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 ?
ignition lock out comes on ?
can i still have my central heating on while i have water leak?
hot water?
central heating?
domestic hot water works but the heating shuts down?
Hot water issue?
Water goes hot then cold when running tap?
timer ?
Heating wont turn off?
how can i remove fan?
electric cutout?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix plumbing.