2014 RRS Air con

[Audis5b9]

My mums air con has stopped getting cold. It still blows hot ok.

Can anyone recommend a way to diagnose the fault before letting the local garage have a go?

2014 Range Rover Sport

Thanks in advance.

[camel_landy]

Air-con systems don't like being left idle for extended periods, so just get it re-gassed and see what happens.

M