► Have the heat exchangers been cleaned routinely?
► Are the pellets particularly long? (Longer than 1.5" ?). Long pellets don't feed as well as short pellets. Inconsistent feed = inconsistent heat. Some types of stoves are more sensitive to long pallets.
► Are the pellets particularly long? (same problem as above).
► Have your stove and chimney been professionally cleaned recently?
►Is your burn grate free from clinkers and ash?
►Is your combustion air turned up high enough? (Remember: if your pellets are burning with a "lazy, orange" flame it indicates insufficient combustion air)
► Are your pellets getting enough combustion air?
►If the problem persists test another brand of pellets
► A bag of pellets should have no more than about a 1/4 cup of sawdust in total. If you are seeing consistently more than this, it may indicate a pellet quality issue.
►If you see large amounts of coarse or clumping sawdust it indicated the bag has absorbed water.
► Never open the stove door while the fans are running.
►Never vacuum the appliance with a household vacuum cleaner.
► Have your stove technician check for improperly sealed venting.