Green Mountain Grills
Green Mountain Grills Pellet Grills & Smokers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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Auger Err
Display shows 'Auger Err' and pellets are not feeding into the firepot.
Auger Motor / Feed Jam Fault
Er1
Control board display shows Er1 and grill will not start or respond to button presses.
RTD Temperature Probe Open Circuit
Er2
Control board displays Er2 and grill will not start or shuts down shortly after startup.
RTD Temperature Probe Short Circuit
Er3
Display shows Er3 and grill shuts down or will not ignite.
Igniter / Hot Rod Failure Detected
Er4
Control board shows Er4 and grill stops heating or will not start.
Auger Motor / Feed System Fault
Er5
Display shows Er5 and grill shuts down or fails to ignite properly.
Combustion Fan / Draft Fan Fault
Er6
Control board displays Er6 and grill will not operate normally.
Control Board Internal Fault
Er7
Display shows Er7 and grill shuts down or will not start.
Low Voltage / Power Supply Fault
Fan Err
Display shows 'Fan Err' and grill will not ignite or maintain fire.
Combustion Fan Speed / Feedback Fault
Flame Out
Display shows 'Flame Out' or similar message and grill shuts down during a cook.
Loss of Combustion During Operation
High Temp
Display shows 'High Temp' or over-temperature warning and grill shuts down.
Over-Temperature Safety Shutdown
Ign Err
Display shows 'Ign Err' or ignition error and grill fails to light pellets.
Ignition Failure
Low Temp
Display shows 'Low Temp' or 'Lr' style warning and grill shuts down below target temperature.
Low Temperature / Failure to Maintain Heat
NoP
Display shows 'NoP' (no pellets) and grill shuts down or will not ignite.
Pellet Starvation Detected
Probe Err
Display shows 'Probe Err' or meat probe error and food probe readings are inaccurate or missing.
Meat Probe Sensor Fault
Temp Err
Display shows 'Temp Err' or temperature error and grill behaves unpredictably.
Temperature Sensing / Control Error
WiFi Err
Display or app shows WiFi error and grill cannot connect to the Green Mountain Grills app.
WiFi Module / Communication Fault
Symptom
Auger makes loud grinding or squealing noises during operation.
Auger Bearing / Gearbox Wear or Pellet Jam
Symptom
Buttons on the Green Mountain Grills controller are unresponsive or intermittent.
Keypad / Button Failure
Symptom
Combustion fan is very loud, rattling, or vibrating during operation.
Combustion Fan Imbalance or Bearing Wear
Symptom
Display is dim, flickering, or unreadable, but grill otherwise operates.
Controller Display Degradation
Symptom
Excessive white smoke and sooty buildup inside the grill.
Incomplete Combustion / Rich Burn
Symptom
Grease fire occurs in the cook chamber during a cook.
Grease Ignition / Fire Hazard
Symptom
Grease leaking from bottom of grill or out of seams instead of into the grease bucket.
Grease Management System Blockage
Symptom
Grill fan continues to run for an excessively long time after shutdown.
Cool-Down Cycle / Fan Control Issue
Symptom
Grill overshoots the set temperature by 50°F or more and runs hotter than expected.
Temperature Overshoot / Runaway Heat
Symptom
Grill powers on but will not ignite pellets; fan may run but no fire starts.
Failure to Ignite
Symptom
Grill shuts off unexpectedly during a cook without displaying an error.
Intermittent Power Loss
Symptom
Grill starts but then shuts down after a few minutes with no specific error code.
Early Flame-Out / Unstable Combustion
Symptom
Grill struggles to reach set temperature, especially in cold or windy conditions.
Insufficient Heat Output
Symptom
Grill temperature swings widely (±40–60°F) around the setpoint during a cook.
Temperature Fluctuation / Unstable Control
Symptom
Grill will not power on at all; no lights or display on the Green Mountain Grills controller.
No Power / Dead Controller
Symptom
Lid does not close evenly or rubs against the body when opening/closing.
Lid Hinge Misalignment
Symptom
Pellets back-burning into hopper, with smoke or heat rising into the hopper.
Backburn / Reverse Fire in Auger Tube
Symptom
Pellets in hopper appear swollen, clumped, or turning to sawdust; auger frequently jams.
Pellet Degradation / Moisture Contamination
Symptom
Rust forming on interior surfaces, grates, or firebox components.
Corrosion of Metal Components
Symptom
Smoke leaking heavily from lid edges and body seams instead of primarily from chimney.
Lid Seal / Body Leak
Symptom
Strong chemical or electrical burning smell from controller area during operation.
Electrical Overheating / Component Failure
Symptom
WiFi connection drops frequently or app loses control of the grill during cooks.
