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  1. #1
    Join Date
    Jun 2008
    Location
    Iraq
    Age
    55
    Posts
    28
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    MC Quay (McEnergy AXN Chiller problem)

    My respectful colleagues,
    Hope all are good.
    I have air cooled McQuay chiller type McEnergy A 166.2 XN 134.
    the chiller shows the alarm " #1 EXV not closed during power OFF ".
    Then when go to unit setting system 1 expansion valve shows other message " EXV setting #1 system's waiting for valve open restart go a head ? N."
    If you please open the attached images with my thread.
    I changed the battery ( the battery was not good) and checked the EXV motor which is working fine.
    I checked the Carel's EXV driver. the LEDs are showing that " the valve open in case of lack of supply"
    ( LED open: flashing/ LED close: flashing / LED power: ON / LED alarm : flashing ).
    I need the Tech Password" to restart the EXV again.
    The password consist of 10 separate digits. (00000 00000).
    Hope someone will help and I'll be appreciated.
    Wish you all good day.

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