Hi guys... the other day I stopped getting cold air from my air con. Scanned the HVAC unit for codes with VCDS and it's clean. It will happily claim to switch into and out of ECON mode but the clutch on the compressor does not engage at all, I have watched under the bonnet whilst having someone press the ECON button on and off, and it doesn't engage at all. I used the Climatronic diagnostics stuff and all the time the voltage for the AC Compressor (Code 20) is 14v and the high-pressure switch status is always 1.
So my questions are...
High pressure switch at 1 - is that good or bad?
AC compressor code 20 at 14v - does that mean it's on or off?
Has my compressor clutch failed, as it doesn't seem to try and engage even with 14v, or would it normally engage at 0v?
Just trying to diagnose it a bit myself, because I know that if I take it to any garage around here their first step will be to re-gas the system and charge me lots for it!
Thanks in advance!