Haier HSU-07C03 Service Manual
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Haier HSU-07C03 Service Manual

Haier HSU-07C03 Service Manual

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Summary of Contents for Haier HSU-07C03

  • Page 1 ON/OFF HSU-07C03...
  • Page 3 07C03...

  • Page 4: Safety Cautions

    HSU-07C03 Introduction 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 5: Cautions Regarding Products After Repair

    HSU-07C03 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 6 HSU-07C03 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.

  • Page 7: Inspection After Repair

    HSU-07C03 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.

  • Page 8: Using Icons List

    HSU-07C03 Introduction 1.1.4 Using Icons Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in the table below: 1.1.5 Using Icons List Icon Type of Information Description A “note” provides information that is not indispensable, but may...
  • Page 12 07C03 1.1 Indoor unit Connectors 1) CN1 connector for transformer primary coil 2) CN2 connector for terminal block 3) CN3 connector for ransformer secondary coil 4) CN5 connector for louver motor 5) CN6 connector for ambient temp. sensor and piping temp.sensor 6) CN7 connector for receiver dislay 7) CN8 connector for indoor AC fan motor 8) CN9 connector for indoor AC fan motor...
  • Page 13 07C03 Other designations...
  • Page 14 07C03 Including brief introduction to air conditioners of series models and electric control function. 5-1 Brief introduction to electric control function 5-1-1 Automatic running When the running mode is turned to automation after starting the system, the system will first determine the running mode according to the current room temperature and then will run according to the determined mode.
  • Page 15 07C03 5-1-4 Freezing prevention function Under refrigerating and dehumidifying state, the air conditioner will control the outdoor fan as per the temperature Tp of the indoor coil pipe according to the following conditions: Zone of return deference Compressor,outdoor fan OFF after 5 minutes Fan,compressor ON 5-1-5 3 minutes stand-by time When the compressor ceases due to the sensor OFF, unit On or OFF or fault, it will maintain...

  • Page 16: Sleeping Function

    07C03 5-1-9 Sleeping function 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+2 Ts+1 Sleep t(hour) As shown in the above diagram, after running for 1 hour under refrigerating mode and dehumidification mode, the setting temperature will increase 1 ;...

  • Page 17: Function Of Main Thermistor

    07C03 5-2 Function of Main Thermistor Note: A: Indoor heat-exchange sensor Indoor heat-exchange sensor The indoor heat exchanger thermistor is used for anti-icing control .During the cooling operation, if the heat exchanger temperature in the room where operation is halted becomes 0°C, it is assumed as icing.

  • Page 18: Value Of Thermistor

    7C03 5.3 Value of Thermistor Indoor 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 363.3602...
  • Page 19 7C03 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 -1.05 1.02 41.1592 39.1381 37.1708 -1.03 1.00 39.0998 37.2355...
  • Page 20 7C03 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 21 7C03 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 0.9860 -4.47 3.98 1.2310 1.0853...
  • Page 22 7C03 Pipe 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 111.8256 -1.89 1.71 130.2371 117.4366 105.7989 -1.87...
  • Page 23 7C03 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 12.9017 -0.91 0.90 13.3431 12.8572 12.3778 -0.88 0.87 12.7718 12.3223...
  • Page 24 7C03 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 2.2700 -2.26 2.13 2.5396 2.3611 2.1932 -2.31 2.17 2.4591 2.2840 2.1195 -2.36 2.21 2.3815 2.2098...
  • Page 25 7C03 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 0.5632 -4.57 4.12 0.6877 0.6140 0.5478 -4.63 4.16 0.6700 0.5977 0.5328 -4.69 4.21 0.6528 0.5820 0.5183 -4.74 4.26 0.6361 0.5667...

  • Page 26: System Configuration

    HSU-07C03 System Configuration 6. System Configuration 6.1 System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.In order to...
  • Page 27 HSU-07C03 System Configuration 6.2 Instruction Cautions The machine is adaptive in following situation I. Applicable ambient temperature range: Maximum: D.B / W.B C/23 Indoor Minimum: D.B / W.B C/14 Cooling Maximum: D.B C/26 Outdoor Minimum: D.B Maximum: D.B Indoor Minimum: D.B Heating Maximum: D.B / W.B...

  • Page 28: Parts And Functions

    HSU-07C03 System Configuration Parts and Functions Indoor Unit Test running switch(manual) Used only for test running in cooling Inlet grille when room temp. is below 16 Don't use it in normal operation. Inlet Emergency switch(manual) Used when remote controller is lost or Air Purifying Filter defective.

  • Page 42: Troubleshooting

    7-1.Problem Symptoms and Measures Code indication Power timer Description operate Room temperature sensor failure Indoor Malfunction Heat-exchange sensor failure Indoor EEPROM error Indoor fan motor malfunction repeate the cycle. on flash off explaination Trouble Shooting Indoor Malfunction Thermistor or Related Abnormality (indoor unit) the temperatures detected by the thermistors are used to determine hermistor errors when the thermistor input is more than 4.92V or less than 0.08V during compressor operation.

