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  1. #1
    Join Date
    Sep 2013
    Location
    england
    Posts
    2
    Rep Power
    0

    Daikin vrf with com's issue



    Hi guys.

    I've been called out recently to some Daikin vrf systems with com's fault "ue".

    There is a main centralised controller which is controlling everything.
    On the controller it is controlling 3 vrf systems.
    System 1 is running fine but the other 2 systems are not working.

    All indoors are showing on the I touch main controller but are not able to be turned on or so anything.

    Is checked com's between controller and outdoors and getting 16dc v on the com's.
    Getting 16dc v to the indoors
    But not getting anything on the multi link from one outdoor to the other.

    I've tried resetting everything but no joy.

    If anyone could help it would be appreciated

    Cheers
    Dean



  2. #2
    Join Date
    Oct 2012
    Location
    Russia
    Age
    42
    Posts
    392
    Rep Power
    18

    Re: Daikin vrf with com's issue

    Search dead MB in indoor unit.

  3. #3
    Join Date
    Oct 2007
    Location
    manchester
    Age
    50
    Posts
    5,639
    Rep Power
    45

    Re: Daikin vrf with com's issue

    centralised connects accross outdoor units

  4. #4
    Join Date
    Mar 2007
    Location
    manchester
    Age
    17
    Posts
    63
    Rep Power
    19

    Re: Daikin vrf with com's issue

    dead MB???

  5. #5
    Join Date
    Dec 2008
    Location
    Australia
    Age
    61
    Posts
    44
    Rep Power
    0

    Re: Daikin vrf with com's issue

    try Daikin Tech Support , they are very helpful in Australia. Don't know if they have the support in England that we get in Aust.

  6. #6
    Join Date
    Jan 2015
    Location
    ENGLAND
    Posts
    7
    Rep Power
    0

    Re: Daikin vrf with com's issue

    Try 01275 341030 Daikin uk support. Usually very helpful.

  7. #7
    Join Date
    Mar 2014
    Location
    England
    Posts
    32
    Rep Power
    0

    Re: Daikin vrf with com's issue

    Check the F1-F2 terminals labelled OUT on each master VRV system, if you have system 1 with no coms then the cable from central probably goes to this on the correct terminals, from these terminals follow the cable to the next system and then the next but remember if one system has two outdoor units only work on the masters

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