Ninja Start Inhibit / Safety Interlock Not Engaged

Air fryer powers on but will not start cooking when START is pressed; no error code displayed.

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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.

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Possible Causes

Basket not fully inserted, Faulty basket or lid switch, Unresponsive touch button, Control board logic fault

How to Fix / Troubleshooting

Safety first: Unplug before manipulating the basket or lid forcefully.

  • Step 1 – Confirm settings: Ensure a cooking function, time, and temperature are selected. Some models require pressing START/STOP firmly for a second.
  • Step 2 – Reseat basket: Remove and firmly reinsert the basket until it clicks. Check that the front of the basket is flush with the unit.
  • Step 3 – Check for obstructions: Look for food debris or warped liners preventing the basket from fully seating.
  • Step 4 – Test other buttons: If some buttons do not respond, the touch panel may be failing. Try unplugging for 5 minutes and retesting.
  • Step 5 – Interlock switch test (advanced): With the unit unplugged and cover removed, manually actuate the basket/lid switch and check continuity with a multimeter. Replace the switch if it does not change state when pressed.
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Repair Difficulty

Medium 3/5

Required Part

Basket/Lid Interlock Switch
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