenomenon cause or check points the system does not restart immediately. Smells are generated. Mist or steam are blown out. Multiple check poor cooling when unit is stopped, it won't ...

  • Page 57

    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 equipment operation. 2.When a signal tr...

  • Page 58

    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 page .78 indoor malfunction e1 room temperature sensor failure page .69 e2...

  • Page 59

    Domestic air conditioner 7.3.1thermistor or related abnormality (indoor unit) indoor display e1: room temperature sensor failure e2: heat-exchange sensor failure method of the temperatures detected by the thermistors are used to determine thermistor errors malfunction detection malfunction when the ...

  • Page 60

    Domestic air conditioner 7.3.2 indoor fan motor malfunction indoor display e14 method ofthe rotation speed detected by the hall ic during fan motor operation is used to determine malfunctionabnormal fan motor operation detection malfunctionwhen the detected rotation feedback singal don’t receiced in...

  • Page 61

    Domestic air conditioner does fan rotate smoothly? No yes turn power on and operate fan does it rotate? No yes turn off power supply and disconnect fan motor connector,then turn power on check output of fan motor connector i s m o t o r p o w e r voltage d c 3 1 0 v no yes replace indoor unit pcb re...

  • Page 62

    Domestic air conditioner 7.3.3 ipm protection outdoor display led1 flash 2 times: indoor display f1 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 current decision Ƶ the c...

  • Page 63

    Domestic air conditioner tester) normal resistance several k Ÿ to several mŸ (и) unacceptable resistance short (0 Ÿ) or open 7.3.4 the ipm and outdoor pcb don’t communicate or related abnormality outdoor display led1 flash 4 times indoor display f3 method of communication is detected by checking the...

  • Page 64

    Domestic air conditioner 7.3.5 thermistor or related abnormality(outdoor unit) frost-removing temperature sensor failure indoor display: f21 outdoor display: led1 flash 10 times: exhaust temperature sensor failure indoor display: f25 outdoor display: led1 flash 13 times: ambient temperature sensor f...

  • Page 65

    Domestic air conditioner 7.3.6 overheat protection for exhaust temperature indoor display f4 outdoor display led1 flash 8 times method of the exhaust temperature control is checked with the temperature being detected malfunction by the exhaust pipe thermistor detection malfunction when the compresso...

  • Page 66

    Domestic air conditioner yes no 7.3.7 the eeprom abnormality (indoor or outdoor unit) indoor display e4: ˖indoor eeprom error f12 ˖outdoor eeprom error 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...

  • Page 67

    Domestic air conditioner 7.3.8 communication error between the indoor and outdoor units indoor display e7 ˗ outdoor: display ˖ led1 flash 15 times method of the date received from the another unit in indoor unit-outdoor unit signal transmission is malfunction checked whether is normal detection malf...

  • Page 68

    Domestic air conditioner ˄a˅ no yes yes check the status of led1 on the indoor mainboard. If the led1 blinks no if the voltage is of a constant value of 0v dcto5v dc yes measure the voltage between jumpers 3 and 4 of ic8 on the indoor mainboard with a multimeter. No the outdoor mainboard is damaged;...

  • Page 69

    7.3.9 power supply over or under voltagve fault indoor display f19 outdoor display: led1 flash 6 times method of an abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfunction detection malfunction an voltage signal is fed from the voltage detection cir...

  • Page 70

    7.3.10 loop of the station detect error outdoor display led1 flash 18 times indoor display f11 led1 flash 19 times indoor display f28 method of the position of the compressor rotor can not detected normally malfunction detection malfunction when the the wiring of compressor is wrong or the connectio...

  • Page 71

    Drawing for the installation of indoor and outdoor units necessary tools for installation driver ƽ torque wrench ƽ (17mm,22mm,26mm) nipper ƽ reamer ƽ hacksaw ƽ pipe cutter ƽ gas leakage detector or ƽ soap-and-water solution hole core drill ƽ flaring tool ƽ spanner(17,19 and 26mm) ƽ knife ƽ measuring...

