Float valve does not rise during pressure cooking; cooker times out or food is undercooked.

Safety first: Ensure the cooker is cool and depressurized before working on the float valve.

• Clean float valve: Remove the float valve pin and its silicone O-ring (refer to the Cuisinart manual). Clean all parts with warm soapy water, rinse, and dry.
• Inspect O-ring: Check the O-ring for cracks, flattening, or stickiness. Replace if not in good condition.
• Clean valve channel: Use a small brush or cloth to clean the hole in the lid where the float moves.
• Reassemble correctly: Reinstall the float valve and O-ring in the correct order and orientation.
• Test operation: During a water-only pressure test, observe that the float rises as pressure builds and drops when pressure is released.