Haier HSU12VHG-B Service Manual
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Haier HSU12VHG-B Service Manual

Wall mounted type dc inverter ek-series
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SERVICE MANUAL
Order No. AC1S00V0
Wall mounted Type
DC Inverter EK-Series
Model No.HSU129HG(DB)* :
outdoor unit
indoor unit and remote controller
201
Haier Group
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Summary of Contents for Haier HSU12VHG-B

  • Page 1 SERVICE MANUAL Order No. AC1S00V0 Wall mounted Type DC Inverter EK-Series Model No.HSU129HG(DB)* : outdoor unit indoor unit and remote controller 201 Haier Group...
  • Page 2 HSU129HG(DB)-SM of indoor unit main function and control specification of outdoor unit Removal of Air Filter Removal of Front panel ……………………………… Horiaontal Blade and Front Grill ………………………………………………………… Drain pan ……………………………… Vertical Blades and Swing Motor …………………………………………………… ………………………………………………… ………………………………………...
  • Page 3 HSU129HG(DB)-SM …………………………………………………… Removal of Outdoor panel …………………………………………………… 9.10 Removal of Electrical Box ……………………………………………… 9.11 Removal of Fan and Fan motor ……………………………… Removal of fan motor bracted and partition 9.12 ……………………………… Removal of compressor and heat exchanger 9.13 ……………………………………………………………… Wiring Diagrams ……………………………………………………………………...

  • Page 4: Safety Cautions

    HSU129HG03(DB)-SM 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 HSU129HG(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 6 HSU129HG(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 7 HSU129HG(DB)-SM Introduction Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site, to prevent electrical shocks. Do not install the equipment in a place where there is a possibility of combustible gas leaks. If a combustible gas leaks and remains around the unit, it can cause a fire.
  • Page 8 Introduction Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.
  • Page 9 HSU129HG(DB)-SM HSU-12HEG03/R2(DB) Functions Category make your room full of an abundance natural negative ions. Healthy negative ion Avoid the child's wrong operation on the remote controller Child lock The 3D airflow is able to deliver the airflow horizontally and vertically. 3D air flow Use the timer function to set on,or off,or from on to off,or from off to on 24Hour timer...

  • Page 10: Specifications

    HSU129HG(DB)-SM 3.Specifications HSU-12HEG03/R2(DB) 3.5(1.4 ~3.9) 3.7(1.5~4.1) 11950(4780-13300) 12630(5120-13990) 3010(1204~3354) 3182(1290~3526) pints/hr 2.82 920(350~1350) 960(370~1350) 3.85 inches inches inches feet 49 1/5 feet 32 4/5 feet 22 28/29 OZ/Inches 0.018 10.7 11.1 0.15 0.15 inches 36 13 /14 X 10 3/7 X7 1/3 inches 40 X 14 1/6 X11 92/95 23.1...
  • Page 11 HSU129HG(DB)-SM DA89X1C-20FZ ESTER OIL VG74 pints 0.65 R410a 33.3 33.3 1175 1175 inches 25 12/61 x 30 5/7 x 9 2/3 inches 28 1/9 X 36 3/5 X13 27/70 78.3 84.9 53/- 53/- feet 16 2/5...

  • Page 12: Printed Circuit Board Connector Wiring Diagram

    HSU129HG(DB)-SM Connector Wring Diagram 4.Printed Circuit Board Connector Wiring Diagram 4.1 Indoor unit Connectors Connectors PCB(1) (Control PCB) For HSU-12HEG03/R2(DB) 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 13 HSU129HG(DB)-SM Wiring Diagrams PCB(1) CN26 CN27 CN11 CN32 CN20 CON1 CON2 CON6 CN34 CON8 CON7 Domestic Air Conditioner...
  • Page 14 WiringDiagrams HSU129HG(DB)-SM 4.2: outdoor unit Connectors PCB(1) (Control PCB) 1) CN1,CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN22 Connector for DC POWER 15Vand 5V to the module board 4) CN9,CN8 Connector for CN2,CN1 on the module board 5) CN21 Connector for fan motor 6) CN10 Connector for four way valve coil 7) CN17,CN18,CN19, CN20 Connector for thermistors...
  • Page 15 HSU129HG(DB)-SM Wiring Diagrams PCB(1) CN26 CN24 CN23 CN22 CN21 CN17 CN18 CN19 CN20 CN16 CN10 Domestic Air Conditioner...
  • Page 16 HSU129HG(DB)-SM Connector Wring Diagram PCB(2) CN11 CN10 Domestic Air Conditioner...

