While you wait for answers, we may have found some information which could help you.
Click here for System Heating Waterthorn m44 boiler fault?
I have hot water but heating is not working ?
apollo boiler banging noises ?
can I fix my internal flue hood on Thorn Olympic 15/60?
thorn apollo boiler no gas coming through ?
what boiler would i replace my thorn 44/54 with?