Haier EA Series Service Manual
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Haier EA Series Service Manual

Haier EA Series Service Manual

Wall mounted type, dc inverter
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SERVICE MANUAL
Order No.AC1101S020V0
Wall mounted Type
DC Inverter EA-Series
Model No. HSU09VHJ(DB)
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting 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
©(Qingdao Haier Air Conditioner General corp.,Ltd)
All right reserved .Unauthorized copying and distribution is a violation of law
Haier Group

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  • Page 1 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 ©(Qingdao Haier Air Conditioner General corp.,Ltd) All right reserved .Unauthorized copying and distribution is a violation of law...
  • Page 2 HSU09VHJ(DB)-SM of indoor unit Main functions and control specifications of outdoor unit Function of main thermistor Value of thermistor Service Diagnosis Caution for diagnosis 3 Error codes and description indoor display For indoor unit For outdoor unit 10. Wiring Diagrams ..................91 10.1 Indoor Unit ....................91 10.2 Outdoor Unit ....................92 11.

  • Page 3: Safety Cautions

    Introduction HSU09VHJ(DB)-SM 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 injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.

  • Page 4: Cautions Regarding Products After Repair

    HSU09VHJ(DB)-SM Introduction 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.
  • Page 5 HSU09VHJ(DB)-SM Introduction 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 power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.

  • Page 6: Inspection After Repair

    HSU09VHJ(DB)-SM Introduction 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 and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 7 HSU09VHJ(DB)-SM...
  • Page 8 HSU09VHJ(DB)
  • Page 9 HSU09VHJ(DB)-SM HSU09VHJ(DB) 2.64(0.88-3.22) 2.78(0.88-3.52) 9495(3165-11605) 10023(3165-12660) 2268(756-2772) 2394(756-3024) pints/hr 2.65 690( 180-1400 770(250-1400) 16.8 SEER/HSPF inches inches inches feet 49 3/16 feet 32 13/16 feet 22 15/16 OZ/inches 0.018 0.15 0.15 inches 36 15/16 x 7 3/8 x 10 7/16 inches 33 x 10 13/16 x 13 20.72...
  • Page 10 HSU09VHJ(DB)-SM Rotary Compressor DA89X1C-20FZ ESTER OIL VG74 pints 0.65 R410a 33.5 31.6 31.6 1115 1115 inches 30 11/16 x9 5/8 x 21 1/4 inches 36 8/5 x13 3/8 x 24 3/16 70.99 77.16 80 F 67 F 70 F /60° FWB 16 2/5 feet 95 F 75 F...

  • Page 11: Indoor Unit Connectors

    HSU09VHJ DB -SM Connector Wiring Diagram 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 feedback 5)CH1 Connector for power L wire 6)CON2 Connector for power N wire 7) CON7 Connector for communicate wire...
  • Page 12 HSU09VHJ DB -SM Connector Wiring Diagram PCB(1) CN26 CON12 CN27 CN32 CN11 CON2 CN30 CON8 CN31 Domestic Air Conditioner...

  • Page 13: Outdoor Unit

    HSU09VHJ DB -SM Connector Wiring Diagram 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 Connector for four way valve coil 7) CN17,CN18,CN19,CN20 Connector for thermistors...
  • Page 14 HSU09VHJ DB -SM Connector Wiring Diagram PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 CN25 Domestic Air Conditioner...
  • Page 15 HSU09VHJ DB -SM Connector Wiring Diagram PCB(2) CN11 CN10 Domestic Air Conditioner...

  • Page 16: Funcitions And Control

    This specification use for HSU18VHJ DB frequency conversion air condition are manufactured by Haier air condition parent company. "Setting value" (express in parameter) in this specification means is a parameter that is stored in EEPROM. Refer to [EEPROM parameter table].

  • Page 17: Main Functions

    HSU09VHJ DB -SM Funcitions and Control 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 Limited frequency variables...

  • Page 18: Special Functions

    HSU09VHJ DB -SM Funcitions and Control 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 running starts, the wind volume is weak 5.1.2.3 Dehumidification running Under the dehumidification mode the fan motor stops as the compressor stops...

  • Page 19: Air Cleaning

    HSU09VHJ DB -SM Funcitions and Control When in automatic mode, there are powerful and silent functions for your choice. When the main unit 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.

  • Page 20: Sleeping Function

    HSU09VHJ DB -SM Funcitions and Control 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 Sleep t(hour) b.After setting the sleeping function, the heating mode will run as per the following rules: T( ) 1 hour 1 hour 3hours...

  • Page 21: Rated Operation

    HSU09VHJ DB -SM Funcitions and Control memoried Press the sleep key for 10 times with 2 beeps in 7 seconds to exit. 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.

  • Page 22: Outdoor Unit Operation Frequency And Control

    HSU09VHJ DB -SM Funcitions and Control 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 Compressor Operation Frequency Range Compressor Operation Frequency Range: Outdoor Temperature...

  • Page 23: Outdoor Fan Control

    HSU09VHJ DB -SM Funcitions and Control 5.2.2 Outdoor fan control Compressor startup within 3min ,outdoor fan speed control as follows: Outdoor Temperature Cooling/ Dehumidification Heating fter compressor runs 3min ,outdoor fan speed control as follows: Cooling/ Dehumidification: Compressor Operation Frequency Hz Heating: Compressor Operation Frequency Hz Compressor shutdown and outdoor fan residual heat blow process...

  • Page 24: Ptc Output Control

    HSU09VHJ DB -SM Funcitions and Control TE C×TA Among which: C:TA 0 C=0.8 TA 0 C=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 Defrosting Time Interval time interval between two defrosting cycles is 45 minutes.

  • Page 25: System Protection Function

    HSU09VHJ DB -SM Funcitions and Control 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 position after being fully turned off.

  • Page 26: Outdoor Temperature Limit

    HSU09VHJ DB -SM Funcitions and Control 5.2.6.4 Outdoor Temperature Limit Cooling: When outdoor temperature is lower than 23 , cooling operation will start, compressor 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 operation will start, compressor frequency is limited to less than 53 HZ, outdoor wind speed is forced at level 1.

  • Page 27: Function Of Main Thermistor

    HSU09VHJ DB -SM Funcitions and Control 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 sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.

  • Page 28: Value Of Thermistor

    HSU09VHJ DB -SM Funcitions and Control 5.4 Value of Thermistor 5.4.1 intdoor Unit Room sensor R25 =23K ±3.5% B25 /50 =4200K±3% Temp.( ) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 568.8372 501.0746 440.8435 -1.97 1.75 530.9600 468.6491 413.1441 -1.95 1.74 495.8488 438.5314...
  • Page 29 HSU09VHJ DB -SM Funcitions and Control 62.7992 58.9853 55.3351 -1.22 1.17 59.4984 55.9729 52.5917 -1.20 1.15 56.3905 53.1320 50.0006 -1.17 1.13 53.4631 50.4521 47.5523 -1.15 1.11 50.7048 47.9230 45.2384 -1.13 1.09 48.1049 45.5355 43.0505 -1.10 1.07 45.6534 43.2808 40.9813 -1.08 1.04 43.3410 41.1509...
  • Page 30 HSU09VHJ DB -SM Funcitions and Control 8.2713 7.7345 7.2237 -1.73 1.64 7.9531 7.4280 6.9291 -1.77 1.68 7.6489 7.1353 6.6480 -1.81 1.72 7.3580 6.8556 6.3797 -1.85 1.76 7.0796 6.5884 6.1237 -1.90 1.79 6.8131 6.3329 5.8793 -1.94 1.83 6.5581 6.0887 5.6459 -1.99 1.87 6.3140 5.8552...
  • Page 31 HSU09VHJ DB -SM Funcitions and Control 1.8856 1.6844 1.5028 -3.75 3.38 1.8272 1.6307 1.4535 -3.80 3.43 1.7709 1.5789 1.4060 -3.86 3.47 1.7166 1.5291 1.3603 -3.91 3.52 1.6643 1.4810 1.3163 -3.97 3.56 1.6138 1.4347 1.2739 -4.02 3.61 1.5650 1.3900 1.2331 -4.08 3.66 1.5180 1.3470...
  • Page 32 HSU09VHJ DB -SM Funcitions and Control 97.6556 88.7989 80.6728 -1.78 1.63 92.3028 84.0695 76.5017 -1.76 1.62 87.2775 79.6222 72.5729 -1.74 1.60 82.5577 75.4384 68.8710 -1.72 1.59 78.1230 71.5010 65.3815 -1.70 1.57 73.9543 67.7939 62.0907 -1.68 1.55 70.0342 64.3023 58.9863 -1.66 1.54 66.3463 61.0123...
  • Page 33 HSU09VHJ DB -SM Funcitions and Control 11.2172 10.8634 10.5114 -0.78 0.78 10.7475 10.4216 10.0964 -0.75 0.75 10.3000 10.0000 9.7000 -0.75 0.75 9.8975 9.5974 9.2980 -0.76 0.76 9.5129 9.2132 8.9148 -0.80 0.80 9.1454 8.8465 8.5496 -0.84 0.83 8.7942 8.4964 8.2013 -0.87 0.86 8.4583 8.1621...
  • Page 34 HSU09VHJ DB -SM Funcitions and Control 2.3068 2.1383 1.9803 -2.45 2.29 2.2347 2.0695 1.9147 -2.49 2.34 2.1652 2.0032 1.8516 -2.54 2.38 2.0983 1.9393 1.7908 -2.59 2.42 2.0337 1.8778 1.7324 -2.63 2.46 1.9714 1.8186 1.6761 -2.68 2.50 1.9113 1.7614 1.6219 -2.73 2.54 1.8533 1.7064...

  • Page 35: Outdoor Unit

    HSU09VHJ DB -SM Funcitions and Control 0.6528 0.5820 0.5183 -4.74 4.26 0.6361 0.5667 0.5043 -4.80 4.31 0.6200 0.5518 0.4907 -4.86 4.36 0.6043 0.5374 0.4775 -4.92 4.41 0.5891 0.5235 0.4648 -4.98 4.45 0.5743 0.5100 0.4524 -5.04 4.50 0.5600 0.4968 0.4404 -5.10 4.55 0.5460 0.4841...
  • Page 36 HSU09VHJ DB -SM Funcitions and Control 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31 33.8936 31.7844 29.7796 -1.36 1.29 32.2608 30.2968 28.4267 -1.34 1.28 30.7162 28.8875 27.1431 -1.32 1.26 29.2545 27.5519 25.9250 -1.29 1.24 27.8708 26.2858 24.7686 -1.27 1.22 26.5605 25.0851...
  • Page 37 HSU09VHJ DB -SM Funcitions and Control 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 5.2001 4.9430 4.6944 -1.41 1.36 5.0163 4.7630 4.5185 -1.45 1.40 4.8400 4.5905 4.3500 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47 4.5083 4.2666 4.0342 -1.57 1.51 4.3524 4.1145...
  • Page 38 HSU09VHJ DB -SM Funcitions and Control 1.3335 1.2153 1.1066 -3.32 3.06 1.2953 1.1794 1.0730 -3.38 3.10 1.2583 1.1448 1.0405 -3.43 3.15 1.2226 1.1113 1.0092 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33 1.0910 0.9882...
  • Page 39 HSU09VHJ DB -SM Funcitions and Control Discharging Sensor R80 =50K B25/80 =4450K 3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 14646.0505 12061.7438 9924.4999 -2.96 2.45 13654.1707 11267.8730 9290.2526 -2.95 2.44 12735.8378 10531.3695 8700.6388 -2.93 2.44 11885.1336 9847.7240 8152.2338 -2.92 2.43...
  • Page 40 HSU09VHJ DB -SM Funcitions and Control 1236.4792 1094.3200 967.6334 -2.36 2.11 1171.0715 1038.0743 919.3533 -2.35 2.09 1109.4661 985.0146 873.7359 -2.33 2.08 1051.4226 934.9440 830.6210 -2.31 2.07 996.7169 887.6792 789.8583 -2.29 2.06 945.1404 843.0486 751.3077 -2.27 2.04 896.4981 800.8922 714.8380 -2.26 2.03 850.6086 761.0603...
  • Page 41 HSU09VHJ DB -SM Funcitions and Control 146.9136 138.3454 130.1598 -1.47 1.40 140.7403 132.6980 125.0027 -1.44 1.38 134.8559 127.3081 120.0746 -1.42 1.36 129.2457 122.1630 115.3645 -1.40 1.34 123.8956 117.2504 110.8618 -1.37 1.32 118.7926 112.5589 106.5564 -1.35 1.30 113.9241 108.0776 102.4388 -1.32 1.28 109.2784 103.7961...
  • Page 42 HSU09VHJ DB -SM Funcitions and Control 27.9078 26.5864 25.3048 -1.49 1.44 27.0160 25.7110 24.4470 -1.53 1.48 26.1569 24.8685 23.6222 -1.57 1.52 25.3290 24.0574 22.8291 -1.61 1.55 24.5311 23.2765 22.0662 -1.65 1.59 23.7620 22.5245 21.3323 -1.69 1.63 23.0205 21.8002 20.6261 -1.73 1.66 22.3055 21.1025...
  • Page 43 HSU09VHJ(DB)-SM...

