Haier HSU18VH7 Service Manual
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Haier HSU18VH7 Service Manual

Haier HSU18VH7 Service Manual

Domestic air conditioner
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See also: Operating Manual , Installation Manual

Air conditioner

Edition: 10070808
Domestic
Air conditioner
HSU18VH7
CAUTION
READ THIS MANUAL
CAREFULLY TO
DIAGNOSE TROUBLE
CORRECTLY BEFORE
OFFERING SERVICE.
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.

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Summary of Contents for Haier HSU18VH7

  • Page 1: Air Conditioner

    READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE. 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...
  • Page 2 Air conditioner Edition: 10070808 CONTENTS 1. GENERAL INFORMATION...1 2. SPECIFICATION...3 3. ELECTRICAL CONTROLS ...4 4. TROUBLE SHOOTING...10 5. INSTALLA TION...12 6. WIRING DIAGRAM...20 7. THERMISTOR RESISTANCE CHART...22 8. COMPRESSOR PERFORMANCE DIAGRAM...24 9. SCHEMATIC DIAGRAM OF PCB...25...

  • Page 3: General Information

    1. General information This Service Manual describes the operation, disassembly, troubleshooting, and repair of Haier Room Air Conditioners, etc. It is intended for use by authorized services who troubleshoot and repair these units. It is assumed that users of this manual are familiar with the use of tools and equipment used to troubleshoot and repair electrical, mechanical, and refrigeration systems;...
  • Page 4 10070808 HSU18VH7 Product Features TEMP SIGNAL SENDING FAN SPEED SLEEP HEALTH POWER ON/OFF 18000/17800 BTU 1580/1560W/7/7.5A SEER:13.0/13.0 18000/18000 BTU 1520/1480W/6.7/7.2A HSPF:7.7/7.7 500 CFM 1PH 230/208V ~ 60Hz...
  • Page 5 SEER HSPF (High/Med/Low) Indoor(H/M/L) (dB) Outdoor Low pressure at cool side HSU18VH7 1 PH 230/208V / 60Hz 18000/17800 BTU 1580/1560W/7/7.5A 13.0/13.0 18000/18000 BTU 1520/1480W/6.7/7.2A 7.7/7.7 -7℃～43℃ 1350rpm 1260rpm 1180rpm 900/830rpm 500/480/450CFM IP24 5.2 Pints/hr YR-H24 3G2.5mm2 Toshiba/PA160X2CS-3KUU 750ml R410A/67.4Oz 47/46/44 47/45/44 60/62 Φ16mm...
  • Page 6 10070808 3.1 Basic Function 86 F 86 F 86 F...
  • Page 7 3 minutes (State 2) Tr <Ts, compressor, outdoor fan ceases, indoor fan runs in lower wind speed. 3.2.3.3 (State 3) Air conditioner Ts=26℃ Ts=23℃ Compressor OFF Compressor 压机关...
  • Page 8 Defrosting will begin if one of the above conditions is met. Defrosting finishing condition: If the defrosting time exceeds 9 (for 12 models)or 7 (for 07,09 models) minutes,the original heating state will be resumed; Air conditioner State1 Ts+2 Ts+3 - 6 -...
  • Page 9 Outdoor fan Freezing prevention function 3.2.7 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 OFF after 5 minutes 3 minutes stand-by time 3.2.8...
  • Page 10 When the air conditioner is in OFF state, press the emergency switch for 5 seconds till hearing 2 sounds of click from the buzzer, then the air conditioner will turn to the trial run state. The unit will run in the refrigerating mode and the indoor fan will run in high wind speed mode.
  • Page 11 1 hour under heating mode, the setting temperature will decrease 2 after another 1 hour, it will decrease the 2 increase , and after other 3 hours, it will cease. 1℃ MODEL HSU18VH7 0010403861 Air conditioner again, and after 3 hours, it will ℃ The SW2 select“25”OR “35”...
  • Page 12 10070808...
  • Page 13 5 and 4 of Terminal CN2 on the indoor mainboard about DC13-16.5V. Measure the voltage between 7 and 4 of Terminal CN2 about 1-6.5v the PCB of the indoor unit is damaged and needs replacing Air conditioner Ways and means Check the sensor of indoor ambient...
  • Page 14 10070808...
  • Page 15 10070808...
  • Page 16 10070808 -14-...
  • Page 17 Air conditioner Edition: 10070808 -15-...

  • Page 18: Indoor Unit

    10070808 Indoor unit Grounding line Grounding line Connecting wiring:AWG12X4+AWG18X2. Connecting wiring:AWG12X5. Power Cable:AWG12X3. Power Cable:AWG12X3.
  • Page 19 10070808 -17-...
  • Page 20 10070808...
  • Page 21 10070808...
  • Page 22 WIRING DIAGRAM INDOOR UNIT WIRING DIAGRAM OF INDOOR UNIT COMP CN10 CN12 NOTING： ONLY COOLING TYPE DOESN'T HAVE THE w w w w w DOTTED LINE. THE DASHED UNIT IS OPTIONAL UNIT. TO OUTDOOR UNIT LOUVER MOTOR FAN MOTOR ION GENERATOR 10070808 R:RED W:WHITE...

  • Page 23: Outdoor Unit

    OUTDOOR UNIT WIRING DIAGRAM OF OUTDOOR UNIT Y/G:YELLOW/GREEN R:RED BL:BLUE Y:YELLOW B:BLACK BR:BROWN W:WHITE ～ L1(L) TO INDOOR UNIT Note: Because of the difference of compressor, the dotted line part may not exist. Edition:10070808 0010510468 ～ Grounding line L2(N)
  • Page 24 T(℃) R(KΩ) -20 ℃ 251.8 -19℃ 236.9 -18 ℃ 223.1 -17℃ 210.1 -16 ℃ 197.9 -15℃ 186.5 -14 ℃ 175.9 -13℃ 165.9 -12 ℃ 156.5 -11℃ 147.7 -10 ℃ 139.5 -9℃ 131.8 -8 ℃ 124.5 -7℃ 117.7 -6 ℃ 111.3 -5℃...
  • Page 25 T(℃) R(KΩ) T(℃) -30 ℃ 0 ℃ 155.4 1 ℃ -29℃ 146.4 -28 ℃ 2 ℃ 138.1 3 ℃ -27℃ 130.2 -26 ℃ 4 ℃ 122.9 5 ℃ -25℃ -24 ℃ 6 ℃ 109.5 7 ℃ -23℃ 103.5 -22 ℃ 8 ℃...
  • Page 26 10070808 HSU18VH7 -24-...

  • Page 27: Circuit Diagram

    CIRCUIT DIAGRAM CN20 100UF/25V 2SB1197 CN21 TEST 24C01A 4.7K BUZZ 2SC2412 +12V +15V 2.7K TLP421 +15V 4.7UF/50V 0.1UF/275VAC +300v IC10 TLP421 4.7UF/50V 5D-15 NTC 5.0 0.1uF 275VAC 1N4007 LB2271 S14K350/550NR-14D R69 0 100UF/25V LED BOARD 4.7K 4.7k 4.7k 4.7k 4.7k ULN2003A 8.00MHz R74 10K...

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