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AC problem

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by freeHUG, Jul 11, 2024.

  1. freeHUG

    freeHUG Junior Member

    Joined:
    Apr 12, 2013
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    Vehicle:
    2012 Prius
    Model:
    Two
    Hi everyone,

    my ac blowing hots air in hot summer outdoor temperature (like 115F), but when at moring or night time the outside temperature drop back around 90F then the ac be back to normal cold air.
    So I still don't know what happen going on?

    thanks for help
     
    #1 freeHUG, Jul 11, 2024
  2. rjparker

    rjparker Tu Humilde Sirviente

    Joined:
    Jun 6, 2008
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    Location:
    Texas Hill Country
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Typically it’s too little or too much refrigerant. These systems are critically charged variable capacity with txvs which can be overcharged or undercharged.

    Low charge means not enough liquid refrigerant to feed the txv at high load. Excessive refrigerant will trip high pressure switches and disable the compressor at high loads.
     
    #2 rjparker, Jul 11, 2024
    Last edited: Jul 11, 2024
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