KitchenAid Combo Unit (KOCE500ESS05) oven shuts off during preheating

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Brand: KichenAid
Model Number: KOCE500ESS05
Main Symptom: oven shuts off during preheating
What happens & when:

During preheating the oven will sometimes turn off as if the cancel button was pressed. The oven then goes to cool-down mode. The fan is working an stays on during cool-down. No error codes. If the oven is set to bake again it will begin preheating normally. This can happen a few times before reaching the set temperature.

This only happens randomly, not every time. Once the oven is at the set temperature it has never turned off unexpectedly.

Error Code (if any): none
Parts or tests already tried: none
Photos / video link:

Intermittent problems are tough to pin down, I would suspect the main control for the oven. It turns the elements on and off, W11179310 Wall Oven Control Board | Genuine Whirlpool OEM In Stock