C302U Double Oven cooling fans shut off immediately after finishing bake cycle. Replaced control board, still does the same. What controls the cooling fans to protect the circuitry?
All other functions are OK.
Ovens - Thermador - C302U Electric Double Oven
Answers & Comments
Newer versions of the control board software will run the cooling fans for a bit after the cycle ends, but many older models work like yours does
To Nater13: Thanks for your answers. Both fans do energize in all heating cycles but not after shut off. Add'l. info.: Wiring diagram shows relay k-4 energizes both cooling fans.
Wiring diagram shows relay k-5 is also connected to the upper cooling fan at pin # 94. Could it be that k-5 is the control that energizes the fans after baking either by temperature or time? Thanks again!
Bruce, did you ever get anywhere with this? Seeing the *exact* same thing with a C302ZS oven set (basically the same as yours). Replacing relay board didn't help. Diagrams look clear, but can't be sure if temp logic is on relay board (which I'd assume since it's also taking in the two temp sensors) or elsewhere like the controller hooked to the display panel. Would be glad to hear if you got any further!