Fan not shutting off

[jimg3]

Model Number

NN-SN968B

Brand

Panasonic

Age

1-5 years

Woke up to fan running running on microwave. When opening the door - fan stops & light turns on. Pressing start (door closed of course) turns on light, carousel turns, food heats. Just the fan won't stop. Tested micro-switches with a multimeter - all seem to be operating correctly.

Disconnected the thermostat - fan (and everything else) turns off. Any suggestions welcome.

 

[jimg3]

Fan = cooling fan.

 

[jeff1]

Hi,

Still sounds like a door switch, door key, door switch mechanism issue.



jeff.

 

[jimg3]

Thanks for the chart Jeff. Not quite sure how that maps to my actual switches.



And here are the multimeter results.


Not sure on where the HV Transformer is, so I didn't perform that test.

 

[jeff1]

2 should open and 1 close when the door is opened, 2 should close and 1 open when the door is closed. If they check ok, leave a bad board as prime suspect....not overly common as the switches/switch mechanism!

jeff.