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    Vaillant eco tec 838 hot water problems.

    Hi all, Having hot water problems with hot water on above boiler heating working OK but hot water burner starts and then stops with the message water deficiency , I have flushed the secondary heat exchanger out and all pipes seem to have a good flow could it be the flow sensor ? Any help will...
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    Vaillant Eco tec Exclusive 838 help

    Hi can any one tell me if pre heated water (from solar panel) can be routed into the cold feed on the above boiler thus using less gas for domestic hot water. Thanks Paul
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