Water does get hot when tap turned down low but not scalding. No knocking noise noticed.
If the heat plate exchanger is blocked how do we resolve.
Do you not think this could be the Diverter Valve?
With boiler controls set to hot water and radiators and radiator thermostats and room theromstat set to off we re getting heat out of a few radiators when the hot water tap is switched on. Can any one advise!!!
