Smart-UPS SC 620: Clicking, Beeping, keeps switching off - battery?

[Anonymous user]

I have a Smart-UPS SC 620 and an issue which isn't covered in the troubleshooting section of the manual.

Lately I've noticed that if I plug the TV into another wall socket (not where the UPS is) it trips the UPS and the UPS loses all power, even though it's plugged in. All the lights go off on the UPS and all I get is a regular beep every 5 or so. The connected equipment is immediately powered off.

Previously when this happened I switched it off and switched it back on again and it seemed ok.

Now if I try to switch it back on the green light comes on on the top, then when it goes into self-test mode all the lights go off again, power goes off, and it beeps every 5 seconds again.

Is the battery dead? If so, shouldn't it maintain power to my equipment? When this happens my connected equipment loses power (the UPS stops interrupts its uninteruptable supply).

Is the UPS faulty or is it just a dead battery?

Thanks.

EDIT: While all the above happens it sometimes also keeps clicking, every 1-3 seconds.

Message was edited by: planck_length

[BillP · Accepted solution]

i have a couple of questions for you..

1.) Is the wall socket you are plugging the TV into on the same circuit? it may not be the same socket/outlet but i suspect it is the same circuit.

2.) How much load is on the UPS currently? have to changed the attached load recently? added more to the UPS?

3.) If you have the UPS up and running normally, does it provide runtime for your attached equipment on battery. if so, do you know how long it runs?

my initial thought, which may change based on the info i asked above is that you are connected the TV to the same circuit the UPS load is on. the TV has a little bit if inrush current, similiar to when you power on a vacuum, air conditioner, or other high current device and the lights dim a bit, so the UPS sees that disturbance on the circuit, and tries to transfer over to battery but either the battery is bad AND the load is too high or the battery is just old an cannot support the attached load like it used to. thus, you may see it go straight to a load battery condition with the beeping, as you described.

can you provide the first several digits of your UPS serial number? such as QS0643? has the battery ever been replaced?

thanks!