F7
Whirlpool
Microprocessor or Control Board Failure
Microwave displays F7, may not start, or may run erratically
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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
Internal control board fault, Power surge damage, Corrupted microcontroller firmware
How to Fix / Troubleshooting
Safety: Unplug the microwave before any inspection.
- Power reset: Disconnect power for at least 10 minutes to fully discharge the control board. Reconnect and test.
- Check power supply: Ensure the outlet is properly grounded and not sharing a circuit with heavy loads that cause voltage drops.
- Inspect control board: Remove the control panel and visually inspect the board for burnt components, bulging capacitors, or corrosion.
- Replace control board: If F7 persists and no external issues are found, replace the electronic control board with the correct Whirlpool part.
Note: Firmware issues are not field-repairable; board replacement is the standard remedy.
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Repair Difficulty
Hard
4/5
Required Part
Electronic Control Board
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