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I have an Ideal Classic LXFF & FF fanned flue boiler which is now problematic with hot water.

When I select hot water on the timer it gives me central heating but when I select central heating I get central heating, but no hot water in either case.

Any ideas? I have changed the timer for a new one as it was suggested this might be faulty.

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Look to the 3point/diverter valve

[quote="jcs"]I have an Ideal Classic LXFF & FF fanned flue boiler which is now problematic with hot water.

When I select hot water on the timer it gives me central heating but when I select central heating I get central heating, but no hot water in either case.

Any ideas? I have changed the timer for a new one as it was suggested this might be faulty.[/quote]

Take a look at ur 3 port motorised valve, cos it sounds as the switch for hot water is faulty. however i think on its rest state the valve is on hot water.