Troubleshooting
3
Subject to modifications resulting from technical improvements!
Buderus Ltd. • http://www.buderus-domestic.co.uk
30
Servicing manual for wall-mounted condensing gas boiler 600 Series 11S/19S/24S/24C • Issued 02/2006
Fig. 27
Fault warning message 6L: Flame goes out during warm-up phase
Yes
No
No
No
Yes
Yes
Measure the gas connection
pressure
Gas-air ratio
OK?
600 Series
11S / 19S / 24S / 24C
OK
6 L
Flame goes out during warm-up
phase
"reset"
Is the gas-supply shutoff
valve completely open?
Remove the casing (page 48)
Put system into chimney sweep mode
Check gas-air injector for correct fitting
and possible clogging; check for correct
diameter
Check gas/air ratio as indicated in the
installation and servicing instructions
If the required connection
pressure is not available,
contact your gas utility
company
Adjust gas/air ratio as
indicated in the installation
and servicing instructions
Open gas valve
completely
Fit the casing
"reset"
Are the minimum-
pressure specifications being
observed (17 mbar min. for
natural gas)?