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  1. #1
    Join Date
    Jul 2010
    Location
    New York City
    Posts
    128

    BACKUP PACKAGE AC UNIT FOR SERVER ROOM GOING OFF BY MORNING

    BACKUP PACKAGE AC UNIT FOR SERVER ROOM GOING OFF BY MORNING



    IM WORKING ON A SERVER ROOM AC SYSTEM WHICH HAS A CONTROL BOX WITH PRIMARY AND BACK UP SWITCH AUTOMATICALLY SWITCHES TO BACKUP WHEN PRIMARY GOES DOWN SO THE PRIMARY IS DOWN BAD COMPRESSOR WAITING FOR NEW ONE I HAVE UNIT AIRHANDLER AND CONDENSOR ITYS A SPLIT SYSTEM AIR COOLED SHUT OFF AT DISCONECT SWITCHED OVER TO SECONDARY SYSTEM PACKAGE AIRCOOLED UNIT RUNS GOOD PROBLEM IS IT WILL NOT SHUT OFF RUNS CONTINUEOUSLY HAS ACCUTEMP SENSOR T-STATS ALL CHECKED OUT WORKS ALL DAY NO PROBLEMS CUSTOMER SAYS THEY FIND ROOM HOT EVEY MORNING PRESS BUTTON TO RESTET BACK TO PRIMERY SYSTEM THEN BACK TO SECONDARY AND IT WORKS ALL DAY UNTIL IT GOES OFF IN THE NIGHT AGAIN OUT OF IDEAS THE ONLY THING I THINK IS HAPPENING IS THE UNIT IS CONTINUEOUSLY RUNNING AND TRIPPING THE INTERNAL OVERLOADS ANY THOUGHTS WILL BE BACK THERE IN THE AM NEED SOME IDEAS

  2. #2
    Join Date
    Dec 2006
    Location
    What? Who? Where?
    Posts
    1,701
    Stop yelling!

    kontrol out
    "Open is as open does." - Forrest Gump
    "Can't we all just get a Lon?" - Garry Jack
    "BACnet: integration or interrogation?" - The Janitor
    "Open protocols? You can't handle open protocols!" - Nathan R. Jessup
    “What’s that? Aaa… open protocols? Don’t talk about…. open protocols? Are you kidding me? Open protocols? I just hope we can hardwire an interface!” - Jim Mora http://www.youtube.com/watch?v=U7fjDS0jKiE

  3. #3
    Join Date
    Jan 2002
    Location
    Fort Worth\Dallas, Texas
    Posts
    1,701
    Does the unit have low ambient controls?
    Go Rangers!

  4. #4
    Join Date
    Jul 2010
    Location
    New York City
    Posts
    128
    Quote Originally Posted by lwarren View Post
    Does the unit have low ambient controls?
    Yes has a damper controlled by head pressure piston working can it be going off on low pressure due too non stop running

  5. #5
    Join Date
    Jan 2002
    Location
    Fort Worth\Dallas, Texas
    Posts
    1,701
    That was just guess since it is only doing it at night. Would need a lot more info to know for sure.

  6. #6
    Join Date
    Jul 2010
    Location
    New York City
    Posts
    128
    cool went there this morning unit still running room 65 temp unit didnt shut off had to bypass control switch over box add t-stat back up unit turning on and off fine found that though the control box when i reset unit contactors were chattering only getting 12 volts pushed in contact and all pulled in now showing 24 volts did this over and over once i switched to t-stat from control box no more voltage drop so for now this is how its going to work think i solved the problem need to tear into that switch over box and go through all the wires for possible short

  7. #7
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,888
    Please use some punctuation and capitalization so we can understand you. I won't struggle to read a post written this way. I just go on to something else.

  8. #8
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    What you know, understand phone speak!?

  9. #9
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,888
    Quote Originally Posted by OldSchoolMech View Post
    What you know, understand phone speak!?
    I understand phone speak just fine. You used capitalization and punctuation, though I suspect you deliberately misspelled "no." I don't understand someone who wants me to help him composing their post in a way that makes me struggle to see what they are saying. Why should I spend time sorting through gibberish? I hope he doesn't write contracts that way.

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