When my central heating is put on for more than a short time (one or two
hours) the boiler invariably stops heating. Pressing reset on the boiler
forces it back into life.
The strange thing is that if I press 'boost' on the controller the
central heating it will go on for a full 60 minutes. After that if I
press boost again it'll go on perfectly for another hour, and so on
throughout the day.
So this suggests to me that the boiler is probably okay.
But as pressing the boiler's reset button sorts it out, this suggests
that it is a boiler problem.
Any ideas anyone?