  • Page 17: Automatic Operation

    HSU129HG(DB)-SM Wiring Diagrams 5.Funcitions and Control 5.1 Main functions and control specification of indoor unit 5.1.1 Automatic operation 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 18 HSU129HG(DB)-SM Wiring Diagrams 5.1.3 Demoisture mode. * temperature control range: 16---30 * temperature difference: Control feature: send the demoisture signal to the outdoor system. When Tr>Ts+2 , the compressor will be turned on, the indoor fan will operate at the set speed. When Tr is between the Ts and Ts+2 , the outdoor system will operate at the high demoisture frequency for 10 minutes and then at the low demoisture mode for six minutes.
  • Page 19 HSU129HG(DB)-SM Wiring Diagrams *Indoor fan control manual control: You can choose high, medium, low and automatic speed control. Automatic: When Tr Ts+2 , low speed. When the airflow speed has no delay from the high to low switching, the speed should be delayed for 3 minutes (remain at high speed for 3 minutes.) before the next switch.

  • Page 20: Mute Operation

    HSU129HG(DB)-SM Wiring Diagrams 5.1.5 strength operation a. the system enters the mode after receiving the ‘strength signal’. Send strength operation signal to the outdoor system. The mode change finishes the strength operation. Entering ‘mute’, you can have normal operation or signal control such as timing to finish the strength operation.
  • Page 21 HSU129HG(DB)-SM Wiring Diagrams 5.1.9 Dormant operation The dormant timing is an eight hours unadaptable one. The timing signs are shown on the V series board. (RC series show the dormant signal, the timing light is lighted on the 6 lights board). 2.1 Under the cooling/ demoisture operation, after the setting of the dormant operation, the set temperature will be raised for 1 centigrade after 1 hour’s operation and will be raised for 1 centigrade 1 hour later.
  • Page 22 HSU129HG(DB)-SM Wiring Diagrams 5.1.11 Low load protection control In order to prevent the frosting of the indoor heat interaction device, the outdoor system will be stopped if the indoor heat interaction temperature is below zero centigrade for 5 minutes, but the fan will continue to operate.

  • Page 23: Fixed Frequency Operation

    HSU129HG(DB)-SM Wiring Diagrams 2 .indoor heat interaction sensor abnormality: under the operation, the normal temperature ranges from 120 degree to -30 degree. When the temperature goes beyond this range, the abnormality can be confirmed. If the temperature goes back into the range, the system will automatically resume. 3 .indoor malfunction: Out door malfunction: When the indoor system receives the outdoor malfunction codes, it will store the code into E2 for the malfunction list resume.

  • Page 24: Test Program

    HSU129HG(DB)-SM Wiring Diagrams 2. Fixed heating: a. under G code condition: high speed heating, set 30 , press temperature ‘+‘ key and the set key at the same time. The system will enter the fixed frequency operation after the buzzer rings twice.
  • Page 25 HSU129HG(DB)-SM Wiring Diagrams 5.2.1.3 The speeds of increasing or decreasing the frequency of the compressor The speed of increasing or decreasing the frequency rapidly 1 -----------1HZ/second The speed of increasing or decreasing the frequency slowly 2 -----------1HZ/10seconds 5.2.1.4 The calculation of the compressor’s frequency The minimum/maximum frequency limitation A While refrigerating: is the maximum operation frequency of the compressor;...
  • Page 26 HSU129HG(DB)-SM Wiring Diagrams Heating mode ≥ <1 The percentage of the 100% 140% 160% rated frequency P K= Ki/the number of running machines The indoor set Breeze Medium High Strong Quiet Healthy airflow speed airflow The percentage 100% 180% rated frequency Ki The calculation of the actual output frequency: when there is no healthy airflow: F =F-ED-* P K When the healthy airflow has been set: F =F-ED-* P K airflow speed...

