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Haier HSU-12LV03 Service Manual

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Air Conditioner
Edition:2006/8/20
CAUTION
READ THIS MANUAL CAREFULLY TO
DIAGNOSE TROUBLE CORRECTLY
BEFORE OFFERING SERVICE .

SERVICE MANUAL

Air Conditioners
MODEL: HSU-12LV03
THIS MANUAL IS USED BY
QUALIFIED APPLIANCE
TECHNICIANS ONLY. HAIER
DOES NOT ASSUME ANY
RESPONSIBILITY FOR PROPERTY
DAMAGE OR PERSONAL INJURY
FOR IMPROPER SERVICE
PROCEDURES DONE BY ONE
UNQUALIFIED PERSON.
REVISION
0

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  Summary of Contents for Haier HSU-12LV03

  • Page 1: Service Manual

    CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE . SERVICE MANUAL Air Conditioners MODEL: HSU-12LV03 THIS MANUAL IS USED BY QUALIFIED APPLIANCE TECHNICIANS ONLY. HAIER DOES NOT ASSUME ANY RESPONSIBILITY FOR PROPERTY DAMAGE OR PERSONAL INJURY...
  • Page 2: Important Information

    Air Conditioner Edition:2006/8/20 IMPORTANT INFORMATION Features Comfortable: wide-angle airflow health air purifying quiet operation Main Specification Cooling Capacity 3500W Rated Power/Current(cooling) 1250W/5.9A EER: 2.8 Air Volume(Indoor/outdoor): 450m Power: 1PH 220V~ 50 Hz...
  • Page 3: Safety Information

    Haier urges you read and follow all safety precautions and warnings contained in this manual. Failure to comply with safety information may result in severe personal injury or death.
  • Page 4: Table Of Contents

    Air Conditioner Edition:2006/8/20 CONTENTS 1.SPECIFICATION................1 2.ELECTRI CAL CONTROL..............2 3.TROUBLE SHOOTING...............6 4. INSTALLA TION.................9 5.WIRING DIAGRAM................17 6. THERMISTER RESISTANCE CHART..........19 7. PERFORMANCE CURVES DIAGRAM..........24 8. COMPRESSOR PERFORMANCE DIAGRAM........25 9. SOUND PRESSURE LEVEL.............26 10. SCHEMATIC DIAGRAM OF PCB............27...
  • Page 5: Specification

    Air Conditioner Edition:2006/8/20 SPECIFICATION HSU-12LV03 ----- Model Brand Mark 3500W Cooling Capacity Frequency Range 1250W/4.3A 220~ 50 Hz Rated Power/Current Power Cooling 1600W/7.5A Max Power/Current Indoor Motor Power ------ Outdoor Motor Power         34w Heating Capacity Compressor RECHI ------ Rated Power/Current...
  • Page 6: Electrical Control

    Air Conditioner Edition:2006/8/20 ELECTRICAL CONTROL ELECTRICAL CONTROL 1. Run mode:(Tr: inlet air temperature,Ts:the set temperature) 1. Run mode:(Tr: inlet air temperature,Ts:the set temperature) 1.1 automatic run mode 1.1 automatic run mode The background lighting of the LCD is white The background lighting of the LCD is white 1) cooling only type automatic run mode: 1) cooling only type automatic run mode: When the system runs under "automatic"...
  • Page 7 Edition:2006/8/20 Air Conditioner ELECTRICAL CONTROL 1.3 Dehumidifying mode: (Tr: inlet air temperature,Ts:the set temperature) The background lighting of the LCD is aquamarine blue Temperature control range : 16℃—30℃ Temperature control precision: ±1℃ control character: When Tr (indoor temperature) > Ts (temperature setting) +2℃, compressor and outdoor fan motor run continuosly with indoor fan motor runnig in accordance with the wind speed setting.
  • Page 8 Edition:2006/8/20 Air Conditioner ELECTRICAL CONTROL ELECTRICAL CONTROL ELECTRICAL CONTROL 2.Control function: 2.1Timer function: You can set 24-hour timer on or timer off as required, and the minum time unit is 1 minute. After setting, a pattern of clock displaied on the LCD, and it is off when timer setting is completed.
  • Page 9 2.6 Alarm from indoor fan motor: 120 seconds later after the indoor fan motor is charged, and the impulse from fan motor is not detected, then stop outputting voltage to indoor fan motor, send alarm signals. 3.express mode of malfunction: MODEL PCB number The SW2 Select "25"OR"35" HSU-09LV03 0010404300 HSU-12LV03 0010404300...
  • Page 10: Trouble Shooting

