KitchenAid · Microwave Combination Oven
This error indicates that the oven's User Interface (UI) is unable to communicate with the Microwave Oven Appliance Manager. This lack of communication prevents proper control and operation of the microwave functions.
Click steps to track your progress.
Turn off the oven power at the circuit breaker, wait 10 seconds, then turn it back on.
Ensure that all external connections, especially where the control panel meets the main unit, are secure.
Enter Diagnostics mode by pressing CANCEL>CANCEL>START, then press the 3 or 6 keypad to scroll to the Faults screen and verify the E8 error code.
Clear the error codes from the Diagnostics Menu by pressing CLOCK/TOOLS, then START.
If the error persists, the internal communication harness or control boards may require professional inspection and repair.
If the UI was recently replaced, follow the 'Cavity Size Select' procedure in the manual.