Pellet Stove Smoke Due to Venting Obstructions

To diagnose this cause, perform a visual inspection of the external chimney cap to check for blockages such as bird nests, debris, or heavy ice buildup. Internally, examine the exhaust venting path for significant horizontal runs or excessive elbows, and check the ash trap for heavy accumulation that would restrict the natural draft required to pull smoke out of the burn chamber.

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