While you wait for answers, we may have found some information which could help you.
Click here for Boiler Central Heating Hot Waterhow can i get my heating working again he plus 31c?
finding fault with grant combi 26e?
Grant Euroflame 70/90 oil boiler ?
my grant vortex eco boiler smells of oil?
How do I stop my grant euroflame 50/70 from locking out?
got hot water but no heating?