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  1. M

    Worcester 30si (Bubbleing noises in boiler, no CH or DHW)

    Hi, I have a problem with a Worcester Bosch Greenstar 30si, I turned the CH on this morning and noticed a strange noise coming from the boiler, it sounds like bubbleing water/air in the wall mounted boiler whenever the CH is on or I turn the taps on for hot water (The hot water runs cold btw...
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