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Hi, thanks for your message. Yes I've checked continuity as you describe and all appears to be OK. I think that it could be the control board?

Thanks for your comments.

Hi, I have a Glowworm Swiftflow 75 Combi boiler (with SIT Gas Valve) which has recently failed. Whilst running the hot water, the water went cold due to the main burner and pilot light going out. I tried to relight the pilot to no avail; replaced the thermocouple and now the pilot stays...