if power to boiler is ok (have you replaced the link to prove it's not programmer or stat)? - how does this boile rusually fire in C.Heating mode? does it use a flow switch?
thanks Agile, I appreciate your help.
I know the boiler has no diverter valve and as you say the hot water ignition happens when the flow switch operates.
In general do a lot of combi's in central heating mode start the igntition from the timeclock/stat ? Do some fire from a primary...
i think some models don't show fault codes/lights with h/w faults like these. I would ask the poster: what flow rate does the hot tap run at when the fault occurs firstly.
sorry, thanks for your reply. My boiler is a worcester Junior (28i). non condensing combi.
I was just wondering in general. I know they can vary just wondered what the most common way was.