Hello,
Boiler (Not Combi) works fine on water only
when on water and heat cuts out after a couple of mins, 1 thing have noticed can hear the usual rush of water when switch to water and heat.
all radiators have been bled, did replace a couple of rads but system has worked since then...
I have an old concrete panel garage that is leaking in water through the edge at the bottom of a section of panel.
Any ideas to prevent until next year for replacement garage.
thank you