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Mend Combi Boiler Years Works

noisy combi boiler?

can some one help? we have the about 7 years old Gas-fired combi Boiler Powermax 155. it works okay, but It is always making humming noise when it's switched on,even though we don't use any hot water and cetral heating. The noise is gone when the electric is switched off.

kevin
April 2009
can you give me more detail advice? do I need change that pump?

kevin
May 2009
this is the noise of a working pump inside the combi boiler at the same time as the boiler is working it is using and consuming GAS

wirecutterman
April 2009

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