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Hello, and thanks in advance to anyone who is prepared to give me an opinion.
I have an 8 year old (trouble free!) Keston 80 condensation boiler. I believe it is a closed system (I have no header tank but do have two cylinders (expansion vessels?? - one white one red) attached to the pipework. There is a pressure gauge attached to a pipe leading to the red one with a marker around the 1.5 mark. The boiler does my hot water and my underfloor water pipe central heating.
A couple of days ago, the boiler was running but then made a number of alarming coughing/pipe banging noises. When I got to it it has fired down and everything seemed ok. The pressure was normal around 1.3 (it normally rises to 1.5 during running).
Over the next day or so, I ran the boiler for the odd 10-15 minutes without being able to replicate but last night as I was trying again, there was what I can describe as a sucking noise from the boiler followed by two 'thwock-thwock' noises. At each 'thwock' the pressure gauge shot momentarily over 2 and then it fired down and the gauge went back to normal. There were a couple of after noises from the pipe work like it was coughing. I turned it off and on and it was happy to fire up again but I have since set it to off.
I will obviously get someone round, but does anyone have any pointers since I don't particularly want to be spending £80 an hour trying to replicate if I can give the guy a bit more direction. Many thanks again in advance.
I have an 8 year old (trouble free!) Keston 80 condensation boiler. I believe it is a closed system (I have no header tank but do have two cylinders (expansion vessels?? - one white one red) attached to the pipework. There is a pressure gauge attached to a pipe leading to the red one with a marker around the 1.5 mark. The boiler does my hot water and my underfloor water pipe central heating.
A couple of days ago, the boiler was running but then made a number of alarming coughing/pipe banging noises. When I got to it it has fired down and everything seemed ok. The pressure was normal around 1.3 (it normally rises to 1.5 during running).
Over the next day or so, I ran the boiler for the odd 10-15 minutes without being able to replicate but last night as I was trying again, there was what I can describe as a sucking noise from the boiler followed by two 'thwock-thwock' noises. At each 'thwock' the pressure gauge shot momentarily over 2 and then it fired down and the gauge went back to normal. There were a couple of after noises from the pipe work like it was coughing. I turned it off and on and it was happy to fire up again but I have since set it to off.
I will obviously get someone round, but does anyone have any pointers since I don't particularly want to be spending £80 an hour trying to replicate if I can give the guy a bit more direction. Many thanks again in advance.
