Why does my pilot reading light hold going out? I have a worcester 240 combi - Pilot wishy-washy tripped this...

I have a worcester 240 combi -
Pilot wishy-washy tripped this afternoon - have manage to get it lighted ( eventually) and after got it to stay on, but when i turned on the hot stroke, the boiler kicked in consequently after 10 seconds or so the complete lot went out. Any warning please?
What does USA mingy what it is spray...
Answers:    Even though it is serviced regularly it can still breakdown,you need a gas cook up with reproach finding experience to find the problem.
I enjoy inner ac contained by my hot...
TAKE NOTE!!
ive had this near my combi,and a good blast near a can of compressed air,to blast the dust out of it will cure the problem.have this problem a few times,and believe me,its nothing complicated,even though its a hermetic unit,the spout soon gets clogged,so try this earlier getting ripped off.