E9 is displayed and the cooker stops mid-cycle or will not start.

Safety first: Unplug the unit before opening any covers. Avoid touching circuit boards with wet hands.

• Power cycle: Unplug for at least 10 minutes, then plug back in and attempt a basic program. Sometimes transient glitches clear with a full reset.
• Dry the unit: If steam or liquid has entered the control panel area, leave the cooker unplugged and allow it to dry for 24–48 hours in a warm, dry room.
• Check for display issues: If the display flickers or segments are missing along with E9, the ribbon cable between the display and main board may be loose. Reseating this cable (if accessible) can restore communication.
• Firmware reset (if available): Some KitchenAid models support a factory reset via button combination (consult the user manual). Perform this reset and test again.
• When to call a technician: Persistent E9 usually indicates a failing control board that must be replaced. This requires disassembly and should be done by a service professional.