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I have a Vaillant EcoTEC Plus 824. It's less than 2 years old.
I've noticed that when the radiator (CH) symbol starts flashing the boiler starts making a loud droning noise but immediately stops when the symbol stops flashing.
I'm assuming this might have something to do with the pump but can this be normal or does it need looking at? Is there anything I can do myself?
Incidentally, the bar is 1.9 which is a bit high isn't it?
Thanks and hope you can help.
I've noticed that when the radiator (CH) symbol starts flashing the boiler starts making a loud droning noise but immediately stops when the symbol stops flashing.
I'm assuming this might have something to do with the pump but can this be normal or does it need looking at? Is there anything I can do myself?
Incidentally, the bar is 1.9 which is a bit high isn't it?
Thanks and hope you can help.