part cooling fan not turning off

[Klammerson]

Until now my part cooling fan worked fine.

I was able to change the speed and turn it on and off.

Today this changed. My part cooling fan is running constantly and I have no option to turn it off.

I still can change the speed but that's it.

[Klammerson]

I already tried this:

http://www.geeetech.com/forum/viewtopic ... 98&t=61646

but no success.

I measured the output and it sends full 24V to the fan all the time

[playsolitaireaz]

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