Matt wrote:
John Rumm wrote:

It could be the cylinder thermostat cutting out too soon (if there is
one!)

Need to know more about the arrangement of valves etc, or if the
water is heated just by a gravity circulation loop.


Afraid that I haven't a clue how it's all plumbed in - it's a
gas-fired boiler on the ground floor. I do know that you can't just
turn the heating on, you need to turn the hot water on first and then
turn on the heating. Not sure if that's a clue or not?

What would determine how it's plumbed in? I think (from memory) that
there's a red wheel valve on one of the large pipes to (or maybe from)
the boiler, but I'm not 100% certain.

Thanks for your help.

I'm rather concerned that there's a leak somewhere to be honest, but
I'm hoping it's something far less serious and easier (and cheaper!)
to repair.

A leak is probably the cheapest job to repair...now if it's a faulty
boiler....

That said, it's highly unlikely to be a leak - she had hot water this
morning, and if it was a leak, the boiler would be fired up almost
continuously, heating the replacement water lost from the cylinder

--
Phil L
RSRL Tipster Of The Year 2008