F6
JennAir
Communication Error Between Control Boards
JennAir microwave displays F6 and may shut down or refuse to start; sometimes intermittent.
Advertisements
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.
Advertisements
Possible Causes
Loose wiring harness between user interface and main control, Failed user interface board, Failed main control board, Oxidized connectors
How to Fix / Troubleshooting
Safety First: Disconnect power before removing any panels.
- Access controls: Remove the top grille and control panel to access the user interface (UI) board and main control board (if separate).
- Inspect harnesses: Check all multi-pin connectors between the UI and main control. Look for loose plugs, bent pins, or corrosion.
- Reseat connectors: Unplug and firmly reconnect each harness one at a time to ensure a solid connection.
- Check for damage: Look for signs of moisture intrusion, burned components, or cracked boards.
- Test operation: Restore power and test. If F6 persists, isolate by replacing the user interface board first (often the more common failure). If the issue remains, replace the main control board.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
User Interface Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements