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  1. J

    Noisy Boiler

    Hi There, Got a Sime 100 Format C, been OK for 7 years, now developed a problem, when CH is switched on and after say 5 mins a screeching noise is coming from the boiler, turn on the hot water tap it stops, turn off the hot water tap it restarts screeching but much louder, only way to stop the...
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