J
Jonzo25
Right what happens is the boiler will be running as normal all of a sudden it will make a huge bang (enough to make me jump 5ft!!) My first thought was flue blockage or condensate, checked both and their fine, checked the Neg pressure was ok on fan it was at -5, cleaned out the baffles on heat exchanger and checked for cracks etc fine, check inlet pressure standing and workin both fine, had it running for an hour with no problems before i left today but recived a phone call 2 hours later of the customer saying it happened again when they opened a hot water tap. Being honest I'm at a loss as when it happend i couldn't even localise where the sound came from.