Loud hissing, rattling, or whistling noises during pressure cooking.

Safety first: Do not cover the steam vent. Allow the cooker to finish or carefully release pressure following the manual.

• Clean valve and anti-block shield: After cooling, remove and clean the steam release valve and anti-block shield thoroughly.
• Check valve assembly: Ensure the valve cap is properly seated and not loose.
• Inspect sealing ring: Replace a hardened or stretched sealing ring that may be causing vibration and noise.
• Use correct fill and ingredients: Avoid thick sauces or high-foaming foods without following Philips guidelines, as they can cause noisy venting.