Seem to be having a problem with my boiler - had the heating on for half hour last night then something tripped my power when I got everything back on I noticed my pilot light had gone out it took abouts 5 attempts to get it lit again, it day go back out a few times now I have managed to get that stay lit but my heating won't stay on it comes on for 5 minutes then goes off again. Can you help as its really cold at the moment.