Thanks for the suggestion but that is a very last resort. Will likely invalidate any boiler warranty. The leak is almost certainly external caused when TW upgraded the system as we never had an issue before. I’ll keep on with them.
Thanks for your reply. No the pressure relief is dry, and I topped up well within the parameters. There is no leak internally anywhere that we can see, but are losing about .1 bar of pressure every day.
Thames Water recently did a 6 week upgrade of our street's water supply. They said it would increase our pressure. Since then (3 weeks ago) our boiler has shut off twice due to low pressure, easily rectified by topping up with the filling loop. Thames Water say it cant be due to their work and hence...
