How can I fix an Alpha CB24 gas boiler GC No 4753215?
Boiler intermittantly stops working, red light on. Press reset and can hear ignition attempt. Flames come on, sparking continues for couple of seconds then cuts out again. Pump & fan run ok. Heat exchanger silent, heating and hot water work ok independantly most of the time. Faiiling 2 or 3 times a day.
Brian Johnstone
February 2009