Model reference
LG LSC27931SW/01
Refrigerator
1 document10 error codes7 service modes
Available documentation
Service Manual
- Refrigerator Service Manual86 pg
MyPros+ Max
Diagnose your LG LSC27931SW/01.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Error codes (10)
CodeMeaning
Er 1Freezer sensor error (open or short circuit in freezer sensor)Er 2Refrigerator sensor error (open or short circuit in refrigerator sensor)Er 3R2 Sensor error (ICE PLUS LED turns OFF during LED check function)Er 4Defrost sensor errorEr 5Communication error between main PCB and display PCB (continuous information…Er 6Freezer fan motor BLDC error (locked or poor position signal for more than 115…Er 7Cooling fan motor error (same sensing method as freezer fan motor)Er 8Stepping motor damper errorEr 9Ambient sensor error (LOCK LED turns OFF during LED check function)Er rtWater-tank sensor error (displayed on screen)Service modes (7)
- Demonstration Mode (OFF Mode)1
- Display OFF ModePress FREEZER and ICE PLUS buttons simultaneously; all LEDs become ON then OFF with 'Ding~' sound…
- Icemaker Test ModePress the icemaker Fill Key (water amount selection button) for more than 3 seconds.
- LED Check FunctionPress FREEZER and ICE PLUS buttons at the same time for more than 1 second.
- Test Mode 1 (Freezing Force Mode)Press the test button on the main PCB once.
- Test Mode 2 (Compulsory Frost Removal Mode)While in Test Mode 1, press the test button on the main PCB once more.
- Toggle °F / °C DisplayPress and hold FREEZER and REFRIGERATOR keys at the same time for over 5 seconds.
Full entry steps, exit procedures, and test sequences are available in Max.
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