I have a Vokera Excell 80E.Can get no hot water when the selector in on the water setting.The red flue diagnostic light keeps flashing.Have checked the flue is clear and the fan is working.Can get hot water if I switch the selector switch to central heating and switch on the heating.
PCB(circuit board) and rubber diaphrams replaced last year.Can anyone help please.
PCB(circuit board) and rubber diaphrams replaced last year.Can anyone help please.