No.
Name
Level Cause
Corrective measures
F 133 InvFrqLo
3
Inverter underfrequency Line
conductor L1
: An underfre-
quency has occurred at connec-
tion
AC1
of the master.
• Ensure that the Sunny Island is
functional. For this, disconnect all
AC sources and loads from the
Sunny Island and restart the
Sunny Island.
• Find the cause of the
underfrequency through
measurement and step-by-step
connection of the AC sources and
loads.
W 134 InvFrqLoSlv1
1
Inverter underfrequency Line
conductor L2
: An underfre-
quency has occurred at connec-
tion
AC1
of slave 1.
W 135 InvFrqLoSlv2
1
Inverter underfrequency Line
conductor L3
: An underfre-
quency has occurred at connec-
tion
AC1
of slave 2.
W 137 Derate
1
Derating due to tempera-
ture L1
: The master has re-
duced the battery charging cur-
rent due to overtemperature in
the Sunny Island.
• Reduce the total power of the
loads, e.g. by staggering their use
over time.
• Clean the fans (see Section 11.7,
• If the Sunny Island frequently
reduces its power, increase power
by replacing the Sunny Island with
a higher-powered version or by
installing additional Sunny Island
inverters.
W 138 DerateSlv1
1
Derating due to tempera-
ture L2
: slave 1 has reduced
the battery charging current due
to overtemperature in the Sun-
ny Island.
W 139 DerateSlv2
1
Derating due to tempera-
ture L3
: slave 2 has reduced
the battery charging current due
to overtemperature in the Sun-
ny Island.
F 141 InvVtgLo
2
Inverter undervoltage Line
conductor L1
: The voltage at
connection
AC1
of the master is
too low due to AC sources in
the system.
• Ensure that the Sunny Island is
functional. For this, disconnect all
AC sources and loads from the
Sunny Island and restart the
Sunny Island.
• Find the cause of the undervoltage
through measurement and step-by-
step connection of the AC sources
and loads.
W 142 InvVtgLoSlv1
1
Inverter undervoltage Line
conductor L2
: The voltage at
connection
AC1
of slave 1 is
too low due to AC sources in
the system.
W 143 InvVtgLoSlv2
1
Inverter undervoltage Line
conductor L3
: The voltage at
connection
AC1
of slave 2 is
too low due to AC sources in
the system.
10 Troubleshooting
SMA Solar Technology AG
Operating Manual
SI30M-44M-60H-80H-BE-en-33
54
Содержание SUNNY ISLAND 3.0M
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