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PV volt high
PV voltage is too high
Please check if the PV string voltage is
within the inverter specification. If
string voltage is within range and this
fault persists, contact your supplier.
Hard over curr
Hardware level over current protection
triggered
Restart the inverter. If the fault per-
sists, contact your supplier.
Neutral fault
Voltage between N and G is greater
than 30V
Ensure the neutral wire is connected
correctly.
PV short circuit
Short circuit detected on PV input
Disconnect all PV strings from the in-
verter. If the error persists, contact
Temperature
fault
Heat sink temperature too high
Install the inverter in a place with good
ventilation and no direct sunlight. If the
installation site is okay, check if the
NTC connector inside the inverter is
loose.
Inverter detected DC bus voltage lower
than PV input voltage
Restart the inverter, if the fault per-
sists, contact your supplier.
Inconsistent
Sampled grid voltage values of DSP and
M8 microprocessor are inconsistent
M8 Rx fault
M8 microprocessor fails to receive data
from DSP
Para Comm
error
Parallel communication abnormal
1. Check whether the connection of
the parallel cable is loose. Connect
the parallel cable correctly.
2. Ensure the PIN status of the CAN
communication cable from the first
to the end inverter is connected
Para master loss
No Master in the parallel system
1. If a Master has been configured in
the system, the fault will automati-
cally be removed after the Master
works.
2. If a Master has not been configured
and there are only Slaves in the
system, set the Master first.
Note: For a single-unit system, the
role of the inverter should be set as
Para rating Diff
Rated power of parallel inverters are in-
consistent
Confirm that the rated power of all in-
verters is the same.
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