AEG air fryer display shows E5 and the unit will not start a cooking cycle.

Safety first: Unplug the appliance before inspecting the cord or opening the housing.

Troubleshooting steps:

• Check mains outlet: Test the outlet with another high-power appliance to confirm stable power. Avoid using long or undersized extension cords.
• Inspect power cord: Examine the AEG air fryer power cord for cuts, kinks, or burn marks. Gently flex near the plug and entry point; if the unit powers on/off intermittently, the cord may be internally broken and should be replaced.
• Check mains connector: Remove the rear/bottom cover to access the mains input terminal block or connector. Ensure all screws are tight and there are no signs of overheating.
• Inspect SMPS section: On the main control PCB, visually inspect the power supply area (near the mains input) for bulged capacitors, burnt resistors, or cracked solder joints. Replace visibly damaged components or the entire board if necessary.
• Reassemble and test: After securing connections or replacing parts, reassemble the unit and test. If E5 persists with a known-good outlet, the main control board likely requires replacement.

Warning: Work on live mains circuitry is hazardous. If you are not experienced with electronics, have a qualified technician perform these checks.