Display shows E8; unit may shut down unexpectedly or fail to start a program.

Safety first: Unplug the Proscenic air fryer and allow it to cool for at least 30–45 minutes. Internal components may be extremely hot.

Steps to investigate E8:

• 1. Ensure proper placement: Confirm the air fryer is used on a hard, heat-resistant surface with adequate clearance around all vents. Do not place it in enclosed cabinets during use.
• 2. Clean vents and interior: Remove the basket and drawer. Clean grease and crumbs from the interior, especially around the top heating area. Use a soft brush or vacuum to clear dust from rear and bottom vents.
• 3. Check fan operation: Start a low-temperature cycle and listen for the fan. If the fan does not run, refer to fan motor troubleshooting. A non-functioning fan can cause internal overheat and E8.
• 4. Access thermal protection devices: With the unit unplugged and cooled, remove the top or rear cover. Locate the thermal fuse and/or high-limit thermostat mounted near the heating element or on the metal housing.
• 5. Test the thermal fuse: Disconnect one lead and check continuity with a multimeter. If open (no continuity), the fuse has blown and must be replaced with the same temperature and current rating.
• 6. Inspect the high-limit thermostat: Some models use a resettable thermostat; others are one-time devices. Test for continuity. If open and not resettable, replace it.
• 7. Investigate root cause: A blown thermal fuse usually indicates prior overheating due to blocked vents, fan failure, or a stuck heater relay. Inspect the fan and main PCB for faults before simply replacing the fuse.
• 8. Reassemble and test: After replacing the thermal fuse/thermostat and correcting airflow issues, reassemble and run a short test cycle while monitoring for normal operation.

Warning: Never bypass a thermal fuse or thermostat; they are critical safety components.