Problem: I posted my problem on another forum and they ran out of troubleshooting ideas. Any help here is greatly appreciated.
Appliance is a Kitchenaid KEBS207DWH8 Double Oven. Both ovens will not heat to desired temp. Set at bake 350 degrees and only heats to 225 after a long time. Broil only reaches a temp of 325.
Ohm and voltage tests all appear in spec. Voltage at terminal block is 120v for L1/Neutral and L2/Neutral. L1/L2 is 240v. Voltage for upper/lower inside & outside broil element is 237v. The bake elements are 237v.
Ohms for oven temp sensor, bake and broil elements and control panel thermal fuse are within spec. Although both inside broil elements were 33 ohms and spec is 45-55, not that much difference.
Note: early in the process I sent the control panel to FixYourBoard.com and they said there was a power problem but did not elaborate.
Am I missing something as to why they will not heat to temp?
Let's start at the beginning. First why did you send the board out? What did they fix?
If the board failed, when did it fail? start, middle, end of preheat? Were you doing an oven clean?
Both oven temp sensors ohmed out at 1080?
Have they been changed? Have they been hard wired (ditch the molex connector?)
When it's pre-heating you said it's cycling all three elements on an off? Each element when the board is calling you have 240vac to the element
You have ohmed everything which is good.... but under load something is being lost.
What I would do is set a pre-heat. listen for the relay to click for the element to start to heat. Check voltage, then when the next relay clicks in check voltage there. Keep doing this through the pre-heat My guess is either you are losing the voltage on one of the elements or one of the elements are failing under load.