E8 error code appears when trying to start or during a pressure cycle; unit stops heating.

Safety first: If the cooker is hot, keep hands and face away from the steam vent. Allow pressure to release fully before opening the lid. Unplug the unit.

• Release pressure: Carefully move the steam release valve to the Venting position using a utensil if necessary. Wait until all steam has escaped and the float valve drops.
• Clean vent system: Remove the steam release valve, anti-block shield, and any removable vent parts from the lid. Wash them thoroughly to remove starch or food buildup.
• Check fill level: Ensure you are not exceeding the maximum fill line, especially with beans, grains, or foamy foods. Reduce quantity and add more liquid if needed.
• Avoid thickening agents: Do not pressure cook with large amounts of thickeners (flour, cornstarch) that can clog vents. Add them after pressure cooking.
• Test with water: Reassemble and run a water-only pressure test. If E8 recurs with just water, the pressure sensor or safety system may be faulty.

Repeated E8 with proper use indicates a possible pressure sensor or safety valve issue that should be evaluated by a professional.