2020 cascadia ac has to be reset by turning the truck off and on.

Discussion in 'Freightliner Forum' started by Tidyshark, May 29, 2022.

  1. Tidyshark

    Tidyshark Bobtail Member

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    May 29, 2022
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    Not exactly sure what the issue is/could be. Just started driving 2 months ago. The ac on full blast with the blue light on (ac on, I'm assuming) will dwindle to nothing over a course of about 4 hours and when I turn the truck off and back on, it will work fine again for the next 4 hours or so until it dwindles to nothing again.

    When I'm idling, it happens much faster and the outside temperature gauge will get pretty high (up to around 85°F so far) after 3 hours idling while the outdoor temp is only about 55.

    When there's nearly nothing coming out of the vents, the tiny bit of air coming out is ice cold and I hear the fan blowing as hard as it cab, but no air coming into the truck. Again, shut down and restart completely fixes the issue. No engine codes or anything like that. I can't seem to find anything where people are having a similar issue as me, but I figured it is maybe because I am not describing correctly. I'm not completely sure.

    So far, I've tried resetting the hvac door thing (the lights never started blinking, so im not sure what I did wrong there) and I checked the cabin air filter which looked brand new and no debris was stuck in it at all.
     
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  3. Sharky88

    Sharky88 Medium Load Member

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    Sep 25, 2013
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    It sounds like the ac is freezing g up. Press the ac button until it's green not blue it will automatically adjust the temp. Also do not keeping on recirculation allow outside air to enter
     
    armo Thanks this.
  4. Magoo1968

    Magoo1968 Heavy Load Member

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    Mar 18, 2021
    St Malo mb
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    Also check hvac vent tube under the hood to see if debris is stuck there . If moisture can’t drip away it freezes unit up .
     
  5. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    May 2, 2021
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    Probably a bit low on freon,or the cabin filter is pluggws.
     
  6. armo

    armo Light Load Member

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    Jun 16, 2022
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    +1 .
     
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