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.
