Ok, I dug up a fairly recent posting from Mike Holten. I`m sure some of us recall this one.
"3 buttons exposed:
1 LFF low fuel feed; this setting controls the cycle rate of the top auger when the unit is set on a heat range of 1 or 2. it does not affect the stove at heat range 3 or higher. the LFF settins we choose are based on consumption rates using average sized pellets meaning an average length of 3/4 inches (ish) now not all pellets are sized this way some smaller some longer on average so the settings can be adjusted to compensate (we usually wish to advise on that based on what an owner gives us on average time of a bag’s burn duration on h/r 1) ideally to allow the stove to keep a physical fire without having to relight each batch from coals which is a dirty burn)
2. LBA low burn air; this setting determines the speed of the exhaust/combustion blower on the same 1 and 2 heat settings, no effect on 3 and higher. as with the LFF we determine what the best air setting is based on typical pellets and anormal setup. we may adjust this with info from the owner in cases of high altitude, odd hookups and such. too much air causes a “starve/smother too little and it “loads up” and burns pelets slower than they arrive causing excessive ash buildup clinkering and sooted glass
3. AOT air on temp; the air on temp button controls the temp related functions such as “proof of fire” blower on and off, and others. this setting shold never be on anything but 1.
there ya go "
"3 buttons exposed:
1 LFF low fuel feed; this setting controls the cycle rate of the top auger when the unit is set on a heat range of 1 or 2. it does not affect the stove at heat range 3 or higher. the LFF settins we choose are based on consumption rates using average sized pellets meaning an average length of 3/4 inches (ish) now not all pellets are sized this way some smaller some longer on average so the settings can be adjusted to compensate (we usually wish to advise on that based on what an owner gives us on average time of a bag’s burn duration on h/r 1) ideally to allow the stove to keep a physical fire without having to relight each batch from coals which is a dirty burn)
2. LBA low burn air; this setting determines the speed of the exhaust/combustion blower on the same 1 and 2 heat settings, no effect on 3 and higher. as with the LFF we determine what the best air setting is based on typical pellets and anormal setup. we may adjust this with info from the owner in cases of high altitude, odd hookups and such. too much air causes a “starve/smother too little and it “loads up” and burns pelets slower than they arrive causing excessive ash buildup clinkering and sooted glass
3. AOT air on temp; the air on temp button controls the temp related functions such as “proof of fire” blower on and off, and others. this setting shold never be on anything but 1.
there ya go "