ALPHA 280E - COMBI BOLER
When my CH & or DHW is on the boiler fires then when reaches temperature stops - it then fires again and during that time the warning light & overheat thermostat light come on, gas goes out then lights go out then boiler fires again - continues like this at intervals while boiler is on. Recently had a new pump & Overheat thermostat fitted. I think that the system radiators are hotter than normal

James Meek, December 2006

Sorry cant answer your problem, but mine is that the heating will come on when put on constant but after a while (15 mins'ish) at temp the pressure meter is very high and after a while the orange light comes on and the system dies. The pressure seems to be set by the temp thermostat. "Very hot" sends the meter beyond setting 4. Any clues as to what is wrong? Alpha 240E

Herbie, December 2006

If fan comes on without burner - is switch made at diaphram ? - if not means not enough pressure from pump - could be blocked or worse needs replaced

Jim, December 2006

Maybe the diaphram we had same problem and when we changed that it was ok. though we are having trouble with same boiler at the moment again and it just wont ignite at all. :( Fan comes on but nothing else happens you got any clues? Its Freezing!!

dave, December 2006