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  1. #1
    Join Date
    Jan 2017
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    United Kingdom
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    City multi fault



    Hello

    I arrived on site to a newly installed city multi system with 1 x ceiling unit not cooling/heating the unit is working just no cooling or heating is happening.

    Ive wound the lev head off and to no avail.

    The addreses are all correct and the controller par31-maa sees the unit and can changed loavers and shut down the unit.

    All other units work correctly

    If anyone has any advice I would be greatful

    I do need to test the solenoid valve plug but the bc box is in such a terrible place you cannot get to the inside of the box.
    Last edited by Airconessex; 23-01-2017 at 12:52 PM.



  2. #2
    Join Date
    Mar 2001
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    ireland
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    Re: City multi fault

    Is the unit piped to correct outlet on BC box? Sounds like a piping issue
    Mostly found in the southern part of this green and pleasant land.

  3. #3
    Join Date
    Mar 2006
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    Lancashire
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    Re: City multi fault

    Check 'A & C' solenoids are energized from the BC box PCB in cooling mode and 'B' is energized in heating mode.

    If you're getting the above, then I'd start looking at the port address setting, it's probably something as simple as incorrect/duplicated ports.
    The difference between genius and stupidity is that genius has its limits.

    Marc

  4. #4
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    Jan 2017
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    Re: City multi fault

    Quote Originally Posted by Airconessex View Post
    Hello

    I arrived on site to a newly installed city multi Prime English system with 1 x ceiling unit not cooling/heating the unit is working just no cooling or heating is happening.

    Ive wound the lev head off and to no avail.

    The addreses are all correct and the controller par31-maa sees the unit and can changed loavers and shut down the unit.

    All other units work correctly

    If anyone has any advice I would be greatful

    I do need to test the solenoid valve plug but the bc box is in such a terrible place you cannot get to the inside of the box.
    thanks for sharing
    Last edited by alicechan11; 22-03-2017 at 06:43 AM.

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