Napoleon

Napoleon 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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AUG
Display shows AUG error and pellets stop feeding
Auger Stall or Feed Fault
Er1
Control display shows Er1 and grill will not start ignition sequence
RTD Temperature Probe Open Circuit
Er2
Control display shows Er2 and grill shuts down or will not start
RTD Temperature Probe Short Circuit
Er3
Display shows Er3 and grill will not ignite or shuts down shortly after start
Igniter Circuit Failure
Er4
Display shows Er4 and grill stops feeding pellets or shuts down
Auger Motor Circuit Failure
Er5
Display shows Er5 and grill shuts down during cook
Combustion Fan Circuit Failure
Er6
Display shows Er6 and grill will not maintain temperature
Grill Lid Open or Low Temperature Safety Fault
Er7
Display shows Er7 and grill shuts down with very high temperature reading
Over-Temperature Safety Shutdown
Er8
Display shows Er8 and grill will not start or shuts down shortly after startup
Flame-Out Detected During Startup
Er9
Display shows Er9 and grill becomes unresponsive or buttons do not work correctly
Control Panel Keypad or Interface Fault
FAN
Display shows FAN error and grill shuts down or will not start
Combustion Fan Speed or Feedback Fault
H1
Display shows H1 and grill temperature reading is abnormally high at startup
High Temperature Detected at Startup
IGN
Display shows IGN error and pellets feed but do not ignite
Ignition Timeout Fault
L1
Display shows L1 and grill temperature reading is abnormally low or negative
Low Temperature or Sensor Range Fault
PEL
Display shows PEL error and grill shuts down with fire-out condition
Pellet Supply or Fuel Starvation Fault
PROB
Display shows PROB error and meat probe temperature does not read correctly
Meat Probe Sensor Fault
WiFi
Display shows WiFi error or app cannot connect to grill
Wi-Fi Module or Connectivity Fault
Symptom
Display is dim, hard to read, or segments missing
Display Backlight or Segment Failure
Symptom
Display resets or flickers when igniter or fan turns on
Voltage Drop or Electrical Interference
Symptom
Display works but temperature reading is obviously wrong (e.g., 500°F at room temperature)
Temperature Sensor Calibration Error
Symptom
Excessive vibration or rattling noises during operation
Loose Panels or Imbalanced Rotating Components
Symptom
Excessive white smoke and strong raw smoke smell during cook
Incomplete Combustion
Symptom
Grease fire in cook chamber during operation
Grease Ignition
Symptom
Grease leaking from front or sides of grill cabinet
Grease Management System Overflow
Symptom
Grill never reaches high temperatures (e.g., cannot exceed 350°F)
Insufficient Heat Output
Symptom
Grill powers on but will not start ignition cycle when START button is pressed
Start Circuit or Safety Interlock Fault
Symptom
Grill starts but shuts down after 5–15 minutes with no error code
Intermittent Flame-Out
Symptom
Grill temperature overshoots setpoint by more than 50°F and fluctuates widely
Temperature Control Instability
Symptom
Grill will not power on at all, no lights or display
No AC Power to Control Board
Symptom
High-pitched squeal or rattling from rear of grill during operation
Combustion Fan Bearing Wear or Imbalance
Symptom
Lid does not close evenly or there is visible gap at front or sides
Lid Misalignment or Hinge Deformation
Symptom
Loud grinding or squealing noise from hopper area
Auger Mechanical Binding
Symptom
Pellets back-burning into hopper or smoke coming from hopper
Backdraft Through Auger Tube
Symptom
Rust forming inside cook chamber or on grates
Corrosion of Interior Components
Symptom
Strong electrical or burning plastic smell from control area
Overheated Wiring or Component Failure
Symptom
Water or moisture inside hopper or on pellets
Moisture Intrusion into Fuel System
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