AEG Start Circuit / User Interface Logic Fault

Multicooker powers on but will not start any program when Start is pressed; no error code shown.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Faulty Start button or touch sensor, Child lock function enabled, Firmware glitch, Loose keypad ribbon cable

How to Fix / Troubleshooting

Safety first: Unplug the cooker before removing the control panel.

  • Check child lock: Refer to the AEG manual to see if a key lock icon is displayed. Disable the child lock by holding the specified button combination.
  • Power reset: Unplug for 10 minutes, then reconnect and try again.
  • Inspect keypad connection: Remove the front panel and reseat the ribbon cable between the keypad/touch panel and the main PCB.
  • Test Start button: If using mechanical buttons, test the Start switch with a multimeter for continuity when pressed. Replace the keypad or switch if faulty.
  • Control board replacement: If the interface hardware is intact but the cooker still ignores Start, the control PCB may be defective and require replacement.
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Repair Difficulty

Medium 3/5

Required Part

Keypad / Touch Panel Assembly
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