BACK-UPS ES 550 - sockets powered after shut down

[Anonymous user]

Hello,

I'm experiencing change in behavior of my APC Back-ups ES 550. When I power off the unit, appliances connected to the battery backed-up sockets stay powered. This has not been the case until about week ago. Slave sockets power down correctly when master socket (PC) gets powered off.

Also, previously when I powered on my unit, I could hear slight hum from PSU of my computer while unit performed self-test. This also no longer happens.

I get no errors or warning form the unit after start and power back-up function seems to work ok.

Should I be worried and is there any way to have backed up sockets to power off after unit powers off again?

Best regards,

Michal

[mitsmith_apc]

Hi Michael,

When the back-ups is completely powered down you should only be getting power from the outlets labeled surge protection. The battery backup + surge outlets should not be providing power. This is not a user changeable setting. Have you changed anything in your configuration since this started happening? Maybe take a picture of how you have everything plugged in and I can take a look at it for you.  

Regards,

Mike

[Anonymous user]

Hi Mike,

no I have not changed anything. I have PC and display plugged to backup sockets and sound system to surge-protected slave sockets, which has PC as master. When I shut down PC, sound systems gets power down, but when I power down the Cyberfort unit, PC and display are still powered on. I can take picture when I get home, but it will only show what I just wrote. Should I contact warranty/repair service then?

[BillP · Accepted solution]

Hi,

When the unit is powered off there should be no AC flowing from the Battery/Surge outlets. If that is happening and the unit is under warranty you should contact local support for assistance and possible replacement.