16
B
A
Fig. 14
1.
Hold down reset button
B
for approx. 5 s (
>
3 s).
2.
A flash code is then shown.
The number of flashes in a sequence indicates the
type of fault. For an explanation, see the table in
chapter "Faults with flash code indication".
3.
To reset the burner and exit the fault display, press
the reset button for approx. 1 s (<3 s).
LED colour
Operating condition
Yellow, flashing
Ignition phase pre-purge, ignition activated
Green, continuous
Operation, flame stable
Green, flashing
Operation, poor flame stability
Yellow-red, flashing alternately
Undervoltage (<195 V)
Red, continuous
Fault, burner locked out
Red, flashing
Fault code indication (for an explanation, see chapter "Faults with flash
code indication")
Green-red alternately
External light before burner start
Red, flickering
Interface diagnosis was activated accidentally. Pressing the reset but-
ton once (approx. 3 s) starts the burner in standard mode.
Burner fault flowchart
System cold
LED on burner control unit illumi-
nates red
Reset burner control unit:
Press reset button for approx. 1 s
(<3 s)
Call up flash code:
Press reset button until LED
changes to yellow (approx. 5 s
(
>
3 s))
Burner start
Read off flash code and identify
its meaning in the diagnosis table
Remedy the fault
Burner control unit
Burner control unit
(cont.)
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