Hi can anyone advice me on my air con blowing hot all time

 

The first thing to do is get the system tested to see if there is any leaks. If no leaks are detected then the correct amount of refrigerant with oil can then be introduced into the system.

Should you still have the problem after refilling then the next thing on the list will be the DCCV as it’s probably stuck.

hi

its a common fault on S-types, its usually either the DCCV (dual coolant control valve) or climate module or combination of both

when the dccv fails, it regular takes the climate module out as well

I'd start with the dccv, get a bosch unit, cheap ones dont last long, climate modules can be repaired, its a black unit above the glove box, if you take it apart, theres usually blown tracks, which can be linked with some wire and solder

also check the dccv connector, if they get water in, you get corrosion in there and sometimes they melt, taking the module out

when the climate module fails the dccv fail to open, always flowing water, hence why you always get hot air, no matter how good the ac is, it wont cool a heater stuck on hot

cheers

Joe

16 hours ago, JOE-DOT-COM said:

hi

its a common fault on S-types, its usually either the DCCV (dual coolant control valve) or climate module or combination of both

when the dccv fails, it regular takes the climate module out as well

I'd start with the dccv, get a bosch unit, cheap ones dont last long, climate modules can be repaired, its a black unit above the glove box, if you take it apart, theres usually blown tracks, which can be linked with some wire and solder

also check the dccv connector, if they get water in, you get corrosion in there and sometimes they melt, taking the module out

when the climate module fails the dccv fail to open, always flowing water, hence why you always get hot air, no matter how good the ac is, it wont cool a heater stuck on hot

cheers

Joe

Thanks Joe very helpfull

Mine was doing that, a re-gas fixed it!