Oster Air Fryers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E1
Oster digital air fryer will not start a cooking cycle and displays error code E1 on the control panel.
NTC Temperature Sensor Open Circuit
E10
Oster air fryer shows E10 and refuses to start; door or basket appears properly inserted.
Basket / Door Detection Switch Fault
E2
Oster air fryer powers on but immediately shows E2 and will not heat.
NTC Temperature Sensor Short Circuit / Overtemperature Detection
E3
Oster air fryer beeps and shows E3 shortly after starting a cooking program; fan may run briefly then stop.
Overtemperature Protection Trip
E4
Oster air fryer displays E4 and will not start or stops mid-cycle with a beep.
Overheat / Thermal Fuse or Thermostat Fault
E5
Oster air fryer shows E5 on the display and will not heat, though the fan may still run.
Heating Element Circuit Fault
E6
Oster air fryer beeps and shows E6; controls may freeze or not respond properly.
Control Board Internal Error
E7
Oster air fryer displays E7 and will not start; sometimes occurs after a power outage or surge.
Power Supply / Voltage Error
E8
Oster air fryer shows E8 and shuts down; fan may stop abruptly.
Fan Motor Circuit Fault
E9
Oster air fryer intermittently shows E9 and beeps; sometimes the display flickers.
Keypad / Touch Panel Communication Error
Symptom
Oster air fryer basket handle feels loose or wobbly; basket may feel unsafe to lift when full.
Loose Basket Handle / Fastener Failure
Symptom
Oster air fryer basket is difficult to insert or remove; it feels misaligned or jams.
Basket Rail / Drawer Alignment Issue
Symptom
Oster air fryer buttons or touch controls respond intermittently or require very hard presses.
Unresponsive Touch Panel
Symptom
Oster air fryer display and fan shut off suddenly during cooking and the unit will not turn back on until it cools.
Thermal Overload / Overheating Shutdown
Symptom
Oster air fryer display is very dim or segments are missing, but the unit still heats and cooks.
Display Module Degradation
Symptom
Oster air fryer does not power on at all; no lights, no beeps, completely dead.
No Power / Input Power Failure
Symptom
Oster air fryer emits a burning plastic smell during use.
Overheating Plastic Components / Wiring Insulation
Symptom
Oster air fryer emits a chemical or paint-like odor even after multiple uses.
Persistent Off-Gassing from Internal Coatings
Symptom
Oster air fryer emits a high-pitched whine or electrical buzzing sound during operation.
Electrical Noise from Fan or Control Board
Symptom
Oster air fryer exterior gets excessively hot to the touch during normal cooking.
Insulation / Heat Shield Degradation
Symptom
Oster air fryer fan continues to run for a long time after the cooking cycle ends.
Extended Cool-Down Fan Operation
Symptom
Oster air fryer fan speed seems unusually low; food cooks slower and less evenly than before.
Reduced Fan Performance
Symptom
Oster air fryer heats but the fan does not run; food burns on top and cooks unevenly.
Convection Fan Not Operating
Symptom
Oster air fryer interior light (on models equipped) does not turn on, but the unit otherwise works normally.
Interior Light Failure
Symptom
Oster air fryer leaks grease or liquid from the bottom or front of the unit during cooking.
Dripping / Leakage from Basket Assembly
Symptom
Oster air fryer makes a loud rattling or grinding noise during operation.
Mechanical Noise from Fan Assembly
Symptom
Oster air fryer nonstick coating is peeling or flaking from the basket or tray.
Nonstick Coating Degradation
Symptom
Oster air fryer occasionally sparks or pops near the heating element during cooking.
Arcing at Heating Element or Debris
Symptom
Oster air fryer powers on and display works, but it will not start cooking when the Start button is pressed.
Start Command / User Interface Fault
Symptom
Oster air fryer produces excessive smoke while cooking, especially with fatty foods.
Smoke from Grease Accumulation
Symptom
Oster air fryer rubber feet are missing or the unit slides easily on the countertop.
Missing or Worn Base Feet
Symptom
Oster air fryer shuts off when the basket is bumped or moved slightly during cooking.
Intermittent Basket / Door Switch Contact
Symptom
Oster air fryer temperature is inaccurate; food undercooks or overcooks compared to the set temperature.
Temperature Regulation / Calibration Fault
Symptom
Oster air fryer time or temperature settings change by themselves during cooking.
Erratic Control Input / Electrical Interference
Symptom
Oster air fryer timer counts down but the unit does not maintain temperature; heat cycles off too early.
Premature Heater Cutoff
Symptom
Oster air fryer trips the household circuit breaker or GFCI outlet when turned on.
Electrical Short or Ground Fault
Symptom
Oster air fryer turns on and fan runs, but there is no heat; food remains cold even after several minutes.
