I had my A/C pressure tested and regassed recently, as it wasn't very warm there seemed to be little effect, however, one day when it was parked in bright sunlight and the outside temp was showing 29C on the dash ( sensor is I think behind the bumper so not much air movement there). It took a few miles to get the inside down to a comfortable temp but it doesn't seem cool enough, I checked in case there were other systems sharing fuses at different points but F12 being the supply fuse is shared with other systems which are working ok. Then I found on You Tube that the thermostat housing has a temperature sensor and that if it has a fault it can switch the A/C off, some say to change the housing and a short wiring loom, others maybe just change the sensor. It looks to be a bit of a faff to get at the housing and sensor, does anyone have any experience of trouble shooting on the A/C? It would seem to be a case of sensor, it's wiring or pressure loss on the system, if I switch the A/C on using the button it seems to give a blast of cold then not but I could be kidding myself! Set the temp and it will turn up the air to change the temperature so control is trying to achieve settings, next step is to recheck the pressure and remove the sensor, I'm unsure about the Thermostat housing change as if it was working at some point it may just be that due to lack of use and gas (it was empty) then it needs to get some use, so I'm currently using it and changing the temp setting in hope that it will kick in. Otherwise, leak check as it was filled with a UV dye and pressure test or a fault code check?