LG LFC25760ST - User Manual

CAUTION
BEFORE SERVICING THE PRODUCT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
REFRIGERATOR
SERVICE MANUAL
COLORS: WESTERN BLACK(SB)
TITANIUM(TT)
SUPER WHITE(SW)
STAINLESS(ST)
LFC21760ST LFC25760SW
LFC25760SB LFC25760TT
LFC25760ST
MODELS:

LG LFC25760ST Specifications

General

Type	French Door
Total Capacity	25.5 cu. ft.
Width	35.75 inches
Ice Maker	Yes
Energy Star Certified	Yes
Finish	Stainless Steel
Water Dispenser	Yes

Summary

1. SPECIFICATIONS

2. PARTS IDENTIFICATION

3. DISASSEMBLY

4. ADJUSTMENT

4-1 COMPRESSOR

Explains the compressor's role, composition, and essential handling precautions.

4-2 PTC-STARTER

Details the PTC starter's function, role, and usage guidelines in motor starting.

4-3 OLP (OVERLOAD PROTECTOR)

Defines the OLP, its role in motor protection, and operational notes.

5. CIRCUIT DIAGRAM

6. TROUBLESHOOTING

6-1 COMPRESSOR AND ELECTRIC COMPONENTS

Diagnostic steps for compressor and related electrical component issues.

6-2 PTC AND OLP

Troubleshooting specific to the PTC starter and Overload Protector (OLP).

6-3 OTHER ELECTRICAL COMPONENTS

Troubleshooting for other electrical parts like fan motors and defrost heaters.

6-4 SERVICE DIAGNOSIS CHART

A table correlating common complaints with points to check and remedies.

6-5 REFRIGERATION CYCLE

Troubleshooting the refrigeration system based on unit state and refrigerant flow.

7. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER

8. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM

8-1 FUNCTION

Overview of the refrigerator's main functions, temperature control, and display.

8-1-8 Defrosting

8-1-10 Defect Diagnosis Function

8-1-11 TEST Mode

8-2 PCB FUNCTION

8-2-1 Power Circuit

8-2-4 Load; Buzzer Drive & Open Door Detection Circuit

8-2-5 Temperature Sensor Circuit

8-2-6 Refrigeration Compartment Stepping Motor Damper Circuit

8-4 TROUBLESHOOTING