I have a indirect combination cylinder in the attic and the cold water header tank keeps overflowing.
I've changed ball valve but this has not cured the problem.
When i draw hot water out of the hot water tank,the level in the cold water header tank returns to normal but within about 24-48 hrs the water level has risen agian and overflowing.
The cold water tank overflows even when the central heating is not on.
The ball valve is not leaking at all.
Im thinking it might be a hole in the coil inside the hot water tank.
Thanks for any help.
I've changed ball valve but this has not cured the problem.
When i draw hot water out of the hot water tank,the level in the cold water header tank returns to normal but within about 24-48 hrs the water level has risen agian and overflowing.
The cold water tank overflows even when the central heating is not on.
The ball valve is not leaking at all.
Im thinking it might be a hole in the coil inside the hot water tank.
Thanks for any help.