  • Page 43: Fan Motor Or Related Abnormality

    Fan Motor or Related Abnormality The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation when the detected rotation feedback singal don’t receiced in 2 minutes Operation halt due to breaking of wire inside the fan motor . Operation halt due to breaking of the fan motor lead wires Dedection error due to faulty indoor unit PCB Indoor fan motor malfunction...
  • Page 45 The EEPROM Abnormality (indoor unit) the Data detected by the EEPROM are used to determine MCU when the Data of EEPROM is error or the EEPROM is damaged Faulty EEPROM data Faulty EEPROM Faulty PCB Troubleshooting Be sure to turn off power switch before connect or disconnect connector, parts damage may be occurred.

  • Page 46: Necessary Tools For Installation

    07C03 8 Installation Read this manual before installation Explain sufficiently the operating means to the user according to this manual. Necessary Tools for Installation 1.Driver 5.Torque wrench(17mm,22mm,26mm) 9.Nipper 12.Reamer 2.Hacksaw 6.Pipe cutter 10.Gas leakage detector or 3.Hole core drill 7.Flaring tool soap-and-water solution 4.Spanner(17,19 and 26mm) 8.Knife...

  • Page 47: Selection Of Installation Place

    07C03 Floor fixing dimensions Floor fixing dimensions of the outdoor unit of the outdoor unit (Unit:mm) (Unit:mm) HSU-05C03 HSU-07LD03 HSU-07C03 HSU-07LD03C HSU-05C03C HSU-07C03C HSU-18CK03 HSU-12LD03 HSU-18CK03C HSU-09LD03 HSU-12LD03C HEC-18C03 HSU-09LD03C HEC-05C03 HEC-07C03 Fix the unit to concrete or block with bolts( 10mm) and nuts firmly and horizontally.

  • Page 48: Indoor Unit

    07C03 Indoor unit 1.Fitting of the Mounting Plate and Positioning of the wall Hole When the mounting plate is first fixed 1.Carry out, based on the neighboring pillars or lintels, a proper leveling for the plate to be fixed against the wall, then temporarily fasten the plate with one steel nail. 2.
  • Page 49 07C03...
  • Page 50 2. If the fuse on PC board is broken please change it with the type of T. 3.15A/250V. 3. The wiring method should be in line with the local wiring standard. 4. After installation, the power plug should be easily reached. Power cable: -mod 05-07-09-12: more than 3G1.5mm 3G1.0mm -mod 18: 3G1.5mm or 3G2.5mm HSU-05C03 HSU-07C03...

  • Page 51: Installation Of Outdoor Unit

    07C03 Outdoor unit 1.Installation of Outdoor Unit Drawing for the installation of indoor and outdoor units Install according to 2.Connection of pipes To bend a pipe, give the roundness as large as possible not to crush the pipe. Connecting the pipe of gas side first makes working easier. The max vertical distance between the indoor unit and the outdoor unit is 5 m.
  • Page 52 20-25 HSU-09LD03 HSU-09LD03C HSU-12LD03 HSU-12LD03C HSU-05C03 HSU-05C03C HSU-07C03 HSU-07C03C When connecting pipe exceeds 5 meters, 16g refrigerant shall be added per exceeding meter. Charge according to the following list. Piping length Additional amount No need Note: When extending piping, air inside piping shall be removed by using external refrigerant gas, then discharge excess refrigerant by air purging.

  • Page 53: Power Source Installation

    07C03 1.Power Source Installation The power source must be exclusively used for air conditioner. (Over I0A) In the case of installing an air conditioner in a moist place, please install an earth leakage breaker. For installation in other places, use a circuit breaker as far as possible. 2.Cutting and Flaring Work of Piping Pipe cutting is carried out with a pipe cutter and burs must be removed.
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  • Page 75: Piping Diagrams

    HSU-07C03 Appendix 10. Appendix 10.1 Piping Diagrams...

  • Page 77: Circuit Diagrams

    HSU-07C03 Appendix 10.3 Circuit Diagrams Indoor Unit +12V 7805 9012 4007 Vout 4007 4007 104/250V 4007 1000UF/25V 220UF/16V TRANS 4007 9013 4.7K 4148 4.7K 50HZ 4148 HEAT 220UF/16V +12V 4148 4148 100UF/16V A057R 4007 4148 PIPE PIPE HEAT +12V 4.7K...
  • Page 78 HSU-07C03 The End Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road Edited by: Zhao Jicheng 266101, Qingdao, China E-mail: hractech@haier.com Signed by: Yang Bifei Tel: +86 532 87636957 Http://www.haier.com Approved by: Zhu Zhenxue Domestic Air Conditioner...

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