Fronius Energy Package, Operating Instructions Manual, Page: 35 / 148

* Note for systems with backup power switchover with Fronius Symo Hybrid and
BYD Battery-Box Premium HVM 8.3:
If there is a power failure, there is no energy available from the PV system and
the battery has a low state of charge (SOC typically < 20%), the system may no
longer be able to switch to backup power mode.
Read this document and the Installation Instructions for the Fronius Symo Hy-
brid and the third-party battery before installation and commissioning.
All Fronius documents are available at the following address:
www.fronius.com/photovoltaics/infocentre/tech-support/how-to-install
Obsolete software states may lead to incompatibilities between the inverter and
the battery. If a corresponding message is displayed:
- Update inverter software - see Services – Firmware update on page 89
- Update battery software - see the battery documentation
The documentation for the BYD Battery-Box Premium is enclosed with the third-
party battery, or you can acquire it from the third-party manufacturer.
IMPORTANT!
To ensure reliable operation with a BYD Battery-Box Premium HVM, the following
switch-on sequence for the system must always be observed.
ON
OFF
1
1
Set the DC disconnector to the "Off"
switch position. Turn off the automatic
circuit breaker.
2
Switch on the battery.
35
EN