Air Conn problem

Hi,

I have a 2006, 2.5TD Ranger and am having problems with the air conn.

When I press the airconn button the light is coming on, but no cold air.

I've checked the gas pressure and its fine. the fuse is also fine. Checked the +12v connection into the compressor clutch and no voltage.

I applied +12v directly to the clutch an I can hear the clutch engaging.

Any ideas?

Many thanks
Gregor (Scotland)