No Heat / Heating Element Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Oster digital air fryer will not start a cooking cycle and displays error code E1 on the control panel.
|
NTC Temperature Sensor Open Circuit | View Details |
| E10 |
Oster air fryer shows E10 and refuses to start; door or basket appears properly inserted.
|
Basket / Door Detection Switch Fault | View Details |
| E2 |
Oster air fryer powers on but immediately shows E2 and will not heat.
|
NTC Temperature Sensor Short Circuit / Overtemperature Detection | View Details |
| E3 |
Oster air fryer beeps and shows E3 shortly after starting a cooking program; fan may run briefly then stop.
|
Overtemperature Protection Trip | View Details |
| E4 |
Oster air fryer displays E4 and will not start or stops mid-cycle with a beep.
|
Overheat / Thermal Fuse or Thermostat Fault | View Details |
| E5 |
Oster air fryer shows E5 on the display and will not heat, though the fan may still run.
|
Heating Element Circuit Fault | View Details |
| E6 |
Oster air fryer beeps and shows E6; controls may freeze or not respond properly.
|
Control Board Internal Error | View Details |
| E7 |
Oster air fryer displays E7 and will not start; sometimes occurs after a power outage or surge.
|
Power Supply / Voltage Error | View Details |
| E8 |
Oster air fryer shows E8 and shuts down; fan may stop abruptly.
|
Fan Motor Circuit Fault | View Details |
| E9 |
Oster air fryer intermittently shows E9 and beeps; sometimes the display flickers.
|
Keypad / Touch Panel Communication Error | View Details |
| – |
Oster air fryer basket handle feels loose or wobbly; basket may feel unsafe to lift when full.
|
Loose Basket Handle / Fastener Failure | View Details |
| – |
Oster air fryer basket is difficult to insert or remove; it feels misaligned or jams.
|
Basket Rail / Drawer Alignment Issue | View Details |
| – |
Oster air fryer buttons or touch controls respond intermittently or require very hard presses.
|
Unresponsive Touch Panel | View Details |
| – |
Oster air fryer display and fan shut off suddenly during cooking and the unit will not turn back on until it cools.
|
Thermal Overload / Overheating Shutdown | View Details |
| – |
Oster air fryer display is very dim or segments are missing, but the unit still heats and cooks.
|
Display Module Degradation | View Details |
| – |
Oster air fryer does not power on at all; no lights, no beeps, completely dead.
|
No Power / Input Power Failure | View Details |
| – |
Oster air fryer emits a burning plastic smell during use.
|
Overheating Plastic Components / Wiring Insulation | View Details |
| – |
Oster air fryer emits a chemical or paint-like odor even after multiple uses.
|
Persistent Off-Gassing from Internal Coatings | View Details |
| – |
Oster air fryer emits a high-pitched whine or electrical buzzing sound during operation.
|
Electrical Noise from Fan or Control Board | View Details |
| – |
Oster air fryer exterior gets excessively hot to the touch during normal cooking.
|
Insulation / Heat Shield Degradation | View Details |
| – |
Oster air fryer fan continues to run for a long time after the cooking cycle ends.
|
Extended Cool-Down Fan Operation | View Details |
| – |
Oster air fryer fan speed seems unusually low; food cooks slower and less evenly than before.
|
Reduced Fan Performance | View Details |
| – |
Oster air fryer heats but the fan does not run; food burns on top and cooks unevenly.
|
Convection Fan Not Operating | View Details |
| – |
Oster air fryer interior light (on models equipped) does not turn on, but the unit otherwise works normally.
|
Interior Light Failure | View Details |
| – |
Oster air fryer leaks grease or liquid from the bottom or front of the unit during cooking.
|
Dripping / Leakage from Basket Assembly | View Details |
| – |
Oster air fryer makes a loud rattling or grinding noise during operation.
|
Mechanical Noise from Fan Assembly | View Details |
| – |
Oster air fryer nonstick coating is peeling or flaking from the basket or tray.
|
Nonstick Coating Degradation | View Details |
| – |
Oster air fryer occasionally sparks or pops near the heating element during cooking.
|
Arcing at Heating Element or Debris | View Details |
| – |
Oster air fryer powers on and display works, but it will not start cooking when the Start button is pressed.
|
Start Command / User Interface Fault | View Details |
| – |
Oster air fryer produces excessive smoke while cooking, especially with fatty foods.
|
Smoke from Grease Accumulation | View Details |
| – |
Oster air fryer rubber feet are missing or the unit slides easily on the countertop.
|
Missing or Worn Base Feet | View Details |
| – |
Oster air fryer shuts off when the basket is bumped or moved slightly during cooking.
|
Intermittent Basket / Door Switch Contact | View Details |
| – |
Oster air fryer temperature is inaccurate; food undercooks or overcooks compared to the set temperature.
|
Temperature Regulation / Calibration Fault | View Details |
| – |
Oster air fryer time or temperature settings change by themselves during cooking.
|
Erratic Control Input / Electrical Interference | View Details |
| – |
Oster air fryer timer counts down but the unit does not maintain temperature; heat cycles off too early.
|
Premature Heater Cutoff | View Details |
| – |
Oster air fryer trips the household circuit breaker or GFCI outlet when turned on.
|
Electrical Short or Ground Fault | View Details |
| – |
Oster air fryer turns on and fan runs, but there is no heat; food remains cold even after several minutes.
|
No Heat / Heating Element Failure | View Details |
No matching codes found
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