Haier HSU24VHJ(DB) Service Manual
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Haier HSU24VHJ(DB) Service Manual

Haier HSU24VHJ(DB) Service Manual

Wall mounted type dc inverter ea-series
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SERVICE MANUAL

Order No.AC1101S021V0

Wall mounted Type

DC Inverter EA-Series
Model No. HSU24VHJ(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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Summary of Contents for Haier HSU24VHJ(DB)

  • Page 1: Service Manual

    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: Table Of Contents

    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 3: Safety Cautions

    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 4: Cautions Regarding Products After Repair

    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 5 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 6: Inspection After Repair

    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 7 HSU24VHJ(DB)-SM...
  • Page 8 HSU09VHJ(DB)

  • Page 9: 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 10 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 11: 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 12 HSU24VHJ DB Connector Wiring Diagram PCB(1) CN32 CN11 CN48 CON6 CON8 CON1 CON2 CN26 Domestic Air Conditioner...
  • Page 13 HSU24VHJ DB Connector Wiring Diagram Domestic Air Conditioner...

  • Page 14: 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 15 HSU24VHJ DB Connector Wiring Diagram PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 CN25 Domestic Air Conditioner...
  • Page 16 HSU24VHJ DB Connector Wiring Diagram PCB(2) CN11 CN10 Domestic Air Conditioner...

  • Page 17: 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 18: Main Functions

    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 19: Special Functions

    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 20 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 21 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 22 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 23: Main Functions And Control Specifications Of Outdoor Unit

    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 24: Outdoor Fan Control

    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 25 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 26 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 27 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 28: Function Of Main Thermistor

    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 29: Value Of Thermistor

    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 30 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 31 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 32 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 33 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 34 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 35 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 36 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 37 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 38 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 39 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 40 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 41 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 42 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 43 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 44 HSU24VHJ(DB)-SM...

  • Page 45: Parts And Functions

    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 46: Clock Set

    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 47: Sleep Operation

    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 48 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 49: Air Filter Cleaning

    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 50 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 51: Trouble Shooting

    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 52: Service Diagnosis

    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 53: Error Codes And Description Indoor Display

    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 54 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 55 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 56 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 57: Ipm Protection

    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 58 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 59 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 60 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 61 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 62 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 63 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 64 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 65 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 66 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 67 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 68 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 69: Installation Manual Of Room Air Conditioner

    HSU24VHJ(DB)-SM Installation Installation Manual of Room Air Conditioner Preparation Selection of Installation Place Necessary Tools for Installation Indoor Unit - Select a location that is Torque wrench Hammer (17mm,22mm,26mm) Nipper Robust not causing vibration, where the body can be supported s Hacksaw Pipe cutter Not affected by heat or steam generated in the vicinity, where inlet and outlet of the...
  • Page 70 HSU24VHJ(DB)-SM Installation [ Left · Left-rear piping ] Accessory parts In case of left side piping, cut away, with a nipper, the lid for left piping. In case of left-rear piping, bend the pipes according to the piping direction to Drain hose (1) Remote controller (1) the mark of hole for left-rear piping which is marked on heat insulation materials.
  • Page 71 HSU24VHJ(DB)-SM Installation Ensure that no dirt or debris enters the pipe. Outdoor unit The standard pipe length is 7m (27 9/16) . If it is over 7m (27 9/16) , the function of the unit will be affected. If the pipe has to be lengthened, the refrigerant should Indoor uni t be charged, according to 20 g/m (0.018 oz/inch).
  • Page 72 HSU24VHJ(DB)-SM Installation No gas leakage? On Drainage In case of gas leakage, tighten parts of pipe connection. If leakage stops, Please install the drain hose so as to be downward slope without fail. then proceed Please don’t do the drainage as shown below. Detach the charge hose from the service port, open 2-way valve and 3-way.

