Haier HSU-18LEK03/R2 Service Manual
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Haier HSU-18LEK03/R2 Service Manual

Wall mounted type dc inverter ek-series
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2014

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Summary of Contents for Haier HSU-18LEK03/R2

  • Page 1 2014...

  • Page 2: Table Of Contents

    Table of Contents Table of Contents 1. Introduction …………………………………………………………………………………..1 2. List of Functions ……………………………………………………………………………..6 3. Specifications ……………………………………………………………………………….. 7 4. Printed Circuit Board ConnectorWiring Diagram …………………………………….. 9 5. Functions and Control ………………..………………………..…………….………..14 5.1 Main functions and control specifications of indoor unit …….………...………….14 5.2 Main functions and control specifications of outdoor unit ……………..………………21 5.3 Value of Thermistor …………………………………....………..…………………….25 6.

  • Page 3: Introduction

    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 4: Cautions Regarding Products After Repair

    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 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

    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 7 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 8: List Of Functions

    HSU-18LEK03/R2(DB)

  • Page 9: Specifications

    HSU-18LEK03/R2(DB)
  • Page 10 HSU-18LEK03/R2(DB)

  • Page 11: Printed Circuit Board Connectorwiring Diagram

    HSU-18LEK03/R2(DB)
  • Page 12 Connector Wiring Diagram PCB(1) CN21 CN22 CN27 CN23 CN34 CN14 CN51 Domestic Air Conditioner...
  • Page 13 Connector Wiring Diagram 4.2 outdoor unit Connectors PCB(1) (Control PCB) 1) CN1,CN2 Connector for power N and L 2) CN3 CN8 Connector for ground 3) CN23 Connector for DC POWER 15Vand 5V to the module board 4) CN9,CN10 Connector for CN9,CN8 on the module board 5) CN22 Connector for fan motor 6) CN11 Connector for four way valve coil 7) CN17,CN18,CN19,CN20,CN21 CN47 Connector for thermistors...
  • Page 14 Connector Wiring Diagram CN36 CN10 CN49 CN11 CN14 CN15 CN45 CN16 CN47 CN17 CN18 CN19 CN20 CN21 CN22 CN23 CN24 CN25 CN28 Domestic Air Conditioner...
  • Page 15 Connector Wiring Diagram PCB(2) CN11 CN10 Domestic Air Conditioner...

  • Page 16: Functions And Control

    Functions and Control 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 17 Functions and Control 5.1.3 Demoisture mode. * temperature control range: 16---30 * temperature difference: ±1 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 18 Functions and Control When the system is at the automatic option with the strength/ mute function, if the system enters the cooling mode, the cooling strength/ mute function will be offered; if the system enters the heating mode, then the heating strength/ mute function will be offered; if the system enters the airflow mode, there will be no strength/ mute function.
  • Page 19 Functions and Control temperature will be raised for 1 centigrade after 1 hour’s operation and will be raised for 1 centigrade 1 hour later. The system will keep this status for 6 hours and then close. 2.2 Under the heating mode, after the setting of the dormant operation, the et temperature will fall 2 centigrades after 1 hour’s operation and will fall 2 centigrades 1 hours later.
  • Page 20 Functions and Control will continue to operate. The outdoor system will be started again when the heat interaction temperature is above 7 centigrade and the system has been stopped for 3 minutes. The malfunction will be stored in the malfunction resume and will not be revealed. 5.1.11 High load protection control The outdoor system will be stopped if the coil temperature is above 65 for 2 minutes.
  • Page 21 Functions and Control 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. The indoor system will continue to operate according to the original status, the malfunction code will not be revealed or processed. 4.transmission abnormality: If the indoor system can’t receive the outdoor system for 8 minutes, the communication abnormality can be confirmed and reported and the outdoor system will be stopped.
  • Page 22 Functions and Control Entering the fixed frequency operation, you can set the fixed strength location 1 and send the heating signal to the outdoor system. Meanwhile, you can fix the indoor system at high speed mode, the location of the airflow directin board can be switched to the maximal position. c.

  • Page 23: Main Functions And Control Specifications Of Outdoor Unit

    Functions and Control 5.2 The control system of outdoor unit 5.2.1 The operation frequency of outdoor unit and its control 5.2.1.1 The operation frequency control of compressor The operation frequency scope of compressor Mode Minimun operation frequency Maximun operation frequency 5.2.1.2 The starting of compressor When the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hz for one minute (the overheating protection of the outdoor unit air-blowing temperature,...
  • Page 24 Functions and Control Refrigeration/dehumidification: ≥ <1 The percentage of the 100% 120% 140% 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 K healthy airflow...

  • Page 25: Protection Function

    Functions and Control 5.2.5 Protection function 5.2.5.1 TTC high temperature-preventing protection Once the machine is started, it can run TTC overheating protection of air-blowing, but air-blowing sensor malfunction must alarm after 4 minutes during which the compressor is started (during the course of self-detection, there’s no such limitation) Sensor detection methods: 100 times (one cycle of procedure run is one time, and about 5ms, detection method for each time: continuously sampling for 8 times, then order them and take the...
  • Page 26 Functions and Control 5.2.5.3 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 27: Value Of Thermistor

    Functions and Control 5.2.5.5 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 28 Functions and Control 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 37.7429 -1.47 1.39 41.4249 38.6207 35.9739 -1.45 1.37 39.3792 36.7676 34.2983 -1.43 1.35 37.4465 35.0144 32.7108 -1.41 1.33 35.6202 33.3552 31.2062 -1.38 1.31...
  • Page 29 Functions and Control 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 5.4812 -1.25 1.22 5.7997 5.5316 5.2712 -1.29 1.25 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...
  • Page 30 Functions and Control 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 1.1415 -3.27 3.01 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...
  • Page 31 Functions and Control 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 1.70 122.8484 110.9627 100.1367 -1.85 1.69 115.9272 104.8882 94.8149 -1.83 1.67 109.4410 99.1858 89.8106 -1.81 1.66...
  • Page 32 Functions and Control 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 11.8780 -0.86 0.85 12.2280 11.8126 11.4011 -0.83 0.83 11.7102 11.3267 10.9459 -0.81 0.80...
  • Page 33 Functions and Control 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 -2.40 2.25 2.3068 2.1383 1.9803 -2.45 2.29...
  • Page 34 Functions and Control 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 0.5043 -4.80 4.31...
  • Page 35 Functions and Control 3085.2854 2658.8058 2289.2164 -2.63 2.28 2906.2851 2508.9126 2163.9230 -2.61 2.27 2738.6777 2368.3158 2046.1961 -2.60 2.26 2581.6752 2236.3876 1935.5371 -2.58 2.25 2434.5487 2112.5459 1831.4826 -2.56 2.24 2296.6230 1996.2509 1733.6024 -2.55 2.23 2167.2730 1887.0018 1641.4966 -2.53 2.22 2045.9191 1784.3336 1554.7931 -2.52 2.21...
  • Page 36 Functions and Control 287.4128 265.4119 244.8745 -1.80 1.68 274.3905 253.7288 234.4118 -1.78 1.66 262.0206 242.6161 224.4465 -1.76 1.64 250.2676 232.0436 214.9529 -1.74 1.63 239.0983 221.9825 205.9065 -1.71 1.61 228.4809 212.4060 197.2844 -1.69 1.59 218.3860 203.2887 189.0648 -1.67 1.57 208.7855 194.6066 181.2273 -1.65 1.55...
  • Page 37 Functions and Control 44.7385 43.2468 41.7672 -0.96 0.95 43.2105 41.7248 40.2540 -1.00 0.99 41.7386 40.2604 38.7996 -1.03 1.02 40.3241 38.8545 37.4048 -1.07 1.06 38.9643 37.5045 36.0668 -1.11 1.09 37.6569 36.2078 34.7831 -1.14 1.13 36.3996 34.9622 33.5513 -1.18 1.16 35.1903 33.7653 32.3689 -1.22 1.19...
  • Page 38 Functions and Control 10.9112 10.0970 9.3352 -2.81 2.63 10.6084 9.8082 9.0602 -2.86 2.67 10.3151 9.5288 8.7945 -2.91 2.71 10.0312 9.2586 8.5378 -2.95 2.75 9.7563 8.9971 8.2895 -3.00 2.80 9.4901 8.7441 8.0495 -3.05 2.84 9.2322 8.4993 7.8175 -3.09 2.88 8.9824 8.2623 7.5931 -3.14 2.92...

  • Page 39: System Configuration

    System Configration Domestic Air Conditioner...

  • Page 40: Parts And Functions

    System Configration Parts and Functions Indoor Unit Outdoor Unit Inlet Air Purifying Filter (inside) OUTLET Inlet grille INLET CONNECTING PIPING AND ELECTRICAL WIRING Outlet DRAIN HOSE Vertical blade Emergency (adjust left and Switch Horizontal flap r ight air fl (adjust up and down air flow Remote controller Display board Don't adjust it manually)
  • Page 41 System Configration Operation Air Flow Direction Adjustment 1.Status display of air flow Unit start / stop Press button to enter additional options, when cycle display to will flash. And then press enter to up and down air flow function. Remote controller Press button.

  • Page 42: Test Operation

    System Configration Operation TURBO/QUIET Operation Timer On/Off On-Off Operation (This function is unavailable on some models.) 1.After unit starts, select your desired operation mode. TURBO Operation 2.Press TIMER button to change TIMER mode. Every When you need rapid heating or cooling, you can use this function. time the button is pressed, display changes as follows: Press TURBO button, the remote controller will show and then achieve to the turbo function.

