Worcester Greenstar FS 42 CDi Regular Boiler Fault Codes

Code	Description	Check, repair/replace as necessary
A8	EMS coms error	check electrical connections
b1	Code plug not detected	Insert code plug correctly
b2,b3,b4, b5,b6	Data error	software/PCB error
b7	Burner control error	software/PCB error
C6	Fan defect	check fan, lead and connector
D5	Condensate overflow	check condensate pump and leads.
EA	Burner control lockout	check gas supply and igniter electrode
E2	Primary NTC defect	check NTC and lead.
E9	OH stat tripped	Check system pressure and pump
F0	Internal error	check electrical connector contacts.
F1	ROM check error	software/PCB error.
F7	Flame detected after appliance shut off	check electrode assembly, dry PCB
FA	Flame detected after gas shut off	check gas valve and leads.
Fd	Reset button pressed	press reset button again.