  • Page 27: Protection Function

    HSU129HG(DB)-SM Wiring Diagrams 5.2.3 The control of the outdoor electronic expansion valve When starting the compressor: the opening size of the valve must be guaranteed to have entered into the standard opening size, and then the compressor can be started. When refrigeration is in vain (the machine is shut down or is in the state of retrograde operation), the opening size of the expansion valve of the indoor unit is 5 steps;...
  • Page 28 HSU129HG(DB)-SM Wiring Diagrams 5.2.5.2 TC high temperature-preventing control of the indoor heating unit Tpg_indoor is the highest value of the effective indoor unit (start it and it is in accord with the running state). The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If the temperature is higher than 55 , decrease the rotate speed of the compressor and do the high temperature-preventing protection of the indoor heat exchanger;...
  • Page 29 HSU129HG(DB)-SM Wiring Diagrams 5.2.5.4 The protection function of AC current: During the starting process of the compressor, if the AC current is greater than 15A, the frequency of the compressor decreases at the speed of 1HZ/second. During the starting process of the compressor, if the AC current is greater than 13A, the frequency of the compressor decreases at the speed of 0.1HZ/second.
  • Page 30 HSU129HG(DB)-SM Wiring Diagrams 5.2.5.6 The frequency limitation of modification rate In the field which is controlled by high frequency, if the modification rate is not high enough, the control-driven chip will enter into weak magnetic control, this will help to relieve the problem of modification rate.
  • Page 31 HSU129HG(DB)-SM Wiring Diagrams ---- Loop of the station detect error High work-intense protection Overcurrent of the compressor Overcurrent protection for single-phase of the compressor ---- The socket protect 5.3 Value of Thermistor 5.3.1 intdoor Unit Room sensor and Pipe Sensor R25 =10K B25 /50 =3700K 3% Temp.(( ))
  • Page 32 HSU129HG(DB)-SM Wiring Diagrams 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 -1.25 1.20 25.3193 23.9462 22.6273 -1.23 1.18 24.1432 22.8656 21.6361 -1.20 1.16 23.0284 21.8398 20.6939 -1.18 1.14 21.9714 20.8659 19.7982 -1.15 1.12 20.9688 19.9409 18.9463 -1.13 1.09...
  • Page 33 HSU129HG(DB)-SM Wiring Diagrams 4.5083 4.2666 4.0342 -1.57 1.51 4.3524 4.1145 3.8862 -1.61 1.55 4.2026 3.9686 3.7443 -1.65 1.59 4.0588 3.8287 3.6084 -1.70 1.62 3.9206 3.6943 3.4780 -1.74 1.66 3.7878 3.5654 3.3531 -1.78 1.70 3.6601 3.4416 3.2332 -1.82 1.74 3.5374 3.3227 3.1183 -1.87 1.78...

  • Page 34: Outdoor Unit

    HSU129HG(DB)-SM Wiring Diagrams 1.0910 0.9882 0.8942 -3.69 3.37 1.0607 0.9599 0.8679 -3.74 3.42 1.0314 0.9326 0.8424 -3.80 3.46 1.0030 0.9061 0.8179 -3.85 3.51 0.9756 0.8806 0.7941 -3.90 3.55 0.9490 0.8558 0.7711 -3.96 3.60 0.9232 0.8319 0.7489 -4.01 3.64 0.8983 0.8088 0.7275 -4.07 3.69...
  • Page 35 HSU129HG(DB)-SM Wiring Diagrams 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 -1.64 1.52...
  • Page 36 HSU129HG(DB)-SM Wiring Diagrams 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 -0.91 0.90 8.1371 7.8428 7.5522 -0.95 0.93...
  • Page 37 HSU129HG(DB)-SM Wiring Diagrams 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 -2.78 2.58 1.7974 1.6533 1.5194 -2.83 2.63 1.7434 1.6021 1.4710 -2.88 2.67...
  • Page 38 HSU129HG(DB)-SM Wiring Diagrams 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 -5.16 4.60 0.5325 0.4717 0.4175 -5.22 4.65 0.5194 0.4597 0.4066 -5.28 4.70 Discharging Sensor R80 =50K B25/80 =4450K 3% Max.(KΩ)
  • Page 39 HSU129HG(DB)-SM Wiring Diagrams 1932.0242 1687.8144 1473.1460 -2.50 2.20 1825.0899 1597.0431 1396.2333 -2.48 2.19 1724.6540 1511.6468 1323.7551 -2.47 2.17 1630.2870 1431.2787 1255.4324 -2.45 2.16 1541.5904 1355.6163 1191.0048 -2.43 2.15 1458.1938 1284.3593 1130.2298 -2.41 2.14 1379.7528 1217.2282 1072.8813 -2.40 2.13 1305.9472 1153.9626 1018.7481 -2.38 2.12...
  • Page 40 HSU129HG(DB)-SM Wiring Diagrams 199.6531 186.3369 173.7524 -1.63 1.54 190.9639 178.4584 166.6217 -1.60 1.52 182.6945 170.9508 159.8181 -1.58 1.50 174.8228 163.7951 153.3249 -1.56 1.48 167.3280 156.9733 147.1268 -1.53 1.46 160.1904 150.4683 141.2090 -1.51 1.44 153.3914 144.2641 135.5577 -1.49 1.42 146.9136 138.3454 130.1598 -1.47 1.40...
  • Page 41 HSU129HG(DB)-SM Wiring Diagrams 34.0269 32.6151 31.2338 -1.26 1.23 32.9075 31.5096 30.1438 -1.30 1.27 31.8302 30.4467 29.0970 -1.33 1.30 30.7933 29.4246 28.0915 -1.37 1.34 29.7950 28.4417 27.1254 -1.41 1.37 28.8337 27.4961 26.1970 -1.45 1.41 27.9078 26.5864 25.3048 -1.49 1.44 27.0160 25.7110 24.4470 -1.53 1.48...
  • Page 42 HSU129HG(DB)-SM Wiring Diagrams 8.7404 8.0329 7.3760 -3.19 2.96 8.5059 7.8108 7.1660 -3.24 3.00 8.2787 7.5958 6.9629 -3.29 3.04 8.0584 7.3875 6.7664 -3.33 3.09 Domestic Air Conditioner...
  • Page 43 HSU129HG(DB)-SM System Configuration Domestic Air Conditioner...

