AshKontrol is an automatic burning-pot cleaning system.
There are several phases to the cleaning system:
when the boiler stove starts up, the two “combs” forming the burning pot swing up and down so as to “break up” any built-up ash. A

After this, the burning pot opens up fully to drop the ash into the special compartment so that the burning pot is then clean and ready to be lit. B

While it is operating (even when hot embers are in the burning pot), the “combs” carry out their swinging movement at intervals to prevent ash deposits from building up. When the burning pot is completely shut, a sufficient passage of air is ensured for pellet combustion; C

Post-combustion, the air is blown in over the flame through special holes.