SMA SI 3.0-11 - Manual (Page 47)

SMA Solar Technology AG 9 Troubleshooting
Operating Manual SI30M-44M-60H-80H-BE-en-30 47
F 121 InvVtgHi 3 An overvoltage has occurred at
connection 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 overvoltage
through measurement and
step-by-step connection of the AC
sources and loads.
W 122 InvVtgHiSlv1 1 An overvoltage has occurred at
connection AC1 of slave 1.
W 123 InvVtgHiSlv2 1 An overvoltage has occurred at
connection AC1 of slave 2.
F 129 InvFrqHi 3 An overfrequency has occurred at
connection 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
overfrequency through
measurement and step-by-step
connection of the AC sources and
loads.
W 130 InvFrqHiSlv1 1 An overfrequency has occurred at
connection AC1 of slave 1.
W 131 InvFrqHiSlv2 1 An overfrequency has occurred at
connection AC1 of slave 2.
F 133 InvFrqLo 3 An underfrequency has occurred
at connection 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 An underfrequency has occurred
at connection AC1 of slave 1.
W 135 InvFrqLoSlv2 1 An underfrequency has occurred
at connection AC1 of slave 2.
W 137 Derate 1 The master has reduced the battery
charging current due to
overtemperature in the
Sunny Island.
• Clean the fans (see Section 10.7
"Cleaning the Fans", page 77).
• Reduce the total power of the
loads, e.g., by staggering their use
over time.
•
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 Slave 1 has reduced the battery
charging current due to
overtemperature in the
Sunny Island.
W 139 DerateSlv2 1 Slave 2 has reduced the battery
charging current due to
overtemperature in the
Sunny Island.
No. Name Level Cause Corrective measures