hi guys, i recently fitted a thermostat to my central heating systems timer, I have to have the hot water on at the same time as the CH system, and I have to have the timer on to have the thermostat on, but since I fitted the thermostat when the heating stops the hot water continues till the timer turns it off, but now the boiler is making a really loud banging noise alot more than before, any ideas as to why this would happen after fitting the thermostat, cheers for your help.
