Search results

What would you say the best/easiest way is to fault find a sludged up heat exchanger that could be causing no/poor circulation and boiler overheat/lockout?

Hello all, I have a question and have searched by cannot find an answer. I have a combi boiler in my house, I was wondering how it works. When you open a hot tap, the boiler fires up and hot water is shortly deliered at the hot tap. My boiler has no intermittent or perm pilot btw...