  • Page 44: Parts And Functions

    HSU09VHJ(DB)-SM system configration Parts and Functions Remote controller Indoor Unit 8. HEALTH button 9. ON/OFF button 10. TIMER ON display 11. FAN SPEED display Inlet grille Air Purifying Filter Inlet AUTO 12. LOCK display 13. SWING UP/DOWN display Emergency Outlet 14.

  • Page 45: Test Operation

    system configration HSU09VHJ(D B)-SM Operation Emergency operation and test operation Clock set Press CLOCK button, "AM" or "PM" flashes. Emergency Operation: Press to set correct time. Each press will increase or decrease 1min. If the button is kept pressed,time will Use this operation only when the change quickly.

  • Page 46: Sleep Operation

    system configration HSU09VHJ(D B)-SM Operation Sleep Operation In AUTO mode The unit operates in corresponding sleep Before going to bed, you can simply press the mode adapted to the automatically selected SLEEP button and unit will operate in SLEEP operation mode. mode and bring you a sound sleep.
  • Page 47 HSU09VHJ(DB)-SM system configration Operation Timer On/Off On-Off Operation IMPORTANT INFORMATION REGA- Set clock correctly before starting TIMER operation. RDING THE REFRIGERANT USED 1.After unit starts, select your desired operation mode. 2.Press TIMER button to change TIMER mode. Every Contains fluorinated greenhouse gases time the button is pressed, display changes as follows: covered by the Kyoto Protocol Remote controller:...

  • Page 48: Maintenance

    system configration HSU09VHJ(DB)-SM Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper Wipe the air conditioner by using a soft and temperature dry cloth.For serious stains,use a neutral detergent diluted with water.Wring the water Do not use water wipe the controller with a out of the cloth before wiping.then wipe off...
  • Page 49 HSU09VHJ(DB)-SM system configration Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found, Use an exclusive immediately stop the operation button and power source...

  • Page 50: Troubleshooting

    HSU09VHJ(DB)-SM system configration Trouble shooting Cautions grille of the air Do not obstruct or cover the ventilation Before asking for service, check the following first. conditoner.Do not put fingers or any other things into the inlet/outlet and swing louver. Do not allow children to play with the air conditioner .In no Phenomenon Cause or check points...

  • Page 51: Service Diagnosis

    HSU09VHJ DB -SM Service Diagnosis 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.

  • Page 52: Error Codes And Description Indoor Display

    HSU09VHJ DB -SM Service Diagnosis 7.3.Error Codes and Description indoor display Code indication Reference Outdoor Description Page indoor (LED1 flash times) Indoorand Outdoor Communication fault between indoor and Page .59 outdoor units Room temperature sensor failure Page .51 Indoor Malfunction Heat-exchange sensor failure Page .51 Indoor EEPROM error...
  • Page 53 HSU09VHJ DB -SM Service Diagnosis 7.3.1Thermistor or Related Abnormality (indoor unit) E1: Room temperature sensor failure Indoor Display E2: Heat-exchange sensor failure Method of the temperatures detected by the thermistors are used to determine thermistor errors Malfunction Detection Malfunction when the thermistor input is more than 4.92V or less than 0.08V during compressor Decision operation.

  • Page 54: Indoor Fan Motor Malfunction

    HSU09VHJ DB -SM Service Diagnosis 7.3.2 Indoor fan motor malfunction Indoor Display 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 singal don’t receiced in 2 minutes Decision Conditions Supposed Causes...

  • Page 55: Ipm Protection

    HSU09VHJ DB -SM Service Diagnosis Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan motor connector,then turn power ON Does it rotate? Check output of fan motor connector I s m o t o r p o w e r voltage DC310V Replace indoor unit Stop fan motor...
  • Page 56 HSU09VHJ DB -SM Service Diagnosis Method of IPM protection is detected by checking the compressor running condition and so on. Malfunction Detection Malfunction The system leads to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions circuit component of IPM is broken and led to IPM protection Supposed...

  • Page 57: Thermistor Or Related Abnormality (Outdoor Unit)

    HSU09VHJ DB -SM Service Diagnosis 7. .4 The IPM and outdoor PCB don’t communicate or Related Abnormality outdoor display LED1 flash 4 times Indoor Display Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault...
  • Page 58 HSU09VHJ DB -SM Service Diagnosis Indoor display: outdoor display: LED1 flash 10 times: Exhaust temperature sensor failure Indoor display: outdoor display: LED1 flash 13 times: Ambient temperature sensor failure Indoor display: outdoor display: LED1 flash 12 times: Suck temperature sensor failure Indoor display: outdoor display: LED1 flash 11times:...

  • Page 59: Overheat Protection For Exhaust Temperature

    HSU09VHJ DB -SM Service Diagnosis 7.3.6 Overheat Protection For Exhaust Temperature Indoor display 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 compressor discharge temperature is above 117 Decision Conditions...
  • Page 60 HSU09VHJ DB -SM Service Diagnosis Pull out the exhaust sensor and measure its The sensor is damaged. Replace the sensor resistance standard temperatures with a new one. according to the resistance-temperature table The sensor is damaged. Replace the sensor the results deviate with a new one.
  • Page 61 HSU09VHJ DB -SM Service Diagnosis 7.3.8 Communication error between the indoor and outdoor units Indoor display 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 Malfunction When the date sent from the another unit cannot be received normally,or when the content...
  • Page 62 HSU09VHJ DB -SM Service Diagnosis Check the status of LED1 on the indoor mainboard. If the LED1 blinks measure voltage between Jumpers 3 and 4 of IC8 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
  • Page 63 HSU09VHJ DB -SM Service Diagnosis 7.3.10 Power Supply Over or under voltagve fault Indoor display 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 circuit to the microcomputer Decision...

  • Page 64: Loop Of The Station Detect Error

    HSU09VHJ DB -SM Service Diagnosis 7.3.11 Loop of the station detect error Outdoor Display LED1 flash 18 times Indoor Display LED1 flash 19 times Indoor Display 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 connection is poor;...

  • Page 65: Over-Current Of The Compressor

    HSU09VHJ DB -SM Service Diagnosis 7.3.12 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 damaged Conditions power supply.
  • Page 66 HSU09VHJ DB -SM Service Diagnosis 7.3.13Fan Motor(DC Motor) or Related Abnormality Indoor Display LED1 flash 9 times 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 singal don’t receiced in 2 minutes...
  • Page 67 HSU09VHJ DB -SM Service Diagnosis Turn power supply and rotate fan by hand Does fan rotate Replace the motor smoothly? Turn power ON and operate fan Turn power supply disconnect motor connector,then turn power ON Does rotate? Check output of fan motor connector Is motor power voltage DC310V gengerated? Replace indoor unit PCB...

  • Page 68: Wiring Diagrams

    HSU09VHJ DB -SM Wiring Diagrams 10.Wiring Diagrams 10.1.INDOORUNIT RECEIVER DISPLAY Domestic Air Conditioner...

  • Page 69: Outdoor Unit

    HSU09VHJ DB -SM Wiring Diagrams 10.2.Outdoor unit CN9 CN8 AC-N AC-L CN11 CN10 CN26 CN22 CN24 CN23 MAIN CONTROL BOARD AC-N AC-L CN10 CN13 CN15 CN14 CN19 CN18 CN17 CN20 CN16 Remark the dotted parts are optional for different unit. Domestic Air Conditioner...

  • Page 70: Circuit Diagrams

    HSU09VHJ DB -SM Circuit Diagrams 11.Circuit Diagrams 11.1.INDOORUNIT Domestic Air Conditioner...
  • Page 71 HSU09VHJ DB -SM Circuit Diagrams 11.2.OUTDOORUNIT 11.2.1 module board Circuit Diagrams 5. 2MH/15A D207 FFA30U60DN PS21965-AT C406 AC -L C405 C404 SGH40N60UF 104/275V 104/275V 474/275V 680U/400V*2 R215 D25B X60B 0. 015/5W 0. 015/5W AC -N R214 9 10 11 12 13 14 15 16 17 R225 D206 C023...
  • Page 72 HSU09VHJ DB -SM Circuit Diagrams +12V L7805CV E22034 102/100V Vout MBR3100\ER302 470U/25V 100U/16V 104/50V 1K/0.5W 472/1KV 104/50V ER106 +5VD 104/275V MBR1100\SB1100 20UH/1A IN5948B 5.1K/1% 470U/25V 100U/16V 222/250VAC 220 220 R18 47 CN22 +15V R90 0 102/100V MUR115\MUR130\ER106 NCP1200P100 330/1W 470U/25V 104/50V 22U/25V 5.1K/1%...
  • Page 73 HSU09VHJ DB -SM Circuit Diagrams CN26 220K/2W 105/275VAC 680U/400V/450V 680U/400V/450V LED2 POWER CN24 Domestic Air Conditioner...
  • Page 74 HSU09VHJ-SM DC Inverter The series number H-heat pump Applicable voltage:V( 9000...
  • Page 75 HSU09VHJ(DB)-SM The end Sincere Forever Haier Group Li JingVheng Cui Xiaogao Yang Bifei +86 532 88936935 W Hongjin...
  • Page 76 © (Qingdao Haier Air Conditioner General corp.,Ltd) All right reserved .Unauthorized copying and distribution is a violation of law...
  • Page 77 HSU12/18VHJ(DB) of indoor unit Main functions and control specifications of outdoor unit Function of main thermistor Value of thermistor Service Diagnosis Caution for diagnosis 3 Error codes and description indoor display For 12K indoor unit For 18K indoor unit For 12/18K outdoor unit...
  • Page 78 VHJ(DB)

  • Page 79: Safety Cautions

    Introduction VHJ(DB) 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 injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.

  • Page 80: Cautions Regarding Products After Repair

    VHJ(DB) Introduction 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.
  • Page 81 VHJ(DB) Introduction 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 power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.

  • Page 82: Inspection After Repair

    VHJ(DB) Introduction 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 and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 83 VHJ(DB)
  • Page 85 HSU12/18VHJ(DB) HSU18VHJ(DB) HSU12VHJ(DB) 3.51(0.88-3.95) 3.95(0.88-4.25) 5.27(1.17-5.57) 5.57(1.17-6.00) 18000(4000-19000) 19000(4000-20500) 12000(3000-13500) 13500(3000-14500) 3018.6(756.8-3397) ) 4790.2(1006.2-5160) 3397(756.8-3655) 4532.2(1006.2-4790.2 pints/hr 3.52 2.82 1090(250-1450) 1190(250-1450) 1640(270-1900) 1650(270-1950) SEER/HSPF inches inches inches feet 82 1/50 49 1/5 feet 49 1/5 32 4/5 feet 32 4/5 32 4/5 0.018 OZ/Inches...
  • Page 86 HSU12/18VHJ(DB) Rotary Compressor Rotary Compressor DA89X1C-20FZ SNB130FGYM2 ESTER OIL VG74 FV50S pints 0.65 0.88 R410a R410a 42.33 35.27 31.6 31.6 31.6 31.6 1115 1115 1115 1115 1050 1090 inches 21 3/8 x 30 5/6 x 10 2/51 25 1/3 x 30 5/6 x10 2/51 inches 28 1/9 X 36 3/5 X 13 27/70 24 1/6 X 36 3/5 X 13 2/5...

