While you wait for answers, we may have found some information which could help you.
Click here for Worcester Runs Boilerhot water but no heating?
whats wrong with my Worcester Danesmoor 12/14?
Where can I get parts for a Worcester Heatslave boiler?
how do I remove the burner from my Worcester Bosch 15/19 - ?
Worcester heatslave 20/25?
worcester danesmoor 20/25, lockout/repriming tigerloop and pump?