Although fuel feed stops in a power outage, the pellets in the burn pot may continue to burn or smolder. The duration of this condition can vary with appliance design from a few minutes to an hour or more. The resulting smoke and hot gases rise, seeking the path of least resistance. Checked daily and cleaned periodically to keep air inlets open. Frequency of cleaning depends on fuel type, grade, and content.
Frequency depends on fuel and stove design.
Typically once or twice a week, but monthly in some new designs. On some stoves, simply a matter of moving a rod that scrapes the tubes inside the stove. May require professional service on others. Chambers located behind the fire chamber which prevent excess fly ash in the exhaust from exiting the stove. Cleaned with glass cleaner when the glass is completely cool on stoves with effective air wash systems.