Water in cold water tank is warm

I suspect I've got a leaking indirect coil in the hot water tank as the cold water is warm and the tank has overflowed recently, the overflow from the hot water goes back into the cold water. I've replaced the termostat on the hot water tank, is there any good diagnostic to prove that a leaky coil is the problem? I think I can hear the header tank for the heating system dripping and I presume that means I'm in trouble and I need a new tank, last time it took ages to get as its a funny smaller tank or is the coil repairable?

I'll be checking this tomorrow when the place is a little quieter and I can play with the tank thermostat post showers, but is there much else to do but call in the plumber?.

Somewhat glumly

Peter

Reply to
pibbotson
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Replace the cylinder yourself?

Reply to
Andy Hall

Assuming the F&E tank is above the cold water tank, tie up the ball valve on the F&E and see if the level drops??

AJH

Reply to
AJH

Tie up the ball valve in the heating header tank. if that tank overflows then you have a leak between primary and secondary circuits. Otherwise the the boiler overflow is warming the tank water and you need to find why that is happening - usually a blockage somewhere.

Bob

Reply to
Bob Minchin

Thanks all

Reply to
pibbotson

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