My Vaillant Turbomax combi has started making an alarming (single) bang when any of the hot tap (kitchen/bathroom) are turned on or off.
It did this last year shortly before the pump packed up and we had a new one fitted. All was well until last month or so when noise has returned.
I *think* it firstly only did it when central heating was on AND hot taps turned on/off but now seems to do it even if c/h not on.
Pressure seems ok, about 1.5 bar at normal temp (boiler has mode where it keeps water at certain temp - forget the technical name)
Any ideas, as it sounds like its on its last legs?
Thanks in advance![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
It did this last year shortly before the pump packed up and we had a new one fitted. All was well until last month or so when noise has returned.
I *think* it firstly only did it when central heating was on AND hot taps turned on/off but now seems to do it even if c/h not on.
Pressure seems ok, about 1.5 bar at normal temp (boiler has mode where it keeps water at certain temp - forget the technical name)
Any ideas, as it sounds like its on its last legs?
Thanks in advance