My microwave will not heat. It appears to work in all other ways (e.g., clock, lights, turntable, etc). I found the wiring diagram and it appears that the hood thermostat is open (i.e., no change in ohm meter). I have read a couple of related answers and I am having a difficult time following the answers (yes, I am a novice). First, will a defective hood thermostat cause the microwave not to heat? Second, is a hood thermostat defective if I get no effect on the ohm meter? Thanks
Answer Hello Bill,
You are correct. The part will cause no response in the meter if it is open, (bad). The hood thermostat or bottom T.C.O., WB27X1127 (thermal cut out), will prevent the unit from operating.
Microwave stopped heating. Replaced magnetron with no success. Found blown fuse and thermostat with no continuity. Replaced both and heat was ok, but vent fan runs constantly. I wonder if thermostat should have been open and the issue is somewhere else.
Answer Keith ric,
The thermostat for the fan will not open until the temperature reaches a certain point. If the thermostat was on the base behind the control panel that was replaced then there were probably 2 and one should be open and the other closed. If the 20 amp fuse was blown then that would most likely be the issue that was going on.