Model reference
LG GM-B258NKNM
Refrigerator
1 document14 error codes8 service modes
Available documentation
Service Manual
- Refrigerador Manual De Servicio73 pg
MyPros+ Max
Diagnose your LG GM-B258NKNM.
- 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 (14)
CodeMeaning
Er CFCondenser (machine room) BLDC fan motor anomalyEr COCommunication error between main PCB Micom and display Micom.Er dHBad defrostEr dSDefrost sensor errorEr FFFreezer BLDC fan motor anomalyEr FSFreezer sensor errorEr gFFlow meter sensor defectEr ISIce maker sensor errorEr lFIce maker BLDC fan motor anomalyEr ltIce maker equipment defectEr rFRefrigerator BLDC fan motor anomalyEr rSRefrigerator sensor errorEr rtRoom temperature sensor errorEr SSPantry sensor errorService modes (8)
- Display/Showroom ModeWith the refrigerator door open, press and hold the REFRIGERATOR TEMP and ICE PLUS buttons for more…
- Energy Saving Mode TogglePress ICE PLUS and Freezer TEMP buttons simultaneously for more than 5 seconds.
- Error Code Display CheckWithin 3 hours after an error, press ICE PLUS and FREEZER TEMP buttons simultaneously for 1 second.
- Lock ModePress and hold the LOCK button for 3 seconds
- Temperature Display Unit Change (°F to °C)Press and hold FRZ TEMP and REF TEMP buttons simultaneously for 5 seconds.
- Test Mode 1 - Compressor / Damper / All FansPress the test button on the main PCB 1 time
- Test Mode 2 - Damper ClosedPress the test button on the main PCB 2 times
- Test Mode 3 - Forced DefrostPress the test button on the main PCB 3 times
Full entry steps, exit procedures, and test sequences are available in Max.
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