Ionization Current - Buderus LOGANO PLUS GB312 Installation Instructions Manual

Display
1)
Type code Fault code
K 6A 577
L 6L 561
K 7A 550
Table 22 Fault messages
1) V = locking; B = inhibiting; BC = operating code
Logano plus GB312 – 6 720 647 367 (2012/11)
Cause Description
No flame detected within

Ionization current

the safety period. < 1.1 μA during safety
period.
5 power-up sequences The burner control unit
(power supply has switched off 5 times
disconnection during burner during the burner start-
start-up). up sequence.
Voltage too low. The power supply
voltage is too low.
Troubleshooting
Testing sequence/
Cause Measure
Gas supply/dynamic If pressure too low,
pressure too low. inform gas company.
Gas pressure regulator Fit gas pressure
not set to required gas regulator adjusted to
flow rate. required gas flow rate;
inform gas company if
necessary.
Cross-sectional area of Fit adequately
gas pipe insufficient (min. dimensioned gas piping
cross-sectional area of
gas supply pipe).
Air in gas pipe. Bleeding the gas supply
pipe
Excessively high flue Fit properly
system backpressure dimensioned and
through unfavorable configured flue system.
layout (too many
diversions; cross-section
inadequate or too long;
horizontal sections too
long).
Ignition/ionization Clean/replace ignition/
electrode dirty ionization electrode.
Check connecting lead Establish good electrical
between SAFe and contact. Replace lead if
ionization electrode for necessary.
poor contact, breaks and
damage.
Check electrode gaps and Align burner rod/
ignition/ionization electrode. Replace
electrode for damage. defective electrode.
Check connecting lead Establish good electrical
between ignition contact.
transformer and ignition If necessary, replace
electrode for poor line.
contact (at electrode and
transformer), breaks and
damage.
SAFe burner control unit Replace SAFe.
defective.
Ignition transformer Replace ignition
defective (delayed or transformer.
non-existent spark,
"violent" starttup).
Check the 120V power Reset burner control
supply to the control unit. unit.
Rectify power supply
problem.
The power supply voltage Ensure adequate power
must not drop below supply voltage.
102V.
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