Hi,
I have a Maytag Gemini stove model # MER6872BAW, about two weeks ago everyone started noticing that nothing was getting fully cooked in the upper oven. We use the upper oven a lot so I figured it was either the sensor or the element.
I stuck a fireplace thermometer in the upper oven just to make sure everyone wasn't going crazy, the temp on the oven's digital display said
400 degrees, the fireplace thermometer said 310. I stuck the thermometer in the lower oven, the display and the thermometer both said 400 degrees.Figuring that it was the sensor I replaced it, the upper oven still acted the same. I was able to find a schematic for the oven on Sears.com, the sensor goes straight back to a connector on the circuit board inside the control panel.
The new and old sensors both read a little over 1000 ohms, the sensor connectors for both lower and upper ovens are both reading 5.15 volts DC. My only guess on this is that there is something wrong with the circuit board. I looked it over all the parts look fine, no burnt resistors, none of the capacitors are bulged at the top, no popped transistors.
The oven did give me a code F9-3 while I was working on it which decodes to: "Check for obstruction in door lock mechanism" (there is nothing in the mechanism). Oddly enough six months after we had this stove it gave that code with no warning at all, it gave another code too but I do not remember that is was. A month later it did it again, then no problems with it at all for three years until too weeks ago.
Anyone have any suggestions on what might be wrong?