  • Page 44: Parts And Functions

    HSU129HG(DB)-SM Introduction Parts and Functions Indoor Unit Remote controller 7.TEMP display 8.POWER/SOFT display 9. HEALTH display 10. QUIET button 11. HEAT button 12. COOL button 13. AUTO button 14. FAN button 15. TIMER button 16. HEALTH button 17. LOCK button Used to lock buttons and LCD display 18.
  • Page 45 HSU129HG(DB)-SM Introduction Parts and Functions Loading of the battery Outdoor Unit Remove the battery cover; Load the batteries as illustrated. 2 R-03 batteries, resetting key (cylinder); Be sure that the loading e" + "/"-"; is in line with th Load the battery,then put on the cover again. Note: The distance between the signal transmission head and the rece- iver hole should be within 7m without any obstacle as well.

  • Page 46: Base Operation

    HSU129HG(DB)-SM Introduction Operation Base Operation Emergency operation and test operation Emergency Operation: Use this operation only when the remote controller is defective or lost, and with function of emergency running, air conditoner Remote controller can run automatically for a while. When the emergency operation switch is pressed, the "...

  • Page 47: Sleep Operation

    HSU129HG(DB)-SM Introduction Operation Sleep Operation 4. In FAN mode Before going to bed,you can simply press the SLEEP It has no SLEEP function. button and unit will operate in SLEEP mode and bring 5.Set the wind speed change when sleeping you a sound sleep.
  • Page 48 HSU129HG(DB)-SM Introduction EUROPEAN REGULATIONS Operation CONFORMITY FOR THE MODELS Timer On/Off On-Off Operation All the products are in conformity with the following European provision: Set clock correctly before starting TIMER operation. - Low Voltage Directive 73/23/EEC 1.After unit starts, select your desired operation mode. - Low Voltage Directive 2006/95/EC 2.Press TIMER button to change TIMER mode.

  • Page 49: Maintenance

    HSU129HEG(DB)-SM Introduction 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 temperature soft and dry cloth.For serious stains, use a neutral detergent diluted with Do not usewater,wipe the controller water.Wring the water out of the...
  • Page 50 HSU129HG(DB)-SM Introduction 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 installation of the...

  • Page 51: Troubleshooting

    HSU129HG(DB)-SM Introduction Trouble shooting Cautions Before asking for service, check the following grille of the air Do not obstruct or cover the ventilation 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

    HSU129HG(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. 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 HSU129HG(DB)-SM Service Diagnosis 7.3 Error Codes and Description indoor display Code indication Reference Outdoor Description Page Indoor (LED1 flash times) Communication fault between indoor and Page .59 Indoor Outdoor outdoor units Room temperature sensor failure Page .51 Heat-exchange sensor failure Page .51 Indoor Malfunction Indoor EEPROM error...

