UPS Problem .

ilti

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Jan 28, 2011
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My problem is that my ups work ok, but when i connect to the ac line (240 V ac) it tries to work properly but it doesn't. It works as before, in other words it work like it is not connected to the ac line.
 

ilti

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I don't have possibility to try with 120V, because our line in Europe is 240V. It's alarm buzzer beeps continuously even it is connected to ac, and there is a yellow led turned on. What should I do?
 

ilti

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It is GUARD inform. The battery is ok because I measured it and it's ok (12V). Another thing I just noticed. When I turn on and connect to ac line, a yellow led turns on and a alarm buzzer beeps continuously.
 

molletts

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Jun 16, 2009
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OK, first check that the socket you're plugging it into works. Also, try a different power lead for the UPS - the fuse in the plug may have blown or the lead itself may be faulty. (They're usually the standard IEC320 "kettle lead" type which is used for PCs so you should be able to borrow one from another piece of equipment.)

There may also be an internal fuse in the UPS; this is often accessible on the back either in a small pull-out "tray" under the inlet connector or as a small, round, black plastic cover about 1cm across which can be opened using a screwdriver. Check that this fuse hasn't blown too.

(If you've got a multimeter or something else that can be used as a continuity tester, that would be perfect for testing the fuses.)

Hope this helps,
Stephen
 

ilti

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Jan 28, 2011
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First, the socket is working, I tried my cellphone charger in it. Second, I measured the power lead with multimeter (beep function) and it also works. I tried to find an internal fuse but i didn't found (it might not include I think because I opened the case and sow everywhere). So I don't know what else to do and I am very annoyed with this one.