Green Mountain Grills Early Flame-Out / Unstable Combustion

Grill starts but then shuts down after a few minutes with no specific error code.

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Possible Causes

Low pellet feed rate, Wet or crumbly pellets, Excessive ash choking firepot, Weak combustion fan

How to Fix / Troubleshooting

Safety first: Allow the grill to cool and disconnect power before cleaning.

  • Use fresh pellets: Empty the hopper and refill with dry, high-quality pellets. Avoid pellets stored in damp conditions.
  • Deep clean firepot: Remove all ash and clinkers from the firepot and surrounding area. Clean at least every 2–3 cooks.
  • Inspect combustion fan: Ensure the fan spins freely and runs at full speed. Clean blades and housing.
  • Check for air leaks: Make sure the lid closes fully and that there are no large gaps around the door or body seams.
  • Monitor startup: Watch the first 10–15 minutes of a cook to confirm a stable flame and consistent pellet feed.
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Repair Difficulty

Easy 2/5

Required Part

Combustion Fan
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