On Saturday, 9 March 2019 19:56:59 UTC, Roger Mills wrote:
On 09/03/2019 18:25, John Rumm wrote:

So far all the normal tricks don't seem to be doing it!

Short version:

There is a leak somewhere in my central heating system - its losing
pressure regularly, and needs topping up with at least a couple of
litres a day.

Do you have a means of isolating individual zones - in order to narrow
down the problem area? I'd be surprised if you didn't have strategically
located quarter turn valves for the purpose.

all of which have seized beyond all hope.


NT