  • Page 54: Thermistor Or Related Abnormality

    HSU129HG(DB)-SM Service Diagnosis 7.3.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Outdoor display LED1 flash 10 times Defrost temperature sensor failure LED1 flash 11 times Suction temperature sensor failure LED1 flash 12 times Ambient temperature sensor failure LED1 flash 13 times Discharge temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistors errors.
  • Page 55 HSU129HG(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 signal don’t received in 2 minutes Decision Conditions Supposed Causes...
  • Page 56 HSU129HG(DB)-SM 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 Does it rotate? motor connector, then turn power ON Check output of fan motor connector Is motor power voltage DC310V...
  • Page 57 HSU129HG(DB)-SM Service Diagnosis 7.3.3 Outdoor DC fan motor fault Check whether Terminal on the outdoor mainboard is well inserted. Is it normal? Reinsert the terminals Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor...

  • Page 58: Ipm Protection

    HSU129HG(DB)-SM Service Diagnosis 7.3.4 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.
  • Page 59 HSU129HG(DB)-SM Service Diagnosis 7.3.5 The communication fault between IPM and outdoor PCB 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 Decision The IPM module broken leads to communication fault Conditions...
  • Page 60 HSU129HG(DB)-SM Service Diagnosis 7.3.6 Overheat Protection For Discharge 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 HSU129HG(DB)-SM Service Diagnosis 7.3.7 EEPROM abnormal Indoor Display Indoor EEPROM error F12 Outdoor EEPROM error LED1 flash 1 times Method of The Data detected by the EEPROM are used to determine MCU. Malfunction Detection Malfunction When the Data of EEPROM is error or the EEPROM is damaged. Decision Conditions Supposed...
  • Page 62 HSU129HG(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 63 HSU129HG(DB)-SM Service Diagnosis Check the indoor mainboard. Measure the voltage between Jumpers 3 and 4 of IC1 on the indoor mainboard with a multimeter. Test the outdoor power supply (230VAC and +310VDC) with a multimeter. If the voltage is of a constant value of 0V DCto5V DC If 230VAC is available but 310DC not, the power module is damaged, replace it...
  • Page 64 HSU129HG(DB)-SM Service Diagnosis 7.3.9 Power Supply over or under voltage 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 Supposed...
  • Page 65 HSU129HG(DB)-SM Service Diagnosis 7.3.10 Loop of the station detect error Outdoor Display LED1 flash 18 times Indoor Display F11 LED1 flash 19 times Indoor Display F28 Method of The position of the compressor rotor can not detected normally Malfunction Detection Malfunction When the wiring of compressor is wrong or the connection is poor;...
  • Page 66 HSU129HG(DB)-SM Service Diagnosis 7.3.11 Over-current of the compressor Outdoor Display LED1 flash 3 Indoor Display F22 LED1 flash 24 Indoor Display F2 LED1 flash 25 Indoor Display F23 Method of The current of the compressor is too high Malfunction Detection Malfunction When the IPM Module is damaged Decision...

