hi to all , in a 850 t5 SW 94 , my heater & air conditioning blower/fan not working . In control unit the lights when is off is opened , the AC working but not put air at any position low or high , cold or hot !
any suggestions?
look for a relay not found only have fuse number 31 25A witch is fine .
Thanks

 

The fan is mercifully easy to get to, and so I would just look to see if you have power to it; bench test it and then you can decide if that's the problem. If it's not, then you have a problem with the controller(s).

If you have automatic a/c, there will be a separate fan control module powering the fan and that's all there is. If you have manual a/c, then there is both a relay and also a set of three resistors. The relay on a manual a/c car just bypasses everything so you have battery power straight to the blower.

These resistors OR the fan control module both get hot so whichever one you have will be mounted in the a/c case right next to the fan. The relay, if present, is mounted in the same area, but it doesn't have to be in the case. Just look for where the power wire to the fan leads back to.

 

Thanks a lot for the info ! I found the location of the fan , I will look if I have power , I think I have a manual ac , so I will look for power and then the resistors , very helpful