Our oven does not stay at temperature. If you turn on oven and set the temp at 350 the oven will continue to heat and go way above 350 degrees causing several burnt meals. Any idea on how to repair this? Also one burn on the stove won't ignite. Stove/Oven is 9 years old.....is it worth repairing or should we look at scrapping it?
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Re: Tappan Oven overheats!!
If you have electronic controls, you'll need either the temperature probe (about $60.00) or the clock (about $150.00). You can test the temperature probe from behind the machine. It should read about 1080 ohms at room temperature. if the probe is good, replace the clock.
If you have mechanical oven controls, you need a new thermostat. Is the too high temp consistent? (i.e. runs at 375F +/- 25F?) If so, you can usually adjust the thermostat **** to read closer to the actual temperature.
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You can have the oven recalibrated by a professional OR you can purchase an oven thermometer and check the temperature yourself. Place the oven thermometer in the oven.Set the oven to a specific temperature. When it indicates it is at that temperature check the thermometer. Adjust your setting by that many degrees. For instance, if you set the temp at 350 and the oven thermometer shows 450, then reduce your temperature setting by 100 degrees each time you use the oven.
F2 Oven over temp - exceeded 590F with door in unlocked position or 990F with door locked - If actual temp condition occurred, look for welded relay contacts or high resistance connection or any cause in the oven temperature sensor circuit
F2 Note: Also see fan thermal switches - Indicates that oven is over temperature in one of the following modes within either a cooking or clean mode of operation. · Control senses oven temperature above 650 degrees F with the door circuit in the unlock mode. · Control senses oven temperature above 935 degrees F with the door in the locked mode. · Stalled cooling fan or airflow problem.
· Look for welded relay contacts. (Heating elements on in off mode). · Look for open thermal switch in lock motor circuit. Switch is normally closed and will open if area overheats due to fan not operating. Look for cause - fan thermal switch not closing, fan stalled, etc. · Look for high resistance in the oven temperature sensor circuit due to high contact resistance (poor terminal crimp, deformed terminals, loose connection) or intermittent solder joint on control or intermittent oven temperature sensor.
how do you know it is dropping 100 degrees ?
If the set temperature is 350-400 the heaters will work untill the thermostat will read that the temperature is reached - after that the heaters will shut down and the temperature will drop...and after few minutes when the temperature goes below thw set point (in this case 350-400) the heaters will turn on again - this will happen for the duration of the timing you have selected (example 45 minutes)