E9
All-Clad Control Panel / Keypad Communication Error

E9 error appears and the cooker will not respond to button presses or start programs.

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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

Loose ribbon cable between control panel and main board, Moisture or liquid ingress into control panel, Failed touch keypad membrane, Faulty main control PCB

How to Fix / Troubleshooting

Safety first: Unplug the cooker before any inspection. Do not operate if there is visible liquid inside the control panel.

  • Dry the exterior: If any liquid was spilled on the top or front, wipe it off immediately. Allow the unit to air dry for several hours in a warm, dry place.
  • Power cycle: After drying, plug the unit back in and see if the display and buttons respond normally.
  • Check for stuck buttons: Press each button individually to ensure none are physically stuck or jammed. Clean around the buttons with a slightly damp cloth.
  • Advanced (out of warranty): Remove the outer housing to access the control panel ribbon cable. Ensure the cable is fully seated in its connector and not damaged. Do not touch live circuits.

If E9 persists, the control panel or main board likely needs replacement, which should be performed by a qualified technician.

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Repair Difficulty

Hard 4/5

Required Part

Control Panel Assembly
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