why does my combi boiler burner die down whenever i turn on the hot tap tis happens in whatever mode it is on diverter changed also sensor we are all stumped
Well, I guess you are not goin to recommend the plumber you used then. I don't know why, but in our old house with a combi when the hot water tap is turned on it starts to come out fast. Then as it heats up, it starts to flow very slowly.
if iwqas on a higher wage i may be able to get a better heating system like yours plumber was excellent .Thermister gone had to come out again today all done now 110 service fire combi and repair