    Air Conditioner Edition:2006/8/20 TROUBLE SHOOTING Before asking for service, check the following first. Phenomenon Cause or check points The system does not restart When unit is stopped, it won't restart immediately. immediately until 3 minutes have elapsed to protect the system. When the electric plug is pulled out and reinserted, the protection circuit will work for 3 minutes to protect the air conditioner.
  • Page 11 Air Conditioner Edition:2006/8/20 TROUBLE SHOOTING Error code of indoor reasons ways and means solutions tools display Check the sensor of Indoor indoor ambient temp.Sensor temperatrue,if the Change the is shorted out Multimeter resistance value is 0 sensor or opened or ∞, the sensor is circuit abnormal Temp.
  • Page 12: Installation

    Air Conditioner Edition:2006/8/20 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)
  • Page 13 (Unit:mm) (Unit:mm) HSU-09LV03 HSU-12LV03 HSU-18LV03 HSU-22LV03 Fix the unit to concrete or block with bolts( 10mm) and nuts firmly and horizontally. Fixing of outdoor unit When fitting the unit to wall surface, roof or rooftop, fix a supporter surely with nails or wires in consideration of earthquake and strong wind.
  • Page 14: Installation Of The Indoor Unit

    Air Conditioner Edition:2006/8/20 INSTALLATION 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.
  • Page 15 Air Conditioner Edition:2006/8/20 INSTALLATION 1. Insert the drain hose into the dent of heat insulation materials of indoor unit. 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 16 Outdoor unit Indoor unit Indoor unit Outdoor unit HSU-09LV03 HSU-18LV03 HSU-12LV03 HSU-22LV03 claw of the clip 5.Easily-demount cleaning of indoor unit 1.Top inlet can be taken down Open the inlet grille, press the claw of the clip on the unit,then Figure 1 take down the top inlet.(according to figure 1)
  • Page 17: Installation Of Outdoor Unit

    Air Conditioner Edition:2006/8/20 INSTALLATION 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.
  • Page 18 (4) Open 2-way and 3-way valves 9.52mm(3/8") using specified torque. 12.7mm(1/2") (5) Tighten the caps on the valves with specified torque. HSU-09LV03 HSU-12LV03 Tighten torque N.m HSU-09HV03 HSU-12HV03 Valve rod Valve cap 20-25 When connecting pipe exceeds 5 meters, 16g refrigerant shall be added per exceeding meter.
  • Page 19 Air Conditioner Edition:2006/8/20 INSTALLATION 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.
  • Page 20: Wiring Diagram

    Air Conditioner Edition:2006/8/20 WIRING DIAGRAM Fan Motor LCD Board FUSE UV Light B   BLACK R   RED BR  BROWN BL  BLUE W   WHITE Y/G YELLOW/GREEN POWER SUPPLY 3...
  • Page 21 Air Conditioner Edition:2006/8/20 WIRING DIAGRAM B(C) R(S) W(R) Y/G: NOTE: 1.wiring as above for cool-heat models. 2.The dotted lines are needn't in cooling only models(marked with @) . Wire is connected from BR (marked with @@) on terminal block to W. 3.The O.L.P.
  • Page 22: Thermister Resistance Chart