  • Page 72

    Indoor unit fix to side bar and lintel a mounting bar, which is separately sold, and then ƽ fasten the plate to the ¿xed mounting bar. Refer to the previous article, “ when the mounting plate is ƽ position of wall hole. Make a hole of 60 mm in diameter, slightly descending to outside the wall. ƽ ins...

  • Page 73

    1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar quali ¿ed person. The type of connecting wire is h05rn-f or h07rn-f. 2. If the fuse on pc board is broken please change it with the type of t. 3.15a/250v. 3. The wiring method should be in lin...

  • Page 74

    Open no gas leakage? 5. Detach the charge hose 6. From the service port, open 2-way valve and 3-way. Turn the valve rod anticlockwiseuntil hitting lightly. In case of gas leakage, tighten parts of pipe connection. If leakage stops, then proceed 6. Steps if it does not stop gas leakage, discharge who...

  • Page 75

    Removal procedure 9. Removal procedure 9.1.1 removal of front panel procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. S t n i o p e r u d e c o r p p e t s 1. Features 2. Remove the front panel 1 hold the front panel by the tabs on t...

  • Page 76

    Removal procedure s t n i o p e r u d e c o r p p e t s 3 pull the front panel out horizontally and remove it. +6812/vhj(db) 73.

  • Page 77

    Removal procedure 9.1.2 removal of air filter s t n i o p e r u d e c o r p p e t s upwards slightly and then pull it out downwards. Insert the air when installing. When installing, insert 2 hooks of the +6812/vhj(db) 74.

  • Page 78

    Removal procedure 9.1.3 removal of the blade s t n i o p e r u d e c o r p p e t s release the marked hooks. Pull out and remove the blade. Insert the air when installing. When installing, insert 2 hooks of the +6812/vhj(db) 75.

  • Page 79

    Removal procedure 9.1.4 removal of front case s t n i o p e r u d e c o r p p e t s 1 release the screw covers 2 loosen the 2 +6812/vhj(db) 76.

  • Page 80

    Removal procedure s t n i o p e r u d e c o r p p e t s 3 loosen the marked hooks. 4 pull out the front case. +6812/vhj(db) 77.

  • Page 81

    Removal procedure 9.1.5 removal of vertical blades and display board s t n i o p e r u d e c o r p p e t s 1 pull out the vertical blades. 2 screws,and remove the display board. 3 loosen the screw of the drip proof plate. Lift and remove the electrical box. +6812/vhj(db) 78.

  • Page 82

    Removal procedure 9.1.6 removal of fan drain pan and electrical box s t n i o p e r u d e c o r p p e t s 1 loosen the 2 screws. 2 pull out the drain pan. 3 loosen the screw of the drip proof plate. Lift and remove the electrical box. Discharge the static electricity from your body before touching t...

  • Page 83

    Removal procedure 9.1.7 removal of fan motor and heat exchanger s t n i o p e r u d e c o r p p e t s 1. Remove the right side plate. 1 loosen the 2 screws. 2 remove the 3 lift up the evaporator be careful not to evaporator. 3. Remove the fan. 1 loosen the 2 screws. 12/ vhj(db) 80 you can detach the...

  • Page 84

    Removal procedure s t n i o p e r u d e c o r p p e t s 2 lift up the right part of the fan motor and slide it to the rightward to remove. 3 lift up the right part of the fan and remove it +6812/vhj(db) 81.

  • Page 85

    Procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step procedure points 1. Remove the front panel. Start the removal procedure of front grille when the panels are closed. Slide the front panel side to side to release each axis. When ...

  • Page 86

    1. Lift an air filter upwards slightly and then pull it out downwards. Insert the air filters along grooves when installing. When installing, insert 2 hooks of the air filter completely. Step procedure points removal procedure 9.2.2 removal of air filter +6812/vhj(db) 83.