  • Page 87: Indoor Unit Connectors

    HSU12/18VHJ(DB) 4.1 Indoor unit Connectors FOR 12K 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 feedback 5)CH1 Connector for power L wire 6)CON2 Connector for power N wire 7) CON7 Connector for communicate wire 8) CN30 Connector for transformer input...
  • Page 88 HSU12/18VHJ(DB) PCB(1) CN26 CON12 CN27 CN32 CN11 CON2 CN30 CON8 CN31 Domestic Air Conditioner...
  • Page 89 HSU12/18VHJ(DB) FOR 18K 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 display board 7) C0N6 C0N8 Connector for ions generator 8 C0N7 Connector for communicate between the indoor board and the outdoor...
  • Page 90 HSU12/18VHJ(DB) PCB(1) CN32 CON7 CN11 CN48 CON6 CON8 CON1 CON2 CN26 Domestic Air Conditioner...

  • Page 91: Outdoor Unit

    HSU12/18VHJ(DB) Outdoor unit FOR12K 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 valve coil 7) CN17 CN18 CN19 CN20 Connector for thermistors...
  • Page 92 HSU12/18VHJ(DB) PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 CN25 Domestic Air Conditioner...
  • Page 93 HSU12/18VHJ(DB) PCB(2) CN11 CN10 Domestic Air Conditioner...
  • Page 94 HSU12/18VHJ(DB) FOR 18K 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 valve coil 7) CN17 CN18 CN19 CN20 Connector for thermistors...
  • Page 95 HSU12/18VHJ(DB) PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 CN25 Domestic Air Conditioner...
  • Page 96 HSU12/18VHJ(DB) PCB(2) CN11 CN10 Domestic Air Conditioner...

  • Page 97: Funcitions And Control

    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 specification means is a parameter that is stored in EEPROM. Refer to [EEPROM parameter table].

  • Page 98: Main Functions

    HSU12/18VHJ(DB) 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 Limited frequency variables Medium wind volume FQLIMMD...

  • Page 99: Special Functions

    HSU12/18VHJ(DB) 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 running starts, the wind volume is weak 5.1.2.3 Dehumidification running Under the dehumidification mode the fan motor stops as the compressor stops...

  • Page 100: Air Cleaning

    HSU12/18VHJ(DB) 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 for wind-sending and moisture removing Powerful heating Change the set temperature.

  • Page 101: Sleeping Function

    HSU12/18VHJ(DB) 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 Sleep t(hour) b.After setting the sleeping function, the heating mode will run as per the following rules: T( ) 1 hour 1 hour 3hours...

  • Page 102: Rated Operation

    HSU12/18VHJ(DB) 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. Domestic Air Conditioner...

  • Page 103: Outdoor Unit Operation Frequency And Control

    HSU12/18VHJ(DB) 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 Compressor Operation Frequency Range Compressor Operation Frequency Range: Outdoor Temperature 4 18...

  • Page 104: Outdoor Fan Control

    HSU12/18VHJ(DB) 5.2.2 Outdoor fan control Compressor startup within 3min ,outdoor fan speed control as follows: Outdoor < Temperature Cooling/ Dehumidification Heating fter compressor runs 3min ,outdoor fan speed control as follows: Cooling/ Dehumidification: Compressor Operation Frequency Hz <25 Heating: Compressor Operation Frequency (Hz) <25 Compressor shutdown and outdoor fan residual heat blow process When compressor shuts down in cooling mode, outdoor fan automatically jumps to low speed and...

  • Page 105: Ptc Output Control

    HSU12/18VHJ(DB) TE C×TA Among which: C:TA 0 C=0.8 TA 0 C=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 Defrosting Time Interval time interval between two defrosting cycles is 45 minutes. Defrosting Operation When defrosting begins, compressor will stop for one minute, external fan is running and 50s later, four-way valve will be off.

  • Page 106: System Protection Function

    HSU12/18VHJ(DB) 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 position after being fully turned off.

  • Page 107: Outdoor Temperature Limit

    HSU12/18VHJ(DB) 5.2.6.4 Outdoor Temperature Limit Cooling: When outdoor temperature is lower than 23 , cooling operation will start, compressor 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 operation will start, compressor frequency is limited to less than 53 HZ, outdoor wind speed is forced at level 1.

  • Page 108: Function Of Main Thermistor

    HSU12/18VHJ(DB) 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 sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.

  • Page 109: Room Sensor

    HSU12/18VHJ(DB) 5.4 Value of Thermistor 5.4.1 intdoor Unit Room sensor R25 =23K ±3.5% B25 /50 =4200K±3% Temp.( ) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 568.8372 501.0746 440.8435 -1.97 1.75 530.9600 468.6491 413.1441 -1.95 1.74 495.8488 438.5314 387.3645 -1.93 1.72 463.2850 410.5433...
  • Page 110 HSU12/18VHJ(DB) 56.3905 53.1320 50.0006 -1.17 1.13 53.4631 50.4521 47.5523 -1.15 1.11 50.7048 47.9230 45.2384 -1.13 1.09 48.1049 45.5355 43.0505 -1.10 1.07 45.6534 43.2808 40.9813 -1.08 1.04 43.3410 41.1509 39.0236 -1.05 1.02 41.1592 39.1381 37.1708 -1.03 1.00 39.0998 37.2355 35.4167 -1.00 0.98 37.1553 35.4363...
  • Page 111 HSU12/18VHJ(DB) 7.3580 6.8556 6.3797 -1.85 1.76 7.0796 6.5884 6.1237 -1.90 1.79 6.8131 6.3329 5.8793 -1.94 1.83 6.5581 6.0887 5.6459 -1.99 1.87 6.3140 5.8552 5.4230 -2.03 1.91 6.0802 5.6318 5.2100 -2.07 1.95 5.8563 5.4181 5.0065 -2.12 1.99 5.6417 5.2136 4.8120 -2.16 2.03 5.4361 5.0178...
  • Page 112 HSU12/18VHJ(DB) 1.6138 1.4347 1.2739 -4.02 3.61 1.5650 1.3900 1.2331 -4.08 3.66 1.5180 1.3470 1.1937 -4.13 3.70 1.4726 1.3054 1.1559 -4.19 3.75 1.4287 1.2654 1.1194 -4.24 3.80 1.3864 1.2268 1.0842 -4.30 3.84 1.3455 1.1895 1.0503 -4.36 3.89 1.3060 1.1535 1.0176 -4.42 3.94 1.2679 1.1188...
  • Page 113 HSU12/18VHJ(DB) 66.3463 61.0123 56.0565 -1.64 1.52 62.8755 57.9110 53.2905 -1.62 1.51 59.6076 54.9866 50.6781 -1.60 1.49 56.5296 52.2278 48.2099 -1.58 1.47 53.6294 49.6244 45.8771 -1.56 1.46 50.8956 47.1666 43.6714 -1.54 1.44 48.3178 44.8454 41.5851 -1.51 1.42 45.8860 42.6525 39.6112 -1.49 1.40 43.5912 40.5800...
  • Page 114 HSU12/18VHJ(DB) 8.1371 7.8428 7.5522 -0.95 0.93 7.8299 7.5377 7.2498 -0.98 0.97 7.5359 7.2461 6.9611 -1.02 1.00 7.2546 6.9673 6.6854 -1.06 1.04 6.9852 6.7008 6.4222 -1.10 1.07 6.7273 6.4459 6.1707 -1.13 1.11 6.4803 6.2021 5.9304 -1.17 1.14 6.2437 5.9687 5.7007 -1.21 1.18 6.0170 5.7454...
  • Page 115 HSU12/18VHJ(DB) 1.7434 1.6021 1.4710 -2.88 2.67 1.6913 1.5528 1.4243 -2.92 2.71 1.6409 1.5051 1.3794 -2.97 2.75 1.5923 1.4592 1.3360 -3.02 2.80 1.5454 1.4149 1.2942 -3.07 2.84 1.5000 1.3721 1.2540 -3.12 2.88 1.4562 1.3308 1.2151 -3.17 2.93 1.4139 1.2910 1.1776 -3.22 2.97 1.3730 1.2525...

  • Page 116: Outdoor Unit

    HSU12/18VHJ(DB) 5.4.2 Outdoor Unit Ambient Sensor, Suction Sensor, Defrosting Sensor R25 =10K B25 /50 =3700K 3% Temp.( ) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 165.2170 147.9497 132.3678 -1.94 1.75 155.5754 139.5600 125.0806 -1.93 1.74 146.5609 131.7022 118.2434 -1.91 1.73 138.1285 124.3392...
  • Page 117 HSU12/18VHJ(DB) 20.0176 19.0621 18.1358 -1.11 1.07 19.1149 18.2270 17.3646 -1.08 1.05 18.2580 17.4331 16.6305 -1.06 1.03 17.4442 16.6782 15.9315 -1.03 1.01 16.6711 15.9601 15.2657 -1.01 0.99 15.9366 15.2770 14.6315 -0.98 0.96 15.2385 14.6268 14.0271 -0.96 0.94 14.5748 14.0079 13.4510 -0.93 0.92 13.9436 13.4185...
  • Page 118 HSU12/18VHJ(DB) 3.4195 3.2085 3.0079 -1.91 1.82 3.3060 3.0989 2.9021 -1.95 1.85 3.1969 2.9935 2.8005 -2.00 1.89 3.0919 2.8922 2.7029 -2.04 1.93 2.9909 2.7948 2.6092 -2.08 1.97 2.8936 2.7012 2.5193 -2.13 2.01 2.8000 2.6112 2.4328 -2.17 2.05 2.7099 2.5246 2.3498 -2.22 2.09 2.6232 2.4413...
  • Page 119 HSU12/18VHJ(DB) 0.8741 0.7863 0.7067 -4.12 3.74 0.8507 0.7646 0.6867 -4.18 3.78 0.8281 0.7436 0.6672 -4.23 3.83 0.8061 0.7233 0.6484 -4.29 3.88 0.7848 0.7036 0.6303 -4.34 3.92 0.7641 0.6845 0.6127 -4.40 3.97 0.7441 0.6661 0.5957 -4.46 4.02 0.7247 0.6482 0.5792 -4.51 4.07 0.7059 0.6308...
  • Page 120 HSU12/18VHJ(DB) Discharging Sensor R80 =50K B25/80 =4450K 3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 14646.0505 12061.7438 9924.4999 -2.96 2.45 13654.1707 11267.8730 9290.2526 -2.95 2.44 12735.8378 10531.3695 8700.6388 -2.93 2.44 11885.1336 9847.7240 8152.2338 -2.92 2.43 11096.6531 9212.8101 7641.8972 -2.91 2.42...
  • Page 121 HSU12/18VHJ(DB) 1171.0715 1038.0743 919.3533 -2.35 2.09 1109.4661 985.0146 873.7359 -2.33 2.08 1051.4226 934.9440 830.6210 -2.31 2.07 996.7169 887.6792 789.8583 -2.29 2.06 945.1404 843.0486 751.3077 -2.27 2.04 896.4981 800.8922 714.8380 -2.26 2.03 850.6086 761.0603 680.3265 -2.24 2.02 807.3024 723.4134 647.6580 -2.22 2.00 766.4212 687.8205...
  • Page 122 HSU12/18VHJ(DB) 134.8559 127.3081 120.0746 -1.42 1.36 129.2457 122.1630 115.3645 -1.40 1.34 123.8956 117.2504 110.8618 -1.37 1.32 118.7926 112.5589 106.5564 -1.35 1.30 113.9241 108.0776 102.4388 -1.32 1.28 109.2784 103.7961 98.5000 -1.30 1.26 104.8443 99.7046 94.7315 -1.28 1.23 100.6112 95.7939 91.1253 -1.25 1.21 96.5692 92.0553...
  • Page 123 HSU12/18VHJ(DB) 25.3290 24.0574 22.8291 -1.61 1.55 24.5311 23.2765 22.0662 -1.65 1.59 23.7620 22.5245 21.3323 -1.69 1.63 23.0205 21.8002 20.6261 -1.73 1.66 22.3055 21.1025 19.9465 -1.77 1.70 21.6159 20.4303 19.2924 -1.81 1.74 20.9508 19.7825 18.6626 -1.85 1.77 20.3091 19.1582 18.0563 -1.89 1.81 19.6899 18.5564...

