E5 appears on the display and the unit shuts down or refuses to start.

Safety first: Unplug the air fryer before any inspection. Do not attempt live voltage measurements unless you are trained and equipped.

Steps to troubleshoot E5:

• 1. Check the outlet: Plug a known‑good appliance (like a lamp) into the same outlet to confirm power. Avoid using extension cords or power strips; plug the Hamilton Beach air fryer directly into a grounded wall outlet.
• 2. Inspect the power cord: Look for cuts, kinks, or burn marks along the cord. Gently wiggle the cord at the entry point to the fryer while it is unplugged; if it feels loose, the internal strain relief or connections may be damaged.
• 3. Internal power connection check (advanced): Remove the bottom or rear cover to access the internal power entry. Verify that the cord wires are firmly attached to the terminal block or power board and that there are no signs of overheating.
• 4. Check the internal fuse: Many Hamilton Beach air fryers have a small glass or ceramic fuse on the power board. With the unit unplugged, remove the fuse and test for continuity. Replace only with the same type and rating if blown.
• 5. Inspect surge protection components: Look for a metal oxide varistor (MOV) or similar surge component on the power board. If it is cracked, charred, or split, the board should be replaced.
• 6. Replace the control/power board: If the fuse is good and wiring is intact but E5 persists, the main control/power board is likely faulty and should be replaced as an assembly.

Warning: Do not bypass the fuse or modify the power circuit. If you are not comfortable working around mains wiring, contact a professional technician.