A/C not blowing cold.
 

My A/C is warmer than it should be. So much so, it's hard to say whether it's working at all.

The compressor is engaging when either A/C button is pressed but the front fan doesn't seem to be coming on.

So, potentially, fuse, relay or ballast.

How do I figure out which of these it is?

Thks

G

Yes you definitely have to check the Cabin Fan Fuse in the main Fuse Box.

There are no relays or ballats for the cabin fans to check, because the signal goes through an amplifier.

Specifically try Page 5, B.

http://site.ecudoctors.com/tech-data/Porsche-964-993-HVAC-CCU-Troubleshooting-Guide-Testing-Procedure-Complete.pdf

The idea of the test is to separate whether the problem is in the Climate Control Unit or in another part of the car.