  • Page 125: Parts And Functions

    system configration VHJ(DB) Parts and Functions Remote controller Indoor Unit 8. HEALTH button 9. ON/OFF button 10. TIMER ON display 11. FAN SPEED display Inlet grille Air Purifying Filter Inlet AUTO 12. LOCK display 13. SWING UP/DOWN display Emergency Outlet 14.

  • Page 126: Clock Set

    system configration HSU12/18VHJ(DB) Operation Clock set Emergency operation and test operation Press CLOCK button, "AM" or "PM" flashes. Press to set correct time. Each press will increase Emergency Operation: or decrease 1min. If the button is kept pressed,time will Use this operation only when the change quickly.

  • Page 127: Sleep Operation

    system configration HSU12/18VHJ(DB) Operation Sleep Operation In AUTO mode The unit operates in corresponding sleep Before going to bed, you can simply press the mode adapted to the automatically selected SLEEP button and unit will operate in SLEEP operation mode. mode and bring you a sound sleep.
  • Page 128 HSU12/18VHJ(DB) system configration Operation Timer On/Off On-Off Operation IMPORTANT INFORMATION REGA- Set clock correctly before starting TIMER operation. RDING THE REFRIGERANT USED 1.After unit starts, select your desired operation mode. 2.Press TIMER button to change TIMER mode. Every Contains fluorinated greenhouse gases time the button is pressed, display changes as follows: covered by the Kyoto Protocol Remote controller:...

  • Page 129: Maintenance

    system configration HSU12/18VHJ(DB) Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper Wipe the air conditioner by using a soft and temperature dry cloth.For serious stains,use a neutral Do not use water wipe the controller with a detergent diluted with water.Wring the water dry cloth.Do not use glass cleaner or chemical...
  • Page 130 HSU12/18VHJ(DB) system configration Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found, Use an exclusive immediately stop the operation button and power source...

  • Page 131: Troubleshooting

    HSU12/18VHJ(DB) system configration Trouble shooting Cautions grille of the air Do not obstruct or cover the ventilation Before asking for service, check the following first. conditoner.Do not put fingers or any other things into the inlet/outlet and swing louver. Do not allow children to play with the air conditioner .In no Phenomenon Cause or check points...

  • Page 132: Service Diagnosis

    HSU12/18VHJ(DB) Functions and control 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 transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.

  • Page 133: Error Codes And Description Indoor Display

    HSU12/18VHJ(DB) Functions and control 7.3.Error Codes and Description indoor display Code indication Reference Outdoor Description Page indoor (LED1 flash times) Indoorand Outdoor Communication fault between indoor and Page .78 outdoor units Room temperature sensor failure Page .69 Indoor Malfunction Heat-exchange sensor failure Page .69 Indoor EEPROM error Page .77...
  • Page 134 HSU12/18VHJ(DB) Functions and control 7.3.1Thermistor or Related Abnormality (indoor unit) E1: Room temperature sensor failure Indoor Display E2: Heat-exchange sensor failure Method of the temperatures detected by the thermistors are used to determine thermistor errors Malfunction Detection Malfunction when the thermistor input is more than 4.92V or less than 0.08V during compressor Decision operation.

  • Page 135: Indoor Fan Motor Malfunction

    HSU12/18VHJ(DB) Functions and control 7.3.2 Indoor fan motor malfunction Indoor display 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 singal don’t receiced in 2 minutes Decision Conditions Supports curses...
  • Page 136 Functions and control HSU12/18VHJ(DB) Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan motor connector,then turn power ON Does it rotate? Check output of fan motor connector I s m o t o r p o w e r voltage DC310V Replace indoor unit Stop fan motor...

  • Page 137: Ipm Protection

    Functions and control HSU12/18VHJ(DB) 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 The system leads to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions...
  • Page 138 HSU12/18VHJ(DB) Functions and control tester) Normal resistance Several k to several M ( ) Unacceptable resistance Short (0 ) or open 7.3.4 The IPM and outdoor PCB don’t communicate or Related Abnormality outdoor display LED1 flash 4 times Indoor Display Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction...

  • Page 139: Thermistor Or Related Abnormality (Outdoor Unit)

    Functions and control HSU12/18VHJ(DB) 7.3.5 Thermistor or Related Abnormality(outdoor unit) Frost-removing temperature sensor failure Indoor display: outdoor display: LED1 flash 10 times: Exhaust temperature sensor failure Indoor display: outdoor display: LED1 flash 13 times: Ambient temperature sensor failure Indoor display: outdoor display: LED1 flash 12 times: Suck temperature sensor failure...

  • Page 140: Functions And Control

    HSU12/18VHJ(DB) Functions and control 7.3.6 Overheat Protection For Exhaust Temperature Indoor display 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 compressor discharge temperature is above 117 Decision Conditions Supposed...
  • Page 141 Functions and control HSU12/18VHJ(DB) Pull out the exhaust sensor and measure its The sensor is damaged. Replace the sensor resistance standard temperatures with a new one. according to the resistance-temperature table The sensor is damaged. Replace the sensor the results deviate with a new one.
  • Page 142 HSU12/18VHJ(DB) Functions and control 7.3.8 Communication error between the indoor and outdoor units Indoor display 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 When the date sent from the another unit cannot be received normally,or when the content Malfunction...
  • Page 143 HSU12/18VHJ(DB) Functions and control Check the status of LED1 on the indoor mainboard. If the LED1 blinks measure voltage between Jumpers 3 and 4 of IC8 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
  • Page 144 HSU12/18VHJ(DB) Functions and control 7.3.9 Power Supply Over or under voltagve fault Indoor display 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 circuit to the microcomputer Decision Conditions...

  • Page 145: Loop Of The Station Detect Error

    Functions and control HSU12/18VHJ(DB) 7.3.10 Loop of the station detect error Outdoor Display LED1 flash 18 times Indoor Display LED1 flash 19 times Indoor Display 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 connection is poor;...
  • Page 147 Appendix HSU12/18VHJ(DB) 10.2 Wiring Diagrams 10.2.1. INDOORUNIT FOR12K RECEIVER DISPLAY...
  • Page 148 Appendix HSU12/18VHJ(DB) FOR18K PIPING TEMP.SENSOR AMBIENT TEMP.SENSOR RECEIVER CN32 DISPLAY RECEIVER CN32 DISPLAY CN48 EMERGENCY SWITCH CN11 CON7 LOUVER MOTOR CON2 CON6 CON1 CON8 ION GENERATOR...
  • Page 149 Appendix HSU12/18VHJ(DB) 10.2.2.Outdoor unit FOR12K CN9 CN8 AC-N AC-L CN11 CN10 CN26 CN22 CN24 CN23 MAIN CONTROL BOARD AC-N AC-L CN10 CN13 CN15 CN14 CN19 CN18 CN17 CN20 CN16 Remark the dotted parts are optional for different unit.
  • Page 150 Appendix HSU12/18VHJ(DB) FOR18K CN9 CN8 AC-N AC-L CN11 CN10 CN26 CN22 CN24 CN23 MAIN CONTROL BOARD AC-N AC-L CN10 CN13 CN15 CN14 CN19 CN18 CN17 CN20 CN16 Remark the dotted parts are optional for different unit.

  • Page 151: Circuit Diagrams

    Appendix HSU12/18VHJ(DB) 10.3. Circuit Diagrams 10.3.1. INDOORUNIT FOR12K...
  • Page 152 Appendix HSU12/18VHJ(DB) FOR18K P1 2SA1037AK CN48 R74 2K R206 CN32 TJC8-02 R40 10K CN32' MODE P4_5/INT0 4.7uF-50V 595-RCK P1_3/KI3/AN11 595-SER P3_6/(INT1) 4.7uF-50V TJC8-02 595-SCK RESET P3_0/TRAO R29 1K P0_5/AN2/CLK1 100uF-16V SWITCH P0_4/AN3 P1_0/KI0/AN8 0.1uF dig1 R26 1K 0.1uF dig2 P3_1/TRBO 0.1uF P6_7/INT3/RXD1 0.01uF...
  • Page 153 Appendix HSU12/18VHJ(DB) +15V FR106(1A-600V-500ns) 10 -1/4W 1.5K-1/4W SCK084R72 10uF-25V-105 310V L7805CV 1A +12V BCK-6-FE1901H 1N4746A(18V-1W 220V-N 1N5399 ER302(3A-200V-35ns) +12V 1N5399 10 -1/4W FR106(1A-600V-500ns) 220V-L 0.1uF 0.1uF LB2271 (32mH-0.35A) 1000uF-35V-105 470uF-16V 1N5399 1N5399 220V-N 10 -1/4W IC10 1N4742A(12V-1W) ICE2A265 CON1 TLP421 TVR14561* 220V-N D250...
  • Page 154 Appendix HSU12/18VHJ(DB) 10.3.2.OUTDOORUNIT FOR12K module board Circuit Diagrams 5.2MH/15A D207 FFA30U60DN PS21965-AT AC -L C405 C404 C406 SGH40N60UF 104/275V 474/275V 680U/400V*2 104/275V R215 D25B X60B 0. 015/5W 0.015/5W AC -N R214 R225 9 10 11 12 13 14 15 16 17 D206 C023 R222...
  • Page 155 Appendix HSU12/18VHJ(DB) +12V L7805CV E22034 102/100V Vout MBR3100\ER302 470U/25V 100U/16V 104/50V 1K/0.5W 472/1KV 104/50V ER106 +5VD 104/275V MBR1100\SB1100 20UH/1A IN5948B 5.1K/1% 470U/25V 100U/16V 222/250VAC 220 220 R18 47 CN22 +15V R90 0 102/100V MUR115\MUR130\ER106 NCP1200P100 330/1W 470U/25V 104/50V 22U/25V 5.1K/1% IRFUC20 PC817A TL431C...
  • Page 156 Appendix HSU12/18VHJ(DB) FOR18K module board Circuit Diagrams 5. 2MH/15A D207 FFA30U60DN PS21965-AT C405 C404 C406 AC -L SGH40N60UF 104/275V 474/275V 680U/400V*2 104/275V R215 D25B X60B 0. 015/5W 0. 015/5W AC -N R214 9 10 11 12 13 14 15 16 17 R225 D206 C023...
  • Page 157 Appendix HSU12/18VHJ(DB) +12V L7805CV E22034 102/100V Vout MBR3100\ER302 470U/25V 1K/0.5W 100U/16V 104/50V 472/1KV 104/50V ER106 +5VD 104/275V 20UH/1A MBR1100\SB1100 IN5948B 5.1K/1% 470U/25V 100U/16V 222/250VAC 220 220 R18 47 CN22 +15V R90 0 102/100V MUR115\MUR130\ER106 NCP1200P100 330/1W 470U/25V 104/50V 22U/25V 5.1K/1% IRFUC20 PC817A TL431C...
  • Page 159 © (Qingdao Haier Air Conditioner General corp.,Ltd) All right reserved .Unauthorized copying and distribution is a violation of law...
  • Page 160 HSU12/18VHJ(DB) of indoor unit Main functions and control specifications of outdoor unit Function of main thermistor Value of thermistor Service Diagnosis Caution for diagnosis 3 Error codes and description indoor display For 12K indoor unit For 18K indoor unit For 12/18K outdoor unit...
  • Page 161 VHJ(DB)

  • Page 162: Safety Cautions

    Introduction VHJ(DB) 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 injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.

  • Page 163: Cautions Regarding Products After Repair

    VHJ(DB) Introduction 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.
  • Page 164 VHJ(DB) Introduction 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 power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.

