Roof exhaust fan

[Glenn Briglio]

The rear roof fan stopped working. All fuses in fuse panel are good

[Beau388]

Originally Posted by Glenn Briglio

The rear roof fan stopped working. All fuses in fuse panel are good

Time for a voltmeter.

[Edensob]

Glenn, what you will need to do is determine if you have 12 volts at the fan. If you do, then check to see if voltage is getting all the way to the fan motor. If it is, your motor is shot and needs to be replaced. If you have an interlock that prevents the motor from running unless the cover is open, make sure to check that. If there is no voltage to the fan then, start backtracking to the switches that turn it on and off to determine which switch might be defective and needs to be replaced. Your units electrical diagrams from Thor will give you the basic layout for the wiring of your unit. Individual switches can be checked using the ohm function on the multimeter. Make sure you have no voltage when using this function and the wiring is disconnected so not to get a false reading. There are many video's on the net on using a multimeter if you are not sure. If all switches are good, then you may be forced to check the individual wires to make sure a varmint has not chewed things apart. Again, you can use the voltmeter to determine voltage and connectivity using the ohm scale. Be slow and methodical and you will find the issue.

[abjbrtd]

NOT sure which fan you have!

I had to change our switch/circuit board a couple of yrs ago.
Easy to take apart.
Easy to test 12v & ground (t ok) with a multimeter (volt meter).
Easy to test motor (t ok) = failed switch/circuit board.
Easy to find and order new board.
not easy to put back together, needed 3 hands .