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8
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.
RED LED lit wait
for at least 10s
Below is a list of the possible methods for resetting the control
box and for using the diagnostics.
Pressing the button
From 1 to 3 seconds
More than 3 seconds
More than 3 seconds starting from the
condition of visual diagnostics
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. O).
Faults - Possible causes - Solutions
Press reset
Lockout
for > 3s
Control box status
Reset of the control box without visualisation of the visual diagnostics.
Visual diagnostics of the lockout condition:
(LED blinks at 1-second intervals).
Diagnostic software using an optical interface and PC
(possibility of displaying the hours the machine has been running, faults, etc..).
27
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.
Pulses
GB
3s interval
Pulses
Tab. L
Tab. M
20063795
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