Too humid pellets.
Excessive quantity of pellets
in the tank.
Wind contrary to the outlet
flow.
Insufficient intake in the grate.
Recent change in the kind of
pellets used.
installation of the stove.
Check if the flue is clean.
Check the quality of the pellets.
Contact the authorized assistance
center.
Check the anti-wind terminal and/or
install it if necessary.
Check if the grate is correctly
positioned and if it is clean; check is
the air intake pipe is clean.
Contact the authorized assistance
center.
Contact the authorized assistance
center.
Malfunctioning of the fumes
fan.
The installation of the flue
was incorrectly performed.