15
Installation and Operating Instructions
8.2
Troubleshooting
Safety instructions listed in Chapter 1.2 should be observed!
Attention: If the impeller or motor is blocked allow 3 seconds for the
restart interval.
Causes
Solution
Fan doesn`t start
- No voltage
Mains voltage check
Check connection according to
wiring diagram
- Blocked impeller
Clear blockage, clean or replace
- Blocked motor
Contact Airflow Technical
Support
Fuse Tripping
- Winding is short-
circuiting the motor
Contact Airflow Technical
Support
- Damaged cable or
connector
Replace parts, if necessary
replace motor (Contact Airflow
Technical Support)
- Connected incorrectly
Check the connection, modify
Vibrations
- Contamination
Clean
- Mounting vibrancy
Check mounting, repair
Abnormal noises
- Grinding impeller
Clean impeller, replace
- Bearing damages
Contact Airflow Technical
Support
- Mechanical damages
Perform maintenance
Fan doesn’t
perform properly
- Insufficient air flow
Check inflow and outflow / keep
clear
- Wrong voltage
Check connection / modify
- Contamination
Clean
- Insufficient back-flow
Extend back-flow
