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

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My 500-A Ups is making Buzzing sound.

I am having 500-A UPS. From Last 4-5 days whenever I am trying to Switch it ON The LEd of the UPS did not lit up but the UPS is making Kirrrrr or buzzer like sound. the UPS is near about 3-4 years old. Shall i change the battery.

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  • 71 Answers

APC 500VA ups meant for 1 Desktop and one montiro it will have battery backup for 10 to 15 minutes for the above.

Normally, You should make the raw power connected to UPS should be always ON.

The power cables of CPU and Monitor is connected with UPS. When not in use, please press the Button available on the UPS.

The UPS Life is normally 2 to 3 Years only. Now you are getting the sound and Red Light will always blink and not allow to use the system.

Better replace the 12 Vols battery to get some more life for the UPS.

And check for any loose connection of the power cables connected with Raw Power and UPS System.

Posted on Jul 19, 2009

  • P C Oct 17, 2013

    My unit did the same constant buzzing when the backup button was engaged. I bought anew battery and that did not fix the problem. A volt meter shows the charger is charging at 14.9 volts and the batter near 13 volts and it the unit buzzes. The back-up outlet is powered when the button in engaged. I think a relay is not locking on and may be going on and off rapidly, thus causing the buzzing noise.

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1 Answer

Apc es 500 making a buzzing sound when plugged in


Hi,

Sounds like it could be a bad battery connection or the unit is damaged at the internal components level - probably the charging inverter. You can replace your UPS using APC's Trade-UPS Program: http://buy.apc.com/commerce/storefronts/tradeups/tradein.aspx?storefrontcode=apcetu&countrycode=us&languagecode=en&tradeups_id= Make sure to pay attention to the country/region before you start filling out your information -- the link send you to the USA country.

We also sell them -- the direct replacement unit is a BK500BLK.... $116.70 your price not including shipping. We ship anywhere in the USA.

If you need UPS, Surge, or Power Related help contact:
Daniel (daniel@psihq.com) with Power & Systems Innovations 800.260.2259 or go to our website: http://psihq.com/
•• If this helped - click YES :) ••

Jun 05, 2014 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

1 Answer

No output


You should start with Rotary switch on "Maintenance Bypass" position and Qf1 open.
Turn Rotary Sw to "Test" position and wait for self test to execute and UPS to turn on.
Once you get the Yellow lamp lit, it is asking for QF1 to close
Once closng QF1, if green LED is lit, turn UPS off by pressing gray button until it ask for confirmation, select Yes and press Return.
Turn Rotary Sw to Normal position, press On button and the green LED will illuminate.
If, after closing QF1, the green LED didn`t lit, turn Rotary Sw to Normal, press On button and wait for green LED to lit.

Thats`it...
if anything is not working well.. please let me know.

Mar 25, 2014 | MGE UPS Galaxy 3000 UPS System

1 Answer

Several days ago, it started buzzing continuously, with all LEDs off. I tried rebooting it with the button, but it would either: A) go to battery mode for a couple of seconds (yellow LED), switch to AC...


This buzzing could possibly be from a transformer that has loosen up. It could also be that there is a short some where and the system trys to reboot only to find a major problem exist. Put your ear up to it and try to pin point the area. It could also be SCR's or IGBT's

Sep 08, 2011 | Opti (es1500c) UPS System

1 Answer

SO bad, and a bad response... I have 2 UPCs one started beeping for no reason, and will not stop...even when plugged into the wall with the battery disconnected... The other one is still silent. SO the...


These beep error codes may help you.
1. Four beeps every 30 seconds (On Battery LEDwill be illuminated)
This alarm indicates that the Battery Power Suppliedoutlets are now supplying battery power as opposed to power from the utility.If the UPS determines that the input utility power is unsafe for your computerequipment, the UPS will switch to battery power.
Note: Ifthe power disturbance is brief, you may only hear one or two beeps.

2. Continuous Beeping (On Battery LED will beilluminated)
This alarm indicates that a Low Battery condition hasbeen reached and that the UPS will soon shutdown. Once the UPS transfers to OnBattery operation, it can only stay on battery for a limited amount of time.The UPS will sound this alarm about two minutes before the batteries aretotally exhausted. Once exhausted, the UPS will shutdown and turn off itsoutput power to your equipment. If you hear this tone you should immediatelyshutdown your computer to prevent data loss or corruption.

3. Continuous Beeps for 30 seconds (Back UPSOFFICE 250 and 280 ONLY)
This alarm indicates the unit has detected an Overloadcondition after it has performed a self-test during start-up.

4. Continuous Two-Tone Beep
This alarm indicates a severe Overload was detectedwhile the unit was on-battery operation. This tone will continue to sound untilthe unit shuts down.

5. Continuous Tone (On Battery LED will beflashing)
This alarm indicates that the battery-powered outletsare overloaded.

6. Continuous Tone (On Line and On Battery LEDsflashing) Back UPS OFFICE 350, 400, and 500 ONLY
This alarm indicates that an internal UPS fault hasoccurred.

Feb 28, 2011 | APC Back-UPS Pro 650 UPS System

1 Answer

My Apc Back UPS Es 500 did not charge and then there is power when I turn on the switch. How could I repair this problem?


