Lid is stuck and will not open after cooking; float valve appears down and there is no visible steam.

Safety first: Confirm that pressure is fully released. The float valve should be down and no steam should escape when gently nudging the valve.

• Break vacuum gently: If safe, move the steam release valve briefly to venting to admit a small amount of air and break any residual vacuum.
• Cool further: Allow the cooker to cool longer; as temperatures equalize, the lid may release more easily.
• Clean locking area: Once open, clean the lid lock mechanism, hinge, and surrounding areas to remove any sticky residue.
• Inspect sealing ring: Check if the ring is overly tight or swollen. Replace if it appears deformed.
• Avoid force: Do not pry the lid with tools; this can damage the locking ring and compromise safety.

Warning: If you suspect the cooker is still under pressure, do not attempt to force the lid open. Contact Nesco support if the lid remains stuck despite full cooling and venting.