  • Page 87

    9.2.3 removal of horizontal blade and front grille procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step procedure points 1. Remove the horizontal blade. The horizontal blade is single. Installation procedure 1. Since key pattern ho...

  • Page 88

    1 release the marked four hooks. When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught prop e rly. Step procedure points removal procedure loosen the marked five screws 2 +6812/vhj(db) 85.

  • Page 89

    9.2.4 removal of drain pan procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step procedure points remove the front grille. Remove the assembly of the reduction motor. 1. Remove the drain pan. 1 loosen the marked screws under the scr...

  • Page 90

    9.2.5 . Removal of vertical blades and swing motor procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step procedure points 2 push the hooks on the removal procedure back of the vertical blades and remove. Loosen the marked 1 screws +...

  • Page 91

    9.2.6 removal of electrical box procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step procedure points remove the front grille. Discharge the static electricity from your body before touching the electrical parts like signal receive...

  • Page 92

    Procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step procedure points you can detach the indoor unit without removing the assembly of the outlet grille. Caution if gas leaks, repair the spot of leaking, then collect all refrigerant...

  • Page 93

    Procedure warning be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step procedure points 1 loosen the screws. 2 remove the right side plate. Removal procedure 9.2.8 removal of heat exchanger +6812/vhj(db) 90

  • Page 94

    9.3.1 removal of outdoor panel 9.3 for 12/18k outdoor unit removal procedure hsu12/18vhj(db) 91.

  • Page 95

    Loosen the top panel screws 1 2 lift the top panel hsu12/18vhj(db) removal procedure 92.

  • Page 96

    Domestic air conditioner removal procedure loosen the csrews and pull the panel hsu12/18vhj(db) 93.

  • Page 97

    9.3.2 removal of electrical box hsu12/18vhj(db) removal procedure 94.

  • Page 98

    9.3.3 removal of fan and fan motor hsu12/18vhj(db) removal procedure 95.

  • Page 99

    2 loosen the fixing screws and remove the motor hsu12/18vhj(db) removal procedure 96.

  • Page 100

    9.3.4 removal of fan motor bracket and partition hsu12/18vhj(db) removal procedure 97.

  • Page 101

    And remove the reactor loosen the screw hsu12/18vhj(db) removal procedure 98.

  • Page 102

    Loosen the marked screws and pull out the backgurd 9.3.5 removal of computor and heat exchanger hsu12/18vhj(db) removal procedure 99.

  • Page 103

    4 remove the compre -ssor and pipe assay 5 remove the conden -ser hsu12/18vhj(db) removal procedure 100

  • Page 104

    $sshqgl[ $sshqgl[ 3lslqj'ldjudpv +689+-'% 101.

  • Page 105

    10.2 wiring diagrams 10.2.1. Indoorunit for12k 1 / & receiver display 'rwwhgolqhiudph lvrswlrqdo $77(17,21 %5%52:1 ::+,7( 55(' %%/$&. %/%/8( appendix hsu12/18vhj(db) 102.

  • Page 106

    For18k ,1'22581,7:,5,1*',$*5$0 emergency switch cn48 cn32 cn11 cn1 piping temp.Sensor ambient temp.Sensor receiver display cn32 receiver display ::+,7( 55(' %%/$&. %/%/8( louver motor 72287'22581,7 y/g con2 con1 con7 t 3 .15a/ 250v ac fu s e w r b con8 con6 r w y/g ion generator appendix hsu12/18vhj...

  • Page 107

    10.2.2.Outdoor unit for12k %˖%/$&. %/˖%/8( 5˖5(' :˖:+,7( : 9 8 % : 5 5 % : cn13 cn10 cn16 am bien t s u c t ion bl bl cn20 cn15 cn14 pe cn22 cn1 cn5 cn6 cn7 cn26 cn24 cn10 %/ cn19 cn18 cn17 cn1 cn2 cn4 25 cn23 cn11 cn4cn3cn2 cn3 cn9 cn8 cn9 cn8 % : ac-l ac-n ac-l ac-n 287'225:,5,1*',$*5$0 :$51,1* &$...

