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Old 02-23-2009, 02:29 PM   #1
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electric range, not keeping up temperature


When trying to use the broil option on my range, the top element overheated (like a lightbulb) and now it appears as though the element has a burnt/damaged spot on it. The top element will not glow now when requested. Since then, the whole oven has been behaving strangly. When using the lower element for baking the oven heats to the requested temperature. The display reads the desired temperature but it is not accurate. If I request 350 F, the oven warms up to this temperatuer (which appears accurate) and then starts to cool off with the logic still believing it is at 350 F. I can sometimes hear the relay in there clicking away far more frequently than one would expect for the heat cycle. I should note that the "preheat" stage is indicated by a little red light which moves to the "heat" stage after preheated is satisfied. Could the burnt out top element have caused some sort of hardware problem or is this likely a logic control issue? I feel the temperature sensor must work as to allow the preheat stage to complete. I have repaired the control board in furnaces before (and they are easy to buy) but I am guessing the complexity of the board in an oven is far more demanding. Do people usually just replace the range if the control board is bad? The range is a few years old.
thanks a lot

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Old 02-23-2009, 03:19 PM   #2
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electric range, not keeping up temperature


if it were me, i'd replace the element first, and see what happens from there.

DM

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Old 02-23-2009, 05:31 PM   #3
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electric range, not keeping up temperature


Quote:
Originally Posted by mrtmills View Post
The top element will not glow now when requested.
Probably it failed to an open circuit but check it with an ohmmeter. (240)/5kW = ~12 ohms.

Since then, the whole oven has been behaving strangly.
Also check that there is infinite resistance from the heater element to the tube that surrounds the ceramic center of the element.

Hopefully your oven is hardy enough that a single failed heating element does not cause failures that cascade upstream.

Last edited by Yoyizit; 02-23-2009 at 05:37 PM.
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