CostolioLG microwaves error codes
1 microwave error code for LG microwaves, what each one means and what to try, paraphrased from LG's own source. Codes vary by model, so confirm in your own manual.
All codes
- F3 Foreign substances around the touch button panel can cause F-3 errors.
F3
What it means: Foreign substances around the touch button panel can cause F-3 errors. This one often needs a licensed technician.
What to try
- Wipe off any foreign substances from the touch button panel and check again.
- Unplug the electrical cord and plug it back in to check if the same error reappears.
- If the symptoms persist, call for an inspection service.
Source
- LG Microwave: troubleshooting an F3 error (LG US Help Library) (checked 2026-11-02)
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