Unit heats but will not build or maintain pressure; steam constantly escapes from lid area.

Safety first: Do not touch escaping steam. Turn off and unplug the cooker, and allow pressure to release fully before opening.

• Inspect sealing ring: Remove the ring from the lid. Ensure it is seated evenly in its groove when installed. Replace if stretched, cracked, or hardened.
• Clean contact surfaces: Wipe the pot rim and lid sealing surface thoroughly. Even small food particles can prevent sealing.
• Check steam release valve: Ensure the valve is set to the 'Sealing' position for pressure cooking. Remove and clean it if it is clogged with starch.
• Examine float valve: Confirm the float pin moves freely and the small silicone cap is intact. Replace the float valve assembly if it leaks.