For just over a year I have had a Techflow Turbo 2 Twin Negative head pump in the loft servicing the whole house hot water including the bathroom and en-suite showers. The installation was surveyed and approved by Techflow at that time. The system has been working fine.
Recently I have noticed that when a hot tap is on and the pump is delivering hot water the pump momentarily switches off or hesitates occassionally. I have tried adjusting the hot flow switch fractionally but this results in the pump staying on when the taps are turned off so I have adjusted the switch back and still get the problem.
Has anyone any thoughts on what might be causing this?
Recently I have noticed that when a hot tap is on and the pump is delivering hot water the pump momentarily switches off or hesitates occassionally. I have tried adjusting the hot flow switch fractionally but this results in the pump staying on when the taps are turned off so I have adjusted the switch back and still get the problem.
Has anyone any thoughts on what might be causing this?