Model reference
LG LFX31925SB
Refrigerator
5 documents19 error codes24 service modes
Available documentation
Service Manual
- Refrigerator Service Manual88 pg
- Refrigerator Service Manual89 pg
- Refrigerator Service Manual88 pg
Bulletin
- Service Bulletin - Refrigerator: Additional improvement for ER/IF error code, noise from fan and frost in freezer4 pg
- Service Bulletin - Refrigerator4 pg
MyPros+ Max
Diagnose your LG LFX31925SB.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
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Error codes (19)
CodeMeaning
Er CFAbnormality of BLDC fan motor for mechanic room (condenser fan)Er COCommunication error between MICOM of Main PCB and Display MICOM, or abnormality…Er dHPoor defrostingEr dSDefrosting sensor error caused by short or disconnection of the defrosting…Er FFAbnormality of BLDC fan motor for freezerEr FSFreezer sensor error caused by short or disconnection of the freezer sensor.Er gFFlow meter (sensor) defectEr HSHumidity sensor error caused by short or disconnection of the humidity sensor.Er IFAbnormality of BLDC fan motor for ice makingEr ISIcing sensor error caused by short or disconnection of the icing sensor or ice…Er ItIce maker kit defectEr rFAbnormality of BLDC fan motor for refrigeratorEr rSRefrigerator sensor error caused by short or disconnection of the refrigerator…Er rtRoom temperature sensor error caused by short or disconnection of the room…Er SSPantry sensor error caused by short or disconnection of the pantry sensor.F dHFreezer defrosting errorF dSFreezer defrost sensor error caused by short or disconnection of the defrost…r dHRefrigerator defrosting errorr dSRefrigerator defrost sensor error caused by short or disconnection of the…Service modes (24)
- Display Check FunctionSimultaneously press Ultra Ice button and Freezing Temperature Adjustment button for a second
- Display ModeWith the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
- Display Mode (Showroom/Demo)With the refrigerator door open, press and hold the Refrigerator Temp button and ICE PLUS button…
- Error Code CheckWithin 3 hours after an error
- Error Code Check (within 3 hours)Press the Ice Plus button and Freezer button simultaneously within 3 hours of the error occurring.
- Error Code Display (within 3 hours)Within 3 hours after the error
- Error Code Display CheckWithin 3 hours after the error
- Ice-detecting Sensor Diagnosis1
- Icemaker Test ModePress and hold the FILL Key for about 3 seconds. The icemaker will run through 3 stages
- Sealed System Service Mode (3-Way Valve)Start with power cord unplugged
- Temperature Display Toggle (°F / °C)Press and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
- Temperature Display Toggle (°F/°C)Press and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
- Test 1 Mode (Comp/Damper/All FAN on)Push the test button on the Main PCB 1 time
- Test 1 Mode (Forced Operation)Press the test button on the Main PCB 1 time
- Test 2 Mode (Damper closed)Push the test button on the Main PCB 2 times
- Test 3 Mode (Forced defrost)Push the test button on the Main PCB 3 times
- Test Mode 1 (All On)Push the test button on the Main PCB 1 time
- Test Mode 1 (Comp / Damper / All FAN on)Push the test button on the Main PCB 1 time
- Test Mode 1 (Comp/Damper/All Fan On)Push the test button on the Main PCB 1 time
- Test Mode 2 (Damper closed)Push the test button on the Main PCB 2 times
- Test Mode 3 (Forced defrost mode)Push the test button on the Main PCB 3 times
- Test Mode 3 (Forced Defrost)Push the test button on the Main PCB 3 times
- Toggle °F / °C DisplayPress and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
- Toggle Display °F / °CPress and hold the FRZ TEMP and REF TEMP 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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