When I swith on the heating on the timer and set the thermastat the bolier does fire light up as if it is on, I can here the click and the pump going but no steam is coming out outside and the radiators are not heating up, can you help?
depends on which glowworm it is?? does it have a pilot light or is it electronic ignition?? (i.e a fan??) how big is the terminal outside 5"diameter or large square steel box??
pete
December 2009
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