A/C Compressor not kicking on

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#11

04-07-2012, 11:37 AM

pettyfog

BF Veteran

Join Date: May 2011

Location: SW Central OH

Posts: 2,257

To check out the control signals, look at wire going into the 'clear / natural / no color' plug at the VCM {computer}

Pin 1 {Dark Grn/white stripe} should be ground if heater control and ACcum cycling sw and hi-press cutout allow and call for compressor

#12

04-08-2012, 02:02 PM

67dad

Starting Member

Join Date: Apr 2012

Posts: 2

Fixed...Thanks to all on thread!

Quote:

Originally Posted by Captain Hook

See post #2 for some preliminary tests. Also need to check the high pressure cut out switch on the rear of the compressor. It disables the clutch if pressure is too high, but it can fail and keep the clutch from engaging as well.

Capt. Hook: When rechecking everything per post #2, we found that bypassing the low pressure switch DID kick in the compressor (we must have had a bad jumper when we tried earlier). Freon added. Pressure switch works too after freon. Crossing our fingers the leak was very small.

Thanks for the help!

Happy Easter! He is Risen!