Display shows P0 or similar low-pressure indication; cooker does not reach full pressure and cooking time does not count down.

Safety first: Ensure there is adequate liquid in the pot before attempting pressure cooking.

Steps:

• Open the lid and verify that the large silicone sealing ring is properly seated in the lid groove all the way around. Replace if stretched, cracked, or hardened.
• Check that the steam release valve is set to the sealing position as indicated in the Starfrit manual.
• Inspect the float valve pin and its small silicone O-ring. Clean any food residue and ensure the O-ring is intact and flexible.
• Close the lid and lock it firmly. Start a pressure program with at least the minimum required liquid.
• If P0 or low-pressure indication persists, inspect the lid for warping or damage and consider replacing the sealing ring and float valve set as a kit.