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system fails, such as output short circuit, grid overvoltage / undervoltage, grid
overfrequency / underfrequency, high environmental temperature or internal
malfunction of the machine. The fault information will be displayed on the LCD
screen. Please refer to "5.4.2 Present fault" for detailed operation.
The causes of a fault can be identified based on the faults listed in Table
7-2. Proper analysis is recommended before contacting after-sales service.
There are 3 types of fault: alarm, protection and hardware fault.
1.TempSensorErr
Alarm
2.CommErr
Table 7-2 LCD Troubleshooting table
Definition:
Prompt detection of abnormal temperature
Possible causes:
1.Temperature Sensor socket connecter has poor
contact;
2.Temperature Sensor is damaged;
Recommended solutions:
1.Observe temperature display;
2.Switch off 3-phase working power supply and
then reboot the system;
3.Contact after-sales service personnel
Definition:
Communication inside inverter fails
Possible causes:
Terminal
communication wires have poor contact
Recommended solutions:
85
block
connecters
of
internal
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