Intermittent WiFi Connectivity
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| Auger Err |
Display shows 'Auger Err' and pellets are not feeding into the firepot.
|
Auger Motor / Feed Jam Fault | View Details |
| Er1 |
Control board display shows Er1 and grill will not start or respond to button presses.
|
RTD Temperature Probe Open Circuit | View Details |
| Er2 |
Control board displays Er2 and grill will not start or shuts down shortly after startup.
|
RTD Temperature Probe Short Circuit | View Details |
| Er3 |
Display shows Er3 and grill shuts down or will not ignite.
|
Igniter / Hot Rod Failure Detected | View Details |
| Er4 |
Control board shows Er4 and grill stops heating or will not start.
|
Auger Motor / Feed System Fault | View Details |
| Er5 |
Display shows Er5 and grill shuts down or fails to ignite properly.
|
Combustion Fan / Draft Fan Fault | View Details |
| Er6 |
Control board displays Er6 and grill will not operate normally.
|
Control Board Internal Fault | View Details |
| Er7 |
Display shows Er7 and grill shuts down or will not start.
|
Low Voltage / Power Supply Fault | View Details |
| Fan Err |
Display shows 'Fan Err' and grill will not ignite or maintain fire.
|
Combustion Fan Speed / Feedback Fault | View Details |
| Flame Out |
Display shows 'Flame Out' or similar message and grill shuts down during a cook.
|
Loss of Combustion During Operation | View Details |
| High Temp |
Display shows 'High Temp' or over-temperature warning and grill shuts down.
|
Over-Temperature Safety Shutdown | View Details |
| Ign Err |
Display shows 'Ign Err' or ignition error and grill fails to light pellets.
|
Ignition Failure | View Details |
| Low Temp |
Display shows 'Low Temp' or 'Lr' style warning and grill shuts down below target temperature.
|
Low Temperature / Failure to Maintain Heat | View Details |
| NoP |
Display shows 'NoP' (no pellets) and grill shuts down or will not ignite.
|
Pellet Starvation Detected | View Details |
| Probe Err |
Display shows 'Probe Err' or meat probe error and food probe readings are inaccurate or missing.
|
Meat Probe Sensor Fault | View Details |
| Temp Err |
Display shows 'Temp Err' or temperature error and grill behaves unpredictably.
|
Temperature Sensing / Control Error | View Details |
| WiFi Err |
Display or app shows WiFi error and grill cannot connect to the Green Mountain Grills app.
|
WiFi Module / Communication Fault | View Details |
| – |
Auger makes loud grinding or squealing noises during operation.
|
Auger Bearing / Gearbox Wear or Pellet Jam | View Details |
| – |
Buttons on the Green Mountain Grills controller are unresponsive or intermittent.
|
Keypad / Button Failure | View Details |
| – |
Combustion fan is very loud, rattling, or vibrating during operation.
|
Combustion Fan Imbalance or Bearing Wear | View Details |
| – |
Display is dim, flickering, or unreadable, but grill otherwise operates.
|
Controller Display Degradation | View Details |
| – |
Excessive white smoke and sooty buildup inside the grill.
|
Incomplete Combustion / Rich Burn | View Details |
| – |
Grease fire occurs in the cook chamber during a cook.
|
Grease Ignition / Fire Hazard | View Details |
| – |
Grease leaking from bottom of grill or out of seams instead of into the grease bucket.
|
Grease Management System Blockage | View Details |
| – |
Grill fan continues to run for an excessively long time after shutdown.
|
Cool-Down Cycle / Fan Control Issue | View Details |
| – |
Grill overshoots the set temperature by 50°F or more and runs hotter than expected.
|
Temperature Overshoot / Runaway Heat | View Details |
| – |
Grill powers on but will not ignite pellets; fan may run but no fire starts.
|
Failure to Ignite | View Details |
| – |
Grill shuts off unexpectedly during a cook without displaying an error.
|
Intermittent Power Loss | View Details |
| – |
Grill starts but then shuts down after a few minutes with no specific error code.
|
Early Flame-Out / Unstable Combustion | View Details |
| – |
Grill struggles to reach set temperature, especially in cold or windy conditions.
|
Insufficient Heat Output | View Details |
| – |
Grill temperature swings widely (±40–60°F) around the setpoint during a cook.
|
Temperature Fluctuation / Unstable Control | View Details |
| – |
Grill will not power on at all; no lights or display on the Green Mountain Grills controller.
|
No Power / Dead Controller | View Details |
| – |
Lid does not close evenly or rubs against the body when opening/closing.
|
Lid Hinge Misalignment | View Details |
| – |
Pellets back-burning into hopper, with smoke or heat rising into the hopper.
|
Backburn / Reverse Fire in Auger Tube | View Details |
| – |
Pellets in hopper appear swollen, clumped, or turning to sawdust; auger frequently jams.
|
Pellet Degradation / Moisture Contamination | View Details |
| – |
Rust forming on interior surfaces, grates, or firebox components.
|
Corrosion of Metal Components | View Details |
| – |
Smoke leaking heavily from lid edges and body seams instead of primarily from chimney.
|
Lid Seal / Body Leak | View Details |
| – |
Strong chemical or electrical burning smell from controller area during operation.
|
Electrical Overheating / Component Failure | View Details |
| – |
WiFi connection drops frequently or app loses control of the grill during cooks.
|
Intermittent WiFi Connectivity | View Details |
No matching codes found
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