Top and bottom oven started throwing F1-1 and F1-2 error codes, but only when BOTH ovens were in use. Separately used, no error codes. Replaced both upper and lower oven sensors. The other night we had both ovens in use. Bottom oven threw an F3-2 code and shutdown.
Again, this only happens when both ovens are in use. Did not swap out the wiring harnesses for either even though the sensors did ship with what looked like harnesses. Control board?
Cheers,
Greg
Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=MER6770AAW
If you click on the part’s description or picture a new page will open often with more info on that part which may be useful to you.
Here is a service manual.
You will have to join the site and be logged in to be able to download it.
http://appliancejunk.com/forums/index.php?action=downloads;sa=downfile&id=390;t=1416399501
As long as you are sure that the connection from the sensors to the boards are good then I would say that it is the control board.
I would double check the connections.
Much appreciated. Connections are tight. Even swapped out the harnesses. Control Board is kind of pricey and the oven is older so I might be looking at forklifting this unit and getting a new oven.