PELLET STOVE DIAGNOSTIC. Arrive and homeowner explains that they the pellet stove will turn on but cycle off after a short period of time. Usually after it shutting off about three times it will start and actually run. Findings: Today I find the Venturi tubes to the combustion housing to be clogged. After clearing the Venturi port and tube the stove cycles on with no issues. The stove needs Technician level maintenance recommend to either get Service Club Membership for 3 years worth of maintenance at $495 or for a single time maintenance at $169. Homeowner goes with one time maintenance plan. Maintenance- Verify operation, sweep flu, remove side doors, remove combustion motor and clean blades and housing, remove burn pot and scrape burnt on debris and clear Venturi holes, clear ignitor hole, remove refractor plates, sweep heat exchanger, inspect heat exchanger for abnormalities or cracks NONE FOUND, remove clean-out trap doors and vacuum out pellet debris, clear Venturi tubes, rein