When I turn on my hot water tap, the combi boiler fires up its usual way and supplies hot water but after 1 minute exactly the boiler shuts down and I then have cold water coming from the hot tap. Can anyone please suggest what the problem may be? Thanks, M.
it maybe a blocked heat exchanger or a fauty diaghram does the central heating still work and does the boiler show a flame after u keep tap running and the central heating is on
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