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Visual indication
2 blinks
●●
3 blinks
●●●
4 blinks
●●●●
5 blinks
●●●●●
7 blinks
●●●●●●●
10 blinks
●●●●●●●●●●
38 / 40
Description
Burner in lockout during ignition
due to no flame signal at the end
of safety time (TSA)
Burner in lockout during pre-ven-
tilation phase due to no air
detection
Burner in lockout due to parasitic
light during the pre-ventilation
phase
Burner in lockout during pre-venti-
lation due to incorrect air pressure
switch signal
Burner in lockout during operation Air/gas ratio incorrect.
Burner in lock-out
Cause
No fuel
Ignition electrode cable and/or
flame sensor disconnected
Ignition electrode in the wrong
position
Worn out electrode
Damaged ignition electrode cable Replace
Ignition transformer faulty
Faulty equipment
Fuel valve malfunction
Air pressure switch with incorrect
setting
Air pressure switch malfunction
No air pressure switch signal after
detection time (t10)
Faulty equipment
Parasitic light
Air pressure switch in working
position before pre-ventilation
Flame sensor in wrong position
Worn out flame sensor
Damaged flame sensor insulation
cable
Flame disk or combustion heads
dirty or worn
Cam V set at or below cam III
value (servomotor)
Fuel valve malfunction
Faulty equipment
Wrong connections or internal
error, output contacts, other faults
Solution
Open the general supply/
check the fuel line pressure
Check connections
Check the position by referring
to the chapter "Disc-electrode
position"
Replace
Replace
Replace
Replace
Adjust
Replace
Check the integrity of the air hose
Replace
Eliminate
Replace
Adjust
Correct the position by referring to
the chapter "Disc-electrode posi-
tion", and check the signal (chap-
ter "Flame detection system")
Replace
Replace
Visually check and replace, if
necessary
Increase the index of cam V > III
by 5°/10°
Replace
Replace
Check wiring by referring to wiring
diagram
0006160660_202402
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