Question about Thermador Ovens
Getting past 400 deg. Elements dont appear to get red hot.
Why is the oven temperature incorrect?
The oven temperature control is usually controlled by a thermostat that uses a capillary and liquid filled bulb. When the bulb's liquid gets heated up, it expands and puts pressure on a diaphragm which opens and closes a switch that controls the gas to the burner. Just set the dial to what you need the temperature to be. Over time, it is possible for your thermostat to lose its calibration. Sometimes, the thermostat sensing bulb comes loose from the holder. If it is out of place, the thermostat may be getting faulty readings. If this is the problem, re-aligning the bulb properly will take care of this problem.
Digital display models use a sensor to control temperature. If this is faulty, replace it. Other ovens use a mechanical system to control the temperature.
On many models, you can adjust your oven thermostat using a small screwdriver. The adjusting screw is located on the thermostat valve stem. Remove the knob and you'll see the screw underneath it. You want to turn the oven on and run it through at least two cycles while watching a calibrating thermometer in the oven for high and low temperatures. Adjust the screw as necessary to fine tune the temperature.
Some models don't have an adjustable thermostat, and you will have to replace the thermostat if you want to resolve the problem.
The oven sensor: works with the oven control board to regulate the oven temperature. If there is an oven temperature problem, this sensor might be defective. The sensor can be tested by using an ohm meter. As temperature rises, the resistance measurement also rises. The manufacturer of the oven sensor determines the correct resistance, Oven temperature problems can be caused by other things, but this is one of the common causes.
Beware on some models now most of these ovens they are electronic and they are integrated into the control itself
some different sensor ohm readings at room temp. approx 16 ohms at room temperature and at 350?F it is 29~33 ohms.
The reason for my free advice is GOD is good!
found this helpful answer from an appliance technician on JustAnswer com
Posted on Jan 11, 2017
Wekiwa, your TCO, (thermal cutout) probably opened during the high temps in self clean. You will have to remove the back panel and replace it. It should be just under the vent back there. Part number 4450934. You can ohm it out first to make sure, it will show open (no continuity) if bad. This is an easy job, won't take you that long. Kill power to the range before going back there. In doing a little more research on your model, I see there was a service flash where they recomend moving the TCO over to one side so the cleaning cycle doesn't affect the TCO. This may be covered by Whirlpool. You might want to call them and inquire. Catriver..post back.
Posted on Dec 18, 2006
SOURCE: Heating elements do not heat
this problem your having is some connected with your oven shut down thermostat.if that does not solve your prob.next solution would be to check that control board.
Posted on Jun 25, 2007
The control switch may be bad on it. If there are 2 elements on the top, they both are not bad at the same time.Check to see if the wires have not burned off the control switch first. Check to see if your breakers are O.K. Turn them both(maybe 3) off and then reset.
Posted on Jan 30, 2009
I replaced the relay board for the top oven (the one with the transformer) and it works properly now. My issue was only for the top oven so you probably have to replace both relay boards since both ovens have only the top element working.
318022002 is the part number for the relay board with transformer
318022001 is the part number for the relay board without transformer
Yes the one without the transformer is more expensive for some reason.
The boards are on the top of the oven, I was able to pull out the oven about 75% of the way out of the cabinet and easily get to the boards. Just unplugged the connections and plugged them into the new board.
To get the oven out there are two small screws that go into brackets inside the top oven door. Highly recommend taking the doors off the oven to pull it out, much easier to work with.
NOTE: On my old board I noticed one solder joint that was burned out and I since I already had the new board I just replaced but you might want to check that first and see if just a solder fix gets you working again before you spend $$ on a new board.
Posted on May 13, 2009
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Posted on Jan 02, 2017
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