Question about Compaq UPS T1500 XR (204155-B32) UPS System

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Utility LED flashing green/red



The Utility LED is flashing green/red.

What is this telling me?

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Re: Utility LED flashing green/red

Seems like your Battery is very low. Try charging the battery for a few hours. If the problem persists, it maybe the time to get a new battery.
Like all batteries, UPS Batteries (that store electricity and let s you use it in case of a power failure) have a limited life. This life is averaged to be around 2 years. So in case your UPS has been in use for approximately that much amount of time, the battery is in a near death situation.

For instructions regarding replacing the battery, please refer to your UPS Manual.

PS: Also, I have noticed this kind of behavior when the UPS is connected to a socket powered by an Inverter. This kind of behavior is observed when the Inverter battery is running low.

Posted on Oct 17, 2007

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This alarm indicates that the Battery PowerSupplied outlets are now supplying battery power as opposed to power from theutility. If the UPS determines that the input utility power is unsafe for yourcomputer equipment, the UPS will switch to battery power.
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Belkin UPS F6C800 Problem


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 . I'll be glad to help you.



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