Air conditioning issue

[JAK68]

I bought a superb a couple of months ago but unfortunately the air conditioning does not work, it lights up  on the button but nothing happens. The gas has been refilled but was not needed anyway, also the fuse has been checked.

 

What would be the next thing to check, could it be a relay if yes where is it located?

 

Thks

[KenONeill]

35 minutes ago, JAK68 said:

What would be the next thing to check,

Fault codes in the A/C module.

[J.R.]

Agreed but where for instance the mudulating valve is not actuating no fault code will appear.

 

There is a measuring block called "Compressor shut down codes" which will reveal most reasons for the aircon not cooling.

 

If the system is showing no fault codes or shut down codes and the aircon commanded with a compressor load and modulating valve current, (both of which are ficticious and misleading as if there is no cooling there will be no load or current, its just theoretical values) then the problem will be either a stuck modulating valve or the compressor hub shear plate broken (or stripped splines in the hub) which can be seen visually.

Edited 26 May, 2023 by J.R.

[JAK68]

I managed to get hold of a handheld OBDII reader and found the problem under the Auto HVAC tab shown in the attached photo, does anyone know what that means? Thks