Randy A Lagrange , KY January 08, 2016 Warming oven only heated on high Called appliancePartsPros. They diagnosed the problem as a bad thermostat. ID'd the right thermostat and confirmed I could return it if it didn't fix the problem. It took a little effort to figure out how to get at the old one. Once I did, it was an easy fix. Great service, great help! Read More... 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Nut Drivers, Screwdrivers