ON A FROSTY MORNING THE BOILER WILL NOT START UP ON TIMER BUT ON A NORMUL MORNING IT WORKS.
AS THIS BOILER GOT A BILT IN FROST STAT IF SO COULD THIS BE DOING IT
could be that your frost stat is incorrectly wired ?
tim, August 2009
sounds like condensation in the air pressure switch tubes.
Ian, August 2009
No the Frost Stat would not cause this to happen, you should get a Registered Gas Engineer to look at the boiler, it could be an ignition fault, made worse by cold damp mornings
