Air fryer runs but does not heat; fan operates and timer counts down, but food remains cold.

Safety first: Unplug and allow the unit to cool fully before accessing the heater area.

Basic checks:

• Temperature setting: Confirm a temperature above room temperature is selected and that preheat time is sufficient.

Internal checks (advanced):

• Access heater: Remove rear/bottom covers to expose the heating element terminals and thermal devices.
• Visual inspection: Look for broken heater coils, burnt connectors, or discolored wiring.
• Test heater: Disconnect one heater lead and measure resistance across the element. OL indicates an open element that must be replaced.
• Check thermal fuse: Test continuity through any inline thermal fuse or high-limit thermostat. Replace if open.
• Board output: If heater and thermal devices are good, the heater relay/triac on the control board may have failed; replace the board.