The microwave runs when the door is open. When you program it to heat and shut the door, the light comes on and the timer begins to count down but the turntable doesn't rotate and the oven doesn't heat.
I'd check to make sure you don't have a door switch that isn't functioning properly. Also, might be a control panel or control panel interface issue.
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SOURCE: I have a Hotpoint microwave
A microwave not heating up is caused by one or more of the following -
1) Failed controller board (unlikely if you are getting a clock readout
and you can get the various functions to work, just no heat)
2) Failed door switch
3) Failed thermal fuse, when used
4) Blown power fuse that is dedicated to the microwave circuit
5) Bad diode
6) Bad capacitor
7) Bad magnetron
8) Bad transformer
Door switches insure the microwave circuit will not engage when the
door is open. Slamming the door of the microwave is hard on the switch.
The thermal due is wired into the microwave harness, and is a melting
allow type, based on heat buildup within the oven. Always replace with
a fuse of the same thermal rating.
Hello,
The power fuse is a special type and should only be replaced with that same type and rating. It is easily tested.
The diode is a relatively inexpensive part, and is not easily tested.
If a grumble is heard coming from electrical area of the unit, then the
diode could be shorted.
A shorted capacitor will blow the fuse immediately. And open capacitor will cause a "no heat" condition.
A bad magnetron will also cause a low level hum or grumble from the
transformer. But is may also cause no other identifiable symptom of
failure.
A bad transformer will exhibit a grumble or hum, and may or may not
blow the fuse. But be careful here, the secondary of the transformer
produces very high voltages, up to 2.5Kv. Few people own a meter
capable of measuring such voltages.
Service and repair of microwave ovens is dangerous work. If you don't
know what your doing, DO NOT ATTEMPT TO SERVICE A UNIT WITHOUT
INSTRUCTION.
I hope this helps.
Good luck.
This indicates a bad door switch, or the keypad control board is not working properly.
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