kroenen2

Hi, I have problem with my A/C. When I turn it on, front fan starts up, compressor too (I see the clutch starts rotating and feel a power load on motor) ...but the air it blows in cab is not cold at all ! It's like A/C is off.
What could by a problem?
The system is recently filled and pressurized by a legitim company, pressure switch is OK.

Thanks

Colin42

take it back, they screwed something up?

kroenen2

It didn't work before as well, they just refilled and pressurized thinking the problem is caused by low pressure.

ezone

Compressor clutch engages and spins?

Need to know a lot more about system operating pressures and conditions. Got a gauge set?

Just had an exchange with another member about an AC problem (LINK: https://www.civicforums.com/forums/3...need-help.html).....may or may not be the same as your problem, but if you have the necessary equipment it can probably be figured out

kroenen2

Yes, the clutch spins.
I have no gauges like this, I can't measure it. I don't know car mechanics well. I just tought I could fix it myself, but it doesn' look rosy. What I know is the high pressure pipe should be cold when compressor's running, but it's not cold.
It seems I have to go to mechanic with that.

Is it possible a sensor (pressure, temperature) is broken? But even the compressor wouldn't start then, would it?

ezone

Incorrect. The high side should be searing hot.

You might be able to, but you're probably gonna need some specialized equipment and a crash course in how MVAC works and learn how to diagnose problems with it.


http://home.howstuffworks.com/ac.htm

kroenen2

Yes, my mistake, thanks, I wrote it wrong, I mean Low pressure - very low ..and the high pressure is hot. Physics. That i understand. But thats all

Thanks for info in the link...