F6
Kenmore
Communication Error Between Keypad and Control Board
Microwave displays F6 and may not respond to keypad inputs or may behave 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
Loose keypad ribbon cable, Corroded connector contacts, Damaged keypad membrane, Failed control board interface circuit
How to Fix / Troubleshooting
Safety: Disconnect power before accessing the control panel.
- Reseat keypad ribbon: Remove the control panel and carefully unplug the flat ribbon cable from the control board. Inspect for corrosion or damage, then reinsert fully and evenly.
- Clean contacts: If contacts appear dirty, gently clean with a soft pencil eraser or electronics contact cleaner (applied to a cotton swab, not sprayed directly).
- Check for cracks: Flex the ribbon slightly and look for visible cracks or breaks. If damaged, replace the keypad or control panel assembly.
- Test operation: Restore power and test multiple buttons. If F6 persists, the control board may need replacement.
Because this involves low-voltage circuitry, it is generally safe if the unit is unplugged, but avoid touching any other internal components.
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Repair Difficulty
Medium
3/5
Required Part
Control Panel / Keypad Assembly
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