A/C Clutch not engaging

[GTHill]

My A/C clutch won't engage. I started a thread looking for the fuse but apparently mine has a Vansco control system instead of a fused system like is supposed to come on '03s?

My Vansco doesn't have any output named A/C clutch. All three blower lights come on when the A/C is turned on.

Any help is much appreciated!

GT

[RJay]

I could be you need freon. There is a pressure switch that allows the compressor come on at a certain pressure. Not sure if yours is the same set up but you might want to check your freon.

[GTHill]

Quote:

Originally Posted by RJay I could be you need freon. There is a pressure switch that allows the compressor come on at a certain pressure. Not sure if yours is the same set up but you might want to check your freon.

Oh really? I was actually going through the process of adding freon but the directions on the freon canister said not to put more in unless the compressor was on.

Adding freon fixed it. Thanks!

GT

[Wil Rathke]

I .had the same problem and traced it to the low pressure switch. I bought a container of freon with a pressure gauge attached. Got it at Walmart. I attached the gauge to the low side connector and found that the pressure was too low for the switch to turn on the compressor. I added freon until the pressure came up. When the compressor turned on the low side pressure dropped abruptly. I added freon to bring the pressure up to about 45 psi.

[Nuge]

You can also put a jumper in the plug that goes to the pressure switch to get it running for filling purposes or to check compressor/clutch function.

[Old Scout]

The devil is in the details--you didnt mention in yr original post that you were attempting to add freon. Generally, there is enough pressure in the first can of freon you add to get the system up to pressure to let the compressor start. Still amazed you have an 03 with vansco--learn something about Alpines everyday!!!!