Model reference
LG FQ-550X
Refrigerator
1 document8 error codes4 service modes
Available documentation
Service Manual
- Refrigerator Service Manual126 pg
MyPros+ Max
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- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
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Error codes (8)
CodeMeaning
ErOutside (ambient) temperature sensor failureEr CFFailure of BLDC fan motor in machine roomEr COCommunication failure between main PCB and display PCBEr dHPoor frost removalEr DSFrost removal (defrost) sensor failureEr FFFailure of BLDC fan motor in freezing roomEr FSFreezer sensor failureEr RSRefrigerator sensor 1 failureService modes (4)
- Ice Maker Test FunctionPress the ice maker test switch (located under the automatic ice maker) for more than 0.5 seconds…
- LCD Check FunctionSimultaneously press the special freezing (Super FRZ) button and cold storage (refrigerator)…
- Test Mode 1 (Forced Cooling / Freezing Force Mode)Press test button on main PCB once.
- Test Mode 2 (Compulsory Frost Removal Mode)Press test button on main PCB once while in Test Mode 1.
Full entry steps, exit procedures, and test sequences are available in Max.
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