  • Page 43: Operation Mode

    System Configration Operation 5. When quiet sleeping function is set to 8 hours the quiet Comfortable SLEEP sleeping time can not be adjusted.When TIMER function is set,the quiet sleeping function can't be set up.After the SLEEP Press button , the remote controller will sleeping function is set up,if user resets TIMER function, the sleeping function will be cancelled;...
  • Page 44 System Configration 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 45 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 installation of the...
  • Page 46 System Configration Trouble shooting Cautions Before asking for service, check the following grille of the air Do not obstruct or cover the ventilation first. or any other things into the conditoner.Do not put fingers inlet/outlet and swing louver. Phenomenon Cause or check points Do not allow children to play with the air conditioner .In no When unit is stopped, it won't restart...

  • Page 47: Error Codes And Descirption

    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 48 Service Diagnosis Overcurrent protection of AC electricity Outdoor for the outdoor model Malfunction Communication fault between the IPM and Page 56 outdoor PCB Power voltage is too high or low Page .57 Overheat protection for exhaust temperature Page .58 Defrost temperature sensor failure Page .50 Ambient temperature sensor failure Page .50...

  • Page 49: Thermistor Or Related Abnormality

    Service Diagnosis 7.4.1 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 thermistor errors...

  • Page 50: Eeprom Abnormal

    Service Diagnosis 7.4.2 EEPROM abnormal Indoor Display E4: indoor EEPROM error Indoor display F12: Outdoor EEPROM error ;Outdoor 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 51: Indoor Ac Fan Motor Malfunction

    Service Diagnosis 7.4.3 Indoor AC 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...

  • Page 52: Outdoor Dc Fan Motor Fault

    Service Diagnosis 7.4.4 Outdoor DC fan motor fault Check whether Terminal on the outdoor mainboard is well inserted. Reinsert the terminals Is it normal? Electrify the machine again and turn it on in the Cool state with the remote controller. check whether motor can Measure the voltage between 1 and 3 of the terminal of fan motor on the mainboard about DC310V,Measure the voltage between 3 and 4 of the terminal about DC15V.

  • Page 53: Ipm Protection

    Service Diagnosis 7.4.5 IPM protection Indoor display Outdoor display LED1 flash 2 times 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 ■...
  • Page 54 Service Diagnosis 7.4.6 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 55: The Communication Fault Between Ipm And Outdoor Pcb

    Service Diagnosis 7.4.7 The communication fault between IPM and outdoor PCB Outdoor display LED1 flash 4 times 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 ■...
  • Page 56 Service Diagnosis 7.4.8 Power Supply Over or under voltagve fault outdoor display: LED1 flash 6 times The power supply is over voltage 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...
  • Page 57 Service Diagnosis 7.4.9 Overheat Protection For Exhaust Temperature outdoor display LED1 flash 8 times Method of The discharge temperature control is checked with the temperature being detected Malfunction by the exhaust pipe thermistor Detection Malfunction when the compressor discharge temperature is above 110 Decision Conditions Supposed...

  • Page 58: The Communication Fault Between Indoor And Outdoor

    Service Diagnosis 7.4.10 The communication fault between indoor and outdoor Indoor display outdoor display LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB Malfunction Detection Malfunction ■ The outdoor PCB broken leads to communication fault Decision ■...
  • Page 59 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 60: Loss Of Synchronism Detection

    Service Diagnosis 7.4.11 Loss of synchronism detection Inverter side current detection is abnoraml Outdoor Display LED1 flash 18 times LED1 flash 19 times 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; Decision or the compressor is damaged Conditions...
  • Page 61 Service Diagnosis 7.4.12 High work-intense protection Outdoor display LED1 flash 21 times Method of High work-intense control is activated in the heating mode if the temperature Malfunction being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger Decision rises above 65 twices in 30 minutes.

  • Page 62: Installations

    Functions and Control 8.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. ●...

  • Page 63: Installation Manual Of Room Air Conditioner

    Functions and Control 8.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 the Hole core drill Flaring tool...
  • Page 64 HSU-07LEK13/R2 ● In case of left side piping, cut away, with a nipper, the lid for left piping. HSU-09LEK13/R2 HSU-18LEK03/R2(DB) ● In case of left-rear piping, bend the pipes according to the piping direction to HSU-12LEK13/R2 the mark of hole for left-rear piping which is marked on heat insulation materials.
  • Page 65 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) HSU-18LEK03/R2(DB) Outdoor unit for gaugemanifold. Then connect the projection of charge hose (center) for gau- HSU-24LEK03/R2(DB) gemanifold into vacuum pump.
  • Page 66 Functions and Control No gas leakage? On Drainage In case of gas leakage, tighten parts of pipe connection. If Please install the drain hose so as to be downward slope without fail. leakage stops, then proceed 6. steps Please don’t do the drainage as shown below. If it does not stop gas leakage, discharge whole refrigerants from the service port.

