Multicooker takes excessively long to come up to pressure or never reaches set pressure, but no visible steam leak.

Safety first: Unplug and allow to cool before touching internal surfaces.

Steps to resolve:

• Check pot and heater contact: Ensure the inner pot bottom is flat and clean. Remove any burnt-on food from the heater plate.
• Use correct pot: Only use the original Siemens inner pot; third-party pots may not transfer heat efficiently.
• Descale if needed: If you see mineral buildup on the heater plate, gently clean with a non-abrasive descaler suitable for stainless surfaces.
• Test with water: Run a pressure cycle with the recommended water quantity. If pressure is still slow, the heater may be weakening and require replacement.

When to call a technician: Persistent underheating with a clean, correct pot indicates a failing heater or sensor circuit that should be diagnosed professionally.