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thank you for replying boiler make gloworm fuelsaver mk2 model 40b pump grundfos ups 15-30 - its a red one. my pilot light has also gone out and i can not ignite it, there is a new themo cupler in there too about same age of pump. not bled pump no idea how. system combi boiler copper...

:cry: Hello I have had great ch till the other day when all radiators went cold. Have had a similar problem about 6 months ago but this was cured witha new pump and some cleaner by a plumber. At time of writing my fingers are blue with cold, so please xcuse any spelling mistakes. The...