OBH Nordica Water Pump Cavitation or Impeller Wear

Water pump is very noisy or makes a buzzing sound but little water flows.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Air trapped in pump, Worn impeller, Blocked pump inlet, Low water level

Safety: Unplug before handling the pump or hoses.

Steps:

Check water level: Ensure the reservoir is adequately filled.
Bleed air: Tilt the unit gently forward and backward to help release trapped air from the pump.
Clean inlet: Access the pump and clean any filter or screen at the inlet. Remove debris from hoses.
Replace pump: If noise persists and flow remains weak, the pump impeller may be worn. Replace the pump with an OBH Nordica-compatible water circulation pump.

Medium 3/5

Water Circulation Pump

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