While you wait for answers, we may have found some information which could help you.
Click here for Model Buy Replacementhow can i fix my thorn M44/54 gas boiler?
unable to light pilot on thorn m44/54b boiler?
I have hot water but heating is not working ?
thorn back boiler housewarmer s?
thorn apollo boiler no gas coming through ?
what boiler would i replace my thorn 44/54 with?