SMA SUNNY ISLAND 6.0H - Multicluster Contactor and Communication Errors

9 Troubleshooting SMA Solar Technology AG
60 SI60H-80H-BE-en-20 Operating Manual
W815 BoxQ5 1 Contactor Q5 in the
Multicluster Box is not
functioning correctly.
• Reset the off-grid system. For this,
disconnect the off-grid system and restart.
The configuration may be incorrect.
•
Start the QCG and reconfigure
multicluster operation (see installation
manual of the Sunny Island).
• Contact the SMA Service Line.
F816BoxQ7 2 Contactor Q7 in the
Multicluster Box is not
functioning correctly.
F 818 BoxPhsFail 4 One line conductor of a Sunny
Island is missing.
• Ensure that all circuit breakers of the
Sunny Island inverters in the Multicluster
Box are closed.
• Reset the off-grid system. For this,
disconnect the off-grid system and restart.
•
Search for the missing line conductor and
eliminate the error. For this, with loads
connected, measure the AC voltage
between each line conductor and
between the line conductors and the
neutral conductors. If an AC voltage
deviates from the nominal voltage by
±10%, the corresponding line conductor
is missing.
W 824 BoxQ4Overload 1 Multicluster Box signals an
error at contactor Q4.
• Contact the SMA Service Line.
W 840 eHZ1ComFail 1 Faulty communication
between the Meter Box and
the feed-in meter and
purchased electricity meter.
• Ensure that the optical probe is correctly
mounted.
• Ensure that the optical probe is correctly
connected.
W 841 eHZ2ComFail 1 Faulty communication
between the Meter Box and
the PV production meter.
W 842 ComBoxFail 1 Faulty communication
between the Sunny Island and
the Meter Box.
•
Ensure that the data cables are correctly
installed.
W 843 ComBoxWD 1 The Meter Box watchdog has
triggered.
• Contact the SMA Service Line.
W 844 eHZ1ProtFail 1 Data protocol of the feed-in
and purchased electricity
meter is unknown.
• Contact the SMA Service Line.
W 845 eHZ2ProtFail 1 Data protocol of the PV
production meter is unknown.
W846 eHzInFail 1 Optical probes have been
swapped.
• Swap the optical probe connections.
No. Name Level Cause Corrective measures