It sounds like a dirty pilot nozzle, a good clean during a service could possibly sort the problem out, if not it may need replacing. If the pilot isn't making good contact with the Thermocouple it will cut the gas supply off.
If you don't get a good service engineer, with respect, you're goin to pay for an engineer to go to a fault paging chart. Then just fail to find the fault, phone the manufacturers CS team to be told to test for continuity at certain points on the pcb before he or she can diagnose the problem.
I had exactly the same problem last week with a glow worm back boiler. Was scratching my head, checked all the basic things, even made a thread on Here for help but just got abuse from folk (specially agile). Turned out the old lady had been hoovering around the fire and had pulled out the...
If it didn't push through when all working rads were closed and the culprit ones (one at a time) were left open, they made need repiping. Drop two new circs to rads in the corner of the room, trunk (cap) them they dont look so ugly. Or you could probably spend the same amount of money on a...
Had a similar problem like this before and the culprit was a condense pipe leaking every time the boiler condensed....obviously when other engineers checked there was no sign of a leak as it only condensed when boiler was on and every 15 mins.
Ok, are you familiar with pressing to overheat button on the front panel under a black cap? Also the burner lockout button which is located inside the boiler which might be illuminated red and require resetting by pressing?
If there is a fuse, it will be a glass 1.5 amp. I only install...
iron grabs the Oxygen from the water, makes Iron Oxide (= rust) and you're left with hydrogen - which is why you possibly keep having to vent your sealed system. If you put a corrosion inhibitor in your system it will stop the reaction, and you won't have to bleed your rads any more.
£10 to £15...