  • Page 165: Inspection After Repair

    VHJ(DB) Introduction 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 and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 166 VHJ(DB)
  • Page 168 HSU12/18VHJ(DB) HSU18VHJ(DB) HSU12VHJ(DB) 3.51(0.88-3.95) 3.95(0.88-4.25) 5.27(1.17-5.57) 5.57(1.17-6.00) 18000(4000-19000) 19000(4000-20500) 12000(3000-13500) 13500(3000-14500) 3018.6(756.8-3397) ) 4790.2(1006.2-5160) 3397(756.8-3655) 4532.2(1006.2-4790.2 pints/hr 3.52 2.82 1090(250-1450) 1190(250-1450) 1640(270-1900) 1650(270-1950) SEER/HSPF inches inches inches feet 82 1/50 49 1/5 feet 49 1/5 32 4/5 feet 32 4/5 32 4/5 0.018 OZ/Inches...
  • Page 169 HSU12/18VHJ(DB) Rotary Compressor Rotary Compressor DA89X1C-20FZ SNB130FGYM2 ESTER OIL VG74 FV50S pints 0.65 0.88 R410a R410a 42.33 35.27 31.6 31.6 31.6 31.6 1115 1115 1115 1115 1050 1090 inches 21 3/8 x 30 5/6 x 10 2/51 25 1/3 x 30 5/6 x10 2/51 inches 28 1/9 X 36 3/5 X 13 27/70 24 1/6 X 36 3/5 X 13 2/5...

  • Page 170: Indoor Unit Connectors

    HSU12/18VHJ(DB) 4.1 Indoor unit Connectors FOR 12K 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 feedback 5)CH1 Connector for power L wire 6)CON2 Connector for power N wire 7) CON7 Connector for communicate wire 8) CN30 Connector for transformer input...
  • Page 171 HSU12/18VHJ(DB) PCB(1) CN26 CON12 CN27 CN32 CN11 CON2 CN30 CON8 CN31 Domestic Air Conditioner...
  • Page 172 HSU12/18VHJ(DB) FOR 18K 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 display board 7) C0N6 C0N8 Connector for ions generator 8 C0N7 Connector for communicate between the indoor board and the outdoor...
  • Page 173 HSU12/18VHJ(DB) PCB(1) CN32 CON7 CN11 CN48 CON6 CON8 CON1 CON2 CN26 Domestic Air Conditioner...

  • Page 174: Outdoor Unit

    HSU12/18VHJ(DB) Outdoor unit FOR12K 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 valve coil 7) CN17 CN18 CN19 CN20 Connector for thermistors...
  • Page 175 HSU12/18VHJ(DB) PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 CN25 Domestic Air Conditioner...
  • Page 176 HSU12/18VHJ(DB) PCB(2) CN11 CN10 Domestic Air Conditioner...
  • Page 177 HSU12/18VHJ(DB) FOR 18K 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 valve coil 7) CN17 CN18 CN19 CN20 Connector for thermistors...
  • Page 178 HSU12/18VHJ(DB) PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 CN25 Domestic Air Conditioner...
  • Page 179 HSU12/18VHJ(DB) PCB(2) CN11 CN10 Domestic Air Conditioner...

  • Page 180: Funcitions And Control

    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 specification means is a parameter that is stored in EEPROM. Refer to [EEPROM parameter table].

  • Page 181: Main Functions

    HSU12/18VHJ(DB) 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 Limited frequency variables Medium wind volume FQLIMMD...

  • Page 182: Special Functions

    HSU12/18VHJ(DB) 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 running starts, the wind volume is weak 5.1.2.3 Dehumidification running Under the dehumidification mode the fan motor stops as the compressor stops...

  • Page 183: Air Cleaning

    HSU12/18VHJ(DB) 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 for wind-sending and moisture removing Powerful heating Change the set temperature.

  • Page 184: Sleeping Function

    HSU12/18VHJ(DB) 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 Sleep t(hour) b.After setting the sleeping function, the heating mode will run as per the following rules: T( ) 1 hour 1 hour 3hours...

  • Page 185: Rated Operation

    HSU12/18VHJ(DB) 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. Domestic Air Conditioner...

  • Page 186: Outdoor Unit Operation Frequency And Control

    HSU12/18VHJ(DB) 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 Compressor Operation Frequency Range Compressor Operation Frequency Range: Outdoor Temperature 4 18...

  • Page 187: Outdoor Fan Control

    HSU12/18VHJ(DB) 5.2.2 Outdoor fan control Compressor startup within 3min ,outdoor fan speed control as follows: Outdoor < Temperature Cooling/ Dehumidification Heating fter compressor runs 3min ,outdoor fan speed control as follows: Cooling/ Dehumidification: Compressor Operation Frequency Hz <25 Heating: Compressor Operation Frequency (Hz) <25 Compressor shutdown and outdoor fan residual heat blow process When compressor shuts down in cooling mode, outdoor fan automatically jumps to low speed and...

  • Page 188: Ptc Output Control

    HSU12/18VHJ(DB) TE C×TA Among which: C:TA 0 C=0.8 TA 0 C=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 Defrosting Time Interval time interval between two defrosting cycles is 45 minutes. Defrosting Operation When defrosting begins, compressor will stop for one minute, external fan is running and 50s later, four-way valve will be off.

  • Page 189: System Protection Function

    HSU12/18VHJ(DB) 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 position after being fully turned off.

  • Page 190: Outdoor Temperature Limit

    HSU12/18VHJ(DB) 5.2.6.4 Outdoor Temperature Limit Cooling: When outdoor temperature is lower than 23 , cooling operation will start, compressor 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 operation will start, compressor frequency is limited to less than 53 HZ, outdoor wind speed is forced at level 1.

  • Page 191: Function Of Main Thermistor

    HSU12/18VHJ(DB) 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 sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.

  • Page 192: Room Sensor

    HSU12/18VHJ(DB) 5.4 Value of Thermistor 5.4.1 intdoor Unit Room sensor R25 =23K ±3.5% B25 /50 =4200K±3% Temp.( ) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 568.8372 501.0746 440.8435 -1.97 1.75 530.9600 468.6491 413.1441 -1.95 1.74 495.8488 438.5314 387.3645 -1.93 1.72 463.2850 410.5433...
  • Page 193 HSU12/18VHJ(DB) 56.3905 53.1320 50.0006 -1.17 1.13 53.4631 50.4521 47.5523 -1.15 1.11 50.7048 47.9230 45.2384 -1.13 1.09 48.1049 45.5355 43.0505 -1.10 1.07 45.6534 43.2808 40.9813 -1.08 1.04 43.3410 41.1509 39.0236 -1.05 1.02 41.1592 39.1381 37.1708 -1.03 1.00 39.0998 37.2355 35.4167 -1.00 0.98 37.1553 35.4363...
  • Page 194 HSU12/18VHJ(DB) 7.3580 6.8556 6.3797 -1.85 1.76 7.0796 6.5884 6.1237 -1.90 1.79 6.8131 6.3329 5.8793 -1.94 1.83 6.5581 6.0887 5.6459 -1.99 1.87 6.3140 5.8552 5.4230 -2.03 1.91 6.0802 5.6318 5.2100 -2.07 1.95 5.8563 5.4181 5.0065 -2.12 1.99 5.6417 5.2136 4.8120 -2.16 2.03 5.4361 5.0178...
  • Page 195 HSU12/18VHJ(DB) 1.6138 1.4347 1.2739 -4.02 3.61 1.5650 1.3900 1.2331 -4.08 3.66 1.5180 1.3470 1.1937 -4.13 3.70 1.4726 1.3054 1.1559 -4.19 3.75 1.4287 1.2654 1.1194 -4.24 3.80 1.3864 1.2268 1.0842 -4.30 3.84 1.3455 1.1895 1.0503 -4.36 3.89 1.3060 1.1535 1.0176 -4.42 3.94 1.2679 1.1188...
  • Page 196 HSU12/18VHJ(DB) 66.3463 61.0123 56.0565 -1.64 1.52 62.8755 57.9110 53.2905 -1.62 1.51 59.6076 54.9866 50.6781 -1.60 1.49 56.5296 52.2278 48.2099 -1.58 1.47 53.6294 49.6244 45.8771 -1.56 1.46 50.8956 47.1666 43.6714 -1.54 1.44 48.3178 44.8454 41.5851 -1.51 1.42 45.8860 42.6525 39.6112 -1.49 1.40 43.5912 40.5800...
  • Page 197 HSU12/18VHJ(DB) 8.1371 7.8428 7.5522 -0.95 0.93 7.8299 7.5377 7.2498 -0.98 0.97 7.5359 7.2461 6.9611 -1.02 1.00 7.2546 6.9673 6.6854 -1.06 1.04 6.9852 6.7008 6.4222 -1.10 1.07 6.7273 6.4459 6.1707 -1.13 1.11 6.4803 6.2021 5.9304 -1.17 1.14 6.2437 5.9687 5.7007 -1.21 1.18 6.0170 5.7454...
  • Page 198 HSU12/18VHJ(DB) 1.7434 1.6021 1.4710 -2.88 2.67 1.6913 1.5528 1.4243 -2.92 2.71 1.6409 1.5051 1.3794 -2.97 2.75 1.5923 1.4592 1.3360 -3.02 2.80 1.5454 1.4149 1.2942 -3.07 2.84 1.5000 1.3721 1.2540 -3.12 2.88 1.4562 1.3308 1.2151 -3.17 2.93 1.4139 1.2910 1.1776 -3.22 2.97 1.3730 1.2525...

  • Page 199: Outdoor Unit

    HSU12/18VHJ(DB) 5.4.2 Outdoor Unit Ambient Sensor, Suction Sensor, Defrosting Sensor R25 =10K B25 /50 =3700K 3% Temp.( ) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 165.2170 147.9497 132.3678 -1.94 1.75 155.5754 139.5600 125.0806 -1.93 1.74 146.5609 131.7022 118.2434 -1.91 1.73 138.1285 124.3392...
  • Page 200 HSU12/18VHJ(DB) 20.0176 19.0621 18.1358 -1.11 1.07 19.1149 18.2270 17.3646 -1.08 1.05 18.2580 17.4331 16.6305 -1.06 1.03 17.4442 16.6782 15.9315 -1.03 1.01 16.6711 15.9601 15.2657 -1.01 0.99 15.9366 15.2770 14.6315 -0.98 0.96 15.2385 14.6268 14.0271 -0.96 0.94 14.5748 14.0079 13.4510 -0.93 0.92 13.9436 13.4185...
  • Page 201 HSU12/18VHJ(DB) 3.4195 3.2085 3.0079 -1.91 1.82 3.3060 3.0989 2.9021 -1.95 1.85 3.1969 2.9935 2.8005 -2.00 1.89 3.0919 2.8922 2.7029 -2.04 1.93 2.9909 2.7948 2.6092 -2.08 1.97 2.8936 2.7012 2.5193 -2.13 2.01 2.8000 2.6112 2.4328 -2.17 2.05 2.7099 2.5246 2.3498 -2.22 2.09 2.6232 2.4413...
  • Page 202 HSU12/18VHJ(DB) 0.8741 0.7863 0.7067 -4.12 3.74 0.8507 0.7646 0.6867 -4.18 3.78 0.8281 0.7436 0.6672 -4.23 3.83 0.8061 0.7233 0.6484 -4.29 3.88 0.7848 0.7036 0.6303 -4.34 3.92 0.7641 0.6845 0.6127 -4.40 3.97 0.7441 0.6661 0.5957 -4.46 4.02 0.7247 0.6482 0.5792 -4.51 4.07 0.7059 0.6308...
  • Page 203 HSU12/18VHJ(DB) Discharging Sensor R80 =50K B25/80 =4450K 3% Temp.(( )) Max.(K ) Normal(K ) Min.(K ) Tolerance( ) 14646.0505 12061.7438 9924.4999 -2.96 2.45 13654.1707 11267.8730 9290.2526 -2.95 2.44 12735.8378 10531.3695 8700.6388 -2.93 2.44 11885.1336 9847.7240 8152.2338 -2.92 2.43 11096.6531 9212.8101 7641.8972 -2.91 2.42...
  • Page 204 HSU12/18VHJ(DB) 1171.0715 1038.0743 919.3533 -2.35 2.09 1109.4661 985.0146 873.7359 -2.33 2.08 1051.4226 934.9440 830.6210 -2.31 2.07 996.7169 887.6792 789.8583 -2.29 2.06 945.1404 843.0486 751.3077 -2.27 2.04 896.4981 800.8922 714.8380 -2.26 2.03 850.6086 761.0603 680.3265 -2.24 2.02 807.3024 723.4134 647.6580 -2.22 2.00 766.4212 687.8205...
  • Page 205 HSU12/18VHJ(DB) 134.8559 127.3081 120.0746 -1.42 1.36 129.2457 122.1630 115.3645 -1.40 1.34 123.8956 117.2504 110.8618 -1.37 1.32 118.7926 112.5589 106.5564 -1.35 1.30 113.9241 108.0776 102.4388 -1.32 1.28 109.2784 103.7961 98.5000 -1.30 1.26 104.8443 99.7046 94.7315 -1.28 1.23 100.6112 95.7939 91.1253 -1.25 1.21 96.5692 92.0553...
  • Page 206 HSU12/18VHJ(DB) 25.3290 24.0574 22.8291 -1.61 1.55 24.5311 23.2765 22.0662 -1.65 1.59 23.7620 22.5245 21.3323 -1.69 1.63 23.0205 21.8002 20.6261 -1.73 1.66 22.3055 21.1025 19.9465 -1.77 1.70 21.6159 20.4303 19.2924 -1.81 1.74 20.9508 19.7825 18.6626 -1.85 1.77 20.3091 19.1582 18.0563 -1.89 1.81 19.6899 18.5564...

