20093868
64
GB
Operation, indication, diagnostics
8.3
Resetting of burner control
When a lockout occurs, the burner control can be immediately re-
leased by pressing the “RESET” button.
NOTE:
For the meaning of the diagnostic codes and errors, see the chap-
ter “
Error code list with operation via internal LED
” on page 62.
8.3.1
Diagnostics of cause of fault
After lockout, the red fault signal lamp remains steady on. In that
condition, visual diagnostics of cause of fault according to the error
code table can be activated by pressing the lockout reset button
(info button) for more than 3 seconds.
Pressing the lockout reset button (info button) again for at least 3
seconds, interface diagnostics will be activated.
If, by accident, interface diagnostics has been activated, in which
case the slightly red light of the signal lamp flickers, it can be deac-
tivated by pressing again the lockout reset button (info button) for
> 3 seconds.
The instant of switching over is indicated by a yellow light pulse.
Error code table
Tab. V
During the time the cause of fault is diagnosed, the control outputs
are deactivated
–
Burner remains shut down
–
External fault indication (alarm) at terminal X2-03, pin 3 steady
on
Diagnostics of cause of fault is quit and the burner switched on
again by resetting the burner control.
Press the lockout reset button (info button) for about 1 second (< 3
seconds).
Red blink code of fault signal lamp
Possible cause
2 x blinks
No establishment of flame at the end of the safety time
–
Faulty or soiled fuel valves
–
Faulty or soiled flame detector
–
Poor adjustment of burner, no fuel
–
Faulty ignition equipment
4 x blinks
Extraneous light on burner startup
5 x blinks
Time supervision air pressure switch
–
Air pressure switch welded in working position
7 x blinks
Too many losses of flame during operation (limitation of repetitions)
–
Faulty or soiled fuel valves
–
Faulty or soiled flame detector
–
Poor adjustment of burner
8 x blinks
Free
9 x blinks
Free
10 x blinks
Wiring error or internal error, output contacts, other faults
12 x blinks
Valve proving
–
Fuel valve 1 leaking
13 x blinks
Valve proving
–
Fuel valve 2 leaking
14 x blinks
Error in connection with valve closure control POC
15 x blinks
Error code
15 (e.g. depending on type of program module)
Error code 20: Failure of gas pressure switch-min
Error code 22: Error of safety loop
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