Some electrics solved on GQ

Hi dad,
Seems that trip of yours must have been damn rough. Sorry to hear of the niggling problems your encountering. Id'm pretty sure the corrogations caused most of your problems too. Just as well you did it in a GQ mate as i wasnt gonna come rescue you.....well....maybe i was !

Welcome back Willem.

Willem,
The airconditioner fault may actually be a loss of gas.
Most refrigeration systems have a low pressure switch in the gas stream. If they lose the charge completly they'll refuse to run.

Geoff.

Willem
One way to see if the AC has lost its gas is to inspect all the joints on the hoses and condenser (the one in front of the radiator) and evaporator (the one in the cab) for signs of oil, as the gas comes out it carries some of the oil in the system out with it. If there are signs of oil you will need to get it repaired by somebody authorized to work on AC systems. If no sign of a leak keep looking for electrical faults.
Stew

Willem
Aircond could be evap core leak, check where water drain goes through firewall if leaking evap may have oily look around pipe. Sometimes evap cores leak under expandtion/contraction and do not show oil leak. Some units have dye in system so it shows up under ultra violet light. if low gas low pressure switch would have cut power to compresser. unplug wire from reciver drier pressure switch and join with jumper wire to see if compresser cuts in. If clicks in low gas.
Cheers
Charlie

lets not get carried away...does cluch on compressor engage? if not bridge out low pressure switch ..if it has one, but only temporarily and at same time check sight glass for bubbles, does it go clear or remain bubbles?....if bridgeing out lp switch engages clutch then system is probably low on gas. if bridging anythig out keep the tie short matbe 2-3 mins at most.

also lots of other reasons...such as tx valve shutdown!...which will simulate a low pressure suction fault.

fist things first Willem...check if clutch engages and clutch ok?
ring me am wed till 11am as i am going pistol club arvo
0883656655

Willem, I had problems with the compressor in mine, although my problem was that it would not stop. Had a short in the loom between the pressure switch and the relay (under the cover on RHS wheel arch next to battery). Ended up running a new wire to bypass the loom. No prob's after that. If it isn't the pressure switch holding it out (indicating loss of gas), trace the circuit and find where the voltage ceases - might be something as simple as a crook relay.
Cheers
Gerry