ErrorCodeDoctor
LG Microwave F13 error code
The F13 error means your LG microwave detected an abnormal voltage condition. This can be caused by an issue with the home's electrical supply or an internal component fault. There are no user steps to resolve this error and the unit requires a professional repair service.
Common causes
- Abnormal voltage detected in the microwave's electrical circuit
- Power surge or unstable home electrical supply
- Internal voltage regulating component has malfunctioned
How to fix it
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1
Disconnect the microwave from power for about a minute and plug it back in to attempt a reset
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2
Make sure the microwave is plugged directly into a dedicated wall outlet — not a power strip or extension cord
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3
If F13 returns after resetting contact a qualified technician to inspect the internal voltage components
Related LG Microwave error codes
F13 error — frequently asked questions
What does the F13 error mean on a LG microwave?
A voltage error was detected
What causes the F13 error?
The F13 error is usually caused by: Abnormal voltage detected in the microwave's electrical circuit; Power surge or unstable home electrical supply; Internal voltage regulating component has malfunctioned.
Can I fix the F13 error myself?
This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.
How much does it cost to fix the F13 error?
Fixing the F13 error on a LG microwave typically costs $100–$300, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my microwave with the F13 error?
We'd recommend addressing the F13 error before continuing to use the microwave, since hard-rated issues often involve a real fault rather than a minor glitch.