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

Safety: Unplug the Ultrean air fryer and let it cool completely before opening the base.

Steps to diagnose no-heat condition:

• Confirm symptom: Set the fryer to a high temperature (e.g., 400°F/200°C) for 5 minutes. If the fan runs but the interior does not get warm, proceed.
• Visual check: Remove the basket and pan and look at the heating element. Check for visible breaks, sagging, or heavy burn marks.
• Access heater terminals: Turn the unit upside down, remove the bottom cover, and locate the heater terminals and wiring.
• Check connections: Ensure the spade connectors are tight and not oxidized. Reseat them if necessary.
• Test the element: With the unit unplugged, disconnect one heater lead and measure resistance across the element. Infinite resistance indicates a failed element that must be replaced.
• Relay/board check: If the element tests good, the heater relay on the main control board may not be energizing. Inspect the board for burnt spots; replace the main control board if the relay is defective.

Warning: Do not attempt to repair a broken element coil; replace the entire heating element assembly.