How to Fix / Troubleshooting

Safety first: Unplug the unit and drain water before removing the pump.

Steps to quiet the pump:

Check water level: Ensure the reservoir is filled to the proper level so the pump does not run dry.
Bleed air: Tilt the unit slightly forward and backward (while unplugged) to help release trapped air from the pump housing, then restart.
Clean pump: Remove the recirculation water pump, open its inlet screen, and clear any debris or scale from the impeller.
Replace pump: If noise persists or the pump feels rough when spun by hand, replace it with a new Silonn‑compatible pump.

When to call a professional: If you are not comfortable removing hoses or the pump, seek professional service.

Water pump is very loud or makes grinding noises during operation.

Possible Causes