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I have an old glow worm boiler, a honywell electronic timer next to the boiler but no central thermostat and a variable manual three way valve next to the cylinder, (input/CH/Hot Water).
The boiler will work satisfactorily for a couple of days or so then, for some reason not fire up although the pilot light is on. I can get it to restart by fiddling with the three way valve then turning the boiler on and off a few timed and for some reason it will then fire up and run OK for another day or so.
Has any one any ideas as to what I should try to solve this problem.
Any help would be appreciated.
The boiler will work satisfactorily for a couple of days or so then, for some reason not fire up although the pilot light is on. I can get it to restart by fiddling with the three way valve then turning the boiler on and off a few timed and for some reason it will then fire up and run OK for another day or so.
Has any one any ideas as to what I should try to solve this problem.
Any help would be appreciated.
