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4.7 RESETTING THE CONTROL BOX AND USING DIAGNOSTICS
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 reset button.
The control box generates a sequence of pulses (1 second apart), which is repeated at constant 3-second inter-
vals. Once you have seen how many times the light pulses and identified the possible cause, the system must
be reset by holding the button down for between 1 and 3 seconds.
RED LED on
wait at least 10s
Lockout
Press reset
for > 3s
Pulses
Interval
3s
Pulses
The methods that can be used to reset the control box and use diagnostics are given below.
RESETTING THE CONTROL BOX
To reset the control box, proceed as follows:
- Hold the button down for between 1 and 3 seconds.
The burner restarts after a 2-second pause once the button is released.
If the burner does not restart, you must make sure the limit thermostat is closed.
VISUAL DIAGNOSTICS
Indicates the type of burner malfunction causing lockout.
To view diagnostics, proceed as follows:
- Hold the button down for more than 3 seconds once the red LED (burner lockout) remains steadily lit.
A yellow light pulses to tell you the operation is done.
Release the button once the light pulses. The number of times it pulses tells you the cause of the malfunc-
tion, according to the coding system indicated in the table on page 10.
SOFTWARE DIAGNOSTICS
Reports burner life by means of an optical link with the PC, indicating hours of operation, number and type of
lockouts, serial number of control box etc ...
To view diagnostics, proceed as follows:
- Hold the button down for more than 3 seconds once the red LED (burner lockout) remains steadily lit.
A yellow light pulses 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 pulses again.
Once the button is released, the red LED will flash intermittently with a higher frequency: only now can the
optical link be activated.
Once the operations are done, the control box’s initial state must be restored using the resetting procedure
described above.
BUTTON PRESSED FOR
CONTROL BOX STATUS
Between 1 and 3 seconds
Control box reset without viewing visual diagnostics.
More than 3 seconds
Visual diagnostics of lockout condition:
(LED pulses at 1-second intervals).
More than 3 seconds starting from
the visual diagnostics condition
Software diagnostics by means of optical interface and PC (hours of
operation, malfunctions etc. can be viewed)