  • Page 108

    For18k %˖%/$&. %/˖%/8( 5˖5(' :˖:+,7( : 9 8 % : 5 5 % : cn13 cn10 cn16 am bi e n t suc t io n bl bl cn20 cn15 cn14 pe cn22 cn1 cn5 cn6 cn7 cn26 cn24 cn10 %/ cn19 cn18 cn17 cn1 cn2 cn4 25 cn23 cn11 cn4cn3cn2 cn3 cn9 cn8 cn9 cn8 % : ac-l ac-n ac-l ac-n 287'225:,5,1*',$*5$0 :$51,1* &$87,21 '217728&+&$3$...

  • Page 109

    10.3. Circuit diagrams 10.3.1. Indoorunit for12k appendix hsu12/18vhj(db) 106.

  • Page 110

    For18k a b c d r74 2k r15 10k r55 10k c13 0.1uf p1 2sa1037ak +5v e10 4.7uf-50v e6 4.7uf-50v 1 2 3 4 cn1 r26 1k r29 1k r27 20k-±1% r28 3.3k-±1% c24 0.01uf c23 0.01uf r41 10k 1 2 jp1 tjc8-02 +5v r17 1k c4 0.1uf r30 1m r25 4.7k 1 2 cn36 r54 10k +12v c25 0.01uf +5v n4 ss8050lt1 n3 ss8050lt1 r52 10k r50 ...

  • Page 111

    1 2 3 4 a b c d 4 3 2 1 d c b a +12v +5v ( 1000uf-35v-105 ć ( 22uf -25v-105 ć 5 10 ȍ-1/4w 17& sck084r72 5 1.5k-1/4w ( 100uf -450v -105 ć 5 330k-2w 5 10 ȍ-1/4w 5 27 ȍ -1/4w 5 47k-2w 5 10 ȍ-1/4w ( 4. 7uf -50v-105 ć ( 10uf-25v-105 ć +15v vs & 0.1uf & 0.1uf c44 4. 7nf -275v a c 1 6 2 3 5 4 7 t1 bck-6-fe...

  • Page 112

    10.3.2.Outdoorunit for12k module board circuit diagrams c0 0 9 471 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 ic...

  • Page 113

    1 2 3 4 a b c d 4 3 2 1 d c b a vin 1 gnd 2 vout 3 ic4 l7805cv c9 104/50v e8 100u/16v r29 47 r19 47 c6 104/50v ic3 tl431c c3 102/100v l3 20uh/1a zd1 in5948b e5 470u/25v e6 100u/16v e7 470u/25v e3 22u/25v cy9 222/250vac d7 mbr1100\sb1100 c2 102/100v r18 47 c7 104/50v r22 1k/0.5w c8 104/50v +5v +12v e...

  • Page 114

    For18k module board circuit diagrams c0 0 9 47 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 ic1 sh7046 ic8 sgh40...

  • Page 115

    1 2 3 4 a b c d 4 3 2 1 d c b a vin 1 gnd 2 vout 3 ic4 l7805cv c9 104/50v e8 100u/16v r29 47 r19 47 c6 104/50v ic3 tl431c c3 102/100v l3 20uh/1a zd1 in5948b e5 470u/25v e6 100u/16v e7 470u/25v e3 22u/25v cy9 222/250vac d7 mbr1100\sb1100 c2 102/100v r18 47 c7 104/50v r22 1k/0.5w c8 104/50v +5v +12v e...

  • Page 116

    /lx0lqj :x+rqjmlq 6xq4ldqj +689+-'% :x+rqjmlq 6xq4ldqj +689+-'%.