E20 error, cooker cannot maintain set pressure and cycles off

Safety first: Allow the cooker to cool and depressurize before servicing.

• Clean and inspect valves: Thoroughly clean the steam release valve, float valve, and anti‑block shield. Replace any parts that appear worn.
• Replace sealing ring: If the ring is more than 1–2 years old or shows wear, replace it with a genuine Severin ring.
• Test with water: Run a pressure cycle with only water and observe if the cooker can hold pressure without frequent venting.
• Sensor replacement: If mechanical parts are good but E20 persists, the pressure sensor may be drifting and should be replaced.

Warning: Do not adjust or stretch springs in safety valves; always replace with correct parts.