17
BURNER START-UP CYCLE DIAGNOSTICS
During start-up, the indications are explained in the following table:
RESET OF CONTROL BOX AND DIAGNOSTICS USE
The control box supplied features a diagnostics function, through which any causes of malfunctioning can be easily identified (indicator:
RED LED
signal).
To use this function, wait at least 10 seconds from when the safety condition has been set (
lockout
), then press the reset button.
The control box generates a sequence of led pulses (1 second apart) that is repeated at constant intervals of 3 seconds.
Once the number of LED pulses has been visualised, and the possible cause identified, it is necessary to reset the system, keeping the button
pressed for 1-3 seconds.
Below, a list of the possible methodologies for carrying out the resetting of the control box and for using the diagnostics.
CONTROL BOX RESET
To reset the control box, proceed as follows:
-
Press and hold the button for 1-3 seconds.
The burner starts up again, 2 seconds after the button is released. If the burner does not restart, make sure the limit thermostat is closed.
VISUAL DIAGNOSTICS
Indicate the type of burner fault that leads to the lockout.
To display the diagnostic, proceed as follows:
-
Keep the button pressed for more than 3 seconds from when the red LED (burner lockout) switches on.
The end of the operation will be shown by a yellow led pulse.
Release the button when you see the flashing. The number of flashes indicates the cause of the malfunctioning, on the basis of the code
given in the table on page 18.
SOFTWARE DIAGNOSTICS
Gives an analysis of the life of the burner, through optical connections with a PC showing the working hours, number and types of lockout, control
box serial number etc.
To display the diagnostic, proceed as follows:
-
Keep the button pressed for more than 3 seconds from when the red LED (burner lockout) switches on.
The end of the operation will be shown by a yellow led pulse.
Release the button for 1 second, then press it again for more than 3 seconds, until you see another yellow flash.
When you release the button, the red led will flash intermittently with high frequency: only then is it possible to insert the optical connection.
When the operation is completed, it is necessary to reset the start-up condition of the control box, using the reset procedure described above.
The sequence of led pulses issued by the control box identifies the possible types of fault, which are listed in the table on page 18.
COLOUR CODE TABLE
Sequences
Colour code
Pre-purging
Ignition phase
Operation, flame OK
Operation with weak flame signal
Electrical supply lower than ~ 170V
Lockout
Extraneous light
Key to layout:
Off
Yellow
Green
Red
In the event of a burner lockout, more than two consecutive burner reset operations could cause damage to the installation. On the
third lockout, contact the Aftersales Service.
If further lockouts or burner faults occur, interventions must only be made by qualified, authorised personnel (as indicated in this man-
ual, and in compliance with the laws and regulations currently in force).
PRESSURE ON THE BUTTON
STATE OF CONTROL BOX
From 1 to 3 seconds
Reset of the control box without visualisation of the visual diagnostics.
More than 3 seconds
Visual diagnostics of the lockout condition:
(led flashes at 1 second intervals).
More than 3 seconds, starting from the condition
of visual diagnostics
Software diagnostics, with the help of optical interface and PC
(possibility to visualise the working hours, irregularities, etc.)
Press reset
for > 3 s
3 s
led pulses
led pulses
RED LED illuminated
wait at least 10s
Interval
Lockout
