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APC Smart-UPS 1100 Not working flashing Green and Yellow LED'd

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    APC Smart-UPS 1100 Not working flashing Green and Yellow LED'd

    Have APC - Smart UPS 1100
    1. Replaced Caps.
    2. New Batteries

    Issue
    Does not return to AC ONLINE
    after losing AC - and Mains is restored

    Switches to Battery Fine -- Running on Battery fine
    As a test , I can unplug the Power Cord to the Unit
    (Just say 5 seconds) Short period of time.

    When AC is restored
    It Shuts down
    Flashing the Green ONLINE AC LED
    and Flashing ON Battery LED

    Users manual only says that the 2 flashing LED indicates
    there is an internal Problem.

    Has anyone else had this problem and Fixed it ?
    Does anyone know what might cause this ?
    and How I might repair the problem.

    Thanks, band

    #2
    Re: APC Smart-UPS 1100 Not working flashing Green and Yellow LED'd

    maybe a faulty relay?

    Comment


      #3
      Re: APC Smart-UPS 1100 Not working flashing Green and Yellow LED'd

      Hello Capleaker,
      Thank you for your Reply and pointing me
      in the right Direction.


      I unsoldered the 5 relays,
      It Appears that 1 of the Relays is sticky.
      It does not release immediately.

      I have ordered replacement relays.
      Hope this will repair it.

      I also found thru google search that
      When online and on battery flash simultaneously, this indicates an AVR relay fault

      Comment


        #4
        Re: APC Smart-UPS 1100 Not working flashing Green and Yellow LED'd

        yes, it is usually the AVR relay. Just a little while ago, I had to change some caps in one of my APC SMT units too. Let us know how you did with the repair. Maybe even upload a pic or two.

        Comment


          #5
          Re: APC Smart-UPS 1100 Not working flashing Green and Yellow LED'd

          I replaced the 5 Relays on the Smart UPS 1100.
          No longer does the UPS Flash Both Lights. It now:
          Has a different problem.

          Now I have a different problem:
          1. Initially it goes online
          2. Performs a self test.
          3. Then goes offline to "On Battery" even though It is still plugged in.
          4. Will not go back to OnLine it appears that it does not know it
          is plugged in.

          I can unplug the UPS then Plug it back in to AC. It acts as if it did not
          even detect the interruption. It just continues "on battery"

          Circuit breaker tripped "NO"
          Ohmed out all Internal Fuses " All OK"

          Any Ideas ?

          Comment

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