F
LG
General System Fault
Single F or generic error on some LG models; often indicates main PCB fault.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Main control board failure, Firmware error, Internal relay fault, Power surge damage
How to Fix / Troubleshooting
Safety first: Unplug the washer before any internal inspection.
- Power reset: Unplug for 10–15 minutes to discharge capacitors, then plug back in and test.
- Check for other symptoms: Note any unusual noises, smells, or non-functioning components.
- Inspect PCB (advanced): If qualified, remove top panel and visually inspect the main PCB for burnt components or bulging capacitors.
- Professional repair: Generic F errors usually require control board diagnosis and replacement by a technician.
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Repair Difficulty
Professional Required
5/5
Required Part
LG Main Control Board (PCB)
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