Question What is AVR and n APC Back UPS?

WrongRookie

Prominent
Oct 23, 2020
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Whenever my ups runs at late night, it shows AVR and the fan keeps running during this time until it turns off. It doesn't happen before this time.

So what is it and why does it require the fan inside to run and is it considered normal or something under defect?
 

kanewolf

Titan
Moderator
Whenever my ups runs at late night, it shows AVR and the fan keeps running during this time until it turns off. It doesn't happen before this time.

So what is it and why does it require the fan inside to run and is it considered normal or something under defect?
"AVR" = automatic voltage regulation. Your mains voltage is probably sagging (dropping lower more than 10%).
 

WrongRookie

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Oct 23, 2020
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"AVR" = automatic voltage regulation. Your mains voltage is probably sagging (dropping lower more than 10%).
So should I change the AVR setting to high or low and not default?

But I don't know about the voltage dropping because everything seems to run fine with no drops. The apc guy even said that the plug outlet us also fine
 

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