Refill AC with R12, compressor always kick on

Discussion in 'The Big Chill' started by skd, Sep 30, 2019.

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  1. skd

    skd Member

    Hello,
    Im owner Riv 73 from Belarus, my cars restored slowly, few days ago AC system refilled with R12 freon, compressor kick on, but dont kick off, have freeze on low pressure tube, attached picture.
    Thermal limiter was broke, use some wire to jump contacts, but i dont think thats a reason always running compressor.
    Where is the problem solve search?
    Regards, Konstantine
     

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  2. philbquick

    philbquick Founders Club Member

    That's normal if it's a POA system. They don't cycle.
     
  3. gsx455-4ever

    gsx455-4ever Gold Level Contributor

    73 Riv would be a VIR , ( Valve In Receiver System ) They do not cycle . Is it Cold ?? The Thermal Limiter is just a fuse to protect the compressor . People were not smart enough to turn the AC off if it got low on Freon and started to blow warm air . To protect the compressor the factory used the Thermal Limiter
     
  4. skd

    skd Member

    Yes, it cold. All original. If Im right understand, 73 AC compressor does not cycles and freeze on low pressure tube its normal?
    Sorry for my English
     
  5. gsx455-4ever

    gsx455-4ever Gold Level Contributor

    It is not unusual to see frost on the AC tubes and lines . And yes that system does not cycle .
     
    skd likes this.
  6. skd

    skd Member

    Thank you very much!!!
     
  7. philbquick

    philbquick Founders Club Member

    BTW, a VIR system works on the same principle as a POA. The just cut cost by combining the expansion valve a POA valve into one unit.
     
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