I have noticed that the fan oven in our Stoves Range cooker is staying warm all the time.
The top and sides of the inside of the oven are warm to touch - sufficiently to make the racks warm (not so hot you can't touch them). Something is obviously not switching off properly despite the oven control being off - can you help please by telling me what is causing this?
I assume you mean if the main electrical isolation is switched to on , the oven heats up even though the oven switch is correctly set to off ......if this is the case you require a replacement thermostat for the upper or lower oven
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The top cooling fan is not working which cools the electrics above the oven and the control panel at the front. It could be the fan is faulty , the pcb which controls it is faulty - inside back panel on right. There is also a resistor on the power to the fan which burns out. All easy do it yourself fixes if you are electrical competent.
The cooling fans under the cook top must blow to close fan sail switches. fans stop , oven shuts down. You may have a problem with your main controler board. Shut off yor breaker to range for at least 20min. retry, if it still does same thing your main board is NG. Its burried under the right side burrners.
I recomend calling thermador for service tech. Its not a do it your self thing.
We had ours fitted by a Stoves engineer who said he had the same cooker. He also told us that sometimes the fan will stay on after you have finished using it. The reason is, there will still be heat coming from the cooker or grill after use. For that reason, the fan stays on for a bit afterwards. Its just a safety precaution so that the knobs dont get too hot.
most common fault is the cooling fan is failing to come on, whreas the fan will be okay ( check windings with ohmn meter ) it will normally have a ceramic 10k resitor in series with the live which goes open circiut
Either teh grill element or the oven heating element is fault or the thermostat or grill regulator, locate which element is warm, if the grill then it is most likely the regulator, if it is the oven it is the thermostat.
This problem is caused by one of two components, depending on the model, there is a thermal cut in thermostat that keeps the fan running until the unit has cooled down and on some models there is a four wire timing device that keeps the fan running for a specific time after the temperature drops, the fault can only be casued by one of these components.
Smeg Service Engineer