Control panel displays ERR4 and grill shuts down during cook

Safety first: Unplug the grill and allow it to cool before cleaning the fire pot or working near the auger.

• 1. Check fuel supply:
  • Open the hopper and verify it is at least 1/3 full of dry, hardwood pellets.
  • Break up any pellet bridges (arched pellets stuck above the auger) with a clean, dry tool.
  • Remove any clumped or swollen pellets and discard.
• 2. Clean the fire pot:
  • Remove grates, drip pan, and heat diffuser.
  • Vacuum out the fire pot and surrounding area with a cool-ash vacuum only.
  • Ensure the air holes in the fire pot are not blocked.
• 3. Verify auger operation:
  • With the grill cool and empty of pellets, plug in and start on SMOKE or LOW.
  • Look into the fire pot to see if pellets begin to drop after a minute or two.
  • If no pellets feed, listen for auger motor noise. A loud hum with no movement suggests a jam.
• 4. Check combustion fan:
  • During startup, confirm the combustion fan in the hopper area is spinning.
  • Clean dust and debris from the fan blades and intake vents.
• 5. Clear auger jam (if needed):
  • Unplug the grill and remove all pellets from the hopper.
  • Access the auger by removing the hopper cover and auger motor mounting plate.
  • Pull the auger shaft out and scrape off compacted pellets.
  • Reassemble and test.