While you wait for answers, we may have found some information which could help you.
Success
Message
Location of pilot light Thorn Housewarmer Super back boiler?
unable to light pilot on thorn m44/54b boiler?
thermocouple?
thorn back boiler housewarmer s?
how can i fix my thorn M44/54 gas boiler?
I have hot water but heating is not working ?
thorn m44 boiler fault?
thorn apollo boiler no gas coming through ?
How do I light it?
can I fix my internal flue hood on Thorn Olympic 15/60?
apollo boiler banging noises ?
what boiler would i replace my thorn 44/54 with?