I have a Remeha Avanta Combi boiler.
When the central heating system is on there is a whistling sound coming from the boiler.pipework area. When the domestic hot water kicks in the noise stops.
The radiators get very hot and I have tried to bleed them. All seems ok with them
Has anyone any ideas what to do next?
Maybe it is time to call the engineer out as the boiler is only 7 months old.
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