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Probably went bad a lot of exhaust dirt gets in there. Make sure power is off take it out and replace it ,you can find one at your local Grainger if not they can match it up.
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Some models the cooling fans come on when you start the oven. In some models the cooling fans comes on only when the control compartment reaches a certain temperature. In this case there is a reverse thermostat. It will close for the fan circuit when it reaches the temperature thus starting the cooling fan.
From my experience the most common reason for this failure is a thermal switch for cooling fan. It is located on the upper side between the wiring and its function is to switch off the cooling fan when the temperature drops even though the oven is already turned off. If the cooling fan does not work then it will increase the temperature on the cabinet and the main temperature limiter will switch off the oven.
First things first. There are two fans. One in the bottom oven and one to provide background cooling. The background cooling fan turns on when anything is turned on. (Fan oven/top oven/grill). Just operate the top oven for a moment and this should cause the cooling fan to operate. There is a printed circuit board that controls the cooling fan and for how long the fan should stay on once everything has been turned off. (About 7 mins). If this fan is not running then the fan/motor could be faulty, or the circuit board or the resistor on the fan terminal block. The reason the oven will not turn back on is that the residual heat in the oven unit as a whole against the fan oven, is probably too high which causes the overheat device to operate.
You will have to take the oven out of the kitchen carcass, take the top and rear panels off and get an electrician to test and found out which item is not working/failed. Try espares for parts.
The reason the oven is shutting down is because it is overheating due to the cooling fan not working, and a safety thermostat is turning the oven off.
You need to repair or replace the exterior cooling fan.
it is the cooling fan if you have already replaced the thermal fuse on the back then replace the fan also shop around that price for the fan sounds high
Hi I am Vortash the cooling fan must be controlled by a thermostat , it appears that it has a problem on it and is not shutting off .
They are usually normally open contact switches that are on the top or the side of the oven ,they heat up close the connection and turn the fan on . yours sounds as if it is sticking . Other ovens are controlled by a rheostat a long tubed thermostat that goes to a main control consul on the oven , it controls the fan and responds to what the stat tells it .
It may be this controller is not turning the fan off afterwards , my suggestion is that unless you are electrically trained you get the help of a service engineer to check your oven out .... regards Vortash
I had the same problem. The screen protecting the fan bends into the fan from the heat. Take off the top front control panel (3 screws), reach in to the back where the fan is and push the screen back away from the fan. As always, turn the power off first to avoid shock. This should solve your noise problem.
3 to 4 hours is a long time. Get to the fans (behind the control panel) and check the screens for dust. Chances are the screens are clogged with dust and need to be cleaned so the fans can move air for cooling better. I had this problem on my GE JTP14, and after cleaning just one fan it can keep up with cooling the electronic area while the oven is running. It runs much less often.
Safety first! cut the breaker before removing anything with a nice conductive screwdriver! Hope this helps!
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