SMA SUNNY ISLAND 8.0H - Questions on the Battery

SMA Solar Technology AG 10 Troubleshooting
Operating Manual SI80H-BE-BEN120810 61
The off-grid inverter only connects to the generator briefly?
The generator might be overloaded.
• Select parameter 234.03 GnCurNom and set it to 75% of the rated current of the
generator.
• If possible, reduce the power of the loads.
The set maximum generator voltage permitted might be too low.
• If you are a skilled person, select the 234.02 GNVtgMax parameter and set it to the
maximum generator voltage.
The minimum frequency set for the generator voltage might be too high.
• If you are a skilled person, select parameter 234.05 GnFrqMin and set it to the minimum
frequency of the generator voltage.
The permitted time 234.14 GnRvTm for reverse power might have been exceeded.
• Check whether warning W401 is registered in menu 420# Error history.
Hint: If a warning was entered, the warning icon " " is shown in the standard mode of the
Sunny Remote Control.
• Select the 540.02 GnAck parameter and set to Ackn. This acknowledges the generator
error.
The off-grid inverter does not connect to the external energy source, although the
limiting values for voltage and frequency are now complied with?
The off-grid inverter is switched with a hysteresis, i.e. the limiting values for connection do not
correspond to the limiting values for disconnection.
10.5.4 Questions on the Battery
A battery cell is defective?
• If you are a skilled person, remove the defective battery cell from the battery system.
This reduces the rated voltage of the battery by the voltage of the battery cell.
• In the QCG, set the current rated voltage of the battery under New Battery
(see Section 9.8"Replacing the Battery",page52).
The battery discharges even though the generator is running?
The off-grid inverter might not be connecting to the generator.
• Rectify the cause (see Section 10.5.3"Questions on the External Energy Source",page60).
The power of the loads might exceed the power of the generator.
The state of charge of the battery is not 100% after completion of a full charge?
The power requirements of the loads might have been so high before completion of the full
charge that the battery could not be charged 100%.
•If necessary, select the parameter 222.03 AptTmFul and set it to a longer period.