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Can The Pressure Switch Cause My Compressor To Kick On Off

Posted in Air Conditioning | Asked on Jan 30, 2012
Below is the question about Can The Pressure Switch Cause My Compressor To Kick On Off,

I have a 2002 nissan maxima,can the pressure switch cause the compressor to kick on and off? All i can tell about the situation is sometime when the coolant fans come on ,sometime the compressor will kick on then back off.One of my fans run continuously,they both come on in high speed.When i checked the ac line to see if it had freon, the only thing came out was air.The pressure is reading about 110psi. Do my coolant fans have anything to do with my ac problem? Also when i turn my ac on the compressor will kick on then shut right back off

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There are 4 Answers for "Can The Pressure Switch Cause My Compressor To Kick On Off"

  1. Mr. Knowitall says:

    Static pressure should be around 136 psi
    You’re low on freon.

    You should see an A/C specialist.

  2. Michael S says:

    Wow, really, “When i checked the ac line to see if it had freon, the only thing came out was air.”

    Better get that looked at, the AC doesn’t work on air, in fact, there shouldn’t be any air in the AC system.
    The compressor is supposed to cycle on and off.
    One of your fans SHOULD stay on when the AC is on.
    The other fan should come on when the engine temperature increases.

    Lastly, you shouldn’t be messing with the AC because you don’t know what you are doing.

  3. Alex E says:

    110 lbs of air in the a/c line supposedly with freon?

    Should be 130 static pressure of r 134A in the refrigerant system as you have no freon in there. Air should not be in there either.

    You need professional diagnostics from a qualified A/C tech.

    Sorry to have to say but your communication efforts show a situation that could possibly get you seriously hurt.

    To answer the question yes. The low and the high side pressure switches will activate and de activate the compressor. They are designed for that purpose when the pressures in the refrigerant system fall below or rise above safe operating levels.

  4. Forgivealot says:

    Don’t mess with ac if you don’t know what you are doing. sounds like ur ac is low on charge. ac lines have allot of pressure in them. there isn’t any air in a ac system.