Vaillant 242 Combi fitted approx 3 years ago. Gradual (?) loss of hot water flow rate (down to 5L min). Lowish pressure incoming mains now sorted with new plastic pipe to mains. Gas pressure checked OK. Turbulence noise (?) apparent in region of hot water heat exchanger. Low pressure out of hot water even with boiler turned off. Any help appreciated!
- posted
20 years ago