is not a combi- but i do have additional solar hot water system -
the water seems to heat up in the water tank but when we use either in the shower or through the taps , it runs nice and hor for a few minutes and then starts coming cold.
if we wait for 20 odd minutes the same happens - first hot and then starts running cold.
my local plumber has put in a new diverter valve - but the problem remains
no i do not rely on the solar - i have the boiler set on a timer for the hot water- at present i have the immersion on as well - but though the water in the tank is hot and does run hot for a few mionutes - after that it starts running cold. the water does come out hot at first but it starts running cold - every where- the taps and shower inthe bathroom, also the kitchen and all of downstairs - there is no reduction in the pressure of the water - it does run fast but it just goes cold after a few minutes and i do not understand why.
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