Started this topic in newbies, but was advised to get the gas checked and restart here if no joy, so here we are again.
A/C man checked pressure initially and was OK at 6 bar, but I asked him to drop the lot out and recharge
Less quantity came out than was listed but allegedly some cars will work with less than full spec qty, others won't
He then dried the system out by pulling vacuum, before recharging system and having a fully gassed system
Started the car and only the fans started, A/C just blowing ambient air
Then we started the following checks
Located all the fuses and relays that had the snowflake symbol in the fuseboxes in the engine bay and checked all fuses, non blown, didn't see any A/C fuses in main panel
Still with engine off pulled each relay and using temp wires from battery proved each relay pulled in
Replaced all relays/fuses
Started car and checked for 12 v at compressor supply, no volts
Compressor clutch was free and compressor could be turned
Switched engine off and gave compressor wire 12 volts, the clutch came in
So everything points to a circuit fault between the button on the dash and the compressor.
There is a pressure switch in front of the radiator which detects A/C system pressure, that may be faulty
I could do with a circuit diagram and any wise words on how to procede, will linking the pressure switch test this bit of the circuit?
Anything else???
Could a relay be clicking and not closing etc, bit of a long shot I think
A/C man checked pressure initially and was OK at 6 bar, but I asked him to drop the lot out and recharge
Less quantity came out than was listed but allegedly some cars will work with less than full spec qty, others won't
He then dried the system out by pulling vacuum, before recharging system and having a fully gassed system
Started the car and only the fans started, A/C just blowing ambient air
Then we started the following checks
Located all the fuses and relays that had the snowflake symbol in the fuseboxes in the engine bay and checked all fuses, non blown, didn't see any A/C fuses in main panel
Still with engine off pulled each relay and using temp wires from battery proved each relay pulled in
Replaced all relays/fuses
Started car and checked for 12 v at compressor supply, no volts
Compressor clutch was free and compressor could be turned
Switched engine off and gave compressor wire 12 volts, the clutch came in
So everything points to a circuit fault between the button on the dash and the compressor.
There is a pressure switch in front of the radiator which detects A/C system pressure, that may be faulty
I could do with a circuit diagram and any wise words on how to procede, will linking the pressure switch test this bit of the circuit?
Anything else???
Could a relay be clicking and not closing etc, bit of a long shot I think