    Air Conditioner Edition:2006/8/20 Edition:2006/8/20 THERMISTER RESISTANCE CHART THERMISTER RESISTANCE CHART room temperature sensor T(℃) R(KΩ) 251.8 236.9 223.1 210.1 197.9 186.5 175.9 165.9 156.5 147.7 139.5 131.8 124.5 117.7 111.3 105.3 99.63 94.3 89.3 84.58 80.14 75.96 72.02 68.31 64.81 61.51 58.39 55.45...
  • Page 23 Air Conditioner Edition:2006/8/20 THERMISTER RESISTANCE CHART 27.75 26.47 25.25 24.1 23.00 21.96 20.97 20.03 19.14 18.3 17.49 16.73 15.3 14.65 14.02 13.42 12.85 12.31 11.79 11.3 10.83 10.39 9.96 9.553 9.165 8.794 8.441 8.103 7.78 7.472 7.178 6.897 6.628 6.371 6.125 5.889 5.664...
  • Page 24: Temperature Sensor

    Air Conditioner Edition:2006/8/20 THERMISTER RESISTANCE CHART 4.502 4.336 4.177 4.024 3.878 3.738 3.603 3.474 3.35 3.231 3.117 3.008 2.903 2.802 2.705 2.611 2.522 INDOOR PIPE TEMPERATURE SENSOR T(℃) R(KΩ) 87.42 82.71 78.29 74.12 70.21 66.52 63.06 59.79 56.71 53.81 51.08 48.5 46.07 43.77...
  • Page 25 Air Conditioner Edition:2006/8/20 THERMISTER RESISTANCE CHART 34.06 32.43 30.88 29.42 28.03 26.72 25.48 24.3 23.18 22.12 21.12 20.17 19.26 18.4 17.59 16.81 16.08 15.38 14.71 14.08 13.48 12.91 12.36 11.84 11.35 10.88 10.43 10.00 9.592 9.204 8.833 8.479 8.141 7.819 7.511 7.217 6.936...
  • Page 26 Air Conditioner Edition:2006/8/20 THERMISTER RESISTANCE CHART 5.287 5.09 4.902 4.722 4.549 4.383 4.225 4.073 3.927 3.788 3.654 3.525 3.402 3.283 3.17 3.061 2.956 2.855 2.759 2.666 2.577 2.491 2.408 2.329 2.253 2.179 2.108 2.04 1.975 1.912 1.851 1.793 1.737 1.682 1.68 1.58 1.531...
  • Page 27: Compressor Performance Diagram

    Air Conditioner Edition:2006/8/20 COMPRESSOR PERFORMANCE DIAGRAM...
  • Page 28: Sound Pressure Level

    Air Conditioner Edition:2006/8/20 SOUND PRESSURE LEVEL INDOOR:44.3 dB(A) OUTDOOR:54.7  dB(A) NOTE: The sound pressure level is based on the following conditions: 1 meter above the discharge grille and 1 meter from the front side. Voltage of the power source for the indoor fan motor is 220V. In case of the power source of 240V, the sound pressure level increases by about 1 dB.
  • Page 29 Edition:2006/8/20 Air Conditioner TOP SILK SCREEN VIEW...
  • Page 30: Schematic Diagram Of Pcb

    Edition:2006/8/20 Edition:2006/8/20 Air Conditioner Air Conditioner SCHEMATIC DIAGRAM OF PCB BOTTOM WIRING VIEW...
  • Page 31 Edition:2006/8/20 Air Conditioner SCHEMATIC DIAGRAM OF PCB WELDING VIEW...
  • Page 32: Circuit Diagram

    Edition:2006/8/20 Air Conditioner SCHEMATIC DIAGRAM OF PCB CIRCUIT DIAGRAM CON5-1 CN11 • • • • 50HZ R59 10K R2 1K R1 10K 4.7K 2SC2412 2SC2412 100u/16v OSC1 4.7k +12V OSC2 CGMXFC VSSA R14 10K VDDA VREFH 2SC2412 E6 4.7uF/16V 4.7uF/16V R86 4.7K 4.7K 2SA1037AK...
  • Page 33 Air Conditioner Edition:2006/8/20 SCHEMATIC DIAGRAM OF PCB CIRCUIT DIAGRAM c c V V R D N - V 0 2 2...
  • Page 34 Air Conditioner Edition:2006/8/20 Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...