having changed the pump last year after a small leak blew the pump up, and also a circuit board in the boiler, very troublesome to get the system running again, boiler would fire up for a few seconds then would cut out seemingly over heating. anyway got it all running ok apart from loud banging from the boiler.
Since reading through the forum it seem that it is pobably lack of water either, blockage or whatever. the pump i fitted is a Grundfos which has three speeds, i have always run it on the second speed, would it help to run it on the fastest speed to increse the flow to the boiler thus eliminating the hot spots?
malc
Since reading through the forum it seem that it is pobably lack of water either, blockage or whatever. the pump i fitted is a Grundfos which has three speeds, i have always run it on the second speed, would it help to run it on the fastest speed to increse the flow to the boiler thus eliminating the hot spots?
malc