right so my boiler will start if i bang the box with the PCB inside, i've taken the cover off and checked the connections but cant seem to find anything loose.. i've also used a can of pressured air to clean the inside out.. still no joy but comes on for around 5 minutes if i bang it.
noticed...
The Make of my Boiler is: Stelrad Ideal nf50
nf50 natural gas: 116782A01
Problem: boiler starts from cold, heats radiators up until all hot, then after 20 minutes it stops and will not come back on again leaving the radiators to go cold.
it wont fire again until all radiators freezing...
i seem to be havin a very similar problem.. radiators get hot then around an hour into heating, the boiler goes off and the radiators get cold, even tho the room stat is on full and the CH is on Run mode.. :( takes around 2 hours before the boiler restarts by this time all rads are cold...
could you elaborate a little on that please as i'm not sure what you mean.. is it repairable?
as for the boiler make & model lol i'm at work and asked my wife to give me the model number from it.. i had no idea honeywell dont make boilers :) i'm a printer not a plumber hehe :)