pressure to high in potterton lynx 2 boiler?
The pressure gauge on my potterton Lynx2 boiler just keeps rising untill it goes off the dial! (then i turn it off) this happens when i use the central heating, but is ok when i use the hot water. any ideas?
not looking to fix it myself, i would just like an idea of whats going on before i call out an engineer.
Rich, November 2007
