SMA SI 3.0-11 - Manual (Page 63)

SMA Solar Technology AG 9 Troubleshooting
Operating Manual SI30M-44M-60H-80H-BE-en-30 63
W 815 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 the
Sunny Island inverter installation manual).
• Contact the SMA Service Line.
F 816 BoxQ7 2 Contactor Q7 in the
Multicluster Box is not
functioning correctly.
F 817 BoxQ9 4 Contactor Q9 in the
Multicluster Box is not
functioning correctly.
F 818 BoxPhsFail 4 One line conductor of a
Sunny Island inverter 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 with 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 with 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.
W 845 eHZ2ProtFail 1 Data protocol of the PV
production meter is unknown.
W 846 eHzInFail 1 Optical probes have been
swapped.
• Swap the optical probe connections.
No. Name Level Cause Corrective measures