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  1. #1
    Join Date
    Jul 2010
    Location
    Mombasa
    Age
    57
    Posts
    52
    Rep Power
    14

    Fujitsu V-II System Indoor Abnormal function No error indicated



    Hi All

    Have a situation here whereby one of the indoor units seems to close liquid valve off after attaining required temperature and does not open again unless unit is switched off and switched on again. This does not happen always but most times. No error is indicated by unit, have replaced the temperature sensor and liquid line sensor and still problem persists.

    Any ideas will be appreciated

    Thanks in advance.



  2. #2
    Join Date
    Apr 2008
    Location
    Southampton, England
    Age
    49
    Posts
    1,044
    Rep Power
    35

    Re: Fujitsu V-II System Indoor Abnormal function No error indicated

    Is addressing correct? Might not make a difference but have seen this cause odd errors.
    Can you swap controller PCB's? Possible intermittent fault with coil head?

    Unit has 2 pipe probes - coil in and coil out. Are resistances correct and 5V to probes?


    Cheers, Andy.
    Last edited by Tayters; 27-04-2013 at 11:54 PM. Reason: Thought of more stuff.
    Health and safety first..........unless I'm in a hurry.

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