R34 Gtt aircon not turning on

[MRH]

Hi all. I have a 98 r34 gtt. The aircon is not turning on at all. The buttons seems to be not responding. Previously there was a light on the button but still not working, and now the light has gone as well and not turning on. 

 

Any suggestions ? 

 

Cheers

[GTSBoy]

There's a million things that could be wrong.  Start by assessing whether there is even power to the back of the air-con computer.  Progress to seeing if there is enough gas in the system to satisfy the pressure switch.  You will almost certainly need to take it to an air-con mechanic at that point.

[MRH]

Thanks for the reply. 

So if there is no gas , the aircon won’t start at all ? I thought it would start but just blow hot air. 

Ps. I’m not good with cars, how do I check if there is enough gas ?

[Jordy32]

You will need a air-con mechanic to hook up their gauges to your AC lines to check that.

Check the controller in the dash is getting power, if at all possible swap it out for a known working module and see if that fixes the issue. If the fans don't turn on at all I would lean toward it being an electrical/control module issue.

[GTSBoy]

Yuh, the refrigerant pressure switch will prevent the compressor from pulling in to prevent you operating an empty compressor.

Other things that can stop the air con include that even the fan circuit could be dead (fuse maybe) and if the fan won't run then you don't get a permissive to run the compressor (so you don't ice up the evaporator). There's a bunch of things.

If you aren't good with cars, check the fuses, follow the advice above, then take it to an air-con guy if you can't see something simple holding it out.

[MRH]

Oh ok cheers. 

 

I might start with the fuse since there is no light on the buttons. 

 

Is the air con fuse under the bonnet or somewhere else for the r34?

[KiwiRS4T]

Have a look. The fuses next to the battery are labelled.

In cabin fuse box

https://www.google.co.nz/search?q=r34+gtt+fuse+box+diagram&tbm=isch&source=iu&ictx=1&fir=SK4XRzA6dJQaRM%3A%2CWat5HFNEw-6xHM%2C_&usg=__pb-EO6G_RwekDVQ0PZelV2fdZro%3D&sa=X&ved=0ahUKEwjb3qP32rHaAhUKW7wKHSl1BJ0Q9QEIKzAA&biw=1920&bih=966#imgrc=SK4XRzA6dJQaRM: