Smart-UPS RT 10000 XL randomly switched to bypass and back

[Anonymous user]

Hello,

Our UPS switched without user interaction to bypass and back.

We are a little worried, because there is no obvious explanation for it.

The only thing what is strange is the Vmin value.
In the last three days (log end) it occasionally shows 0.0.

Eventlog:

06/22/2020 11:41:14 Device UPS: Restored the local network management interface-to-UPS communication. 0x0101
06/22/2020 11:41:12 System Network service started. System IP is xxx.xxx.xxx.xxx from DHCP server xxx.xxx.xxx.xxx with 8990 second lease. 0x0007
06/22/2020 11:40:48 System Network Interface restarted. 0x0002

06/22/2020 11:31:42 Device UPS: Returned from bypass in response to the UPS front-panel, a user-initiated software command, or transition to critical bypass. 0x01B4

06/22/2020 11:29:34 Device UPS: In bypass in response to the UPS front-panel or a user-initiated software command, typically for maintenance. 0x011C

Datalog:

Smart-UPS RT 10000 XL
Date Time Vmin Vmax Vout Iout %Wout Freq %Cap Vbat TupsC %VAout
06/22/2020 12:20:50 233.2 234.7 230.4 7.56 16.0 50.01 100.0 218.1 25.7 16.0
06/22/2020 12:10:49 233.2 234.7 230.4 7.29 16.0 49.99 100.0 218.1 25.7 16.0
06/22/2020 12:00:49 233.2 233.2 230.4 7.29 16.0 49.98 100.0 218.1 25.7 16.0
06/22/2020 11:50:49 233.2 233.2 230.4 7.29 16.0 50.02 100.0 218.1 25.7 16.0
06/22/2020 11:37:14 0.0 233.2 230.4 7.56 17.0 50.00 100.0 218.1 25.7 16.0
06/22/2020 11:27:14 233.2 233.2 230.4 7.29 16.0 50.01 100.0 218.1 26.3 17.0
06/22/2020 11:17:14 231.8 233.2 230.4 7.29 17.0 50.00 100.0 218.1 25.7 16.0
06/22/2020 11:07:14 231.8 233.2 230.4 7.56 16.0 49.98 100.0 218.1 25.7 16.0
06/22/2020 10:57:14 233.2 233.2 230.4 7.56 16.0 49.95 100.0 217.0 25.7 17.0
06/22/2020 10:47:14 0.0 233.2 230.4 7.29 16.0 49.98 100.0 218.1 25.7 16.0
06/22/2020 10:37:14 230.4 231.8 230.4 7.29 16.0 50.00 100.0 218.1 25.7 16.0
06/22/2020 10:27:14 230.4 231.8 230.4 7.29 16.0 50.00 100.0 218.1 25.7 16.0
06/22/2020 10:17:14 231.8 233.2 230.4 7.56 16.0 49.97 100.0 218.1 0.0 17.0
06/22/2020 10:07:14 230.4 233.2 230.4 7.29 16.0 49.97 100.0 218.1 25.7 16.0
06/22/2020 09:57:14 231.8 231.8 230.4 7.29 16.0 49.97 100.0 218.1 25.7 16.0
06/22/2020 09:47:14 231.8 233.2 230.4 7.02 15.0 49.98 100.0 218.1 25.7 16.0
06/22/2020 09:37:14 231.8 233.2 230.4 7.29 15.0 50.00 100.0 218.1 25.7 16.0
06/22/2020 09:27:14 231.8 233.2 230.4 7.29 16.0 50.02 100.0 218.1 25.7 16.0
06/22/2020 09:17:14 231.8 231.8 230.4 7.29 15.0 50.01 100.0 218.1 25.7 16.0
06/22/2020 09:07:14 231.8 231.8 230.4 7.29 15.0 49.99 100.0 218.1 25.7 16.0
06/22/2020 08:57:14 230.4 231.8 230.4 7.29 16.0 50.00 100.0 218.1 26.3 16.0
06/22/2020 08:47:14 231.8 233.2 230.4 7.29 15.0 50.00 100.0 218.1 26.3 16.0
06/22/2020 08:37:14 231.8 233.2 231.6 7.29 15.0 50.00 100.0 218.1 25.7 16.0
06/22/2020 08:27:14 231.8 233.2 230.4 7.29 15.0 50.03 100.0 218.1 25.7 16.0
06/22/2020 08:17:14 231.8 233.2 230.4 7.02 15.0 49.99 100.0 218.1 25.7 16.0
06/22/2020 08:07:14 231.8 233.2 230.4 7.29 15.0 50.00 100.0 218.1 26.3 16.0
06/22/2020 07:57:14 231.8 233.2 230.4 7.29 15.0 50.02 100.0 218.1 25.7 16.0
06/22/2020 07:47:14 231.8 231.8 230.4 7.29 16.0 49.97 100.0 218.1 26.3 16.0
06/22/2020 07:37:14 231.8 233.2 230.4 7.29 15.0 50.02 100.0 218.1 25.7 16.0
06/22/2020 07:27:13 231.8 231.8 230.4 7.29 15.0 50.00 100.0 218.1 25.7 16.0
06/22/2020 07:17:13 231.8 233.2 230.4 7.29 15.0 50.01 100.0 218.1 26.3 16.0
06/22/2020 07:07:13 0.0 231.8 230.4 7.29 15.0 50.01 100.0 218.1 26.3 16.0
06/22/2020 06:57:13 231.8 233.2 230.4 7.29 15.0 49.97 100.0 217.0 26.3 16.0

What is the possible cause for this behavior?

Thanks for your help.