26
www.danvex.fi
6.2 Troubleshooting procedures
lf the unit fails, please refer to the failure analysis and corresponding solutions provided in the
following content before contacting the supplier. lt may bе easy to troubleshoot. The following
tаblе does not include the content of external parts related to the unit.
ERROR
POSSIBLE CAUSES OF ERROR
THE CORRECT WAY
TO TROUBLESHOOT
Does not work or
poor performance
• blocked filter
• electric heater malfunction
• reduced airflow
• regeneration air temperature change
• air leak
• clean or replace the filter
• check whether the electric fuse is
damage
• check the pipe and the air volume
adjustment
• check the electric heater
• check panels and seals
Breaker or fuse failure
• the blower failure
• the rotor failure
• the electric heater failure
• check the blower and motor
• check the drive motor and belt
• check the electric heater
Unit does not start
• no control power
• control signal failure
• phase short circuit falt
• fuse control failure
• check the control fuse
• check external start/stop signal
• check the main fuse and phase
sequence
• check electrical parts
The rotor does not
work
• slipped belt
• broken or worn belt
• stuck rotor
• drive rotor failure
• check the tightness of the belt
• replace the drive belt
• check the center bearing and outer rim
• replace the entire gear motor
No dry air
• blocked filter
• fan failure
• phase failure
• blocked pipeline
• clean or replace the filter
• check the blower, motor and propeller
• check the main fuse and phase
sequence
• check the air volume adjustment and
duct
