Why is my Schaerer Siena 2 pump so loud?
- MMaria LawrenceSep 9, 2025
If the Schaerer Coffee Maker pump is making loud noises or the indicator light is on, it could be due to air in the system because the water tank wasn't properly inserted. To resolve this, bleed the device by pressing the hot water button for about 6 seconds or turn the rotary dial to the [ Hot water ] position.













