How to Fix / Troubleshooting

Safety: Unplug the microwave before removing the control panel.

Initial checks:

Wipe the keypad surface with a slightly damp cloth and mild detergent, then dry thoroughly. Sticky residue can sometimes affect responsiveness.
Check if some buttons work while others do not. A pattern of failed keys often indicates a membrane switch issue.

Panel inspection:

Remove the control panel assembly (usually by removing screws at the top or side).
Inspect the flat ribbon cable from the keypad to the control board. Reseat it carefully, ensuring it is fully inserted and locked.
Look for signs of moisture, corrosion, or burns on the keypad PCB or membrane.
If reseating the cable does not restore function, replace the keypad/membrane assembly or the entire control panel, depending on Summit's part design.

Reassemble and test all keypad functions before returning the unit to normal use.

Microwave displays E07 and will not accept input from some or all keypad buttons

Possible Causes