Model reference
LG LMX28987ST/02
Refrigerator
1 document12 error codes10 service modes
Available documentation
Service Manual
- Refrigerator Service Manual95 pg
MyPros+ Max
Diagnose your LG LMX28987ST/02.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
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Error codes (12)
CodeMeaning
Er CFAbnormality of BLDC fan motor for mechanic room (condenser fan); no feedback…Er COCommunication error between MICOM of Main PCB and Display MICOM, caused by poor…Er dHPoor defrosting error; defrosting sensor has not exceeded 46°F (8°C) after 1…Er dSDefrosting sensor error caused by short or disconnection of the defrosting…Er FFAbnormality of BLDC fan motor for freezer; no feedback signal within 65 seconds…Er FSFreezer sensor error caused by short or disconnection of the freezer sensor.Er IFAbnormality of BLDC fan motor for ice making; no feedback signal within 65…Er ISIcing sensor error caused by short or disconnection of the icing sensor.Er rFAbnormality of BLDC fan motor for refrigerator; no feedback signal within 65…Er 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.Service modes (10)
- Display Check FunctionSimultaneously press Ultra Ice button and Freezing Temperature adjustment button for one second…
- Display Mode (Select/Cancel)With the refrigerator door open, press and hold the Refrigerator Temp Button and ULTRA ICE Button…
- Error Code DisplayPress the Ice Plus button and Freezer button simultaneously
- Icemaker Test ModePress and hold the Fill Key on the icemaker for 3 seconds. The icemaker will run through 3 stages
- Lock ModePress and hold the LOCK button for 3 seconds to lock the display, dispenser, and control panel.
- Power Save Mode TogglePress ICE PLUS Button and Freezer TEMP button simultaneously for more than 5 seconds to disable or…
- Temperature Display Toggle (°F/°C)Press and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
- Test Mode (TEST 1)Push the TEST button on the Main PWB 1 time
- Test Mode (TEST 2)Push the TEST button on the Main PWB 2 times
- Test Mode (TEST 3)Push the TEST button on the Main PWB 3 times
Full entry steps, exit procedures, and test sequences are available in Max.
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