  • Page 208: Parts And Functions

    system configration VHJ(DB) Parts and Functions Remote controller Indoor Unit 8. HEALTH button 9. ON/OFF button 10. TIMER ON display 11. FAN SPEED display Inlet grille Air Purifying Filter Inlet AUTO 12. LOCK display 13. SWING UP/DOWN display Emergency Outlet 14.

  • Page 209: Clock Set

    system configration HSU12/18VHJ(DB) Operation Clock set Emergency operation and test operation Press CLOCK button, "AM" or "PM" flashes. Press to set correct time. Each press will increase Emergency Operation: or decrease 1min. If the button is kept pressed,time will Use this operation only when the change quickly.

  • Page 210: Sleep Operation

    system configration HSU12/18VHJ(DB) Operation Sleep Operation In AUTO mode The unit operates in corresponding sleep Before going to bed, you can simply press the mode adapted to the automatically selected SLEEP button and unit will operate in SLEEP operation mode. mode and bring you a sound sleep.
  • Page 211 HSU12/18VHJ(DB) system configration Operation Timer On/Off On-Off Operation IMPORTANT INFORMATION REGA- Set clock correctly before starting TIMER operation. RDING THE REFRIGERANT USED 1.After unit starts, select your desired operation mode. 2.Press TIMER button to change TIMER mode. Every Contains fluorinated greenhouse gases time the button is pressed, display changes as follows: covered by the Kyoto Protocol Remote controller:...

  • Page 212: Maintenance

    system configration HSU12/18VHJ(DB) Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper Wipe the air conditioner by using a soft and temperature dry cloth.For serious stains,use a neutral Do not use water wipe the controller with a detergent diluted with water.Wring the water dry cloth.Do not use glass cleaner or chemical...
  • Page 213 HSU12/18VHJ(DB) system configration Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found, Use an exclusive immediately stop the operation button and power source...

  • Page 214: Troubleshooting

    HSU12/18VHJ(DB) system configration Trouble shooting Cautions grille of the air Do not obstruct or cover the ventilation Before asking for service, check the following first. conditoner.Do not put fingers or any other things into the inlet/outlet and swing louver. Do not allow children to play with the air conditioner .In no Phenomenon Cause or check points...

  • Page 215: Service Diagnosis

    HSU12/18VHJ(DB) Functions and control 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 transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.

  • Page 216: Error Codes And Description Indoor Display

    HSU12/18VHJ(DB) Functions and control 7.3.Error Codes and Description indoor display Code indication Reference Outdoor Description Page indoor (LED1 flash times) Indoorand Outdoor Communication fault between indoor and Page .78 outdoor units Room temperature sensor failure Page .69 Indoor Malfunction Heat-exchange sensor failure Page .69 Indoor EEPROM error Page .77...
  • Page 217 HSU12/18VHJ(DB) Functions and control 7.3.1Thermistor or Related Abnormality (indoor unit) E1: Room temperature sensor failure Indoor Display E2: Heat-exchange sensor failure Method of the temperatures detected by the thermistors are used to determine thermistor errors Malfunction Detection Malfunction when the thermistor input is more than 4.92V or less than 0.08V during compressor Decision operation.

  • Page 218: Indoor Fan Motor Malfunction

    HSU12/18VHJ(DB) Functions and control 7.3.2 Indoor fan motor malfunction Indoor display 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 singal don’t receiced in 2 minutes Decision Conditions Supports curses...
  • Page 219 Functions and control HSU12/18VHJ(DB) Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan motor connector,then turn power ON Does it rotate? Check output of fan motor connector I s m o t o r p o w e r voltage DC310V Replace indoor unit Stop fan motor...

  • Page 220: Ipm Protection

    Functions and control HSU12/18VHJ(DB) 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 The system leads to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions...
  • Page 221 HSU12/18VHJ(DB) Functions and control tester) Normal resistance Several k to several M ( ) Unacceptable resistance Short (0 ) or open 7.3.4 The IPM and outdoor PCB don’t communicate or Related Abnormality outdoor display LED1 flash 4 times Indoor Display Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction...

  • Page 222: Thermistor Or Related Abnormality (Outdoor Unit)

    Functions and control HSU12/18VHJ(DB) 7.3.5 Thermistor or Related Abnormality(outdoor unit) Frost-removing temperature sensor failure Indoor display: outdoor display: LED1 flash 10 times: Exhaust temperature sensor failure Indoor display: outdoor display: LED1 flash 13 times: Ambient temperature sensor failure Indoor display: outdoor display: LED1 flash 12 times: Suck temperature sensor failure...

  • Page 223: Functions And Control

    HSU12/18VHJ(DB) Functions and control 7.3.6 Overheat Protection For Exhaust Temperature Indoor display 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 compressor discharge temperature is above 117 Decision Conditions Supposed...
  • Page 224 Functions and control HSU12/18VHJ(DB) Pull out the exhaust sensor and measure its The sensor is damaged. Replace the sensor resistance standard temperatures with a new one. according to the resistance-temperature table The sensor is damaged. Replace the sensor the results deviate with a new one.
  • Page 225 HSU12/18VHJ(DB) Functions and control 7.3.8 Communication error between the indoor and outdoor units Indoor display 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 When the date sent from the another unit cannot be received normally,or when the content Malfunction...
  • Page 226 HSU12/18VHJ(DB) Functions and control Check the status of LED1 on the indoor mainboard. If the LED1 blinks measure voltage between Jumpers 3 and 4 of IC8 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
  • Page 227 HSU12/18VHJ(DB) Functions and control 7.3.9 Power Supply Over or under voltagve fault Indoor display 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 circuit to the microcomputer Decision Conditions...
  • Page 228 Functions and control HSU12/18VHJ(DB) 7.3.10 Loop of the station detect error Outdoor Display LED1 flash 18 times Indoor Display LED1 flash 19 times Indoor Display 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 connection is poor;...
  • Page 230 Appendix HSU12/18VHJ(DB) 10.2 Wiring Diagrams 10.2.1. INDOORUNIT FOR12K RECEIVER DISPLAY...
  • Page 231 Appendix HSU12/18VHJ(DB) FOR18K PIPING TEMP.SENSOR AMBIENT TEMP.SENSOR RECEIVER CN32 DISPLAY RECEIVER CN32 DISPLAY CN48 EMERGENCY SWITCH CN11 CON7 LOUVER MOTOR CON2 CON6 CON1 CON8 ION GENERATOR...
  • Page 232 Appendix HSU12/18VHJ(DB) 10.2.2.Outdoor unit FOR12K CN9 CN8 AC-N AC-L CN11 CN10 CN26 CN22 CN24 CN23 MAIN CONTROL BOARD AC-N AC-L CN10 CN13 CN15 CN14 CN19 CN18 CN17 CN20 CN16 Remark the dotted parts are optional for different unit.
  • Page 233 Appendix HSU12/18VHJ(DB) FOR18K CN9 CN8 AC-N AC-L CN11 CN10 CN26 CN22 CN24 CN23 MAIN CONTROL BOARD AC-N AC-L CN10 CN13 CN15 CN14 CN19 CN18 CN17 CN20 CN16 Remark the dotted parts are optional for different unit.
  • Page 234 Appendix HSU12/18VHJ(DB) 10.3. Circuit Diagrams 10.3.1. INDOORUNIT FOR12K...
  • Page 235 Appendix HSU12/18VHJ(DB) FOR18K P1 2SA1037AK CN48 R74 2K R206 CN32 TJC8-02 R40 10K CN32' MODE P4_5/INT0 4.7uF-50V 595-RCK P1_3/KI3/AN11 595-SER P3_6/(INT1) 4.7uF-50V TJC8-02 595-SCK RESET P3_0/TRAO R29 1K P0_5/AN2/CLK1 100uF-16V SWITCH P0_4/AN3 P1_0/KI0/AN8 0.1uF dig1 R26 1K 0.1uF dig2 P3_1/TRBO 0.1uF P6_7/INT3/RXD1 0.01uF...
  • Page 236 Appendix HSU12/18VHJ(DB) +15V FR106(1A-600V-500ns) 10 -1/4W 1.5K-1/4W SCK084R72 10uF-25V-105 310V L7805CV 1A +12V BCK-6-FE1901H 1N4746A(18V-1W 220V-N 1N5399 ER302(3A-200V-35ns) +12V 1N5399 10 -1/4W FR106(1A-600V-500ns) 220V-L 0.1uF 0.1uF LB2271 (32mH-0.35A) 1000uF-35V-105 470uF-16V 1N5399 1N5399 220V-N 10 -1/4W IC10 1N4742A(12V-1W) ICE2A265 CON1 TLP421 TVR14561* 220V-N D250...
  • Page 237 Appendix HSU12/18VHJ(DB) 10.3.2.OUTDOORUNIT FOR12K module board Circuit Diagrams 5.2MH/15A D207 FFA30U60DN PS21965-AT AC -L C405 C404 C406 SGH40N60UF 104/275V 474/275V 680U/400V*2 104/275V R215 D25B X60B 0. 015/5W 0.015/5W AC -N R214 R225 9 10 11 12 13 14 15 16 17 D206 C023 R222...
  • Page 238 Appendix HSU12/18VHJ(DB) +12V L7805CV E22034 102/100V Vout MBR3100\ER302 470U/25V 100U/16V 104/50V 1K/0.5W 472/1KV 104/50V ER106 +5VD 104/275V MBR1100\SB1100 20UH/1A IN5948B 5.1K/1% 470U/25V 100U/16V 222/250VAC 220 220 R18 47 CN22 +15V R90 0 102/100V MUR115\MUR130\ER106 NCP1200P100 330/1W 470U/25V 104/50V 22U/25V 5.1K/1% IRFUC20 PC817A TL431C...
  • Page 239 Appendix HSU12/18VHJ(DB) FOR18K module board Circuit Diagrams 5. 2MH/15A D207 FFA30U60DN PS21965-AT C405 C404 C406 AC -L SGH40N60UF 104/275V 474/275V 680U/400V*2 104/275V R215 D25B X60B 0. 015/5W 0. 015/5W AC -N R214 9 10 11 12 13 14 15 16 17 R225 D206 C023...
  • Page 240 Appendix HSU12/18VHJ(DB) +12V L7805CV E22034 102/100V Vout MBR3100\ER302 470U/25V 1K/0.5W 100U/16V 104/50V 472/1KV 104/50V ER106 +5VD 104/275V 20UH/1A MBR1100\SB1100 IN5948B 5.1K/1% 470U/25V 100U/16V 222/250VAC 220 220 R18 47 CN22 +15V R90 0 102/100V MUR115\MUR130\ER106 NCP1200P100 330/1W 470U/25V 104/50V 22U/25V 5.1K/1% IRFUC20 PC817A TL431C...
  • Page 242 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 ©(Qingdao Haier Air Conditioner General corp.,Ltd) All right reserved .Unauthorized copying and distribution is a violation of law...
  • Page 243 HSU24VHJ(DB)-SM of indoor unit Main functions and control specifications of outdoor unit Function of main thermistor Value of thermistor Service Diagnosis Caution for diagnosis 3 Error codes and description indoor display For indoor unit For outdoor unit 10. Wiring Diagrams ..................103 10.1 Indoor Unit ....................103 10.2 Outdoor Unit ....................104 11.
  • Page 244 Introduction HSU24VHJ(DB)-SM 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 injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.
  • Page 245 HSU24VHJ(DB)-SM Introduction 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.
  • Page 246 HSU24VHJ(DB)-SM Introduction 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 power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
  • Page 247 HSU24VHJ(DB)-SM Introduction 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 and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 248 HSU24VHJ(DB)-SM...
  • Page 249 HSU09VHJ(DB)

  • Page 250: Specifications

    HSU24VHJ(DB) Specifications 3. Specifications HSU24VHJ(DB) Model Cooling Heating Capacity Rated (Min.~Max.) Btu/h 22000(7500~23000) 23000(7500~24000) kcal/h 5504(1892~5762) 5762(1892~6020) pints/h 9.68 - - - Btu/(h.w) inches Piping Connections inches (external diameter) inches Heat Insulation Both Liquid and Gas Pipes inches 98 7/16 inches 59 1/16 inches...
  • Page 251 HSU24VHJ(DB)-SM SNB130FGYM2 FV50S pints 0.88 R410a 3.52 pounds 51.7 51.7 1825.0 1825.0 2120 1970 inches 33 7/8X12 1/8X28 3/4 inches 39 3/16X16 1/2X32 1/16 pounds 106.04 pounds 114.84...

  • Page 252: Printed Circuit Board Connector Wiring Diagram

    HSU24VHJ DB Connector Wiring Diagram 4.Printed Circuit Board Connector Wiring Diagram 4.1 Indoor unit Connectors 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 display board...
  • Page 253 HSU24VHJ DB Connector Wiring Diagram PCB(1) CN32 CN11 CN48 CON6 CON8 CON1 CON2 CN26 Domestic Air Conditioner...
  • Page 254 HSU24VHJ DB Connector Wiring Diagram Domestic Air Conditioner...

  • Page 255: Outdoor Unit

    HSU24VHJ DB Connector Wiring Diagram 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 Connector for four way valve coil 7) CN17,CN18,CN19,CN20 Connector for thermistors...
  • Page 256 HSU24VHJ DB Connector Wiring Diagram PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 CN25 Domestic Air Conditioner...
  • Page 257 HSU24VHJ DB Connector Wiring Diagram PCB(2) CN11 CN10 Domestic Air Conditioner...
  • Page 258 This specification use for HSU18VHJ DB frequency conversion air condition are manufactured by Haier air condition parent company. "Setting value" (express in parameter) in this specification means is a parameter that is stored in EEPROM. Refer to [EEPROM parameter table].
  • Page 259 HSU24VHJ DB Funcitions and Control 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 Limited frequency variables...
  • Page 260 HSU24VHJ DB Funcitions and Control 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 running starts, the wind volume is weak 5.1.2.3 Dehumidification running Under the dehumidification mode the fan motor stops as the compressor stops...
  • Page 261 HSU24VHJ DB Funcitions and Control When in automatic mode, there are powerful and silent functions for your choice. When the main unit 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.
  • Page 262 HSU24VHJ DB Funcitions and Control 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 Sleep t(hour) b.After setting the sleeping function, the heating mode will run as per the following rules: T( ) 1 hour 1 hour 3hours...
  • Page 263 HSU24VHJ DB Funcitions and Control 5.1.3.7 Power failure compensation To enter into the function please press the sleep key 10 times with 4 beeps in 7 seconds Under the power failure compensation mode, unplug and plug again ,the indoor unit will resume original operation Under the power failure compensation mode, unplug and plug again, the unit will be on OFF state.
  • Page 264 HSU24VHJ DB Funcitions and Control 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 Compressor Operation Frequency Range Compressor Operation Frequency Range: Outdoor Temperature...
  • Page 265 HSU24VHJ DB Funcitions and Control 5.2.2 Outdoor fan control Compressor startup within 3min ,outdoor fan speed control as follows: Outdoor <10 10 25 ≥25 Temperature Cooling/ Dehumidification Heating fter compressor runs 3min ,outdoor fan speed control as follows: Cooling/ Dehumidification: Compressor Operation Frequency Hz <25 25 45...
  • Page 266 HSU24VHJ DB Funcitions and Control TE≤C×TA α Among which: C:TA 0 C=0.8 TA≥0 C=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 α≤-5 Defrosting Time Interval time interval between two defrosting cycles is 45 minutes.
  • Page 267 HSU24VHJ DB Funcitions and Control 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 position after being fully turned off.
  • Page 268 HSU24VHJ DB Funcitions and Control 5.2.6.4 Outdoor Temperature Limit Cooling: When outdoor temperature is lower than 23 , cooling operation will start, compressor 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 operation will start, compressor frequency is limited to less than 53 HZ, outdoor wind speed is forced at level 1.
  • Page 269 HSU24VHJ DB Funcitions and Control 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 sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the target discharge temperature can be obtained.
  • Page 270 HSU24VHJ DB Funcitions and Control 5.4 Value of Thermistor 5.4.1 intdoor Unit Room sensor R25 =23KΩ±3.5% B25 /50 =4200K±3% Temp.( ) Max.(KΩ) Normal(KΩ) Min.(KΩ) Tolerance( ) 568.8372 501.0746 440.8435 -1.97 1.75 530.9600 468.6491 413.1441 -1.95 1.74 495.8488 438.5314 387.3645 -1.93 1.72 463.2850 410.5433...
  • Page 271 HSU24VHJ DB Funcitions and Control 62.7992 58.9853 55.3351 -1.22 1.17 59.4984 55.9729 52.5917 -1.20 1.15 56.3905 53.1320 50.0006 -1.17 1.13 53.4631 50.4521 47.5523 -1.15 1.11 50.7048 47.9230 45.2384 -1.13 1.09 48.1049 45.5355 43.0505 -1.10 1.07 45.6534 43.2808 40.9813 -1.08 1.04 43.3410 41.1509 39.0236...
  • Page 272 HSU24VHJ DB Funcitions and Control 8.2713 7.7345 7.2237 -1.73 1.64 7.9531 7.4280 6.9291 -1.77 1.68 7.6489 7.1353 6.6480 -1.81 1.72 7.3580 6.8556 6.3797 -1.85 1.76 7.0796 6.5884 6.1237 -1.90 1.79 6.8131 6.3329 5.8793 -1.94 1.83 6.5581 6.0887 5.6459 -1.99 1.87 6.3140 5.8552 5.4230...
  • Page 273 HSU24VHJ DB Funcitions and Control 1.8856 1.6844 1.5028 -3.75 3.38 1.8272 1.6307 1.4535 -3.80 3.43 1.7709 1.5789 1.4060 -3.86 3.47 1.7166 1.5291 1.3603 -3.91 3.52 1.6643 1.4810 1.3163 -3.97 3.56 1.6138 1.4347 1.2739 -4.02 3.61 1.5650 1.3900 1.2331 -4.08 3.66 1.5180 1.3470 1.1937...
  • Page 274 HSU24VHJ DB Funcitions and Control 97.6556 88.7989 80.6728 -1.78 1.63 92.3028 84.0695 76.5017 -1.76 1.62 87.2775 79.6222 72.5729 -1.74 1.60 82.5577 75.4384 68.8710 -1.72 1.59 78.1230 71.5010 65.3815 -1.70 1.57 73.9543 67.7939 62.0907 -1.68 1.55 70.0342 64.3023 58.9863 -1.66 1.54 66.3463 61.0123 56.0565...
  • Page 275 HSU24VHJ DB Funcitions and Control 11.2172 10.8634 10.5114 -0.78 0.78 10.7475 10.4216 10.0964 -0.75 0.75 10.3000 10.0000 9.7000 -0.75 0.75 9.8975 9.5974 9.2980 -0.76 0.76 9.5129 9.2132 8.9148 -0.80 0.80 9.1454 8.8465 8.5496 -0.84 0.83 8.7942 8.4964 8.2013 -0.87 0.86 8.4583 8.1621 7.8691...
  • Page 276 HSU24VHJ DB Funcitions and Control 2.3068 2.1383 1.9803 -2.45 2.29 2.2347 2.0695 1.9147 -2.49 2.34 2.1652 2.0032 1.8516 -2.54 2.38 2.0983 1.9393 1.7908 -2.59 2.42 2.0337 1.8778 1.7324 -2.63 2.46 1.9714 1.8186 1.6761 -2.68 2.50 1.9113 1.7614 1.6219 -2.73 2.54 1.8533 1.7064 1.5697...

