SMA SUNNY ISLAND 4.4M Operating Manual page 162

15 Troubleshooting
Event number Message, cause and corrective measures
7718
Interference device
Transfer relay does not open at line conductor L1 / L2 / L3. A bypass switch may have
bridged the internal transfer relay.
7719 Plausibility check MC-BOX failed
Plausibility check on the contactors in the Multicluster-Box has failed.
Corrective measures:
8003
Derating occurred
The inverter at L1 / L2 / L3 reduces the battery charging current due to overheating.
Corrective measures:
8101 to 8104 Communication disturbed
The cause must be determined by the Service.
Corrective measures:
8609
A slave has a fault status, cluster is stopped
A slave has a fault status, cluster is stopped.
Corrective measures:
8610 to 8611
Error in the cluster configuration
The addresses of the slaves in the cluster are incorrect.
Corrective measures:
162 SI44M-80H-12-BE-en-10
• Ensure that the bypass switch is in the position for operation with Sunny Island.
• Ensure that the connections AC1 and AC2 are not bridged.
• Contact the Service (see Section 19, page 189).
• Reduce the total power of the loads, e.g. by staggering their use over time.
• Clean the fan (see Section 14.4, page 134).
• If the inverter reduces its power often, increase the power (install a more powerful
device type or more inverters of the same type).
• Contact the Service (see Section 19, page 189).
• Read off the pending and logged warnings and errors and eliminate the causes.
• Contact the Service (see Section 19, page 189).
• Change the addresses of the slaves in the cluster (see Section 14.8, page 139)
SMA Solar Technology AG
Operating Manual