F7E0
KitchenAid
Power Relay or Power Supply Failure
Microwave displays F7E0 and will not start; sometimes occurs after a power surge.
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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
Failed power relay on main control, open line fuse, defective noise filter board, damaged power supply circuit on control
How to Fix / Troubleshooting
High-Voltage and Line-Voltage Safety: Unplug the microwave and verify the circuit is de-energized before servicing. Internal line-voltage components can cause shock.
- Check house power: Confirm the outlet has correct voltage and polarity using a plug-in tester or multimeter.
- Inspect line fuse: Access the internal line fuse (usually near the power cord entry or noise filter board). If blown, investigate for shorted components before replacing.
- Noise filter board: Inspect the noise filter / line filter board for burn marks or cracked components.
- Control board: If the fuse and filter are good, the main control's power relay or power supply may have failed. Replace the main control board with the correct KitchenAid part.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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