Potterton Netaheat Profile 60e banging when firing up?
When the boiler 1st fires up it sometimes makes a loud bang as it does so - assuming due to extra build up of gas. Any ideas what can cause this?
I though it might be either piezo not firing 1st time so extra gas has accumulated or problem with over-supply of gas.. Boiler runs well after that.
Any ideas??
Andrew T, December 2013
