Microwave Diagnostics

KitchenAid Microwave
Error Codes

Meanings, severity levels, safe checks you can perform, and when to call a technician.

Enter the code shown on your microwave display

Is it safe to keep using it?

Depends on code severity. Low/Medium codes often allow continued use, High severity requires immediate stop.

Can error codes be reset?

Some codes clear after power cycle. Persistent codes indicate underlying issues needing repair.

When should I stop using it?

Stop immediately for water leak codes, burning smell, or any High severity error.

Most Common Codes

SE PF F7 F9 F6 F5 F4 F3 F2 F1

All Codes

F1 F2 F3 F4 F5 F6 F7 F9 PF SE

Error Code Directory

Click any code for detailed troubleshooting steps

Low Medium High

Code Meaning Severity Common Symptom

F1 Main Control Board Fault High The display shows F1 continuously and pressing the Cancel or Off pad has no effect beyond producing a beep — normal cooking operations cannot start. View F2 Stuck Keypad Button Medium Pressing any pad produces no effect and the display shows F2 continuously, even though the microwave itself appears to have power and the clock is running. View F3 Humidity Sensor Fault Medium Attempting to start a Sensor Reheat, Sensor Popcorn, or Auto Cook program produces F3 on the display rather than starting the cycle. Manual time-based cooking still works normally. View F4 Cavity Temperature Sensor Medium Attempting to start a convection bake, roast, or combination cycle produces F4 immediately. Straight microwave cooking remains available on non-combination models. View F5 Cooling Fan Fault High An active cook cycle shuts down mid-operation and the display shows F5. Food is partially cooked and the turntable stops rotating. View F6 Magnetron Fault High The cook cycle starts, the turntable rotates, and the fan runs, but food comes out the same temperature it went in because the magnetron is not producing cooking energy. View F7 Door Switch Fault High Pressing Start produces F7 on the display and no cook cycle begins, even though the door appears to be properly closed and latched. View F9 Communication Loss Medium The control display has stopped updating and either shows F9 continuously or goes blank and returns intermittently as the serial link drops. View PF Power Failure Notification Low The panel shows PF or flashes 12:00 (or equivalent default time) after electricity is restored, indicating the clock memory was lost during the outage. View SE Shorted Keypad Error High The display shows SE continuously and no buttons produce any action, including Cancel or Off. The microwave cannot be operated from the panel. View