Fronius Symo Hybrid 3.0-3-S, Operating Instructions Manual

Page: 26 / 140

Restrictions in
emergency power
mode In emergency power mode, some electrical appliances cannot function properly as start-
ing currents are too high (e.g. fridges and freezers). It is recommended to switch off non-
essential consumers during emergency power mode.
Switching from grid-connected operation to emergency power mode takes a little while.
For this reason, the battery system with emergency power function cannot be used as an
uninterruptible power supply, for example for computers.
If no energy is available from the battery or the solar modules during emergency power
mode, this mode is automatically ended, irrespective of whether power is available from
the public grid or not. If sufficient energy becomes available from the solar modules once
again, emergency power mode starts again automatically.
If consumption is too high, emergency power mode is interrupted and status code "143 -
Emergency power overload" appears. The maximum power in emergency power mode
according to the technical data must be observed!
Backup power
and energy sav-
ing mode If the inverter is operating in backup power mode, energy saving mode is automatically
active. Under the following conditions, the battery and the inverter are switched to energy
saving mode after a waiting time of 8 - 12 minutes:
-
The battery is discharged to the minimum state of charge and no energy is coming
from the solar modules.
- The inverter is in an error state that is not acknowledged automatically (e.g. multiple
overload).
- The inverter is set to energy saving mode (standby mode) using the display setting.
If the battery and inverter are in energy saving mode, the system is reactivated by the
following:
-
Enough energy is available from the solar modules.
- The public grid is functioning again.
- The battery's POWER switch is switched off and on.
More information on energy saving mode can be found in chapter Energy saving mode
on page 27
Fronius Ohmpilot
and backup
power mode The Fronius Ohmpilot is not suitable for backup power mode. If a Fronius Ohmpilot is
used, it should be installed outside of the backup power circuit (see
Operating mode -
Inverter plus battery, Ohmpilot and emergency power function on page 22 ).
NOTE!
Risk from an active Ohmpilot in backup power mode.
This may result in loss of the backup power supply.
▶
Never turn on boost mode on the Ohmpilot.
▶
Switch off the automatic circuit breaker on the Fronius Ohmpilot (if fitted).
▶
Before a power outage occurs, any function that would exceed the power limits in
backup power mode must be disabled.
Disable functions that would exceed the power limits in backup power mode:
1
Set measuring of heating rod to manual on the Ohmpilot (under "General - General
Settings - Heating 1 - Manual").
2
Disable the "Legionella prevention (h)" and "Adapt day curve" settings (under "Gen-
eral - General Settings - Heating 1").
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