PDA

View Full Version : Aircon Issue


tuckertrucker
23rd August 2016, 05:14 PM
Hi All
I've had a look through past threads but couldn't find anything to help.

My airconditioning in my '92 GQ Safari (24volt electrics) doesnt seem to be working. It seems only to be the fan that isnt going. When I turn on the lights, the backlights of the aircon light up. And if I set the air feed to out side air when Im driving, air will flow through the vents and when this is happening the heat control works. But the fan wont go.
The fan and heater in the back work fine without fault.
I dont think its a fuse as Ive checked all the fuses in the driver kick panel and none have blown. Wondering if there are any other fuses somewhere else or if anyone has any other ideas.
Cheers, Dylan
mudski
23rd August 2016, 05:38 PM
Any gas in the a/c? If its low on gas to a certain point, the a/c wont kick in. I believe.
dom14
23rd August 2016, 06:05 PM
Any gas in the a/c? If its low on gas to a certain point, the a/c wont kick in. I believe.

According to his description, it's the blower fan that isn't working. I suspect a resistor issue, assuming he checked the fuse for the blower motor properly.
tuckertrucker
23rd August 2016, 07:18 PM
According to his description, it's the blower fan that isn't working. I suspect a resistor issue, assuming he checked the fuse for the blower motor properly.

Yeah there is heaps of gas. When you say checked the fuse corectly.. i pulled it out, the wire was still intact and i could get current across it. so stuck it back in
Yendor
23rd August 2016, 07:49 PM
If the front interior fan isn't working on any speed it could be a faulty interior fan motor or a faulty relay.

The interior fan relay should be the top relay beside the fuse box inside the vehicle try swapping it with the middle relay.
dom14
23rd August 2016, 08:33 PM
Yeah there is heaps of gas. When you say checked the fuse corectly.. i pulled it out, the wire was still intact and i could get current across it. so stuck it back in

I meant that you didn't get the fuse mixed up with another one. Sometime, with mods done to electrical wiring, fuse you're checking may not be the one for the blower fan. It has been my experience with my troll. Checking few other fuses to ensure they are what they are might be a good thing with older vehicles.
tuckertrucker
25th August 2016, 03:51 PM
I meant that you didn't get the fuse mixed up with another one. Sometime, with mods done to electrical wiring, fuse you're checking may not be the one for the blower fan. It has been my experience with my troll. Checking few other fuses to ensure they are what they are might be a good thing with older vehicles.

Yeah, all my fuse labels are in japanese so I went through them all
dom14
26th August 2016, 04:21 PM
Yeah, all my fuse labels are in japanese so I went through them all

Have you tried what Yendor suggested above?

If you did, then it may be worth pulling the blower fan unit out.
In, not so common cases crap can get into it from the top of the dash, and air inlet vent in the side of the blower fan unit, and possibly block the propeller and eventually cook the motor.
I've seen it as a common issue with Nissan Micra 1996 model, where the blower fan/motor unit cooked twice as a result of crap getting into it from the interior air intake opening, and once the resistor cooking itself(but still worked at the highest setting).
tuckertrucker
6th September 2016, 06:03 PM
Have you tried what Yendor suggested above?

If you did, then it may be worth pulling the blower fan unit out.
In, not so common cases crap can get into it from the top of the dash, and air inlet vent in the side of the blower fan unit, and possibly block the propeller and eventually cook the motor.
I've seen it as a common issue with Nissan Micra 1996 model, where the blower fan/motor unit cooked twice as a result of crap getting into it from the interior air intake opening, and once the resistor cooking itself(but still worked at the highest setting).

Sorry ive been in Fiji for the last two weeks. Ill check out that relay tomorrow and see if thats it. It just seems strange that all the lights behind the switched on the aircon dash will go, but when i put the multimeter on the terminals behind the fan switch in the dash there wasnt any power. If the relay blew, there would still be power here, I think. Ill check it though cause it seems to be the best option.
cheers
dom14
6th September 2016, 10:22 PM
Sorry ive been in Fiji for the last two weeks. Ill check out that relay tomorrow and see if thats it. It just seems strange that all the lights behind the switched on the aircon dash will go, but when i put the multimeter on the terminals behind the fan switch in the dash there wasnt any power. If the relay blew, there would still be power here, I think. Ill check it though cause it seems to be the best option.
cheers

How did you test the dashboard fan switch whether it gets power?
Where did you put the positive and negative terminals of the multimeter?
tuckertrucker
9th September 2016, 05:59 PM
I contacted the +ve in two different points in the circuit, 1. switch output to fan, 2. input to fan, and I attempted both arrangements with the multimeter grounding to eather the -ve on the switch or a metal earth (that other things are earthing to so I know it is actually and earth).
But no voltage at all.

I crossed the +ve a couple of times to other electronics that had power and got a strong 25v