Troubleshooting
3
Subject to modifications resulting from technical improvements!
Buderus Ltd. • http://www.buderus-domestic.co.uk
26
Servicing manual for wall-mounted condensing gas boiler 600 Series 11S/19S/24S/24C • Issued 02/2006
Fig. 23
Continuation of fault warning message 6A: F1 fuse defective, or no ionisation message after ignition
Yes
Replace gas-burner assembly
A
No
No
No
Yes
Yes
Check switching contact of floor
thermostat (page 53)
Switch contact
OK?
Check lead connections on gas
burner subassembly
Wiring connec-
tions OK?
Activation
OK?
Fit the casing
"reset"
600 Series
11S / 19S / 24S / 24C
OK
22
Check gas-burner subassembly for
correct activation (page 60)
Connect switch contact
correctly
Connect wiring correctly