LG BWC076GBAA0 - User Manual

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Room Air Conditioner

SERVICE MANUAL

CAUTION

-BEFORE SERVICING THE UNIT, READ THE SAFETY

PRECAUTIONS IN THIS MANUAL.

-ONLY FOR AUTHORIZED SERVICE PERSONNEL.

MODEL: BWC076GBAA0

BWC096GBAA0

BWC126CBAA0

(Applied to new refrigerant R-410A)

website http://biz.LGservice.com

e-mail http://ww

w.LGEservice.com/techsup.html

Questions and Answers

G
Gary ScottAug 2, 2025
What to do if my LG BWC076GBAA0 Air Conditioner runs but isn't cooling well?
- H
  herrerakimberlyAug 2, 2025
  If your LG Air Conditioner is running but not cooling effectively, several factors could be the cause. Start by checking the cold air circulation, outdoor coil, and ensuring smooth heat load flow. A dirty indoor coil could be the culprit, so clean the condenser. Also, check for gas leakage and ensure the unit is on a separate circuit. Other potential issues include a malfunctioning fan or compressor, or a clogged air filter. Check inside gas pressure, check clogging in the refrigeration circuit, and ensure satisfactory operation with a temperature difference of inlet & outlet air ; 44~50°F(7~10°C).
S
Samuel DeanAug 16, 2025
Why my LG BWC076GBAA0 fails to start?
- L
  Latoya CollinsAug 16, 2025
  If your LG Air Conditioner fails to start, begin by checking the power source, circuit breaker, and control switch. Issues such as gas leakage of the feeler bulb setting, improper wiring, a drop in power voltage, or an improper thermostat setting can also prevent the unit from starting. Defective fan or compressor capacitors, loose terminal connections, or irregular motor resistance or insulation could also be responsible. Check the capacitor and connect any loose wires.

Summary

Preface and Safety Information

Safety Precautions for Servicing

Essential safety guidelines for unit servicing, including power disconnection and insulation testing.

Insulation Resistance Test Procedure

Steps for performing an insulation resistance test to ensure user safety against electric shock.

Disassembly and Component Removal

Mechanical Component Disassembly

Steps for removing front grille, cabinet, control box, and related mechanical parts.

Air Handling System Disassembly

Electrical Component Removal Procedures

Guide for safely removing electrical parts like compressor, capacitor, power cord, thermostat, switch, and motor.

Refrigeration Cycle Service

Condenser and Evaporator Service

Procedures for removing and reinstalling the condenser and evaporator units.

Installation Procedures

Location Selection and Installation Checks

Chassis Installation Process

Troubleshooting Unit Start-Up Failures

Diagnosing Unit Start Failures

Flowchart to diagnose and fix problems where the unit fails to start operation.

Electrical Component Troubleshooting

Fan Motor Operation Issues

Compressor Operation Issues

System Schematics and Wiring

Circuit Diagram for BWC076;096 Models

Circuit Diagram for BWC126 CBAA0 Model

Exploded Views and Parts List

Replacement Parts Identification

LG BWC076GBAA0 Specifications

General

Brand	LG
Model	BWC076GBAA0
Category	Air Conditioner
Language	English

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