SMA SUNNY ISLAND 3.0M Operating Manual page 75

SMA Solar Technology AG
No. Name
F 811 Box24V
W 815 BoxQ5
F 816 BoxQ7
F 817 BoxQ9
F 818 BoxPhsFail
W 824 BoxQ4Overload
F 830 BoxQ2NotOpen
Operating Manual
Level Cause
4 Error in the 24 V voltage
supply of the MCBUBox:
24 V voltage supply in the Mul-
ticluster-Box is defective.
1 Error Q5 contactor: Contactor
Q5 in the Multicluster-Box is not
functioning correctly.
Exception: Load-shedding con-
tactor Q105 in the Multicluster-
Box 12 (MC-BOX-12.3-20) is
not functioning correctly.
2 Error Q7 contactor: Contactor
Q7 in the Multicluster-Box is not
functioning correctly.
4 Error Q9 contactor: Contactor
Q9 in the Multicluster-Box is not
functioning correctly.
Exception: Load-shedding con-
tactor Q109 in the Multicluster-
Box 12 (MC-BOX-12.3-20) is
not functioning correctly.
4 Box phase missing: One line
conductor of a Sunny Island in-
verter is missing.
1 Multicluster-Box signals an error
at contactor Q4.
2
Error: Contactor Q2 does not
open
Exception: In the NA-Box, the tie
switch Q202 does not open.
10 Troubleshooting
Corrective measures
• Contact the Service (see Section 16
"Contact", page 161).
• 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 Service (see Section 16
"Contact", page 161).
• Ensure that all circuit breakers of
the Sunny Island inverters in the
Multicluster-Box are closed.
1. 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.
2. Reset the off-grid system. For this,
disconnect the off-grid system and
restart.
• Contact the Service (see Section 16
"Contact", page 161).
• Contact the Service (see Section 16
"Contact", page 161).
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