Model reference
LG GM-B259RT
Refrigerator
1 document11 error codes9 service modes
Available documentation
Service Manual
- Refrigerador Manual De Servicio80 pg
MyPros+ Max
Diagnose your LG GM-B259RT.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
Start diagnosing
$29/month · Cancel anytime · Or $9.95 3-day pass
Error codes (11)
CodeMeaning
Er CFBLDC condenser fan motor anomalyEr COCommunication error between main PCB and display PCB.Er dHBad defrostEr dSDefrost sensor errorEr FFBLDC freezer fan motor anomalyEr FSFreezer sensor errorEr IFBLDC ice maker fan motor anomalyEr ISIce maker sensor errorEr ItIce maker equipment defectEr rSRefrigerator sensor errorEr SSRoom temperature sensor errorService modes (9)
- Display Check FunctionSimultaneously press the Ice Ultra button and the freezer temperature adjustment button for 1 second
- Display Mode (Showroom)With the refrigerator door open, press and hold the REF TEMP and ICE PLUS buttons for more than 5…
- Error Code DisplayWithin 3 hours of error
- Ice Maker Test ModePress and hold the fill key for 3 seconds. The ice maker will extend through 3 stages step by step
- Lock FunctionPress and hold the LOCK button for 3 seconds
- Temperature Display Toggle (°F/°C)Press and hold FRZ TEMP and REF TEMP keys simultaneously for 5 seconds to toggle between °F and °C.
- Test Mode 1Press the test button on the main PCB 1 time
- Test Mode 2Press the test button on the main PCB 2 times
- Test Mode 3 (Forced Defrost)Press the test button on the main PCB 3 times
Full entry steps, exit procedures, and test sequences are available in Max.
Related LG refrigerator models
78,000+ service manuals · 160,000+ error codes · 55+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass