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Ups disconnect get a intermintent ups disconnect then reconnect, how can i fix this

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It could be the relay is faulty repalce with a new one

Posted on Mar 31, 2009

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1 Answer

APC ES750 buzzer


Need new batteries probably as batteries may have developed high internal resistance.
Test the batteries one at a time whether they would light up a car headlamp bulb.

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we have installed a new ups but the battery light indicates red light even though its on charge

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No power whatsoever. no lights. I have it plugged in and hit the reset button but nothing. I have disconnected and reconnected the battery nothing. Is it possible the thing is dead?


Depending on how old it is, it is possible. You might want to check on replacement battery for it. It may be cheaper to replace the whole unit, I don't know, i haven't priced one lately. If you do replace the battery, be careful or have someone do it who has done it before.

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Ups will not come back online it said it has an invertor problem


usually batteries, check them exhaustively. try disconnecting from everything, and reconnecting again, failing that, it may have had a component failure.

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1 Answer

As soon as power goes off computer is off. led is blinkinging green and orange.


The battery inside of this APC unit has a shelf life of 3-5 years.

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Disconnect all loads and leave it plug in overnight.

This will give the internal battery a good charge.

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Reconnect the CPU and monitor (NON-CRT) and test again.

Make sure the total wattage is not over 500 watts.


Dec 25, 2009 | APC (BE500U-WEB) (BE500UWEB) UPS System

1 Answer

Overload LED lit, constant warning tone, no load on unit. Is there an internal component available to repair this unit?


I have seen this caused by a defective battery. Disconnect the battery and reconnect to AC and see if the overload symptom disappears.

Lou

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1 Answer

On/of button


Check the fuse on the ups

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1 Answer

Desk top APC UPS ES750 not communicating


Here is an answer I got from APC when one of my client got the same problem as you did:

The error message would pop up if the link between the computer and the UPS is weak. I cannot rule out a problem with the cable or the UPS. In order to confirm the same please try the following steps which might help :

1) Ensure that the USB cable is properly connected to the USB port of the computer.

2) If the PC was powered on before the UPS, communication will not be achieved until you disconnect and reconnect the USB cable to the host. In this case, you need to disconnect and reconnect the USB cable to establish communication.

3) Some other software is polling your USB port for another device, thus causing the UPS software to temporarily lose communication with your UPS. If this is the case, you would need to shut down that application.

4) If you have any other USB devices connected to the PC, disconnect them and then try plugging in the cable.

If the issue persists, please visit the following link which lists few troubleshooting steps :

http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_sid=oXhRFGEh&p_lva=&p_faqid=2923

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