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LG A4UW30GFH0 Service Manual

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SERVICE MANUAL
AIR
CONDITIONER
Please read this manual carefully before operating your set and retain it for future reference.
E-View
Multi Air Conditioner
A4UW30GFH0 [LMU300HHV] / A3UW24GFH0 [LMU240HHV]
A2UW18GFH0 [LMU180HHV]
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 © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
P/NO : MFL67452453
CONFIDENTIAL

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Summary of Contents for LG A4UW30GFH0

  • 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

    1. Specification A2UW18GFH0 A3UW24GFH0 A4UW30GFH0 Model Name [LMU180HHV] [LMU240HHV] [LMU300HHV] Nominal Btu/h Class 18,000 24,000 30,000 Capacity Cooling Min~Rated~Max Btu/h 8400~18000~19980 8400~24000~30000 8400~28400~34080 Heating Min~Rated~Max Btu/h 10248~22000~24000 10248~26000~31200 10248~28600~41600 Cooling Min~Rated~Max 0.87~1.33~1.92 0.93~1.78~2.63 0.94~2.27~3.47 Power Input Heating Min~Rated~Max 1.24~2.20~3.29 1.25~2.12~3.47 1.29~2.32~3.55...

  • Page 3: List Of Functions & Accessory

    2. List of Functions & Accessory 2.1 List of Functions A4UW30GFH0[LMU300HHV] Category Functions A3UW24GFH0[LMU240HHV] A2UW18GFH0[LMU180HHV] Defrost/Deicing High pressure switch Low pressure switch Phase protection Reliability Restart delay (3-minutes) Self diagnosis Soft start Test function Night Silent Operation Wiring Error Check...

  • Page 4: Piping Diagrams

    3. Piping Diagrams 3.1 30k Outdoor Unit Condenser Out Inlet Air Temperature Temperature Ø 6.35 Thermistor Thermistor Flare Connection Condensing Electronic Temperature Expansion Thermistor Valve ROOM A Main SVC V/V ROOM B Field Piping ROOM C Liquid(Ø6.35) ROOM D Pressure Sensor Main SVC V/V ROOM A...
  • Page 5 3.2 24k Outdoor Unit Condenser Out Inlet Air Temperature Temperature Ø 6.35 Thermistor Thermistor Flare Connection Condensing Electronic Temperature Expansion Thermistor Valve ROOM A Main SVC V/V Field Piping ROOM B Liquid(Ø6.35) ROOM C Pressure Sensor Main SVC V/V ROOM A Field Piping ROOM B Gas(Ø9.52)
  • Page 6 3.3 18k Outdoor Unit Condenser Out Inlet Air Temperature Temperature Thermistor Thermistor Ø 6.35 Condensing Flare Connection Temperature Thermistor Electronic Expansion Valve Main SVC V/V ROOM A Field Piping Liquid(Ø6.35) ROOM B Pressure Sensor Main SVC V/V ROOM A Field Piping ROOM B Gas(Ø9.52) Suction...

  • Page 7: Wiring Diagrams

    4. Wiring Diagrams 4.1 30k - 7 -...
  • Page 8 4.2 24k - 8 -...
  • Page 9 4.3 18k - 9 -...
  • Page 10 INV PCB CN-C_PIPE CN-SUCTION CN-AIR CN-DISCHARGE CN-LGMV CN-H_PRESS CN-MID CN-EEV4 CN-BLDC CN-EEV3 CN-EEV2 CN-POWER CN-EEV1 CN-UVW REACTOR_OUT2 CN-H_GAS CN-4WAY REACTOR_OUT1 REACTOR_IN CN-HEATER2 - 10 -...

  • Page 11: Exploded View

    5. Exploded View 5.1 30k 435512 435300 554031 447910 437212 137213C W6631 552115 552113 549610 559010 546810 554160 550140 552203A 165000 430410 552203B 561410 152503 661400A 661400B 437211 661400C 552200B 552202 661400D 237202 137213A 137213B 552116 349480 W49810 268711A W4986A 268711B 263230A W6200...
  • Page 12 5.2 24k 435512 435300 554031 447910 437212 137213C W6631 552115 552113 549610 559010 546810 554160 550140 552203A 165000 430410 552203B 561410 152503 661400A 661400B 437211 661400C 552200B 552202 237202 137213A 137213B 552116 349480 W49810 268711A W4986A 268711B 263230A W6200 W4986B 263230D 263230B 649950...
  • Page 13 5.3 18k 435512 435300 554031 447910 437212 137213C W6631 552115 552113 549610 559010 546810 554160 550140 552203A 165000 430410 552203B 561410 152503 661400A 661400B 437211 552200B 552202 237202 137213A 137213B 552116 349480 W49810 268711A W4986A 268711B 263230A W6200 W4986B 263230D 263230B 649950 263230E...

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A3uw24gfh0A2uw18gfh0Lmu240hhvLmu180hhvLmu300hhv

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