Loud hissing from the steam release valve throughout cooking; food seems undercooked.

Safety first: Keep hands away from the steam plume. Allow the cooker to cool before disassembling the valve.

• Check valve position: Ensure the steam release valve is in the sealing position for pressure cooking.
• Clean valve: Remove the valve cap and wash thoroughly. Clear any food particles from the valve seat.
• Inspect seal: Check the silicone seal or ring on the valve for cracks or flattening. Replace if worn.

When to call a technician: If the valve still leaks after cleaning and seal replacement, the valve assembly or lid may need professional inspection.