Mend Heating, Home Heating Systems

Heating, Home Heating Systems
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Home Heating Systems

Mend Mend Heating, Home Heating Systems

Worcester Bosch 240 combi?

My central heating temp is fine but the hot water supply is hardly luke warm after an initial couple of minutes of very hot water.

Do I need a new secondary heat exchanger ?

Michael Gill
December 2019
First thing to try would be to let the entire central heating system cool down, then set central heating to off, (or choose a time when central heating is not programmed to come on), then turn on a hot tap to fire up boiler. Leave tap running for a few minutes, then feel the central heating output (CH Flow) pipe coming out of boiler. If this pipe is heating up, your problem will be a faultly diverter valve within the boiler. Try this and let us know if CH flow pipe reamians cool and we will need to look at other possible causes. I suspect that your boiler could be 20 years old and parts may be difficult to obtain.

Rupert
December 2019

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