Steam release valve is very hard to turn or feels stuck.

Safety first: Ensure the cooker is cool and not under pressure before attempting to move the valve.

Step-by-step checks:

• 1. Remove valve: Pull or unscrew the valve cap according to the manual.
• 2. Soak and clean: Soak the valve in warm soapy water, then scrub gently with a brush to remove buildup.
• 3. Clean valve seat: Clean the mating surfaces on the lid with a soft brush.
• 4. Inspect for damage: If the stem is warped or cracked, replace the valve.
• 5. Reinstall and test: After drying, reinstall the valve and ensure it turns smoothly between positions.