E9 appears intermittently; cooker may shut off unexpectedly during cooking.

Safety first: Unplug the cooker before inspecting the cord or inlet. Do not operate on damaged outlets.

• Check wall outlet: Plug another appliance into the same outlet to confirm stable power. Avoid using long or undersized extension cords.
• Inspect power cord: Look for cuts, kinks, or burn marks. Ensure the plug fits snugly in the outlet.
• Check inlet socket: With the unit unplugged, inspect the power inlet on the cooker for looseness or signs of overheating. Gently wiggle the cord at the inlet; excessive play suggests a worn socket.
• Try a different outlet: Move the cooker to a known-good outlet on a different circuit and test.

If E9 continues with a good cord and outlet, the internal power supply section of the main control board may be failing and should be replaced.