LG Refrigerator LRSC26925TT Repair Manual

The LG Refrigerator LRSC26925TT is a 26 cubic foot French Door refrigerator with a bottom freezer, featuring LG's LinearCompressor™ technology, Smart Cooling Plus™ system, Door Cooling+™, Craft Ice™ maker, and InstaView™ Door-in-Door. This manual provides essential information for troubleshooting, maintenance, and repair procedures for qualified technicians. Below are key sections covering safety, diagnostics, component replacement, and specifications.

1. Safety Precautions 2. Model Specifications & Features 3. Diagnostic Mode & Error Codes 4. Component Testing & Removal 5. Common Troubleshooting 6. Wiring Diagrams 7. Parts List & Exploded Views 8. Performance Data 9. Reassembly & Verification 10. Regulatory & Warranty

Safety Precautions

Before performing any repair, disconnect the refrigerator from the electrical power source. Use appropriate personal protective equipment (PPE).

Hazard	Precaution
Electrical Shock	Unplug unit or disconnect circuit breaker before servicing.
Refrigerant	Only EPA-certified technicians may handle refrigerant. Use recovery equipment.
Sharp Edges	Wear cut-resistant gloves when handling evaporator coils or sheet metal.
Heavy Components	Use proper lifting techniques or assistance for compressors and condensers.
Flammable Materials	Keep open flames and sparks away during brazing or electrical work.

Model Specifications & Features

Model: LRSC26925TT
Type: French Door, Bottom Freezer
Total Capacity: 26.2 cu. ft. (Refrigerator: 17.5 cu. ft., Freezer: 8.7 cu. ft.)
Dimensions (HxWxD): 69.875" x 35.75" x 34.75"
Refrigerant: R-600a (Isobutane)
Compressor: LG LinearCompressor™ (10-year warranty)
Defrost System: Adaptive Smart Defrost
Ice Maker: Craft Ice™ (sphere ice) + Standard Ice in Freezer
Special Features: InstaView™ Door-in-Door, SmartThinQ® Enabled, Door Cooling+™
Electrical: 115 VAC, 60 Hz, 7.5 A

Diagnostic Mode & Error Codes

Enter diagnostic mode by pressing and holding the "Ice Type" and "Light" buttons on the control panel for 3 seconds. Use the Temp buttons to navigate.

Code	Description	Possible Cause
FF	Freezer Fan Motor Error	Obstruction, faulty fan motor, wiring
RF	Refrigerator Fan Motor Error	Blocked vent, failed fan, connector issue
dH	Defrost Heater Error	Open heater, defrost sensor, thermostat
PS	Power Surge/Supply Issue	Voltage fluctuation, main PCB
CE	Communication Error	Wiring harness, display board, main control

Note: Clear codes after repair by unplugging unit for 1 minute.

Component Testing & Removal

LinearCompressor™ Test: Disconnect leads, check resistance between terminals (typical 10-20 Ω). Listen for abnormal noise.

Evaporator Fan Motor: Remove freezer interior panel, disconnect connector, test for 120-240 Ω resistance.
Condenser Fan Motor: Access rear grille, check for free rotation and continuity.
Defrost Heater: Located behind evaporator. Disconnect and test for continuity (20-40 Ω).
Temperature Sensors: (Fresh Food, Freezer, Evaporator) Test resistance at various temps (see chart in manual).
Main Control Board: Check for burnt components, test input voltage (115 VAC).

Common Troubleshooting

Symptom	Possible Cause	Corrective Action
Not cooling	Compressor not running, blocked vents, low refrigerant	Check power, test compressor, ensure fan operation, verify refrigerant charge.
Excessive frost in freezer	Defrost system failure, door seal leak	Test defrost heater, thermostat, and sensor. Inspect and replace door gasket if torn.
Ice maker not working	Water supply issue, clogged filter, faulty valve	Check water line pressure, replace filter (every 6 months), test water inlet valve solenoid.
Unusual noise	Fan obstruction, compressor mount loose, tubing vibration	Inspect evaporator/condenser fans, tighten compressor mounts, secure refrigerant lines.
Display blank/error	Power issue, control board failure	Verify outlet power, test/replace main or display PCB.

Wiring Diagrams

Refer to schematic diagram on page 12 of the physical manual. Key connections:

Main PCB (Part # 6321ER1004A) to Compressor, Fans, Defrost Heater.
Display Board (Part # 6323ER2003B) to Control Panel and Main PCB via ribbon cable.
Water Valve (Part # 5230JA1002A) connections to ice maker and dispenser.

Warning: Always verify diagram revision matches your model's serial number range.

Parts List & Exploded Views

Common replacement parts for LRSC26925TT:

LinearCompressor Assembly: Part # 383JEA2001T
Main Control Board: Part # 6321ER1004A
Evaporator Fan Motor: Part # 4430ER1002B
Fresh Food Door Gasket: Part # MBR73879602
Craft Ice Maker Assembly: Part # 5230JA1003C
Water Filter: Part # LT1000P

Refer to Exploded View Diagram EV-27 for disassembly sequence and part locations.

Performance Data

Operating Pressure (R-600a): Low Side: 0.5-2.5 psig, High Side: 70-120 psig (varies with ambient).
Temperature Range: Fresh Food: 34-38°F (1-3°C), Freezer: -2 to 5°F (-19 to -15°C).
Defrost Cycle: Initiated every 6-12 hours based on adaptive algorithm. Heater on for 20-30 minutes.
Power Consumption: Approx. 560 kWh/year (ENERGY STAR® Certified).

Reassembly & Verification

After repair, reassemble panels and components in reverse order of removal.
Ensure all electrical connectors are firmly seated and harnesses routed away from sharp edges.
Restore power. Enter diagnostic mode to clear any stored error codes.
Verify cooling performance: Monitor temperatures reach set points within 24 hours.
Test all features: Ice maker, water dispenser, door switches, and display functions.

Final Check: Confirm no water leaks, unusual noises, or error codes.

Regulatory & Warranty

This appliance complies with FCC Part 15, Subpart B. The LinearCompressor™ carries a 10-year limited warranty (parts and labor, registration required). Other parts: 1-year full, 2-5 years limited (sealed system). For warranty service, contact LG at 1-800-243-0000 or visit www.lg.com. Use only genuine LG replacement parts.

Disposal: Dispose of in accordance with local regulations for appliances containing refrigerant and blowing agents.