Compressor not running

[Charlied]

A few months ago had my factory A/C serviced and converted to 134. Service included new drier, new low pressure switch, adding Pag oil and fixing leak on schrader valve on compressor head, full evacuation recharge.A/C worked well.

Last week turned it on just to run it, nothing, compressor did not turn on. I checked fuses, fine. Can only assume the system is close to empty and that low pressure switch shut everything down. In the past when refrigerant low, compressor would cycle on/off.

Any way I can safely check if switch has failed or confirm system in fact empty.

Repairs as we all well know are expensive these days and 134 running about $5 an ounce.

Car is 74 Satellite Sebring Plus, 400 4 bbl.


Any thoughts? Thanks

 

[LowBikeMike]

Remove wiring from switch. Check with ohmmeter. No continuity means switch is open killing power to compressor

 

[Photon440]

A few months ago had my factory A/C serviced and converted to 134. Service included new drier, new low pressure switch, adding Pag oil and fixing leak on schrader valve on compressor head, full evacuation recharge.A/C worked well.

Last week turned it on just to run it, nothing, compressor did not turn on. I checked fuses, fine. Can only assume the system is close to empty and that low pressure switch shut everything down. In the past when refrigerant low, compressor would cycle on/off.

Any way I can safely check if switch has failed or confirm system in fact empty.

Repairs as we all well know are expensive these days and 134 running about $5 an ounce.

Car is 74 Satellite Sebring Plus, 400 4 bbl.


Any thoughts? Thanks

If it was worked on just a few months ago, I'd take the car back and tell them it stopped working and let them deal with it.

 

[F4R/T]

If you didn’t change your hoses to barrier type hoses get used to topping it off . Old hoses don’t play well with 134A. That being said all Orings should be serviced too. It does sound like you have a leak somewhere , look for oily residue and if not noticeable add a little charge and some UV dye then chase the leak with a black light.

 

[1 Wild R/T]

If you didn’t change your hoses to barrier type hoses get used to topping it off . Old hoses don’t play well with 134A. That being said all Orings should be serviced too. It does sound like you have a leak somewhere , look for oily residue and if not noticeable add a little charge and some UV dye then chase the leak with a black light.

This... Plus the fact the RV2 front seal doesn't have the best success rate with R134