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Worcester Green star 37cdi Pressure loss.
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<blockquote data-quote="Geoff1946" data-source="post: 505748" data-attributes="member: 28452"><p>I think there WILL be isolating valves. They are usually part of the actual pipe connection under the boiler and need a screwdriver or spanner to operate . If you find and close these it will tell you if its the boiler or external system pipework.</p><p></p><p>The rate you are losing water at it should be clearly visible somewhere if its a simple leak.</p><p></p><p>Rapid pressure loss when operating, over a few heating /cooling cycles, can mean the pressure vessel hasn't been pressurised with air, but if system pressure still drops when switched off, then its not that.</p><p></p><p>I have a Worcester Bosch 28SI boiler and I use only their own service tech's who really know their gear, but I have a service contract and I don't know if they do non-contract repairs.</p><p></p><p>One of the technicians told me that my boiler uses a heat exchanger which directly heats the DHW, rather than having the diverter valve/secondary HE system that many combi's use. I don't know if there is any possibility of a leak within the HE, between the heating and hot water sections on these, or whether your boiler works like that.</p></blockquote><p></p>
[QUOTE="Geoff1946, post: 505748, member: 28452"] I think there WILL be isolating valves. They are usually part of the actual pipe connection under the boiler and need a screwdriver or spanner to operate . If you find and close these it will tell you if its the boiler or external system pipework. The rate you are losing water at it should be clearly visible somewhere if its a simple leak. Rapid pressure loss when operating, over a few heating /cooling cycles, can mean the pressure vessel hasn't been pressurised with air, but if system pressure still drops when switched off, then its not that. I have a Worcester Bosch 28SI boiler and I use only their own service tech's who really know their gear, but I have a service contract and I don't know if they do non-contract repairs. One of the technicians told me that my boiler uses a heat exchanger which directly heats the DHW, rather than having the diverter valve/secondary HE system that many combi's use. I don't know if there is any possibility of a leak within the HE, between the heating and hot water sections on these, or whether your boiler works like that. [/QUOTE]
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Worcester Green star 37cdi Pressure loss.
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