AC problem, no power to AC compressor

Discussion in 'Western Star Forum' started by 04 LowMax, Jul 7, 2014.

  1. GingerBaby

    GingerBaby Bobtail Member

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    Jun 4, 2019
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    Hi,
    What do u do if theres no power to the plug itself? I.e. the paperclip trick wont work and test light does not come on
     
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  3. GingerBaby

    GingerBaby Bobtail Member

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    Jun 4, 2019
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    What do you do when you get no power to the plug itself. As in I put a test light to it and no cigar... I also tried the paperclip truck still nothing.
     
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  5. blacklabel

    blacklabel Heavy Load Member

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    Nov 6, 2011
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    If this is the case @snowwy am I low on Freon? It kicked on with the paperclip. It was ice cold then guy tore front structure down and it has not been as cold since then quit today... Suggestions?
     

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  6. snowwy

    snowwy Road Train Member

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    Jul 6, 2009
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    Put gauges on it and check pressures.

    I'm talking actual gauges and not that cheap can crap.

    It could be low on freon. Or too much.

    Or some other problem if the pressures don't read right.

    Expansion valve or compressor. For instance.

    If a paper clip kicks it on. It's either a bad switch or not enough freon. It needs at least 50 psi to kick on but that's not enough to blow cold.

    Always want to check pressure first. Before diagnosing electrical. Using a paper clip could blow the compressor if there's nothing in the system.

    I see a lot of posts trying to diagnose electrical with no clue on freon level. Some will say it's fully charged when it fact. They don't have enough or have too much.

    Some will buy a 12 oz. Can and throw the whole thing in. And now they're 10 oz. OVERcharged.
     
    Last edited: Sep 3, 2020
    Dino soar, AModelCat and blacklabel Thank this.
  7. blacklabel

    blacklabel Heavy Load Member

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    I took it back out bc I was worried about burning up the compressor.

    Thanks for the reply. I was just trying to get a general direction before I started chasing.
     
    snowwy Thanks this.
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