DCS wall oven WOT-130ss error code

Oven/Range/Cooktop Repair
1

Brand: DCS
Model Number: WOT-130SS
Main Symptom: Error code F7
What happens & when: I have 2 ovens, so to test, I switched the temp sensor probe (did not fix the issue) then swapped the front display, then swapped the main board, (all were working fine in my spare oven. F7 still comes up & keyboard freezes. I have reset the breaker a few times (even shut it off for a couple days once) At this point I am looking for suggestions as to what I should investigate next. There was no trauma to the oven in the past 15 years & the plug to the sensor probe looked fine….

Error Code (if any): F7
Parts or tests already tried: Main board, temp sensor, front display board, ohmed & amped out all elements, both temp sensors, checked and tightened all board connections including ribbon strip to front display.
Photos / video link:

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The F7 error code will indicate a faulty keypad that would need to be replaced.

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Hi Ed, Thanks for the reply. I did replace the keypad. I have an update: This morning I replaced the temp sensor connector (at the sensor) and removed & cleaned the sensor connection on the board. Since the latest attempt, the error code has not returned, so hopefully I found the issue.