I've a Triton thermostatic mixer that's only been used three times in six
years and can only get cold water from it. The water flow from the valve is
constant, even when turning the temperature control from cold to hot. I've
removed it from the wall and both hot and cold feeds are fine so it's not an
airlock. If I blow into the hot water side of the valve it's totally
blocked.

Anyone have any thoughts what the problem could be?

Roly

In an earlier contribution to this discussion,
Roly wrote:

I've a Triton thermostatic mixer that's only been used three times in
six years and can only get cold water from it. The water flow from
the valve is constant, even when turning the temperature control from
cold to hot. I've removed it from the wall and both hot and cold
feeds are fine so it's not an airlock. If I blow into the hot water
side of the valve it's totally blocked.

Anyone have any thoughts what the problem could be?

Roly

It's probably all gunged up inside through lack of use - with the
thermostatic bit stuck in a position which blocks the hot inlet. Can you
dismantle it and clean it out? If it's scaled up, soak the bits in vinegar
over night.
--
Cheers,
Set Square
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