Question about APC Smart-UPS 1000VA UPS System

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APC Smart-UPS 1000VA is powered on but not working

It was working very well, now its continuously between ac power & back up. I can listen a sound of relay of the ups, it is continuously on ac power then backup difference of 1 second.

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Re: APC Smart-UPS 1000VA is powered on but not working

Try turning the unit off for a little while, unplug it from the source even. afer about 5 minutes plug it back in and try it again. You may have a bad battery, how old is the unit. UPS batteries should be changed out every 3 year's, max every 5 year's if you want good reliability. At 5 years you are taking a chance.

Posted on Jan 25, 2007

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My smart ups 3000ux is not on in ac power , ups is working in dc power. so what is problem.

most probably it can be an issue with your incoming supply check if it it within the accepted range check your power cable inside the ups check if there are any open cct

Aug 11, 2013 | APC Smart-UPS 1000VA UPS System

1 Answer

Dead UPS--Won't Power Up

If it's newly bought, let it charge for at least 10 mins. to be able to power on and can be use. If it's not working then call APC Help Center for instructions on how to replace the product with a working one..

Aug 25, 2010 | APC Smart-UPS 1000VA UPS System

1 Answer

Infinit loo between online and on battery?

With all 5 units behaving the same, I would expect that the power is still out of range. If the power is too high or too low (see manual for thresholds) the unit will stay on battery power to protect the attached equipment. If you have the software loaded, it will show you what the input AC voltage is at. Otherwise, it could be time for new batteries:

May 09, 2010 | APC Smart-UPS 1000VA UPS System

3 Answers

I hear some tick sounds in ups and the ups doesnt supports when there is a shutdown in power


If the UPS does not support the system when there is a shut down in power it means your batteries are degraded.

you have to replace the battery of the UPS and it will be working fine then.

Thank you

Aug 06, 2009 | APC Smart-UPS 1000VA UPS System

1 Answer

APC smart ups 1000va

Here we go again.. i encouter a lot of this problem. just change the whole front panel board and everything will work fine.

Jun 11, 2009 | APC Smart-UPS 1000VA UPS System

1 Answer

Apc smart ups 1000va does not work propery. when i switch on they make noise continuous so how can u help me plse.

UPS has an internal fault, ask APC to replace it if there still have a warranty or send it to service center for repair

Apr 29, 2009 | APC Smart-UPS 1000VA UPS System

2 Answers

APC Smart-UPS 1000VA UPS System calibation problem

If battery charge indicator is flashing it should be UPS calibration issue, If all the LED indicator is light up in the front panel and UPS still can go online on battery mode you just need to replace the board on the front panel and the light will just back to normal state.

Apr 25, 2009 | APC Smart-UPS 1000VA UPS System

3 Answers

APC Smart-UPS RT 1000VA

Hello Dear Specialists I have a problem with the APC Smart-UPS smart 1000VA: when I insert the
power plug in the wall outlet in one ups , indicate the AVR Boost ups regulating low AC voltage, when I measuring the AC city power voltage that is 207v .whey this ups is not working about the AC low voltage? ,but it should be work from (170v ~ 230v) AC input volte.please solve this problem, which element of AVR from the ups is failed or wrong and give me free circuit diagram low & high AVR and charger and inverter circuits. thanks allot

Aug 20, 2008 | APC Smart-UPS 1000VA UPS System

2 Answers

APC Smart-UPS 1000VA shut down and now will not power on. How do I troubleshoot? No power, no lights, nothing and I've never tried to troubleshoot a UPS before. Where do I start?? :-( Thanks Chris

Hello Chris,

I have a similar unit and there is a fuse inside that can blow. Mine did. It worked again after replacing the fuse.

Another option...check the battery connections.

Another option...are the batteries getting old? If so, when they won't reach a certain level of charge the unit will not power on.

Finally, make sure you don't have a blow fuse or popped circuit braker in your home.

Hope this helps?


Nov 21, 2007 | APC Smart-UPS 1000VA UPS System

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