Please advise me, my boiler both heating & water seems to have a mind of its own,, it chooses to come on when it feels like it.
To make it come on i have to switch mains off and on and then and i mean sometimes it lights up and works.
The pressure is fine and remains as 1 bar.
When its working both pump and fan is humming away loverly, then for no reason a few hours later it just stops. Sometimes i can switch off and on and get it back on but most of the time it just needs a day or so to want to have another play
In addition - when i manage to get it to have a go it dosnt always go all the way, eg pump goes for say 20 seconds and stops and the fan dosnt come on at all.