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Posted on Sep 13, 2011
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Emerson UPStation, Liebert GXT21000RT120. 2 tower battery is continuing to alarm. Bypass light is on and AC input light is on. This happened after dropping a plastic water bottle on top of the main tower. Don't believe any water came out, nor was it hit hard. Seems odd

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t support

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  • Expert 169 Answers
  • Posted on Sep 15, 2011
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Joined: Apr 21, 2008
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Hi Tammy, this can only be done if the load is not critical....
If load is critical then shut it down first.

On bypass you will be getting one beep every min or so
Try pressing the inverter on button, there should be a single beep, and then if all is well the inverter will come back on line. All leds will then be green.

Suggest once working that it be checked to see if it will still support load during outage.

If this does not work then please post again.

In the manual there is pages of fault diagnostics which may assist, if you don't have the manual it can be downloaded from the Emerson website.

Hope this helps,thanks for using FixYa

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Dear sir, We have 1 ups having problum with

Very complicated these items. I have not been able to repair even apparently simple faults, manufacturers such as emerson/leibert do not release cct diagrams, so very difficult to fix as there are many different sections (pfc,rectifier,charger,upconverter,bypass,inverter) of the circuit all interconnected with a micro processor monitoring and controllling the whole thing. You have to be really lucky to sort out any problem particulary one with blown components.

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Emerson do not release diagrams, if the u nit is less than 2yrs old it is still under warranty.

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Looking for Service Manuals for the GXT Series

Try this site: http://www.liebert.com/servicesupport_pages/ProductDocumentSelector.aspx

They have a large number of manuals available for download for a variety of UPS systems, including UPStation.

-John
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