UPS Powerware 9120 3000i Battery Disconected Error

[Hrvoje-CRO]

Hello everyone!

After the air blowing(cleaning), UPS reports an error "battery disconected" error. Cold start is not possible, ups tries to start but it fails. I measured the battery voltage and the voltage is about 110v. When plugged in mains, during powering up the display show's the message "battery disconected". What could be the cause of the problem?

Thank you in advance!

[petehall347]

Re: UPS Powerware 9120 3000i Battery Disconected Error

battery is likely disconnected then . check continuity and check the fuse .

[stj]

Re: UPS Powerware 9120 3000i Battery Disconected Error

check the fuse with a meter - not your eyes.
i had a 50A fuse fail with a hairline break in a ups.

[Hrvoje-CRO]

Re: UPS Powerware 9120 3000i Battery Disconected Error

battery is likely disconnected then . check continuity and check the fuse .

Checked and there is no problem with fuses or battery packs. Also i measured voltage on the rear side of ups, the voltage is 111V.

[budm]

Re: UPS Powerware 9120 3000i Battery Disconected Error

How many batteries are used in your UPS? Did you test each battery with dummy load connected to each battery when testing the battery's Voltage?
BTW, DO you have any good clear pictures of what we are dealing with?

[Hrvoje-CRO]

Re: UPS Powerware 9120 3000i Battery Disconected Error

How many batteries are used in your UPS? Did you test each battery with dummy load connected to each battery when testing the battery's Voltage?
BTW, DO you have any good clear pictures of what we are dealing with?

https://postimg.org/image/4zcyyu1th/
https://s3.postimg.org/fr02njdlf/20170523_135316.jpg
https://postimg.org/image/87s3iljah/
https://postimg.org/image/e7ude6h5p/



I tested each battery and there is no problem with the batteries. Ups has 2 battery banks with 4x of them in each pack.

[AleXis6]

Re: UPS Powerware 9120 3000i Battery Disconected Error

what it was the fault reason?