Thanks for the reply..
When the hot water tap is shut off the LED on the board goes out and the main burner shuts down straight away. If I only open the hot tap for a short while, then the pilot doesn`t go out.If the hot water is running for about 3 mins or more, then the pilot goes out with...
Potterton Puma 80 combi boiler works fine for CH. When I turn the hot water tap on, the boiler fires up ok and the water gets hot (probably too hot) but when I turn the tap off the pilot goes out with the main burner.
Any suggestions?