Frequently Asked Questions (Faqs); Questions Regarding The Sunny Island; Questions Regarding The Battery - SMA SUNNY ISLAND 4.4M Operating Manual

SMA Solar Technology AG
Requirement:
☐ The cause of the error must be eliminated.
Procedure:
1. Select Device > Operation.
2. Set Reset operating data to Reset operation inhibition.
3. Start the system (see Section 10.2, page 124).
15.4

Frequently Asked Questions (FAQs)

15.4.1 Questions Regarding the Sunny Island
Why is the Sunny Island not switching off even though I have opened the load-break switch of
the battery fuse?
The Sunny Island may still be supplied from the AC side.
• Switch off all AC sources and disconnect them from the Sunny Island.
Why is the Sunny Island not switching to energy-saving mode?
Another function might have a higher priority than energy saving mode, e.g., equalization charge or full charge.
After automatic disconnection in battery protection mode, the Sunny Island can no longer be
started?
• Charge the battery only when the Sunny Island cannot be switched on (see Section 14.7 "Charging the Battery
After Automatic Shutdown in Off-Grid Systems (Emergency Charge Mode)", page 137).
– Switch off all loads.
– If there is a generator in the system, start the generator manually. When doing so, observe the warm-up time
of the generator. Five minutes without charge current can result in disconnection of the Sunny Island inverter.
– If sufficient power is available from the generator or the AC sources in the stand-alone grid, e.g., sufficient
solar irradiation for PV inverters, switch the Sunny Island on. AC sources in the stand-alone grid can start
feeding in electric current only once the Sunny Island has been started and is in operation.

15.4.2 Questions Regarding the Battery

What happens if a battery is defective?
• Remove the defective battery cell from the battery system. This reduces the rated voltage of the battery by the
voltage of the battery cell.
• Start the installation assistant on the inverter user interface.
• Select [Save and next] up to the step Battery configuration.
• Select the button [New battery configuration].
• Set the parameter Voltage to the actual rated voltage of the battery (see Section 14.9 "Replacing the Battery",
page 140).
Operating Manual
15 Troubleshooting
SI44M-80H-12-BE-en-10 175