I have a Halstead combi boiler fitted, over the last 2 days I have struggled to get hot water it has been luke warm despite the boiler firing up.
Today on further inspection I noticed that when I turn on the hot tap the radiators start to heat up as though I have turned on the central heating. When I say heat up I mean they get hot. Would I be correct in thinking that the diverter valve is faulty???? or is is more likely to be the PCB
Today on further inspection I noticed that when I turn on the hot tap the radiators start to heat up as though I have turned on the central heating. When I say heat up I mean they get hot. Would I be correct in thinking that the diverter valve is faulty???? or is is more likely to be the PCB