Technical data

Chapter 4 Operation
33
4.4 Fault shutdown
The inverter will be shut down automatically when the
PV power generation system fails, such as output short
circuit, grid overvoltage / undervoltage, grid overfrequency /
underfrequency, high ambient temperature or internal
malfunction of the machine.
The causes of fault can be identified based on the faults
listed in Table 4-1. Proper treatment is recommended before
contacting after-sales service. There are mainly 3 types of
faults: alarm, protection and hardware fault.
Table 4-1 Troubleshooting Table
A
larm/
Protection/
Fault
Definition Possible causes
Recommended
solutions
Alarm
1、
TempSensorErr
Prompt detection of
abnormal
temperature
1、Temperature
Sensor socket
connecter has poor
contact;
2、Temperature
Sensor is
damaged;
1、Observe temperature
display;
2、Switch off 3-phase
working power supply
and then reboot the
system;
3、Contact after-sales
service personnel
2、
SPICommErr
Communication
inside inverter fails
Socket
connecters of
Inverter’s internal
communication
lines have poor
contact
1、Observe for 5
minutes and see
whether the alarm will
be eliminated
automatically;
2、Switch off 3-phase
working power supply
and then reboot the
system;
3、Contact after-sales
service personnel
3、
IntFanErr
Fan (invisible from
outside) inside
inverter is working
abnormally
1、Fan service life
has expired;
2、Fan socket
connecter has poor
contact.
1、Observe for 5
minutes and see
whether the alarm will
be eliminated
automatically;
2、Switch off 3-phase
work power supply and