Ice on My Ductless Mini Split

Discussion in 'HVAC' started by Green8, Jul 20, 2018.

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  1. Jul 20, 2018 #1

    Green8

    Green8

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    Why does ice form in a ductless split AC? I have three wall-mounted a/c's running off one outside unit. Everything is working fine however. They still cool great. Any reason for concern?
     
  2. Jul 20, 2018 #2

    Gary

    Gary

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    Not sure, but when that happens with a car A/C, it usually means the freon level is low.
     
  3. Jul 25, 2018 #3

    Green8

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    Thanks Gary, a friend of mine is having this problem.
     
  4. Jul 25, 2018 #4

    dadathepanda

    dadathepanda

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    Try cleaning the unit...dust may also be the culprit
     
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  5. Jul 26, 2018 #5

    joecaption

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    Where's the ice forming, inside, outside.
     
  6. Jul 30, 2018 #6

    Green8

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    Coils, outdoor unit.
     
  7. Jul 31, 2018 #7

    WyrTwister

    WyrTwister

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    Is there a chance the controls are accidentally stuck on something other than cool ?

    Not unusual for this to happen in winter , when in heat pump mode . Ours have a dry mode , but have never used it .

    Typically , low refrigerant will cause icing on the indoor coil , when running A/C mode . Not on the outdoor unit .

    I would power it down , wait a few minutes , power it up and see if it persists .

    I do not know id a " stuck " reversing valve would cause it ?

    Best of luck to you , :)
    Wyr
    God bless
     

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