CPS SCH100KTL-DO-600 - Page 93

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Table 6-3 Troubleshooting Alarm Codes
ALARM CODES
1.CommErr
Definition: Communication inside inverter fails
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. Switch off 3-phase working power supply and then
reboot the system;
3. Contact after-sales service personnel
2.ExtFanErr
Definition: Cooling fan failure by visual check
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. Switch off 3-phase power supply and then reboot the
system;
4. Contact after-sales service personnel
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. Switch off 3-phase work power supply and then reboot
the system;
4. Contact after-sales service personnel.