  • Page 67: Installation

    HSU129HG(DB)-SM Installation 8 Installation Installation Manual of Room Air Conditioner Preparation Selection of Installation Place Necessary Tools for Installation Torque wrench Indoor Unit Driver (17mm,22mm,26mm) Nipper Place, robust not causing vibration, where the body can be supported sufficiently. Hacksaw Pipe cutter Place, not affected by heat or steam generated in the vicinity, where inlet and outlet of Hole core drill Flaring tool...
  • Page 68 HSU129HG(DB)-SM Installation 1. Insert the drain hose into the dent of heat insulation materials of indoor unit. Accessory parts 2. Insert the indoor/outdoor electric cable from backside of indoor unit, and pull it out on the front side, then connect them. 3.
  • Page 69 HSU-12HEG03/R2(DB)-SM Installation 1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar qualified person. The type of connecting wire is H05RN-F or H07RN-F. 2. If the fuse on PC board is broken please change it with the type of T.3.15A/250VAC (Indoor), T.25A/250VAC (Outdoor).
  • Page 70 HSU129HG(DB)-SM Attaching Drain-Elbow 1.Cut pipe 2.Remove burs Flare tooling die If the drain-elbow is used, please attach it as gure. (Note: Only for heat pump unit.) Purging Method:To use vacuum pump 3.Insert the are nut 4.Flare pipe Detach the service port’s cap of 3-way valve, the valve rod’s cap for 2-way valve and 3-way’s, connect the service port into the projection of charge hose (Iow) for gaugemanifold.
  • Page 71 HSU129HG(DB)-SM Removal of procedure Domestic air conditioner...
  • Page 72 Removal of procedure HSU129HG(DB)-SM Please embed the air filters into the unit along the grooves as installation. Please embed the two hooks on air filter completely into the unit during installation. Domestic air conditioner...
  • Page 73 HSU129HG(DB)-SM Removal of procedure 9.2 Remocal of front panel until it is on the horizontal position, and then release the pivots on both sides of the unit to remove the front panel. Please close the panels before start the removal procedure of front grille.
  • Page 74 Removal of procedure HSU129HG(DB)-SM HOOKS three Domestic air conditioner...
  • Page 75 HSU129HG(DB)-SM Removal of procedure horizontal flap flap flap flap flap Domestic air conditioner...
  • Page 76 Removal of procedure HSU129HG(DB)-SM Domestic Air Conditioner...
  • Page 77 Removal of procedure HSU129HG(DB)-SM Domestic Air Conditioner...
  • Page 78 Removal of procedure HSU129HG(DB)-SM Domestic air conditioner...
  • Page 79 Removal of procedure HSU129HG(DB)-SM Domestic air conditioner...
  • Page 80 HSU129HG(DB)-SM Removal of procedure Domestic air conditioner...
  • Page 81 Removal of procedure HSU129HG(DB)-SM Domestic air conditioner...
  • Page 82 Removal of procedure HSU129HG(DB)-SM Domestic air conditioner...
  • Page 83 HSU129HG(DB)-SM Removal Procedure...
  • Page 84 HSU129HG(DB)-SM Removal Procedure...
  • Page 85 HSU129HG(DB)-SM Removal Procedure...
  • Page 86 HSU129HG(DB)-SM Removal Procedure 9.10...
  • Page 87 HSU129HG(DB)-SM Removal Procedure...
  • Page 88 HSU129HG(DB)-SM Removal Procedure...
  • Page 89 HSU129HG(DB)-SM Removal Procedure...
  • Page 90 HSU129HG(DB)-SM Removal Procedure 9.13...
  • Page 91 HSU129HG(DB)-SM Removal Procedure...

  • Page 92: Wiring Diagrams

    HSU129HG(DB)-SM Wiring Diagrams 10.Wiring Diagrams 10.1. INDOOR UNIT EMERGENRY SWITCH Double-way air exchange Domestic Air Conditioner...
  • Page 93 HSU12 9HG(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 94: Circuit Diagrams

    HSU12 9HG(DB)-SM wiring Diagrams 11.Circuit Diagrams 11.1.INDOOR UNIT CN32' CN32'' urgent switch Note3 R53,R6,R16,R18,R17,R21 EEPROM Comment: 10K select accoding to diaplay SRCK SWITCH For change 0.1uF JTP1288LA Comment: 1K write online SW1' Comment: 0.1uF CHECK/S_TIME TSVC-1 TEST DIGH CN48 MODE DIGL 0.1uF MODE...
  • Page 95 HSU12 9HG(DB)-SM wiring Diagrams 11.2.OUTDOORUNIT 11.2.1Control Bard Circuit Diagrams COM heater AC-L AC-N AC-N OUT AC-L OUT Comment: CN25 CN11 CN27 CN36 CN14 CN15 White Black C COM FUSE1 PTC1 J24 J25 J26 J27 Black 2U/450V FUSE2 T25A 250VAC 400N AC-L 100/1W T1A/250V...
  • Page 96 HSU12 9HG(DB)-SM wiring Diagrams CN26 250 Connector 220K/2W 105/275VAC 680U/400V/450V 680U/400V/450V LED2 POWER 250 Connector CN24 11.2.2 module board Circuit Diagram 5.2M H/15A C N1 C N2 D207 FF A30U60DN PS21964-AT/AST/PS219A4-ASTX C N8 C N3 IC 8 C 405 C 404 C 406 AC-L SGH40N60UF...
  • Page 97 H-heat pump Nominal cooling capacity (12000BTU/h) The structure code of indoor & outdoor unit: S(wall-mounted) H-Abbreviation of Haier Examples: HSU-07RD03/R1,It represents wall-mounted split type heat pump air conditioner .The cooling capacity is 7000BTU/h,and the power supply is 220-230V/50Hz,”D” means the developing sequence,and"R1"...
  • Page 98 The end HSU129HG(DB)-SM Sincere Forever Haier Group Shi Longfei Yu Huali Wang Fei 86 532 88936935 Wu Hongjin...

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