Haier Arc Series Service Manual
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Haier Arc Series Service Manual

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  • Page 4: Safety Cautions

    HSU-24C03/Z HSU-24H03/Z 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-24C03/Z HSU-24H03/Z 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 7: Inspection After Repair

    HSU-24C03/Z HSU-24H03/Z 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 8: Using Icons List

    HSU-24C03/Z HSU-24H03/Z 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 Note: Note nevertheless be valuable to the reader, such as tips and tricks.

  • Page 12: Printed Circuit Board Connector Wiring Diagram

    24C03/Z HSU-24H03/Z 4. Printed Circuit Board Connector Wiring Diagram 4.1 Indoor Unit Connectors PCB1 control PCB 1) CN1 connector for ION unit 2) CN2 connector for DC fan motor 3) CN4 connector for N in the terminal block 4) CN7 connector for louver motor 5) CN8 connector for ambient temp.
  • Page 13 24C03/Z HSU-24H03/Z CN101 PCB2...
  • Page 17 Note: Sequence of defrosting actions: 9minutes ompressor Four-way valve Outdoor fan 1min 1min 5.1.7 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: Compressor ,outdoor fan Zone of return deference OFF after 5 minutes...

  • Page 20: Timer Function

    b.After setting the sleeping function, the heating mode will run as per the following rules: 1 hour 1 hour 3hours 3hours T( ) Ts-2 Ts-3 Ts-4 t(hour) Sleep As shown in the above diagram, after running for 1 hour under refrigerating mode and dehumidification mode, the setting temperature will increase 1 ;...
  • Page 23 HSU-24C03/Z HSU-24H03/Z Functions and Control 199.8093 181.4531 164.5813 -1.66 1.53 187.8698 170.9169 155.3033 -1.64 1.51 176.7176 161.0578 146.6059 -1.62 1.49 166.2961 151.8284 138.4495 -1.60 1.48 156.5532 143.1847 130.7973 -1.58 1.46 147.4409 135.0863 123.6153 -1.56 1.44 138.9148 127.4956 116.8717 -1.53 1.43 130.9337 120.3778 110.5374...
  • Page 24 HSU-24C03/Z HSU-24H03/Z Functions and Control 16.6885 15.9480 15.2217 -1.04 1.02 15.9825 15.2530 14.5389 -1.08 1.06 15.3103 14.5920 13.8903 -1.12 1.09 14.6700 13.9632 13.2743 -1.16 1.13 14.0599 13.3650 12.6889 -1.20 1.16 13.4786 12.7957 12.1325 -1.23 1.20 12.9244 12.2537 11.6035 -1.27 1.24 12.3960 11.7375 11.1004...
  • Page 25 HSU-24C03/Z HSU-24H03/Z Functions and Control 2.8796 2.6063 2.3560 -3.07 2.81 2.7845 2.5176 2.2735 -3.12 2.86 2.6931 2.4324 2.1943 -3.17 2.90 2.6050 2.3505 2.1182 -3.22 2.94 2.5203 2.2717 2.0451 -3.28 2.99 2.4388 2.1960 1.9749 -3.33 3.03 2.3602 2.1231 1.9075 -3.38 3.07 2.2846 2.0530 1.8426...
  • Page 26 HSU-24C03/Z HSU-24H03/Z Functions and Control Pipe Sensor R25 =10K B25 /50 =3700K Temp.(( )) Max.(KO) Normal(KO) Min.(KO) 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 27 HSU-24C03/Z HSU-24H03/Z Functions and Control 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...
  • Page 28 HSU-24C03/Z HSU-24H03/Z Functions and Control 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 2.0486...
  • Page 29 HSU-24C03/Z HSU-24H03/Z Functions and Control 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 0.5043 -4.80 4.31 0.6200 0.5518 0.4907...

  • Page 30: System Configuration

    HSU-24C03/Z HSU-24H03/Z 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 meet this expectation of the users, giving sufficient explanations taking enough time can be said to reduce about 80% of the requests for servicing.

  • Page 31: Safety Instructions And Warnings

    HSU-24C03/Z HSU-24H03/Z System Configuration 6.2 Instruction Cautions Disposal of the old air conditioner Safety Instructions and Warnings Before disposing an old air conditioner that Before starting the air conditioner, read the goes out of use, please make sure it's inop- information given in the User's Guide caref- erative and safe.

  • Page 32: Specifications

    HSU-24C03/Z HSU-24H03/Z System Configuration Cautions 7. The appliance is not intended for use Do not obstruct or cover the ventilation by young children or infirm persons grille of the air conditoner.Do not put fingers without supervision. or any other things into the inlet/outlet and swing louver.

  • Page 33: Safety Instruction

    HSU-24C03/Z HSU-24H03/Z System Configuration Cautions Safety Instruction Please read the following Safety Instructions carefully prior to use. The instructions are classified into two levels, WARNING and CAUTION according to the seriousness of possible risks and damages as follows. Compliance to the instructions are strictly required for safety use.
  • Page 34 HSU-24C03/Z HSU-24H03/Z System Configuration Cautions WARNING When abnormality such as burnt-small found, Use an exclusive power source with a immediately stop the operation button and circuit breaker contact sales shop. STRICT ENFORCEMENT Connect power supply cord Use the proper voltage Do not use power supply cord to the outlet completely extended or connected in halfway...
  • Page 35 HSU-24C03/Z HSU-24H03/Z System Configuration...
  • Page 52 HSU-24C03/Z HSU-24H03/Z Service Diagnosis 7.service diagnosis 7.1.caution for diagnosis 1. The operation lamp flashes when any of errors is detected. 2. when a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 7.2.Problem Symptoms and Measures Sympt m Check Item...
  • Page 53 HSU-24C03/Z HSU-24H03/Z Service Diagnosis 7.3.2Thermistor or Related Abnormality (indoor unit) QGRRU 'LVSOD\ Power timer operate 0HWKRG RI 0DOIXQFWLRQ the temperatures detected by the thermistors are used to determine hermistor errors 'HWHFWLRQ 0DOIXQFWLRQ when the thermistor input is more than 4.92V or less than 0.08V during compressor 'HFLVLRQ operation.

  • Page 54: Fan Motor(Dc Motor) Or Related Abnormality

    HSU-24C03/Z HSU-24H03/Z Service Diagnosis 7.3.3.Fan Motor(DC Motor) or Related Abnormality QGRRU 'LVSOD\ Code indication Power timer operate flash 0HWKRG RI The rotation speed detected by the Hall IC during fan motor operation is used to determine 0DOIXQFWLRQ abnormal fan motor operation 'HWHFWLRQ 0DOIXQFWLRQ when the detected rotation feedback signal don’t received in 2 minutes...
  • Page 55 HSU-24C03/Z HSU-24H03/Z Service Diagnosis Turn off power supply and rotate fan by hand Does rotate Replace fan motor smoothly? Check output motor connector and Turn power ON and operate fan Turn off power supply and disconnect Does it rotate? fan motor connector,then turn power Check output of fan motor connector Check rotation pulse input (pins 4-7).
  • Page 77 24C03/Z 24H03/Z...

  • Page 89: Circuit Diagram

    10.3. circuit Diagram 7805 Vout LCDÃæ° å 220UF/16V LM358 JTP 1236A 1N4148 Ó¦ ¼±° ´ ¼ü 24C01A 100UF/16V 9014 9014 5.1K +12V 2N5551 DC12V¸ º Àë ×Ó· ¢ Éú Æ ÷ 103N 5.1K Ô ¶³ Ì Í ¨ Ñ ¶ÊäÈë 100UF/16V R46 10K TMP87PH46N...

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