Microwave displays F6 and may be completely unresponsive or behave erratically.

Safety first: Disconnect power before accessing internal components.

Reset and observe:

• Unplug the microwave for 10–15 minutes to fully discharge internal electronics.
• Plug back in and observe. If F6 appears immediately, a control board or communication issue is likely.

Inspect wiring:

• Remove the top grille and control panel to access the main control board and user interface board (if separate).
• Check the low-voltage harnesses between boards for loose connectors, pinched wires, or signs of overheating.
• Reseat all connectors firmly.

Corrective action:

• If reseating connectors does not resolve the error, one of the boards is likely defective.
• On many Maytag models, the electronic control board is the primary failure point and is replaced as a complete assembly.
• If the keypad and display are on a separate user interface board, that board may also be suspect if the display is blank or garbled.

Note: Diagnosing board-level communication faults often requires service documentation and specialized tools. Consider professional service for F6 errors.