Fan Time Delay Module bypass / Manual Fording Switch

[dherman304]

My TDM went bad and I'd like to bypass the TDM and possibly build a manual Fording switch that turns off the fan. Before I recreate the wheel I was wondering if anyone has done this before?

Also, I'm well aware if the military or designing engineers wanted a manual switch they would have installed it but for the typical home-gamer it might not be a bad idea.

 

[Mogman]

It would be easy enough to do, if nobody has a schematic I could work one up, easy peasy.
You would need a 24V relay (with normally closed contacts) a switch and a fuse.

 

[Mogman]

This is how I would do it, I added a diode to also protect the relay contacts, it should be a 1000V 1A (1N4007) diode.
It is a little sloppy, sorry...

I would use this relay, and of course carry a spare, this relay is "protected" meaning it protects the fan thermal switch against reverse EMF, paying attention to the terminal numbers is important.
Yes it is CHICOM but at least it carries the HELLA name.

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