Question about APC BE500U ES 500 USB BACK-UPS 500VA/300W 120V (NEWITEM13161417) UPS System

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My BE500U backup UPS ES is emitting a continuous alarm. Is this a dead/dying battery issue or something else?

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I found cooling fan was seized, causing overlheat, and loud whistle. WD 40 eased up the bearings, but I expect I will eventually have to change the fan. Mine is an APC XS900.

Posted on Mar 23, 2011

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My apc back ups es 650 has a continous chirp what doe that mean?


the chirp means a power event has occurred and the unit needs reset to continue operation , power events can be a few things ( to large a current was applied as a load to it , the power stayed off till battery failed and it had to charge it back up when power comes back on )

Apr 29, 2014 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

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APC UPS ES 500 series continuous beep sound and flashing green light


Hi Lasantha,

Check the battery in your UPS - it's most likely going bad and you will need to replace it.

If you need UPS, Surge, or Power Related help contact Daniel @ Power & Systems Innovations 800.260.2259 or go to our website: http://psihq.com/
** If this helped - Give it a Thumbs Up :) **

Dec 03, 2013 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

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My apc up es 500 is not turning on please help.. i havent used it for 1 year


You may have a battery problem.
Re-chargeable batteries require continual use and do not work after a long period on non use.

Apr 09, 2011 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

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I have a burnt diode D4 on APC BE500U UPS, what are the diode specification/part number?


D4 part number is EGP20D, which is a diode for Ultra Fast Switch. 200V, 3.0A. You can find more details in this site: www.nteinc.com
Go to the cross reference and type this number.

Nov 22, 2009 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

2 Answers

APC back-ups es500 alarm continuously sounds why we power it off and alarm stops everything works fine then we power it back on and alarms sounds again


It means it has an internal fault. if still under warranty period, just call APC and ask for replacement. if it out of warranty bring it to service center or better if you have to buy a new one because as far as i am concerned repair cost of this unit is much expensive than a new unit

Jun 22, 2009 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

2 Answers

Clicking


that's a sure sign that you are in low battery condition, and the inverter is approaching shutdown. You may need to either deep recharge the batteries, with NO load, or replace them completely.

Got Backup?

Feb 10, 2008 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

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