Back-UPS BE750 master enabled stopped working

[Anonymous user]

I have been using a back-ups BE750 for some time now.  The master enable has always worked just fine.

Recently, I have unplugged the ups to move it and since then, the master enable mode will not turn on.  When I press the button, it will beep (as it says it should in the manual) but the light will not turn on.  I tought the light might be broken but when I turn off the master, the devices in the master controlled ports will not shut down.

I tried using the power chute software to enable it but it will not apply the settings.  Once i close and reopen the software, the option is always turned off.

I tried unplugging the cells in the battery and plugging them back in - No change.

I am unsure how to handle this and could not find a similar issue in the forums and by doing a google search.  Would anyone have a idea on how to resolve this ?  I really enjoyed this function and would really like to be able to re-enable it.

[BillP]

Hi,

Try resetting the UPS

1: Disconnect any attached load.

2: Unplug the UPS from the wall socket.

3: Disconnect the UPS' internal battery.

4: Push and hold the "On" button on the UPS for 5 seconds

5: Reconnect internal battery.

6: Plug UPS in to known good power source.

7: Turn UPS on.

8: Test

[Anonymous user]

Thanks for the answer 😄

I tried the steps you provided but sadly the master enable mode still won't turn on.

Is there anything else you can think of that I could try to resolved this ?

[BillP · Accepted solution]

Denis,

Unfortunately those steps are the only reset option for the Back-UPS. If the UPS is under warranty you should contact your local technical support to request a replacement.

http://www.apc.com/site/support/index.cfm/contact-information/