A/C Compressor doesn't cycle...

Elbow Greese · Jul 5th, 2004, 11:05 AM

Has this happened to anyone before?
AC worked great, until the compressor blew off excess pressure because it didn't cycle on/off.

Gotta get it recharged AGAIN (It's been converted to r-134a)
Any thoughts or tricks to this?
Thanks!!!
Todd

Gsolo · Jul 6th, 2004, 12:07 AM

Quote:

Originally Posted by Elbow Greese

Has this happened to anyone before?
AC worked great, until the compressor blew off excess pressure because it didn't cycle on/off.

Gotta get it recharged AGAIN (It's been converted to r-134a)
Any thoughts or tricks to this?
Thanks!!!
Todd

i am in no way an expert on a/c...but sounds like some kind of bad switch or relay maybe?

Elbow Greese · Jul 6th, 2004, 09:33 AM

That's my thought too.
Hoping someone has run into this before that can tell me "try this..."
Oh well.
I guess that's what diagrams, multimeters, and eventually mechanics (I hope not) are for

Todd

Gsolo · Jul 6th, 2004, 12:32 PM

Quote:

Originally Posted by Elbow Greese

That's my thought too.
Hoping someone has run into this before that can tell me "try this..."
Oh well.
I guess that's what diagrams, multimeters, and eventually mechanics (I hope not) are for

Todd

Good luck

astreamk1 · Jul 6th, 2004, 12:43 PM

I don't have a schematic to verify it for you, but I know there is a low pressure switch that keeps the compressor from kicking on when your freon charge is too low, likewise I believe there is a high pressure switch that tells it to kick off when it is not needed. Hopefully you have a FSM to verify this, I am sure someone here does.

Elbow Greese · Jul 6th, 2004, 10:44 PM

Ya, I've got an FSM.
Glad I do to.
I think it may be the 2 way pressure switch located on the dryer possibly not telling the compressor to shut off.
Of course, then it builds too much pressure and it blows off and lets some refridgerant go.
Thanks for the ideas.
Todd