Wilo circulation pump noise
We had an air source heat pump fitted back in January and though we're happy with the performance of the system, our Wilo circulation pump keeps making a loud vibrating noise that can be heard through parts of our upstairs.
This happens every few weeks, and is getting frustrating now. It's not 5 minute thing, as the noise can last for a few whole days What could be the cause? Or is it a faulty circulation pump
Air in the system?
2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with it) open system operating on WC
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