  • Page 277: Outdoor Unit

    HSU24VHJ DB Funcitions and Control 0.6528 0.5820 0.5183 -4.74 4.26 0.6361 0.5667 0.5043 -4.80 4.31 0.6200 0.5518 0.4907 -4.86 4.36 0.6043 0.5374 0.4775 -4.92 4.41 0.5891 0.5235 0.4648 -4.98 4.45 0.5743 0.5100 0.4524 -5.04 4.50 0.5600 0.4968 0.4404 -5.10 4.55 0.5460 0.4841 0.4288...
  • Page 278 HSU24VHJ DB Funcitions and Control 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31 33.8936 31.7844 29.7796 -1.36 1.29 32.2608 30.2968 28.4267 -1.34 1.28 30.7162 28.8875 27.1431 -1.32 1.26 29.2545 27.5519 25.9250 -1.29 1.24 27.8708 26.2858 24.7686 -1.27 1.22 26.5605 25.0851 23.6704...
  • Page 279 HSU24VHJ DB Funcitions and Control 5.5914 5.3269 5.0704 -1.33 1.29 5.3916 5.1308 4.8783 -1.37 1.33 5.2001 4.9430 4.6944 -1.41 1.36 5.0163 4.7630 4.5185 -1.45 1.40 4.8400 4.5905 4.3500 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47 4.5083 4.2666 4.0342 -1.57 1.51 4.3524 4.1145 3.8862...
  • Page 280 HSU24VHJ DB Funcitions and Control 1.3335 1.2153 1.1066 -3.32 3.06 1.2953 1.1794 1.0730 -3.38 3.10 1.2583 1.1448 1.0405 -3.43 3.15 1.2226 1.1113 1.0092 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33 1.0910 0.9882 0.8942...
  • Page 281 HSU24VHJ DB Funcitions and Control Discharging Sensor R80 =50KΩ±3% B25/80 =4450K±3% Temp.(( )) Max.(KΩ) Normal(KΩ) Min.(KΩ) Tolerance( ) 14646.0505 12061.7438 9924.4999 -2.96 2.45 13654.1707 11267.8730 9290.2526 -2.95 2.44 12735.8378 10531.3695 8700.6388 -2.93 2.44 11885.1336 9847.7240 8152.2338 -2.92 2.43 11096.6531 9212.8101 7641.8972 -2.91 2.42...
  • Page 282 HSU24VHJ DB Funcitions and Control 1236.4792 1094.3200 967.6334 -2.36 2.11 1171.0715 1038.0743 919.3533 -2.35 2.09 1109.4661 985.0146 873.7359 -2.33 2.08 1051.4226 934.9440 830.6210 -2.31 2.07 996.7169 887.6792 789.8583 -2.29 2.06 945.1404 843.0486 751.3077 -2.27 2.04 896.4981 800.8922 714.8380 -2.26 2.03 850.6086 761.0603 680.3265...
  • Page 283 HSU24VHJ DB Funcitions and Control 146.9136 138.3454 130.1598 -1.47 1.40 140.7403 132.6980 125.0027 -1.44 1.38 134.8559 127.3081 120.0746 -1.42 1.36 129.2457 122.1630 115.3645 -1.40 1.34 123.8956 117.2504 110.8618 -1.37 1.32 118.7926 112.5589 106.5564 -1.35 1.30 113.9241 108.0776 102.4388 -1.32 1.28 109.2784 103.7961 98.5000...
  • Page 284 HSU24VHJ DB Funcitions and Control 27.9078 26.5864 25.3048 -1.49 1.44 27.0160 25.7110 24.4470 -1.53 1.48 26.1569 24.8685 23.6222 -1.57 1.52 25.3290 24.0574 22.8291 -1.61 1.55 24.5311 23.2765 22.0662 -1.65 1.59 23.7620 22.5245 21.3323 -1.69 1.63 23.0205 21.8002 20.6261 -1.73 1.66 22.3055 21.1025 19.9465...
  • Page 285 HSU24VHJ(DB)-SM...
  • Page 286 HSU24VHJ(DB)-SM system configration Parts and Functions Remote controller Indoor Unit 8. HEALTH button 9. ON/OFF button 10. TIMER ON display 11. FAN SPEED display Inlet grille Air Purifying Filter Inlet AUTO 12. LOCK display 13. SWING UP/DOWN display Emergency Outlet 14.
  • Page 287 system configration HSU24VHJ(D B)-SM Operation Clock set Emergency operation and test operation Press CLOCK button, "AM" or "PM" flashes. Press to set correct time. Each press will increase Emergency Operation: or decrease 1min. If the button is kept pressed,time will Use this operation only when the change quickly.
  • Page 288 system configration HSU24VHJ(D B)-SM Operation Sleep Operation In AUTO mode The unit operates in corresponding sleep Before going to bed, you can simply press the mode adapted to the automatically selected SLEEP button and unit will operate in SLEEP operation mode. mode and bring you a sound sleep.
  • Page 289 HSU24VHJ(DB)-SM system configration Operation Timer On/Off On-Off Operation IMPORTANT INFORMATION REGA- Set clock correctly before starting TIMER operation. RDING THE REFRIGERANT USED 1.After unit starts, select your desired operation mode. 2.Press TIMER button to change TIMER mode. Every Contains fluorinated greenhouse gases time the button is pressed, display changes as follows: covered by the Kyoto Protocol Remote controller:...
  • Page 290 system configration HSU24VHJ(DB)-SM Maintenance For Smart Use of The Air Conditioner Remote Controller Indoor Body Setting of proper room Do not block the air inlet temperature or outlet Proper Wipe the air conditioner by using a soft and temperature dry cloth.For serious stains,use a neutral detergent diluted with water.Wring the water Do not use water wipe the controller with a out of the cloth before wiping.then wipe off...
  • Page 291 HSU24VHJ(DB)-SM system configration Cautions WARNING Please call Sales/Service Shop for the Installation. Do not attempt to install the air conditioner by yourself because improper works may cause electric shock, fire, water leakage. WARNING Check proper When abnormality such as burnt-small found, Use an exclusive immediately stop the operation button and power source...

  • Page 292: Troubleshooting

    HSU24VHJ(DB)-SM system configration Trouble shooting Cautions grille of the air Do not obstruct or cover the ventilation Before asking for service, check the following first. conditoner.Do not put fingers or any other things into the inlet/outlet and swing louver. Do not allow children to play with the air conditioner .In no Phenomenon Cause or check points...
  • Page 293 HSU24VHJ DB Service Diagnosis 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 transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.
  • Page 294 HSU24VHJ DB Service Diagnosis 7.3.Error Codes and Description indoor display Code indication Reference Outdoor Description Page indoor (LED1 flash times) Indoorand Outdoor Communication fault between indoor and Page .60 outdoor units Room temperature sensor failure Page .52 Indoor Malfunction Heat-exchange sensor failure Page .52 Indoor EEPROM error Page .58...
  • Page 295 HSU24VHJ DB Service Diagnosis 7.3.1Thermistor or Related Abnormality (indoor unit) E1: Room temperature sensor failure Indoor Display E2: Heat-exchange sensor failure Method of the temperatures detected by the thermistors are used to determine thermistor errors Malfunction Detection Malfunction when the thermistor input is more than 4.92V or less than 0.08V during compressor Decision operation.
  • Page 296 HSU24VHJ DB Service Diagnosis 7.4.2 Indoor fan motor malfunction Indoor Display 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 singal don’t receiced in 2 minutes Decision Conditions Supposed Causes...
  • Page 297 HSU24VHJ DB Service Diagnosis Turn off power supply and rotate fan by hand Does fan rotate Replace fan motor smoothly? Turn power ON and operate fan Turn off power supply and disconnect fan motor connector,then turn power ON Does it rotate? Check output of fan motor connector I s m o t o r p o w e r voltage DC310V...
  • Page 298 HSU24VHJ DB Service Diagnosis 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 The system leads to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions...
  • Page 299 HSU24VHJ DB Service Diagnosis Ω to several MΩ ( ) Unacceptable resistance Short (0 Ω) or open 7.3.4 The IPM and outdoor PCB don’t communicate or Related Abnormality outdoor display LED1 flash 4 times Indoor Display Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction...
  • Page 300 HSU24VHJ DB Service Diagnosis 7.3.5 Thermistor or Related Abnormality(outdoor unit) Frost-removing temperature sensor failure Indoor display: outdoor display: LED1 flash 10 times: Exhaust temperature sensor failure Indoor display: outdoor display: LED1 flash 13 times: Ambient temperature sensor failure Indoor display: outdoor display: LED1 flash 12 times: Suck temperature sensor failure...
  • Page 301 HSU24VHJ DB Service Diagnosis 7.3.6 Overheat Protection For Exhaust Temperature Indoor display 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 compressor discharge temperature is above 117 Decision Conditions Supposed...
  • Page 302 HSU24VHJ DB Service Diagnosis Pull out the exhaust sensor and measure its The sensor is damaged. Replace the sensor resistance standard temperatures with a new one. according to the resistance-temperature table The sensor is damaged. Replace the sensor the results deviate with a new one.
  • Page 303 HSU24VHJ DB Service Diagnosis 7.3.8 Communication error between the indoor and outdoor units Indoor display 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 Malfunction When the date sent from the another unit cannot be received normally,or when the content...
  • Page 304 HSU24VHJ DB Service Diagnosis Check the status of LED1 on the indoor mainboard. If the LED1 blinks measure voltage between Jumpers 3 and 4 of IC8 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter.
  • Page 305 HSU24VHJ DB Service Diagnosis 7.3.10 Power Supply Over or under voltagve fault Indoor display 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 circuit to the microcomputer Decision Conditions...

  • Page 306: Loop Of The Station Detect Error

    HSU24VHJ DB Service Diagnosis 7.3.11 Loop of the station detect error Outdoor Display LED1 flash 18 times Indoor Display LED1 flash 19 times Indoor Display 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 connection is poor;...
  • Page 307 HSU24VHJ DB Service Diagnosis 7.3.12 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 damaged Conditions power supply.
  • Page 308 HSU24VHJ DB Service Diagnosis 7.3.13Fan Motor(DC Motor) or Related Abnormality Indoor Display LED1 flash 9 times 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 singal don’t receiced in 2 minutes Decision...
  • Page 309 HSU24VHJ DB Service Diagnosis Turn power supply and rotate fan by hand Does fan rotate Replace the motor smoothly? Turn power ON and operate fan Turn power supply disconnect motor connector,then turn power ON Does rotate? Check output of fan motor connector Is motor power voltage DC310V gengerated? Replace indoor unit PCB...

  • Page 310: Wiring Diagrams

    HSU24VHJ(DB) Wiring Diagrams 10.Wiring Diagrams 10.1. INDOORUNIT 0010528005 PIPING TEMP.SENSOR AMBIENT TEMP.SENSOR RECEIVER DISPLAY RECEIVER CN32 DISPLAY CN48 EMERGENCY SWITCH CN11 CON7 LOUVER MOTOR CON2 CON6 CON1 CON8 ION GENERATOR Domestic Air Conditioner...
  • Page 311 +689+- '% :LULQJ 'LDJUDPV 2XWGRRU XQLW &1 &1 &1 $&1 $&/ &1 &1 &1 &1 &1 &1 &1 &1 &1 &1 &1 0$,1 &21752/ %2$5' $&1 $&/ &1 &1 &1 &1 &1 &1 &1 &1 &1 &1 &1 5HPDUN WKH GRWWHG SDUWV DUH RSWLRQDO IRU GLIIHUHQW XQLW 'RPHVWLF $LU &RQGLWLRQHU...
  • Page 312 +689+- '% &LUFXLW 'LDJUDPV &LUFXLW 'LDJUDPV ,1'22581,7 P1 2SA1037AK CN48 R206 R74 2K CN32 TJC8-02 R40 10K CN32' MODE P4_5/INT0 4.7uF-50V 595-RCK P1_3/KI3/AN11 595-SER P3_6/(INT1) 4.7uF-50V TJC8-02 595-SCK RESET P3_0/TRAO R29 1K P0_5/AN2/CLK1 100uF-16V SWITCH P0_4/AN3 P1_0/KI0/AN8 dig1 0.1uF R26 1K 0.1uF dig2 P3_1/TRBO...
  • Page 313 +689+- '% &LUFXLW 'LDJUDPV +15V FR106(1A-600V-500ns) 10 -1/4W 1.5K-1/4W SCK084R72 10uF-25V-105 310V +12V L7805CV 1A BCK-6-FE1901H 1N4746A(18V-1W 220V-N 1N5399 ER302(3A-200V-35ns) +12V 1N5399 10 -1/4W FR106(1A-600V-500ns) 220V-L 0.1uF 0.1uF LB2271 (32mH-0.35A) 1000uF-35V-105 470uF-16V 1N5399 1N5399 220V-N 10 -1/4W IC10 1N4742A(12V-1W) ICE2A265 CON1 TLP421 TVR14561* 220V-N...
  • Page 314 +689+- '% &LUFXLW 'LDJUDPV 287'22581,7  PRGXOH ERDUG &LUFXLW 'LDJUDPV 5. 2MH/15A D207 FFA30U60DN PS21965-AT AC -L C405 C404 C406 SGH40N60UF 104/275V 474/275V 680U/400V*2 104/275V R215 D25B X60B 0. 015/5W 0. 015/5W AC -N R214 9 10 11 12 13 14 15 16 17 R225 D206 C023...
  • Page 315 +689+- '% &LUFXLW 'LDJUDPV +12V L7805CV E22034 102/100V Vout MBR3100\ER302 470U/25V 1K/0.5W 100U/16V 104/50V 472/1KV 104/50V ER106 +5VD 104/275V 20UH/1A MBR1100\SB1100 IN5948B 5.1K/1% 470U/25V 100U/16V 222/250VAC 220 220 R18 47 CN22 +15V R90 0 102/100V MUR115\MUR130\ER106 NCP1200P100 330/1W 470U/25V 104/50V 22U/25V 5.1K/1% IRFUC20 PC817A...
  • Page 316 +689+- '% &LUFXLW 'LDJUDPV CN26 220K/2W 105/275VAC 680U/400V/450V 680U/400V/450V LED2 POWER CN24 'RPHVWLF $LU &RQGLWLRQHU...
  • Page 317 HSU24VHJ-SM DC Inverter The series number H-heat pump Applicable voltage:V( Nominal cooling capacity(24000BTU/h)
  • Page 318 HSU24VHJ(DB)-SM The end Sincere Forever Haier Group Li JingVheng Cui Xiaogao Yang Bifei +86 532 88936935 W Hongjin...

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