After no one replying to help I spoke to a friend and one thing he mentioned was the diverter valve.
As the boiler was working to heat the water the diverter was my next port of call.
Diverter is in two parts the actuator which controls the valve and the brass bodied valve itself.
I...
Problem:
pilot light is lit and is fine
Turn hot water on using programmer and burner starts and water is hot from taps all seems ok. When I turn on the central heating there is a delay before burner lights up but when it does it immediately goes out again?
Room thermostat is at maximum...
