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