boiler making very loud noises as if its air locked but no air at pump or at AAV. almost sounds like a bath filling its so loud. noise coming from heat exchanger area.
Thats called kettleing youll have to clens the system or change the heat exchanger you nearly change it yourself very easy
Philip murry
March 2010
Sorry this isnt the answer your looking for, but our heater has just developed the same problem over the last week or so. Is this a coincidence??, we live in co. meath. Perhaps it is something to do with our water supply, or gas supply
ollieinmeath
March 2010
yes the pump is running correctly and is heating house properly, just awful noise. like major airlocks.
johnny mc
March 2010
is the pump running?
Ian
March 2010
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