Microwave Drop-Down Door Oven Appears to Operate Correctly but Produces Little or No Heat


  • Misadjustment of switches
  • Relays 1 and 2
  • Control board faulty
  • Thermal cutout (magnetron) faulty
  • Monitor switch faulty
  • Monitored latch switch faulty
  • Open circuit wire harness
  • High voltage capacitor faulty
  • HV wiring faulty
  • HV rectifier assembly faulty
  • High voltage transformer faulty
  • Magnetron faulty


  • MDD little to no heat is produced
  • What causes the Microwave to not produce heat?

Steps to Verify Issue:

Turn the home circuit breaker to the unit off for 30 seconds then back on again. Then retest the unit operation.


If these steps do not resolve the issue, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

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