  • Page 73: Removal Of Procedure

    HSU24VHJ(DB) RemovalProcedure 9 Removal of Procedure 9.1 Removal of Procedure of HSM24HEA03/R2(DB) indoor unit 9.11 Removal of Front panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1.
  • Page 74 HSU24VHJ(DB) RemovalProcedure Step Lift an air filter upwards slightly and then pull it out downwards. Insert the air filters along grooves when installing. When installing, insert 2 hooks of the air filter completely. Domestic air conditioner...
  • Page 75 HSU24VHJ(DB) RemovalProcedure 9.13 Removal of Horizontal Blade and Front Grill Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the horizontal The horizontal blade is blade.
  • Page 76 HSU24VHJ(DB) RemovalProcedure Step Loosen the marked f ive screws Release the marked four hooks. When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught prop e rly. Domestic air conditioner...
  • Page 77 HSU24VHJ(DB) RemovalProcedure 9.14 Removal of Drain Pan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the front grille. Remove the assembly of the reduction motor. 1.
  • Page 78 HSU24VHJ(DB) RemovalProcedure 9.15 Removal of Vertical Blade and Swing Motor 9.15 Removal of Vertical Blade and Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
  • Page 79 HSU24VHJ(DB) RemovalProcedure 9.16 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the front grille. Discharge the static electricity from your body 1.
  • Page 80 HSU24VHJ(DB) RemovalProcedure 9.17 Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points You can detach the indoor unit without removing the assembly of the outlet grille. Loosen the screws Caution fixed to the installation...
  • Page 81 HSU24VHJ(DB) RemovalProcedure 9.18 Removal of Fan and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the 6 screws. Remove the right side plate. Domestic air conditioner...
  • Page 82 HSU24VHJ(DB) RemovalProcedure 9.2 Removal of Procedure 9.21 Removal of Front panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step 1. Remove the front panel. Open the front panel to the horizontal position.
  • Page 83 HSU24VHJ(DB) RemovalProcedure Step Procedure Points Lift an air filter upwards slightly and then pull it out downwards. Insert the air filters along grooves when installing. When installing, insert 2 hooks of the air filter completely. Domestic air conditioner...
  • Page 84 HSU24VHJ(DB) RemovalProcedure 9.23 Removal of Horizontal Blade and Front Grill Step Loosen the marked f ive screws Release the marked four hooks. When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught prop erly.
  • Page 85 HSU24VHJ(DB) RemovalProcedure Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 2. Remove the horizontal The horizontal blade is blade. single. Release the center pivot. blade Installation procedure 1.
  • Page 86 HSU24VHJ(DB) RemovalProcedure Step Procedure Points Pull the front grille out horizontally and remove When assembling, install the front grille horizontally so as not to stuff the flap inside. When assembling, make sure the three hooks are caught properly. Domestic air conditioner...
  • Page 87 HSU24VHJ(DB) RemovalProcedure Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the front grille. Remove the assembly of the reduction motor. 1. Remove the Drain pan. Loosen the marked screws under the screw covers...
  • Page 88 HSU24VHJ(DB) RemovalProcedure 9.25 Removal of Vertical Blade and Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the marked screws Push the hooks on the back of the vertical blades and remove.
  • Page 89 HSU24VHJ(DB) RemovalProcedure 9.26 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. before disassembling work.
  • Page 90 HSU24VHJ(DB) RemovalProcedure 9.27 Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points You can detach the indoor unit without removing the assembly of the outlet grille. Loosen the screws Caution fixed to the installation...
  • Page 91 HSU24VHJ(DB) RemovalProcedure 9.28 Removal of Fan and Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the 6 screws. Remove the right side plate. Domestic air conditioner...

  • Page 92: The Removal Procedure Of Outdoor

    Removal of procedure HSU24VHJ(DB) 9.2 The removal procedure of outdoor 9.2.1 Removal of Outdoor panel Step Procedure Points 1. Features Loosen the service Be careful not to cover screw and remove the service cover. Domestic air conditioner...
  • Page 93 Removal of procedure HSU24VHJ(DB) Step Procedure Points 2. Remove the panels. Loosen the 4 screws and lift the top panel Loosen the screws of the panel. Pull and remove the front panel. Domestic air conditioner...
  • Page 94 Removal of procedure Removal of procedure 9.2.2 Romoval of Electrcal Box Step Procedure Points screws, then lift the electrical box Domestic air conditioner...
  • Page 95 Removal of procedure Removal of procedure 9.2.3 Romoval of the Side panel Step Procedure Points screws and remove the side panel. Domestic air conditioner...
  • Page 96 Removal of procedure Removal of procedure Step Procedure Points Remove the screws and remove the side panel. Domestic air conditioner...

  • Page 97: Removal Of Fan And Fan Motor

    Removal of procedure Removal of procedure 9.2.4 Removal of fan and fan motor Step Procedure Points Put the lead wire Loosen the of motor when remove the fan the propeller fan) Domestic air conditioner...
  • Page 98 Removal of procedure Removal of procedure Step Procedure Points screws and lift the fan motor. Domestic air conditioner...
  • Page 99 Removal of procedure Removal of procedure Step Procedure Points screws, then lift the Domestic air conditioner...
  • Page 100 Removal of procedure Removal of procedure Step Procedure Points screws, then lift the proof plate. Domestic air conditioner...
  • Page 101 Removal of procedure Removal of procedure Step Procedure Points Cut down the and pull out the compressor and remove the Domestic air conditioner...
  • Page 102 Removal of procedure Removal of procedure Step Procedure Points Domestic air conditioner...
  • Page 103 Removal of procedure Removal of procedure Step Procedure Points Domestic air conditioner...
  • Page 104 Removal of procedure Removal of procedure Step Procedure Points Remove the Domestic air conditioner...

  • Page 105: 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 106 +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 107 +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 108 +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 109 +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 110 +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 111 +689+- '% &LUFXLW 'LDJUDPV CN26 220K/2W 105/275VAC 680U/400V/450V 680U/400V/450V LED2 POWER CN24 'RPHVWLF $LU &RQGLWLRQHU...
  • Page 112 HSU24VHJ-SM DC Inverter The series number H-heat pump Applicable voltage:V( Nominal cooling capacity(24000BTU/h)
  • Page 113 HSU24VHJ(DB)-SM The end Sincere Forever Haier Group Li JingVheng Cui Xiaogao Yang Bifei +86 532 88936935 W Hongjin...

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