F35:Cavity
overtemperature
inverter is not
ventilated.
2. The ambient
temperature is too
high, exceeding
60℃.
3. Internal fan
working
abnormally
and whether the ambient temperature
exceeds the maximum allowable
ambient temperature range.
2. If the ventilation is poor or the
ambient temperature is too high,
please improve the ventilation and
heat dissipation conditions.
3. Contact the dealer or after-sales
service if both the ventilation and the
ambient temperature are normal.
BUS Overvoltage/
F36:BUS overvoltage
1. The PV voltage is
too high.
2. The sampling of
the inverter BUS
voltage is
abnormal.
Disconnect the AC output switch and DC
input switch, then connect them 5
minutes later. Contact the dealer or the
after-sales service if the problem persists.
PV Input
Overvoltage/
F37:PV input
overvoltage
The PV array
configuration is not
correct. Too many PV
panels are connected
in series in the PV
string.
Check the serial connection of the PV
array. Make sure that the open circuit
voltage of the PV string is not higher than
the maximum operating voltage of the
inverter.
PV Continuous
Hardware
Overcurrent/
F38:PV continuous
hardware
overcurrent
1. The PV
configuration is
not proper.
2. The hardware is
damaged.
Disconnect the AC output switch and DC
input switch, then connect them 5
minutes later. Contact the dealer or the
after-sales service if the problem persists.
PV Continuous
Software
Overcurrent/
F39:PV continuous
software overcurrent
1. The PV
configuration is
not proper.
2. The hardware is
damaged.
Disconnect the AC output switch and DC
input switch, then connect them 5
minutes later. Contact the dealer or the
after-sales service if the problem persists.
F40:PV string
reversed (string 1 -
string 16)
The PV strings are
connected reversely.
Check whether the PV1 and PV2 strings
are connected reversely.
1. When a generator is connected to the