Summit Control Board Processing Fault

Microwave keypad beeps but display does not change or accept programming

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.

Possible Causes

Corrupted control firmware, Faulty microcontroller on control board, Keypad communication error

Safety: Unplug the microwave before removing the control panel.

Steps:

Unplug the unit for 5–10 minutes to reset the control.
Plug back in and attempt to set the clock and start a simple cook cycle.
If beeps occur but no display changes, remove the control panel and reseat all wiring harnesses and the keypad ribbon cable.
If the issue persists, replace the main control board.

Hard 4/5

Main Control Board

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