wattsonic 4.0K-25A-3P, Руководство пользователя

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Error Message Description Solution
ISO Over Lim¬itation
Inverter detects that DC side's insu-
la¬tion impedance to the ground is
too low.
1. Check whether PV panels, cables, and
con¬nectors are waterlogged or damaged.
2. Use a megger to measure ground resis-
tance on the DC sidel, and the measured
value should not be less than 500 KΩ.
3. Seek help from the installer or manufac-
ture.
GFCI Fault
The inverter detects that the ground
leakage current exceeds the limita-
tion.
1. Restart the inverter.
2. Check whether the PV panels, cables, and
connectors are waterlogged or damaged.
3. Seek help from the installer or manufac-
ture.
PV Over Volt¬age
PV input voltage exceeds the upper
limit.
Reduce the number of PV panels to make
sure that the open-circuit voltage of each
string is lower than the inverter maximum
allowed input voltage.
Bus Voltage Fault The voltage of bus circuit is too high
1. Check whether the input voltage exceeds
the limit.
2. Restart the inverter.
3. Seek help from the installer or manufac-
ture.
Inverter Over Tem-
perature
The inverter detects its high internal
temperature
1.Check whether the inverter installation
location is well ventilated.
2.Try to turn it off for a while, and then pow-
er it back on when it cools down.
3.Seek help from the installer or manufac-
ture.
N - P E C h e c k
Fault The ground cable is losse or in poor
connection Check whether the ground cable wiring is
cor¬rect.
SPI Fault
Internal communication got failed.
Caused by a strong external magnetic
field etc. 1. Restart the inverter.
2. Seek for help from the installer or manu-
facture.