Wonder if anyone can advise me. I have a Glow-Worm 55F gas boiler that was serviced back in July last year but has since developed a fault. The symptoms are that on the start up cycle the pilot light ignites but instead of the main burner firing up the pilot light igniter continues to fire (even though the pilot light is already lit) and nothing else happens. If I press the palm of my hand on the middle of the cover, the boiler will then complete the starting cycle and the main burner fires. Most times, when I take my hand away, the boiler continues to run for around 30secs and then the main burner goes out and it reverts back to the fault above. This problem is a lot worse (ironically) when it is colder. It has been mooted that the cover seal may be the problem, due to other (well known) faults, fan etc, the cover has been off a few times.
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