Question about Powerware 9120 UPS System

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Over charger how to repair over charger showed ups 9120 powerwear ups

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Be more specific. Exactly what do you see?

Posted on Sep 11, 2014

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1 Answer

Bc bus fault of 9120 2KVA


Suspect charger board failure. Replace with new model 9130. 9120 is obselete

Mar 21, 2013 | Powerware 9120 UPS System

1 Answer

Ups 6 KVA power ware 9120 indicate the problem of (charger failure) ,please provide circiut diagrame of relevant UPS or help to point out the particulare section of circuit with component numbers in...


Here is the 9120 documentation page but Eaton generally does not publish circuit diagrams for smaller UPSs like this. Some people may be technical enough to take a UPS apart but most aren't and it can be very dangerous. I suggest you contact the Eaton hardware support forum.

Jul 15, 2011 | Powerware 9120 UPS System

1 Answer

I have a powerware 9120 (6kva) and about 1 week i replaced all 20 batteries after the UPS failed. but its displaying battery disconnected when i try to power it. i cant seem to figure the problem. i tried...


Did your UPS display "Battery disconnected" or did it display "Battery Failure"? If it was "Battery Failure", for some reason the Powerware 9120 will take almost 18 hours after plugging in to power after battery replacement to correct the Battery Failure indication. Charger has to charge up the batteries, followed by an automatic battery test by the UPS. If the indication was "Battery Disconnected", you will need to check the internal fuses to see if they are blown. If the UPS keeps blowing fuses, it will require a board repair.

Jun 12, 2011 | Powerware 9120 UPS System

2 Answers

Powerware 9120 6000i model indicates a charger failure. It is the first time that we opened this unit and we do not know the location of the charger circuit (we do not have a schematic diag). Could you...


The charger in powerware 9 series 9120 6000i ,the fan is of a quality that it fails and the heat sink does not get sufficient cooling ,it runs on 12 volt ,i replaced it with a cpu fan from a mainboard on a pc and it works perfectly now. make sure that the fan is running else the charger might go in protection or can fail due to the transistor on heat sink fails.

Feb 08, 2011 | Powerware 9120 UPS System

1 Answer

I ave a powerware 9120 and get a Charger failure alarm


check your batery, may it was leaked, change it with new battery

Jan 17, 2011 | Powerware 9120 UPS System

1 Answer

Charger Failure present


If it a 9120-700VA then the problem should be Diode MUR460

Oct 18, 2010 | Powerware 9120 UPS System

4 Answers

Pw9120-6000


1st, the 9120 is a 700, 1000, 1500, 2000, 3000, 5000 or 6000 Va
if it is a 6000 Va that voltage sounds ok, and the ups as no problem, each battery will be around 12,75 Volts, it will be higher and the charging circle ends.

Jun 27, 2008 | Powerware 9120 UPS System

1 Answer

UPS 9120


did u check the fuse inside the ups?
did the ups gave the error right after u replace the batteries? or some time after.
sometimes gives the message some time after and its because the charger isn´t working properly. the charger is a spare board in the 9120, 5 and 6 KVa.
good luck

Jun 21, 2008 | Powerware 9120 UPS System

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