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  1. #1
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    Mitsubishi Heavy Cassette



    Need help with the following;

    green led on wired controller switches to red
    Controller displays:

    E33
    PROTECT STOP
    I/U No 00

    Any pointers please?
    thank you



  2. #2
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    Re: Mitsubishi Heavy Cassette


  3. #3
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    Re: Mitsubishi Heavy Cassette

    Sounds like it could be the compressor Abe.

    Check winding resistances to earth with a Megger.

    Is it an old unit?

  4. #4
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    Re: Mitsubishi Heavy Cassette

    Quote Originally Posted by frank View Post
    Sounds like it could be the compressor Abe.

    Check winding resistances to earth with a Megger.

    Is it an old unit?
    Its about three years old Frank, if I remember it was one of the last R22 units.

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