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Faults - Possible causes - Solutions
8.1 Tracing the causes of the malfunctioning
The control box features a diagnostics function through which
any causes of malfunctioning are easily identified (indicator: RED
LED).
To use this function, you must wait at least 10 seconds once it
has entered the safety condition (lockout), and then press the re-
set button.
The control box generates a sequence of pulses (1 second
apart), which is repeated at constant 3-second intervals.
Once you have seen how many times the light blinks and identi-
fied the possible cause, the system must be reset by holding the
button down for 1 - 3 seconds.
Tab. K
Below is a list of the possible methods for resetting the control
box and for using the diagnostics.
Tab. L
8.1.1 Control box reset
To carry out the control box reset, proceed as follows:
press the button for between 1 and 3s.
The burner restarts 2 seconds after the button is released.
In case the burner does not restart it is necessary to check if
the limit thermostat (TL) is closed.
8.1.2 Visual diagnostics
Indicates the type of burner malfunction causing lockout. To
visualise the diagnostics proceed as follows:
keep the button pressed for more than 3s. from the fixed red
led condition (burner lockout). A yellow light blinks to tell you
the operation is done.
Release the button once the light has blinked.
The number of blinks indicates the reason for the malfunc-
tioning (refer to the coding in Tab. N).
8.1.3 Software diagnostics
Gives an analysis of the life of the burner, through optical connec-
tions with a PC showing the working hours, number and types of
lockout, control box serial number etc.
To view diagnostics, proceed as follows:
keep the button pressed for more than 3 seconds from the
fixed red led condition (burner lockout).
A yellow light blink to tell you the operation is done.
Release the button for 1 second and then press again for
over 3 seconds until the yellow light blinks again.
Once the button is released, the red LED will flash intermit-
tently with a higher frequency: only now can the optical link
be activated.
Once the operations have been carried out, it is necessary to re-
set the initial state of the control box using the reset procedure.
8 Faults - Possible causes - Solutions
RED LED lit wait
for at least 10s
Lockout Press reset for > 3s Pulses 3s interval Pulses
Pressing the button Control box status
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 blinks at 1-second intervals).
More than 3 seconds starting from the
condition of visual diagnostics
Diagnostic software using an optical interface and PC
(possibility of displaying the hours the machine has been running, faults, etc..).
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