a/c not blowing cold air

[rbjtech]

Hi all,

So my a/c has not been working for a while - so I'm trying to fathom out why it is not producing ANY cold air.

I have the Auto Air/Con HVAC control.

If I press the A/C button the following happens -

- AC Compressor clutch engages and I can see it spinning the compressor.
- Aux/Electric fan does not come on.
- Idle rises slightly.

High/Low AC pipes appear to get 'warm' but this may simply be heat soak from the engine.

The system has been recently pressure checked, fully purged and re-charged professionally with an automated machine - apparently the original pressure was very close to what it should be - so I am assuming there are no leaks.

I can turn on the Aux fan with the Foxwell and it spins at what I assume is Max speed. I can also make the fan work at Max by unplugging the High side a/c pressure sensor. This reads as 5v when unplugged, 1.7v when the a/c is on.

My understanding is the Aux fan is not essential for the a/c to produce 'some' cooling effect but I have also run the car at cruising speed with the a/c on - but it does not make any difference, so the fan not turning on is not my primary concern atm.

As the compressor is working (and not turning off) I believe this means all systems are 'go' but no cold air.

Should the pipes entering the Evaporator (through the firewall) be hot on entry (liquid) and cold on exit (gas) ?

Any thoughts please on what to look at next ? Thanks.

edit - Updating my own thread ...

So it looks like I have a Carlsonic Kansei CSV717

So I guess the next thing to check is if the compressor is working - it's engaging just fine, but can it engage but still not pump effectively ?