Does anybody know much about temperature probes like how they work and how I should approach this issue?
QuoteDoes anybody know much about temperature probes like how they work and how I should approach this issue?You don't go to the hospital and ask the surgeon how he knows his stuff...he just does, and he's not oblilgated to explain himself.Your oven has at least one problem that I can identify, and if there was a cheap, easy way for you to get out of buying a new oven, I would be happy to tell you. It is in our best interest to sell you parts anyway, so if we tell you there's no way around a problem you can usually take that to the bank.To address one of your questions, the part which is now broken and obsolete is a combination oven sensor and high-limit thermostat for the self-clean cycle. Not only does it monitor the oven temperatures by means of an internal thermister (now broken), but contains contacts that are set to open at 975 degrees F during the self clean program. Later models did away with this type of control since it was too difficult to replace in the field versus a standard oven sensor. GE made a similar oven in the 80's that proved to be cumbersome also. The part number last recorded for this is 702812...maybe you can find one on Ebay.
You're saying that thermostat has an internal thermistor as well as a mechanical thermostat? The only thing I saw was what I'd describe as a mechanical thermostat where you have some porcelain, a metal rod at the end inside of a metal tube that pushes on a mechanical switch. That mechanical switch on top has an electrode that rubs against a conductive surface that sort of looks like a rudimentary circuit board where you have two wires coming out of opposite ends and you have a circuit path on this board, the electrode rubs against this surface and acts like what I'd believe would be a throttle position sensor in a car.
So after all this fiddling around, you still have an oven that doesn't function properly, yet you present this as though you conquered the problem by jerryrigging.It is my hope that any one reading this will have too much common sense to tamper with electro-mechanical devices which have been built to factory specifications. Now, if your house catches fire due to a runaway oven, you will have no recourse from JennAir since the unit has been 'modified'.