myson apollo 40si keeps cutting out, I thought it maybe the air pressure sw?
Myson apollo 40si keeps cutting out. I thought it was the air pressure switch as unable to get it started. The hose was found perished and replaced it. Boiler started up. left running, then I switched it on and off several times all was okay. However cut out again. ANy ideas, is it the thermocouple or the over run thermostat or gas valve
struggler61, March 2009