E12
Ninja Internal Overtemperature / Cooling Failure

E12 error appears intermittently; unit may stop mid-cycle and then restart after cooling.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Blocked ventilation, Failing fan motor, Excessive grease buildup around heater, High-limit thermostat tripping intermittently

How to Fix / Troubleshooting

Safety first: Unplug and allow the unit to cool fully before cleaning or inspection.

  • Step 1 – Improve ventilation: Ensure the air fryer is on a hard, flat surface with at least 5 inches (12 cm) of clearance on all sides and above. Do not operate under low cabinets where heat can accumulate.
  • Step 2 – Clean vents: Use a soft brush and vacuum to clean the rear and bottom vents. Remove dust, pet hair, and grease.
  • Step 3 – Clean interior surfaces: Remove the basket and pan. Wipe the interior walls, especially near the heating element and temperature sensor, to remove grease that can trap heat.
  • Step 4 – Check fan operation: During a test cycle, listen for steady fan noise. If the fan speed fluctuates or stops, the fan motor may be failing and causing hot spots.
  • Step 5 – Professional evaluation: If E12 continues after thorough cleaning and ensuring good airflow, the high-limit thermostat or fan motor may need replacement.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

High-Limit Thermostat
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements