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  1. #1
    Join Date
    Jun 2005
    Location
    Rhode Island
    Posts
    3
    I have a YPAL090H, 90 Ton RTU. During warmer days, but not limited to them, I receive daily system safety lockout faults and shuts down the compressors stages.

    Please, can someone explain what safety lockout faults that are tripping the unit off and why.

    I know that there needs to be 3 trips for this to occur. Thank you in advance.

    Eric

  2. #2
    Join Date
    Apr 2005
    Location
    md
    Posts
    79

    Talking

    could you give more detail this unit has amicro panel or does it have to be acessed thru ahandheld programmer is it airside related?

  3. #3
    Join Date
    Jun 2005
    Location
    Rhode Island
    Posts
    3
    thank you heaviwall:

    It has a micro panel at the unit, i'm not sure what airside related is.

    If it is airflow, i am receiving from both OA & RA dampers.

    Is there something that I should look at at the micro panel?

    Thanks again.

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