Maintenance&Trouble Shooting
27
Trouble-Shooting List
Type of Fault
Code
Name Description Recommend Solution
PvAfciFaultA03
A33
A34
Pv2AbnormalFault
Pv1AbnormalFault
Compared with previous
voltage and other PV
voltages, this PV voltage
suddenly becomes higher
or lower.
• Check if PV modules are partially
blocked or cells are damaged.
• Check if PV cables and terminals
broken or loose connection, then repair
it.
A16
A17
PVs1ReverseFault
PVs1ReverseFault
PV(+) and PV(-) reversed
Connection
• Check whether PV(+) and PV(-)
connection reversed or not.
If reversed, make correction.
A04
A05
PV current arcing
• Check whether the PV cables and
wiring terminals are broken or
connection abnormal, and correct them.
• If the fault occurs continuously and
frequently, contact the local distributors
for help.
IsoFaultA02
PvConnectFault
PV Fault
DC Fault
A01
The actual PV connection
type (independent,
parallel) different from
setup.
• Set PV connection type according to
the actual PV connection type.
ISO check among PV
panels/ the wires to the
ground is abnormal.
• Check whether the PV modules and its
wiring are immersed in water and
whether the insulation is damaged, and
then make corrections.
• If the fault occurs continuously and
frequently, contact the local distributors
for help.
PVs2OverVoltFault
Pvs1OverVoltFault
PV Voltage over, beyond
the reasonable range.
• Reconfiguration of PV strings, reduce
the PV number of a PV string to reducing
inverter PV input voltage.
• Contact local distributors for
suggestion.
E01
E02
Pvs2HwOverCurrFault
Pv1HwOverCurrFault
PV current over, triggered
the hardware protection
circuit
• Power off, then restart
• If fault still occurs continuously and
frequently, please ask help for local
distributors.
E13
E14
PVs2SwOverCurrFault
PVs1SwOverCurrFault
PV current over, triggered
the software protection
circuit
• Power off, then restart
• If fault still occurs continuously and
frequently, please ask help for local
distributors.