  • Page 67: Removal Procedure

    Removal Procedure Removal of indoorunit Domestic Air Conditioner...
  • Page 68 Removal Procedure...
  • Page 69 Removal Procedure Open the 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. Slide the front panel from one side to another to release each axis.
  • Page 70 Removal Procedure HOOKS three Domestic Air Conditioner...
  • Page 72 Removal Procedure Domestic Air Conditioner...
  • Page 73 Removal Procedure Domestic Air Conditioner...
  • Page 74 Removal Procedure Domestic Air Conditioner...
  • Page 75 Removal Procedure...
  • Page 76 Removal Procedure Domestic Air Conditioner...
  • Page 77 Removal Procedure Domestic Air Conditioner...
  • Page 78 Removal Procedure Domestic Air Conditioner...

  • Page 79: The Removal Procedure Of Outdoor

    Removal of procedure 9.2 The removal procedure of outdoor 9.2.1 Removal of Outdoor panel 1. Features Loosen the service Be careful not to cover screw and remove the service cover. Domestic Air Conditioner...
  • Page 80 Removal of procedure 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 81 Removal of procedure 9.2.2 Romoval of Electrcal Box screws, then lift the electrical box Domestic Air Conditioner...
  • Page 82 Removal of procedure 9.2.3 Romoval of the Side panel screws and remove the side panel. Domestic Air Conditioner...
  • Page 83 Removal of procedure Remove the screws and remove the side panel. Domestic air conditioner...

  • Page 84: Removal Of Fan And Fan Motor

    Removal of procedure 9.2.4 Removal of fan and fan motor Put the lead wire Loosen the of motor when remove the fan the propeller fan) Domestic air conditioner...
  • Page 85 Removal of procedure screws and lift the fan motor. Domestic air conditioner...
  • Page 86 Removal of procedure screws, then lift the Domestic air conditioner...
  • Page 87 Removal of procedure Step Procedure screws then lift the proof plate Domestic air conditioner...
  • Page 88 Removal of procedure Cut down the and pull out the compressor and remove the Domestic air conditioner...
  • Page 89 Removal of procedure Domestic air conditioner...
  • Page 90 Removal of procedure Domestic air conditioner...
  • Page 91 Removal of procedure Remove the Domestic air conditioner...

  • Page 92: Wiring Diagrams

    Wiring Diagrams 10.Wiring Diagrams 10..1. INDOOR UNIT Up&down step motor CN21 CN23 CN22 Domestic Air Conditioner...

  • Page 93: Outdoor Unit

    Wiring Diagrams 10.2.Outdoor unit CN9 CN8 DON'T TOUCH CAPACITOR, EVEN AFTER PLUG-OFF( DANGER OF ELECTRI C SHOCK) AC-N AC-L The capacitor retains high voltage even CN11 CN10 after the plug-off. For your safety, be sure to wait at least 5 minutes. After plug off and use a tester to confirm the voltage between connector P and N( on module board ) is less than DC 10V before start...

  • Page 94: Circuit Diagrams

    Wiring Diagrams 11.Circuit Diagrams 11.1.INDOOR UNIT +12V FLZ1 HXF1 TEST 25/35 +12V M ODE 0011800161 EEPROM C1 8 10 0nF ROOM SRCK PIPE DIGH DIGL M ODE KI1/AN9/P11 KI2/AN10/P12 P33/SSI DIG_MODE KI3/AN11/P13 P34/SDA/SCS DIGL COM 3 M ODE (INT2)/P32 M ODE DIGH COM 2 (INT1)/P36...
  • Page 95 Wiring Diagrams 11.2.OUTDOORUNIT 11.2.1Control Board Circuit Diagrams CN10 AC-L OUT AC-N OUT AC-N OUT AC-L OUT CN14 CN13 FUSE1 PTC1 2U/450V T25A 250VAC 400N/PSB400 AC-L S14K350 225/275V 225/275V 225/275V 100/1W 8MH/20A 8MH/20A 103/275V +12V CN16 472/250V/275V AC-N AC-L AC-L +12V S14K350 S14K350 472/250V/275V...
  • Page 96 Wiring Diagrams 11.2.2 module board Circuit Diagram C N8 PS219 97-4A C N3 C N4 D207 C N5 FF AF 30U60 DN C N1 C N6 C 404 C 406 C 405 SGH40N60 UF D 47 4/630 V 47 4/630 V 47 4/275 V (40A@25 AC-L...

  • Page 97: Description Of Coding Rules Of Unit Model

    The end Sincere Forever Haier Group Wang Yujie Zhang Jing He Shiquan 86 532 88936935 Wu Hongjin Domestic Air Conditioner...

This manual is also suitable for:

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