LG LUU188HV Service Manual
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LG LUU188HV Service Manual

LG LUU188HV Service Manual

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Air Conditioner
SERVICE MANUAL
(Exploded View)
MODEL :
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication,
modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained
the prior written consent of the LG Electronics entity from which you received this Service Manual. The material
covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.
Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
LUU188HV LUU189HV LUU248HV
LUU249HV LUU368HV LUU369HV
LUU428HV LUU429HV LUU488HV
CONFIDENTIAL

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Summary of Contents for LG LUU188HV

  • Page 1 Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.

  • Page 2: Specification

    Therefore, these values can be increased owing to ambient conditions during operation. 4. Cooling Operation Range : -15(5)~48(118) When applying the Wind Baffle: -20(-4)~ - 2 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 3 Therefore, these values can be increased owing to ambient conditions during operation. 4. Cooling Operation Range : -15(5)~48(118) When applying the Wind Baffle: -20(-4)~ - 3 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 4 Therefore, these values can be increased owing to ambient conditions during operation. 4. Cooling Operation Range : -15(5)~48(118) When applying the Wind Baffle: -20(-4)~ - 4 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 5: Function Table

    Accessory model name : Installed at field, ordered and purchased separately by the corresponding model name, supplied with sepa- rate package - 5 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.

  • Page 6: Piping Diagrams

    3. Piping Diagrams Models : LUU188HV / LUU189HV / LUU248HV LUU249HV / LUU368HV / LUU369HV LUU428HV / LUU429HV / LUU488HV Outdoor Unit Air temperature Cond-out pipe Refrigerant Flow thermistor temperature Cooling thermistor Heating Cond-mid pipe temperature thermistor Ø9.52 Flare Connection...

  • Page 7: Wiring Diagrams

    4. Wiring Diagrams Models : LUU188HV / LUU189HV / LUU248HV MAIN PCB MOTOR PCB CN_LGMV_BL CN_AIR_YL CN_H_PRESS_RD CN_MAIN_BL CN_MID_BR CN_DISCHARGE_BK GEN2 CN_C_PIPE_VI CN_FAN_WH CN_POWER_WH CN_BLDC_WH GEN1 CN-SUCTION CN_EEV1_WH CN_UVW_RD CN_HEATSINK_WH CN_REACTOR_ OUT2_WH CN_REACTOR_IN_BL CN_FLASH_WH CN_4WAY_YL CN-CP_N CN_REACTOR_OUT1_BL CN_COM_WH CN-CP_L CN_CP_L_BL - 7 - Copyright ©...
  • Page 8 Models : LUU249HV MAIN PCB CN_CENTRAL_WH CN_DISCHARGE_BK CN_EEV1_WH CN_H_PRESS CN_C_PIPE_VI CN_COMP_RD CN_LGMV_WH CN_MID_BR CN_FAN_WH CN_AIR_YL CN_INPUT_BROWN CN_SUCTION_GR CN_EEPROM_WH CN_INPUT_BLUE CN_FLASH_WH CN_4WAY_YL CN_REACTOR_OUT_RD CN_REACTOR_IN_BL - 8 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 9 INV PCB AC_L_BROWN AC_N_BLUE CN_HEATER_BL CN_INV CEN1_WH_J CN_CNVSS CEN2_BL_J CEN2_MID_BR CN_DISCHA_BK CN_SUCTION_GR CN_AIR_YL CN_H_PRESS_RD CN_4WAY_YL CN_EEV1_WH CN_C_PIPE_VI CN_FAN2(BL) CN_FAN1(WH) CN_COM_SINGLE CN_POWER_WH - 9 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 10 INV PCB AC_L_BROWN AC_N_BLUE CN_HEATER_BL CN_INV CEN1_WH_J CN_CNVSS CEN2_BL_J CEN2_MID_BR CN_DISCHA_BK CN_SUCTION_GR CN_AIR_YL CN_H_PRESS_RD CN_4WAY_YL CN_EEV1_WH CN_C_PIPE_VI CN_FAN2(BL) CN_FAN1(WH) CN_COM_SINGLE CN_POWER_WH - 10 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 11 MOTOR PCB CN_FAN1_WH CN_LGMV_WH CN-FAN2_BL CN_MAIN_BL CN_MAIN_WH - 11 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 12 549610 552113 554031 552115 559010 546810 435512 447910 137213A 435300 237202 437212 137213B 435301 349480 435513 237205 135500 552117 437211 552116 550140B 649950 430410 165000 548490 152503 W0FZZB 268711B W6200 148000 55211E 661400 552202 W0FZZA 552200 552203B 268711C 561410 552560 W6631 552203A 554160...
  • Page 13 549610 552113 554031 552115 559010 546810 435512 447910 137213A 435300 237202 437212 137213B 435301 349480 435513 237205 135500 552117 437211 552116 430410 649950 165000 548490 561410 Pressure Pressure Pressure 152503 Sensor Sensor Sensor 261704 EBG13GR 148000 55211E 661400 EBG13VI 552202 552200 EBG13BK 552203B...
  • Page 14 Thermistor S3 (CN_DISCHA_BK) Discharge pipe temperature Black 263230E Thermistor S2 (CN_MID_BR) Cond-mid pipe temperature Brown 165000 Pressure sensor S1 (CN_H_PRESS_RD) Pressure - 14 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 15 Thermistor S3 (CN_DISCHA_BK) Discharge pipe temperature Black 263230E Thermistor S2 (CN_MID_BR) Cond-mid pipe temperature Brown 165000 Pressure sensor S1 (CN_H_PRESS_RD) Pressure - 15 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 16 Thermistor S3 (CN_DISCHA_BK) Discharge pipe temperature Black 263230E Thermistor S2 (CN_MID_BR) Cond-mid pipe temperature Brown 165000 Pressure sensor S1 (CN_H_PRESS_RD) Pressure - 16 - Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 17 ■Condenser Total Assembly Required parts Models : LUU188HV / LUU189HV / LUU248HV / LUU249HV Description Location No. Q'ty Condenser Assembly,Bending 554031 Tube Assembly,Manifold(Outdoor) 552115 Tube Assembly,Condenser(Out) 552113 Models : LUU368HV / LUU369HV / LUU428HV / LUU429HV / LUU488HV Description Location No.
  • Page 18 P/NO : MFL68082948 Copyright © 2016 - 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.

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