hi everyone
i have a small problem with my worcester 240 combi boiler
while running hot water tap it came out cold.
i would say 1 in 10 times of turning the tap and running it again i then actually get hot!! water
also did the same on central heating
every time you turn the hot tap/put heating on --- the pilot flame, lights up each time though,so gas is present each time but the flame will not ignite the main flame (combustion tank).
the exhaust fan is a-ok as you can hear that running.
hope this helps someone
many thanks again paul