Model Number: KEMS308SSS05
Brand: Whirlpool
Age: 6-10 years

We have a KitchenAid KEMS308SSS05. The lower oven starts to heat rapidly but will only get up to around 360-390 degrees and then it stays in the "preheating" cycle. I have replaced the thermostat and that did not fix the issue. I have the terminal block and the thermal fuse replacement parts ready but before I haul this monster out of the wall I would like your input on what you think it might be? The lower oven does get hot but stops and then it seems to drop in temperature. Any ideas here would be appreciated. Is it possible that the lower heating element could fail at a certain temperature? Thanks