Gas Boiler Switched itself off?

Sorted I think
Some times when you say you fixed it it come back,but 24 hrs and now ok ,as i said replaced the fuses in pcb board then with hair dryer dried all wiring connections out ,sarted boiler in 0 poistion for a min and then just treid hot water side first then Rads as well I had also blown sucked vacume vale and used hair dryer to spin fan,***better say***
ALL THESE TASKS WHERE DONE WITH ELECTRIC DISCONNECTED
Stuart

Stuart
November 2010

replaced the 2amp fuses on pcb one had blown,now boiler 1,Stand by greenlight ok,boiler 2,starts pilot and i think main flame for a few seconds ,3,then end light comes on marked in book as Flames or Gas failure 4 boiler shuts down
thanks for repply

Stuart law
November 2010

check for power to boiler check supply lead
check fuse 1 and 2 on pcb if there ok
it may be interface card or main pcb

b
November 2010