Good Day! Try changing the battery. please visit apc's service center for battery replacement. it will only take 3-5 working days. once done, your ups will be as good as new.

Nov 09, 2010 | APC BE500U ES 500 USB BACK-UPS 500VA/300W...

1 Answer

Strange noise comes out from the ups after a power cut


The Back-UPS Office unit has five different tones or alarms:

1. Four beeps every 30 seconds (On Battery LED will be illuminated)
This alarm indicates that the Battery Power Supplied outlets are now supplying battery power as opposed to power from the utility. If the UPS determines that the input utility power is unsafe for your computer equipment, the UPS will switch to battery power.
Note: If the power disturbance is brief, you may only hear one or two beeps.

2. Continuous Beeping (On Battery LED will be illuminated)
This alarm indicates that a Low Battery condition has been reached and that the UPS will soon shutdown. Once the UPS transfers to On Battery operation, it can only stay on battery for a limited amount of time. The UPS will sound this alarm about two minutes before the batteries are totally exhausted. Once exhausted, the UPS will shutdown and turn off its output power to your equipment. If you hear this tone you should immediately shutdown your computer to prevent data loss or corruption.

3. Continuous Beeps for 30 seconds (Back UPS OFFICE 250 and 280 ONLY)
This alarm indicates the unit has detected an Overload condition after it has performed a self-test during start-up.

4. Continuous Two-Tone Beep
This alarm indicates a severe Overload was detected while the unit was on-battery operation. This tone will continue to sound until the unit shuts down.

5. Continuous Tone (On Battery LED will be flashing)
This alarm indicates that the battery-powered outlets are overloaded.

6. Continuous Tone (On Line and On Battery LEDs flashing) Back UPS OFFICE 350, 400, and 500 ONLY
This alarm indicates that an internal UPS fault has occurred.

Jan 06, 2010 | APC Back-UPS ES 700 - UPS ( external ) -...

1 Answer

Ups is not glow any indication, just give buzzer sound , APC make 2000va RS model kindly tell me what i can do to repair it.


It look like dead battery. Try to connect carefully new (or allmost new) battery with 24v lamp in (+) wire. If UPS alive - you'll see only small momentary sparcle. After this - connect battery as usual and try to turn system on. Be carefull! If lamp lit in full power - it means a serious internal problem. Best solution - look for qualified serviceman. (maybe yoir system needs reprpogramming).

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3 Answers

Belkin UPS F6C800 Problem


Hello,

My name is Vikram Kumar Thumu, from India-Hyderabad. I have seen your message on the issue related to Shutdown of UPS whenever there is a Power Surge. I would like to provide my suggestions on the issue. I hope that this should work for you and will resolve the issue.


I see that you are using


Generally, the issue happens if you are not using the UPS as per Manufacturer specifications or if it is overloaded frequently then UPS  shutdowns


To isolate the issue, I recommend you to check and go through below information.

If you see ON BATTERY a Yellow LED OR Flashing Yellow
LED with Audible Alarm (Beeping) then it means this condition for the On-Battery LED can indicate 1of 2 problems: They are:

1. The UPS is on battery backup and an intermittent audible alarm is on. The UPS will begin shutdown procedure.

2. Battery is low. The UPS will sta rt shut down. The buzzer sounds an audible alarm .


if you see a Solid Red on your UPS , then it means that UPS is either fault or overload.  It happens if there is a issue with UPS. The LED will be lit continuously and the unit will sound an audiable alarm for 10 seconds. Other cause could be with Battery is weak or Bad, the Battery needs to be replaced under this condition.

If you use a Flashing Red LED, then it means that battery is trying to give more power than it should. It happens then UPS is overloaded.

Let me tell you,,,,

Only data sensitive equipment such as a computer, monitor and external drive should be plugged into these outlets. Battery power is automatically

provided in case of a power outage. Power (AC or battery) is not supplied to these outlets when the UPS is switched off. (Do not plug surge protectors or power strips into the battery back up outlets).

 Most Important factor that effects the issue is that,
 

Caution: Never connect a laser printer or scanner to the backup outlets of UPS with other computer equipment. A laser printer or scanner draws significantly more power when in use than when idle. This may overload the UPS.


And caused the UPS to shutdown whenever there is Power Surge

To isolate the issue further, let me tell you the way where you can test the UPS if it is fine or not.

1. Charge the UPS for around 4 hours, and try below steps.

  

To Conduct a Self Test

 

Use the self-test to verify both the operation of the UPS and the condition of the battery. In normal utility power, push the On/Off/Test

button less than 2 seconds and the UPS performs a self-test function. During the self-test, the UPS operates in back-up mode.

Note! During the self-test, the UPS briefly operates on- battery backup power (the on-battery LED comes on). If the UPS passes

the self -test, it returns to on-line operation. If the UPS fails the self-test, it immediately returns to on-line operation and lights the replace battery LED. The loads are not affected. Recharge the battery overnight and perform the self- test again. If the replace battery LED is still on, the battery will need to replaced.

 

This should resolve the issue for you.

 

 If you need any further assistance on the issue, you can mail me at thumuvikram@rediffmail.com . I'll be glad to help you.

 

Bye.
 

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1 Answer

IBM-OP500 Battery back-up


Have you tried pressing and holding the off\on switch to make sure it toggles to "normal" rather than "charge"?

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