The problem appliance is a GE Profile 30" double wall oven.
serial #FV6 72054Q
The closes matching model number at repairclinic.com is JT950SA1SS,
which appears to be the correct oven.
I asked about this a couple of weeks ago, when the lower oven quit
working. After some experimentation and poking around with a voltmeter,
I've learned where the problem is.
The lower oven has a "thermal switch," located in the space between the
two ovens. It is supposed to open at 275F. It is a manual reset type
If the lower oven is run through it's self cleaning cycle, all is well
for about 2 1/2 hours (the minimum self-clean cycle is 3 hours). Then
the thermal switch trips and the lower oven is disabled.
The fan in the space between the ovens comes on long before the thermal
switch trips, and stays on.
Here are a couple of scenarios:
1) the switch is opening at too low a temperature - I could measure the
temperature in the space with an oven thermometer and if the switch
opens at too low a temperature, replace the switch
2) the temperature in the space is too high - what would cause that?
Insufficient ventilation (the fan is on)?
3) I'm not too keen on the idea of replacing the switch with a piece of
wire - the switch is an obvious safety feature.
I don't really care if the switch only trips during the cleaning cycle.
I'm more worried that it will trip in the middle of cooking the
Thanksgiving turkey (this may be the next experiment)!
Any ideas from the appliance experts? Thanks!