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  1. #1
    Join Date
    May 2009
    Location
    Songtan South Korea
    Posts
    6

    Question Liebert Model CM60AF-15-Y-OHP

    Have a 10 ton HVAC unit supporting a computer room on and military base in South Korea. Alarms are "Loss of air flow" and "Overtemperture" Sure overtemperature will ocur with no air flow.-- Filters are clean, blower drive belts and wheels are in good shape-- I think the problem is with the small pc board with the single sensor on it. "Senser Board-- Part number 0617222. Here is the problem-- this unit was made in Australia and the factory closed and went to China. Assuming this is the problem, Where can I get a new board?

  2. #2
    Join Date
    Jul 2010
    Location
    Andalucia
    Posts
    3,223
    Quote Originally Posted by W Ahlberg View Post
    Have a 10 ton HVAC unit supporting a computer room on and military base in South Korea. Alarms are "Loss of air flow" and "Overtemperture" Sure overtemperature will ocur with no air flow.-- Filters are clean, blower drive belts and wheels are in good shape-- I think the problem is with the small pc board with the single sensor on it. "Senser Board-- Part number 0617222. Here is the problem-- this unit was made in Australia and the factory closed and went to China. Assuming this is the problem, Where can I get a new board?
    This site cannot give that information to a diy'er and if you are a pro you need to get 15 posts to apply. If you are not a pro it would be best to get a service call.
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  3. #3
    Join Date
    Jun 2001
    Location
    Greeneville, Tennessee
    Posts
    344
    Sounds like dirty air filters!
    The alarm looks for differential across the return, which incorporates the filters and indoor fan suction.
    Dirty filters would result in "Loss of Cooling" which would result giving over temperature alarm.

  4. #4
    Join Date
    Dec 2006
    Location
    Middle Tennessee
    Posts
    11,347

    *

    i would not blame the board right away

    you probably have a faulty sail switch

    double check it for open/close/stuck circuit




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