Question about NEC APC Smart-UPS 3000 RM 3U (050-01800-000) UPS System

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Hello, my battery lights keeps flashing on my 3000 va APC ups. Can you help me.

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: All Led's keeps flashing in the battery charge bar graph after replacing batteries.

just remove the battery again & dont put it back till 30 minutes then connect ur batter again.

Posted on May 28, 2008

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SOURCE: apc ups flashes red light to replace battery, but battery is new

i think by replacing the battery has not been the solution to the problem

u need to check the battery charging voltage when turned ON with main electricity, if no voltage present from charger, there is no question of battery getting charged and also once the battery is down with charge it may not re charge hence the indicator and alarm.
recomended to nearest service centre

Posted on Sep 13, 2008

  • 37 Answers

SOURCE: all lights flashing in ups and no output

you juz need to re set the ups by turning off the ups and the main source.. and if you install a smnp card unscrew the screw and take out the web card and insect in back again. than you turn on the main source after that you will than power up the UPS..

Posted on Mar 24, 2009

  • 19 Answers

SOURCE: APC Back-UPS ES 500: green light flashes&continuous warning tone

On this unit, the likely culprit is the battery and that it needs to be replaced.

With that, you may want to think about the pros and cons of replacement versus buying an entirely new unit.

This unit is a relatively low end ups and the surge supression uses MOVs that wear out with repeated absorption of energetic spikes. That's why the better (and higher cost) UPSs and surge suppressors don't use them. They're not really that good anyway due to their relatively high transient impedance. The better equipment uses a "transorb" -- basically a back-to-back high voltage zener diode optimized for low breakover impedance and high instantaneous power capability. Unless the transient exceeds the design parameters of the circuit, these do not wear out and do not degrade. That being said, I will assume that you would likely replace this unit with a similar one.
The flashing may not be the battery at all and may be the charging circuitry, thus your new battery may not live very long (half the life that you would expect.

Many batteries out there are refurbs and have issues as all used parts do.

If you contact APC, they will likely give you a 35% discount on purchasing a new product.

The difference in price in the battery replacement vs. ups replacement at this level may only be a few dollars more.

I promise that I am not a UPS salesman, I just deal with many on a daily basis; therefore I am giving my two cents to try to thelp you avoid problems a year from now.

Posted on Dec 30, 2009

Testimonial: "Outstanding answer with right amount of detail. I swapped battery with identical APC UPS that I have and vfd that battery was cause of warning tone."

  • 7 Answers

SOURCE: 3000 VA UPS Service Manaul of Fiskars Power Systems Make

I have the same PCB on my Deltec PRR2200i. I at least know a few things about the circuit now. I had 11 transistors explode on mine and am replacing them now. Sadly I have not managed to track down a circuit diagram.

Posted on Mar 30, 2010

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Hello Sing,

There is a possibility that your UPS doesn't like the voltage or frequency that the generator is feeding it. As per an APC knowledgebase article, the size of a generator should be 3 to 5 times higher that the total Watt/VA load that it would be supporting.

There are also instances wherein the sensitivity threshold of an APC BackUPS is set too high that a slight change in voltage/sensitivity would cause the unit to switch from online to on battery too frequently. This can be addressed by lowering the sensitivity either by their APC PowerChute Personal Edition Software or via the front panel switch.

If you are going to do it via the software, it needs to be installed on your computer. Prior to downloading it, make sure that your operating system is compatible with it. Suppose that your operating system is compatible, once the program is installed you will need to open it up and look for the Sensitivity option and from there you could select Low, Medium or High.

If you are going to do it via the front panel switch/button the UPS should then be turned off but plugged in to an input source. Press and hold the On button until you see that the LEDs are flashing. Once the LED is flashing, press the button again to set the desired sensitivity. Low sensitivity would show the On Battery LED flashing. Medium is On Battery and Overload LED while High is On Battery, Overload and Replace Battery LED flashing. If you'll see a flashing Online LED it means that you are cancelling or exiting the program mode of the UPS.

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1 Answer

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More than likely it just needs a new battery. If the power is sagging (called a brownout) the UPS is trying to switch over to the battery to keep the power consistent. The beeping is probably a code that indicates there is an issue with low voltage on the battery. New batteries are around $20-25. Here's a link to the replacement battery: http://batteryinternational.com/apc-backups-es-be350es-ups-battery-ups-batteries-f1.html

Hope that helps.

Jan 21, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

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APC Back-UPS ES 350 - when powered on has a blinking green light Is this normal


A blinking green light is likely an indication that the internal battery is nearing the end of its usable life cycle. If it's over 3 years old this is likely the case. To test, plug something in to the battery outlets and pull the plug of the UPS from the wall. If you get a short runtime (or none at all) it's the battery. Batteries are under $20 and can be found here: http://www.batteryinternational.com/apc-backups-es-be350u-ups-battery-ups-batteries-f1.html

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1 Answer

My APC back-ups es500 is keep on flashing in orange and green having the beep sound, whe it is on. It has been used for nearly 3 years. What would be the problem...?


Hello,

Probably the battery is drained. You should charge it first. And if the problem still persist, it could be that the UPS battery needs replacement.

Aug 01, 2009 | Computers & Internet

2 Answers

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It may just need a new battery. The UPS will do a self test on the battery when you turn it on. It may have tried to read the battery and the result came back as "failed". The batteries last about 3-5 years, even less if you live in an area with bad power. The batteries are very easy to change. You can buy replacements at www.batteryinternational.com/apc-backups-es-be350es-ups-battery-ups-batteries-f1.html

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1 Answer

APC ES-350 won't turn on; all I see is a blinking light.


Try looking for a small circuit breaker on the side that says "press to reset" - you could have tripped it accidentally when you unplugged the iPod.  Also, try pressing and holding the UPS power switch for 10-15 seconds.  That should force a power on as well.

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1 Answer

All lights flashing in ups and no output


you juz need to re set the ups by turning off the ups and the main source.. and if you install a smnp card unscrew the screw and take out the web card and insect in back again. than you turn on the main source after that you will than power up the UPS..

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