Tripp Lite G1000U Fault – Fixed!

20151002_123014654_iOS-cSo this morning I come to my home-office and find my four monitors dark.  Nothing unusual, except that a wiggle of the mouse and a tap of the keyboard fail to bring them to life.  I glance down at the UPS and find that it, too, is dark.

Apparently during the night my Tripp Lite G1000U UPS “faulted”, and somewhere along the way, it shut down, taking everything else with it.

I went to the Tripp web site hoping for some assistance.  I searched for G1000U, G1000, and the series AGOM7057.  Nothing!  My UPS is around 4 years old.  “Maybe its the battery,” I thought.  UPS batteries are notorious for not lasting too long, in my experience.

I tried resetting the fault.  Oh wait, there’s no way to reset the fault.  I unplugged it from the wall, plugged it back in — no luck, still faulted.  I unplugged it and removed the battery which I then connected it to the battery tester I have.  (It’s designed to test and charge LI, NiCad, and Lead batteries.)  It reported that the battery is up to proper voltage, and tests OK.

I re-inserted the battery into the UPS and turned it on — still faulted!  But then, leaving the UPS turned on, I unplugged it from the wall.  In a few seconds, I got the familiar “your UPS isn’t connected to electricity” beeping.  I thought, “Well, that’s odd.  If the battery has failed, shouldn’t the unit just give a sigh of futility and shut itself off?”  I plugged the UPS back into the wall… and PRESTO!  No fault light!

I put everything back into place: UPS on the CPU shelf, plugged in the 3 cords I normally have in the UPS, and powered up the PC.  All is well!

I can’t say this will work for everyone, but if you have a Tripp Lite G1000U UPS that shows “FAULT”, try this:

  1. Turn the unit off.  Unplug all the devices from the UPS, so it’s just you, the UPS, and the wall socket.
  2. Unplug the unit from the wall.
  3. Replug the unit back into the wall.
  4. Turn the unit on.  Wait a bit for it to “settle in”, then…
  5. Unplug the unit from the wall outlet — leaving it ON.
  6. Wait for the familiar “not electricity, on battery” beeping.  Wait a few seconds more, to make sure the unit really does continue to operate as if the battery is in good shape.
  7. Plug the UPS back into the wall.

Hopefully that works for someone.  If it works for you, please leave a comment below.  Thanks, and good luck!


Update: With a week or so of no problems, the unit faulted again, except in this case it would continue to supply online-power to the computer and a few external disks, but the fault wouldn’t reset.  I tried unplugging the unit’s input power, and the unit would then fail to provide power downstream, so “something is wrong”, but it doesn’t give the “battery failure” indications I was expecting.  I removed the unit and replaced it with a Cyber Power unit.  I’ve not no particular brand preference; it was just cheaper at Fry’s Electronics.

One thought on “Tripp Lite G1000U Fault – Fixed!

  1. Thanks for this great post. I have this model and had exactly this problem. I also struck out on the Tripp site, unable to find a manual. for the G1000U. I found something for G1010UPS and opened it, hoping the similar model number meant it would help. It described a “self test” process that didn’t work on my G1000U. Process is turn it on, then hold the mute button for 2 seconds. That just turned my box off. Your solution of unplugging it worked for me.

    I’m very glad I don’t have to buy a new UPS.

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