While you wait for answers, we may have found some information which could help you.
Britony Combi Se boiler 40 & 80 lights flashing?
Have I got got a faulty programmer?
Vaillant F22 fault?
Fan tries to run every 15 seconds then stops immediately?
Greenstar 25 combo boiler?
Firebird super Q 50/82?
How do I work my Storad storage heater?
Worcester Bosch 532/i Combi Boiler?
Ideal Isar H30?
British Gas 532/i Gas Combi Boiler?