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no hot water from my ariston euro combi boiler?

have heat but no hot water but the taps run with cold water

joseph clarke
October 2005
AristonHeating, Home Heating SystemsHot Combi Boiler Taps
When this happened to mine it was a split diaphragm in the divertor valve which is what switches the water to be heated instead of the radiators whenever the tap is opened. You can replace the diaphragm with a service kit.

Have a look to see if the valve moves up and down when you open the hot tap - it should press a block of 3 microswitches. If not its likely to have split.

Adam
October 2005

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