I have a 7 year old JTP56 double convection oven, originally the convection bake wouldn't heat above 100 degrees, then the keypad lost some functions, I thought the control unit was bad and replaced cost about 200, and it worked for an hour or so then keypad went bad again and again no convection in upper oven. any ideas?
The key pads are notorious for failing in these ovens. Usually you get an F7 code. Exactly what is happening? Do all other functions work? Did you replace the keypad/console, or just the control board?
If you only have a problem with the convection function and have replaced the control board, then there may be a problem with the convection fan motor that is knocking out the convection circuit on the board.
If you are having different problems with other functions, my experience with these ovens tells me you need a new console. The silicone switches in the keypad fail on a regular basis. I read on line somewhere that a lawyer is trying to get a class action suit concerning them.
Thanks/Mike
Honestly, from what you describe it will be hard to diagnose long distance. It sounds like a control board problem, and I have recieved faulty controls in the past. I put 3 on my own personal oven before getting one that worked properly. Many of the controls we receive now for units over 5 yrs old are rebuilt instead of new.
The most common problem we run into is the keypad, as you can see from both of the solutions provided, but if you are not getting any failure codes it is hard to say.
The first thing I would do is check the ribbon connection at the control board. It is very possible that it is not inserted correctly or it is not locked in properly. Disconnect it and clean it with a paper towel, reinsert it and make sure the lock engages properly.
I will also add, it is not just GE with these types of problems, I run into the same failures on all brands.
Thanks/Mike
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The Keypad (membrane) switches seem to be malfunctioning, this is very common on ovens these days especially if the unit has been self cleaned often. If you replace the membrane switch the unit should have all its functions again.
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The convection roast is the only upper control still functioning, previously we could get the convection bake to work if we used the broil selection to heat up the oven and then change to con bake after the temp was high. At this time however after the new control board non of the functions except the con roast are working, the keypad doesn't register anything. I've had two other repair jobs on this oven previously door switch and some other small item, but apparently GE has some quality control issues.
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