Hope someone can point me in the right direction. After some recent building work the boiler has been refitted before its removal no problems but now no hot water diaphragm is fine the pin works the micro switchs okay the relay switchs fine i can not bleed any air from any of the nipples just running water so presume not a air problem? the burners ignit but nothing gets hot? any clues thanks for any help i have been scratching my head for a while now and found the site whilst trying to look for clues.