More Aircon Problems

[carday]

Hi Guys

2 years ago I had the compressor replaced (£800+VAT) as the original one developed a knocking noise which gradually got unbearable, everything worked fine until the alternator began overcharging and finally gave up the ghost causing problems with the aircon, the climate control unit (£775 +vat)was not powering the compressor and was deemed by Mr T to have been damaged due to the fault with the alternator. I decided that the cost was too much to bear at that time so left it for a while, I replaced the climate control unit this summer but the compressor does not work now, found that out today when I had the aircon re-gassed. Is there any fuses or relays that are not easily accessible that may have blown causing the compressor not to work.

[Mooly]

So was the original control unit ever faulty ?

The compressor has an electromagnetic clutch to engage it. You need to confirm that the wire feeding this is being powered when you switch the AC on. There almost certainly is a fuse somewhere... whether it feeds just that I couldn't say. Overvoltage could burn out the winding on the clutch... so you need to check this before going any further.