SMA SUNNY ISLAND 4.4M Operating Manual page 154

15 Troubleshooting
Event number Message, cause and corrective measures
6466 System failure
15 V voltage supply or 24 V voltage supply in the Multicluster Box is defective.
Corrective measures:
6502 to 6514
Overtemperature
Temperature of the transformer or the heat sink in the Sunny Island is too high (due to over-
load or ambient temperature).
Corrective measures:
6609
Overload
Battery voltage is too low.
Corrective measures:
6610
Overload
Battery voltage is temporarily too high.
Corrective measures:
6612
Overload
Excessive current has been applied to the internal transfer relay of a Sunny Island.
Corrective measures:
154 SI44M-80H-12-BE-en-10
• Contact the Service (see Section 19, page 189).
• Ensure that the Sunny Island is functional. For this, disconnect all AC sources and loads
from the Sunny Island and restart the Sunny Island.
• Reduce the total power of the loads, e.g. by staggering their use over time.
• Clean the fans (see Section 14.4, page 134).
• Charge the battery in emergency charge operation or using an external battery charger
(see Section 14.7, page 137).
• Ensure that DC loads are shed via a load-shedding contactor when the battery state of
charge is low.
• Ensure that all DC sources are correctly configured.
• Ensure that all SMA inverters are configured to the country data set for stand-alone grid
operation.
• Reduce the total power of the loads, e.g. by staggering their use over time.
• Connect the loads with very high power directly to the generator whenever possible or
connect the utility grid. Ensure that the generator is not overloaded.
• In off-grid systems, ensure that the country data sets of the SMA inverters are set to
stand-alone mode.
SMA Solar Technology AG
Operating Manual