AC question
Racer
Joined: Dec 2004
Posts: 480
Likes: 12
From: St. Louis Mo.
I would recommend checking the electrical side of things. Check the fuses, relays and wiring connectors. A test light will come in handy for determining if there is power to the compressor, safeties and such.
Drifting
Joined: Jun 2013
Posts: 1,955
Likes: 340
From: Shell Point (Crawfordville) Florida
That's a static pressure, reflecting the equalized system pressure. To measure the low side pressure where you have it hooked up, you need the compressor running. What HVAC system do you have, the manual or electronic?
Have you interrogated the codes? You may be low on Freon (09 code) and if so, the compressor won't run, and you have to bypass the low pressure switch to activate the compressor because you can't add Freon to the system unless it's running. To measure anything of significance, you need the compressor running.
Have you interrogated the codes? You may be low on Freon (09 code) and if so, the compressor won't run, and you have to bypass the low pressure switch to activate the compressor because you can't add Freon to the system unless it's running. To measure anything of significance, you need the compressor running.
