My UPS ' trouble

rfd3_apc · ‎2021-07-29

This was originally posted on APC forums on 11/5/2010

Hi all!
I have a problem with my UPS. And please help me to solve this
At the time about 11 am, its happenned 3 day continuously, this UPS turn off automatic and report that :
" An automatic Voltage regulator (AVR) relay fault exists
Refuse a self- test; UPS is overload.
Could I attach this event log file folowing?

BillP · ‎2021-07-29

This reply was originally posted by Angela on APC forums on 11/5/2010

hi

it looks like you have an issue with low input voltage so the UPS is utilizing its Automatic Voltage Regulation transformer to boost that voltage for you so that the low input voltage isnt passed to the output and damages your attached equipment. there is a relay that is associated with that transformer and it appears there is a fault with the relay.

generally, this requires the UPS to be replaced - under warranty or via purchase.

you may also want to provide us the data log from the unit or investigate why you are receiving low input voltage. the relay fault could be due to prolong use of the automatic voltage regulation which can degrade the life of the unit and cause issues like this and create extra heat that will cause the battery and UPS to possibly have a shortened life span. [these instructions will help you get the available logs in .txt format|http://nam-en.apc.com/app/answers/detail/a_id/9321]

please provide us the exact model of the UPS from the little white sticker on the unit if possible. we also need to know the nominal input voltage in your area versus what the data log is reporting. the model of the UPS you have will tell us what the UPS expects.

See Answer In Context

BillP · ‎2021-07-29

This reply was originally posted by Angela on APC forums on 11/5/2010

hi

it looks like you have an issue with low input voltage so the UPS is utilizing its Automatic Voltage Regulation transformer to boost that voltage for you so that the low input voltage isnt passed to the output and damages your attached equipment. there is a relay that is associated with that transformer and it appears there is a fault with the relay.

generally, this requires the UPS to be replaced - under warranty or via purchase.

you may also want to provide us the data log from the unit or investigate why you are receiving low input voltage. the relay fault could be due to prolong use of the automatic voltage regulation which can degrade the life of the unit and cause issues like this and create extra heat that will cause the battery and UPS to possibly have a shortened life span. [these instructions will help you get the available logs in .txt format|http://nam-en.apc.com/app/answers/detail/a_id/9321]

please provide us the exact model of the UPS from the little white sticker on the unit if possible. we also need to know the nominal input voltage in your area versus what the data log is reporting. the model of the UPS you have will tell us what the UPS expects.