DOCR-070645-E
Page 84 of 102
Table 6.2 - LCD Troubleshooting Table
Alarm
1.CommErr
Definition:
Communication inside inverter failed
Possible causes:
Terminal block connecters of internal communication
wires have poor contact
Recommended solutions:
1.Observe for 5 minutes and see whether the alarm will
be eliminated automatically;
2.Turn off both AC and DC disconnect for 2 minutes and
reset the inverter;
3.Contact after-sales service personnel if the error
persists
2.ExtFanErr
Definition:
Cooling fan failure
Possible causes:
1.Fan is blocked;
2.Fan service life has expired;
3.Fan socket connecter has poor contact.
Recommended solutions:
1.Observe for 5 minutes and see whether the alarm will
be eliminated automatically;
2.Check for foreign objects on fan blades;
3.Turn off both AC and DC disconnect for 2 minutes and
reset the inverter;
4. Contact after-sales service personnel if the error
persists
3. IntFanErr
Recommended solutions:
1.Observe for 5 minutes and see whether the alarm will
be eliminated automatically;
2.Check for foreign objects on fan blades;
3.Turn off both AC and DC disconnect for 2 minutes and
reset the inverter;
4. Contact after-sales service personnel if the error
persists