Buderus Logano plus GB312 Installation Manual page 80

10
Troubleshooting
Type Display
1)
code Fault code Cause
B 6A 577
Tab. 17 Fault messages
1) V = locking; B = inhibiting; BC = operating code
80
Description
No flame detected Ionization current
within the safety < 1.1 μA during
period. safety period.
Logano plus GB312 - Technical specifications are subject to change without prior notice
Testing
sequence/Cause Action
Gas supply/dynamic If pressure too low,
pressure too low. inform gas com-
pany.
Gas pressure regu- Fit gas pressure
lator not set to regulator adjusted
required gas flow to required gas flow
rate. rate; inform gas
company if neces-
sary.
Cross-sectional area
Fit adequately
of gas pipe insuffi-
dimensioned gas
cient (min. cross-
piping.
sectional area of gas
supply pipe).
Air in gas pipe.
Purging the gas
pipe.
Flue back-pressure
Fit properly dimen-
too high due to
sioned and config-
unfavourable config-
ured flue system.
uration (too many
bends, cross-sec-
tion too small, too
long, horizontal runs
too long).
Clean/replace igni-
Ignition/ionization
tion/ionization elec-
electrode dirty.
trode.
Establish good
Check connecting
electrical contact.
lead between SAFe
Replace lead if nec-
and ionization elec-
essary.
trode for poor con-
tact, breaks and
damage.
Align burner rod/
Check electrode
electrode. Replace
gaps and ignition/
defective electrode.
ionization electrode
for damage.
Establish good
Check connecting
electrical contact.
lead between igni-
Replace lead if nec-
tion transformer and
essary.
ignition electrode for
poor contact (at
electrode and trans-
former), breaks and
damage.
(to be continued
on next page)