This question is regarding NewTeam Varispeed 50 Twin Pump Spares

Knocking in pump

Shower off but power switched on and there is a knocking noise in the pump which can be felt physically. Switch off the power switch and the noise/knocking stops. Noise/knocking starts when switch put back on. It is as though it is thinking of rotating but nothing is requesting it to do so.
Asked 9 years ago by Anonymous

Your description and conclusion sounds pretty accurate, I suspect a faulty flow switch, disconnect each one in turn and then reconnect if it is the flow switches then this should allow you to determine which one

Answered 9 years ago by Anonymous

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