Microwave displays F1 and may beep continuously; unit may not start.
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.
Possible Causes
How to Fix / Troubleshooting
Safety Warning: Unplug the microwave before any disassembly.
Reset and inspect:
- 1. Power cycle: Unplug for 10 minutes, then plug back in. If F1 returns immediately, the control board is likely faulty.
- 2. Check for moisture: Inspect around the control panel for signs of condensation or water intrusion. Allow to dry thoroughly and test again.
If F1 persists, the main control board will usually need replacement. This repair involves transferring wiring harnesses to a new board and should be done by an experienced DIYer or technician.
Repair Difficulty
Required Part
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