Troubleshooting
3
Subject to modifications resulting from technical improvements!
Buderus Ltd. • http://www.buderus-domestic.co.uk
16
Servicing manual for wall-mounted condensing gas boiler 600 Series 11S/19S/24S/24C • Issued 02/2006
Fig. 13
Continuation of fault warning message 4C: F2 fuse malfunction, or exhaust-gas sensor tripped
20
18
Fit the casing
"reset"
600 Series
11S / 19S / 24S / 24C
OK
No
Yes
Clean the heat exchanger
and burner, as indicated in
the installation and servicing
instructions
Open the heat exchanger and
burner, as indicated in the installation
and servicing instructions, and check
for dirt
19
Shut the heat exchanger and burner
A
Are the heat exchang-
er and burner soiled?
