EPS output on H3 Gen 2 hybrid inverter

[Jabberwock]

Hello
I have an 8kw H3 gen 2 inverter and 2 EP12 plus batteries in the garage - no PV as yet. After a bit of aggro connecting the Chint meter in the house to the inverter, the sysstem is working well Force Charging overnight and Self Use during the day and evening.
Àt the moment there is nothing connected to the EPS output except a cable from the inverter to an isolating switch. When checking it today I found there to a 400v voltage there as expected when the inverter was off grid. However it was still there (surely incorrectly) when the inverter was On Grid and working normally in Self Use. The only connections to the inverter are the 3 phase mains bi-directional, the RS485 from the Chint meter with CT clamps, the battery signal cable and the battery power cable plus this EPS output just to the isolating switch.
Any suggestions

[Jabberwock]

I think the answer to this is that I was looking at a on-line manual for the Gen 1 version. I need to access the installer menu ( maybe 2018?) and acess the menu somewhere to change from UPS to EPS. This will be a better option for me as I will need to change 2 switches to utilise the EPS output.