UPS went off

[BillP]

This question was originally posted by Francisco on APC forums on 9/7/2016

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Hi, we have a Symmetra PX 20 (all in one). Last night, the city energy went off and and the UPS didn't went to battery power, all of my load went off.

There's "A phase synchronization fault no longer exists" last message at the log.

Here's the log in case you could help me to know what the real problem was. 

Thank you.

06-Sep-16 21:09:57 UPS: A phase synchronization fault no longer exists.
06-Sep-16 21:31:34 System: Email: Could not resolve ''.
06-Sep-16 21:30:54 System: Email: Could not resolve 'FA colon was expected following a number!'.
06-Sep-16 21:30:14 System: Email: Could not resolve 'FA colon was expected following a number!'.
06-Sep-16 21:29:33 System: Email: Could not resolve 'FA colon was expected following a number!'.
06-Sep-16 21:09:37 UPS: A phase synchronization fault exists.
06-Sep-16 21:28:53 System: Email: Could not resolve 'FA colon was expected following a numberp$KY colspan=
06-Sep-16 21:28:13 System: Email: Could not resolve 'FA colon was expected following a numberp$KY colspan=
06-Sep-16 21:27:32 System: Email: Could not resolve 'FA colon was expected following a numberp$KY colspan=
06-Sep-16 21:26:52 System: Email: Could not resolve 'FA colon was expected following a numberp$KY colspan=
06-Sep-16 21:08:48 UPS: An input voltage or frequency problem no longer prevents switching to bypass mode.
06-Sep-16 21:26:10 System: Email: Could not resolve '0'.
06-Sep-16 21:25:30 System: Email: Could not resolve ''.
06-Sep-16 21:24:50 System: Email: Could not resolve ''.
06-Sep-16 21:24:10 System: Email: Could not resolve '{!'.
06-Sep-16 21:08:42 UPS: No longer on battery power.
06-Sep-16 21:23:28 System: Email: Could not resolve 'The number was too small for a signed 16 bit integer!'.
06-Sep-16 21:22:48 System: Email: Could not resolve 'The number was too small for a signed 16 bit integer!'.
06-Sep-16 21:22:08 System: Email: Could not resolve 'The number was too small for a signed 16 bit integer!'.
06-Sep-16 21:21:27 System: Email: Could not resolve 'The number was too small for a signed 16 bit integer!'.
06-Sep-16 21:08:28 UPS: An input voltage or frequency problem prevents switching to bypass mode.
06-Sep-16 21:20:46 System: Email: Could not resolve '{w align="right"x w w align="right"FThe number was too small for a signed 8 bit integerF'.
06-Sep-16 21:20:06 System: Email: Could not resolve '{w align="right"x w w align="right"FThe number was too small for a signed 8 bit integerF'.
06-Sep-16 21:19:26 System: Email: Could not resolve '{w align="right"x w w align="right"FThe number was too small for a signed 8 bit integerF'.
06-Sep-16 21:18:46 System: Email: Could not resolve '{w align="right"x w w align="right"FThe number was too small for a signed 8 bit integerF'.
06-Sep-16 21:08:28 UPS: On battery power in response to an input power problem.
06-Sep-16 21:18:05 System: Email: Could not resolve ' valign="bottom" $8&A colon was expected following a number valign="bottom" '.
06-Sep-16 21:17:25 System: Email: Could not resolve ' valign="bottom" $8&A colon was expected following a number valign="bottom" '.
06-Sep-16 21:16:45 System: Email: Could not resolve ' valign="bottom" $8&A colon was expected following a number valign="bottom" '.
06-Sep-16 21:16:05 System: Email: Could not resolve ' valign="bottom" $8&A colon was expected following a number valign="bottom" '.
06-Sep-16 21:15:21 System: Email: Could not resolve '
'.
06-Sep-16 21:14:40 System: Email: Could not resolve 'last page!'.
06-Sep-16 21:14:00 System: Email: Could not resolve 'last page!'.
06-Sep-16 21:13:20 System: Email: Could not resolve 'last page!'.
06-Sep-16 21:12:36 System: Email: Could not resolve '
'.
06-Sep-16 21:11:56 System: Email: Could not resolve '
'.
06-Sep-16 21:11:16 System: Email: Could not resolve '
'.
06-Sep-16 21:10:36 System: Email: Could not resolve '
'.
06-Sep-16 21:09:50 System: Email: Could not resolve '
'.
06-Sep-16 21:09:10 System: Email: Could not resolve '
'.
06-Sep-16 21:08:30 System: Email: Could not resolve '
'.
06-Sep-16 21:07:50 System: Email: Could not resolve '
'.
06-Sep-16 21:06:47 UPS: Restored the local network management interface-to-UPS communication.
06-Sep-16 21:06:25 System: Network service started. System IP is 192.168.3.251 from manually configured settings.
06-Sep-16 21:06:25 System: Warmstart.
06-Sep-16 21:05:28 System: Email: Could not resolve '!'.
06-Sep-16 21:04:47 System: Email: Could not resolve 'T['.
06-Sep-16 21:04:06 System: Email: Could not resolve 'T['.
06-Sep-16 21:03:26 System: Email: Could not resolve 'T['.
06-Sep-16 21:02:46 System: Email: Could not resolve 'T['.
06-Sep-16 20:52:28 UPS: No longer on battery power.