Symptoms
- A code, letter, or number combination shows on the display
- Microwave may beep repeatedly or refuse to start
- Error may appear consistently or only under certain conditions
- Display otherwise functions normally
Likely causes
- CommonDoor switch fault codeMany models show a specific code when a door switch reads incorrectly.
- CommonSensor fault (weight or humidity sensor on sensor-cook models)These sensors can fault and trigger a specific error code.
- PossibleControl board communication faultSome codes indicate an internal board issue rather than a specific part.
- PossibleOverheat protection tripSome units show a code if internal temperature sensors detect an issue.
What to do
- Write down the exact code or message shown, since precise codes matter for looking up the correct meaning.
- Check your owner's manual or the manufacturer's website using your exact model number to find what that code means.
- Unplug the microwave for about a minute to attempt a full reset, then plug it back in and see if the code clears.
- If it returns immediately, avoid repeated attempts to run the microwave, since some fault codes indicate a real safety-related issue like a door switch problem.
- Note any conditions that trigger it, like only during longer cook times or only right at start-up.
- If you can't find what the code means or it persists after a reset, contact a technician with the exact code and model number.
When to call a pro
If a reset doesn't clear the code, or you can't determine its meaning, an appliance technician can diagnose it using your exact code and model number.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.