Why is filling loop not repressurising boiler?
I have a gravity feed system. I have tried to repressurise my boiler, but when I opened the filling loop valves, nothing happened. I know the filling loop works as I’ve used it recently. The water in the cold water tank hasn’t frozen, but could the pipe between there and the boiler have frozen?
Advice from 1 local tradesperson
Yes it can be that problem
