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  1. #1
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    correct me if i am wrong..



    but we have a U7 flashing on a MHI VRF. Is this something to do with the addressing as I 'fink' U7 means Unit 7 and the flashing means it's lost comms with the outdoor or something??

    TIA



  2. #2
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    Re: correct me if i am wrong..

    Not sure about the U7 code? But look on page 40 and it mentions I/U ?? (Indoor Unit Number)

    http://www.3dair.co.uk/DOWNLOADS_may...20&%20KXR4.pdf
    Last edited by frank; 15-04-2014 at 02:02 PM.

  3. #3
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    Re: correct me if i am wrong..

    u-07 is indoor unit no 7 fault, check limit switch on the filter door, all fault codes are e numbers, had a triple system alarming on e01, checked outdoor unit, 240v on cond terminals ok turned out the some lanky git switched off 2 indoor spurs- units 12 ft up!!!- reset outdoor power and alarm cleared

    press check button on controller, push down to highlight error data, select number 7 unit to see the fault

  4. #4
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    Re: correct me if i am wrong..


  5. #5
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    Re: correct me if i am wrong..

    wireless remote. the run light flashes 3 times...

  6. #6
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    Re: correct me if i am wrong..

    compressor lock

  7. #7
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    Re: correct me if i am wrong..

    Quote Originally Posted by install monkey View Post
    compressor lock
    all the other indoors run no problem and heat/cool ok..

  8. #8
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    Re: correct me if i am wrong..

    The only reference to 3x red light flashes I could find is on page 14 of the manual (link in post #2)

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