While you wait for answers, we may have found some information which could help you.
Success
Message
my rads are hot at top and cold at bottom how can i fix them ?
hot water?
ignition lock out comes on ?
how can i remove fan?
Hot water issue?
Heating wont turn off?
electric cutout?
central heating?
domestic hot water works but the heating shuts down?
Water goes hot then cold when running tap?
timer ?
can i still have my central heating on while i have water leak?