lol...yes would be a start if we knew what boiler it was haha..im asuming you have a combi tho by the verrrry brief desciption lol..so we no that ignition sequence is all ok as the hot water sequence of operation is fine..so a.p.s,fan,pump are all working..my first sugestion would 2 be check the resistance of the heating temp sensor/thermistor..wen we see what boiler you have may be able to help more dude?!?!
toke, September 2009
