Question about Powerware 9120 UPS System

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Powerware 9120. 1500i UPS

I have a 2No.s of Powerware 9120, 1500i UPS installed on board ship at Goa-India. One of that shows 'OVER TEMP FAULT' error on screen. What causes this error? How can this be repaired? What is the battery replacement interval?
Can you please send me User Manual for this model?

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  • Anonymous Mar 03, 2009

    I have battery backup problem we have a external battery also but still we are not getting backup



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You can download the manual and other literature at

The contacts for support in India are found at

They offer a battery monitoring software package, at

You can email support at
Good luck

Posted on Feb 23, 2008


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Are the fan working?
u may need to clean the ups, u will need to unplug it and open the front part by pressing on the boton sides and pulling out. take the bateries out. and now u can take out the screws in the back and clean the ups inside, just use a compressor, take care that doesn't have water inside the compressor, and u can replace the batteries, theya are conected in serie.
good luck

Posted on Jul 01, 2008


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Hi, here is the documentation page for the 9120 where you can find the manual: You can also contact customer support 800 356 5737 or You may recognize the product as the Powerware 9120 but Powerware was bought by Eaton a few years ago. The customer support team is most ex Powerware and are familiar with the 9120.

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