It's not clear to me that the ups is at fault.  There is no indication
on the front panel that anything is wrong with it except for the
multiple on-battery/on-line messages a day.  I have other upses from apc
and they don't do this except very occasionally.

If it were a self-test, then I'd expect some regularity, say, once or
twice a day when the ups switches to battery, then back to line power
during the self-test.

It seems to me either the circuit it is plugged into is really bad, ie,
large swings in voltage or the ups itself is overly sensitive to it
which suggests the ups is bad, or at least, cannot be relied upon to
function properly in a real event.

On 11/09/2015 08:31 AM, ONeal, Miles wrote:
> Ken,
>
> Why do you think the UPS is at fault?
>
> -Miles
>
>> On Nov 9, 2015, at 07:13, Ken Teh <[log in to unmask]> wrote:
>>
>> I need some advice on how to troubleshoot an apc smart ups.  I am
>> getting pairs of onbatt/online messages from nut 3-4 times a day.  No
>> particular regularity.
>>
>> My first attempt at a fix was to set the power quality to fair to see if
>> that would help.  Nope.  There is an advanced config option called the
>> transfer setting which I gather is a specific value for triggering an
>> on battery transition.  I've not tried this.
>>
>> I'm thinking of trying an alternative circuit to see if that helps.
>>
>> But, all this is basically stabbing at the wind.  I've tried to find a
>> write-up on how one goes about diagnosing ups problems like this but no
>> luck.
>>
>> I would appreciate any advice you have.  Thanks.