14
BURNER START-UP CYCLE DIAGNOSTICS
During start-up, indication is according to the following table:
COLOUR CODE TABLE
Sequences Colour code
Pre-purging
Ignition phase
Operation, flame ok
Operating with weak flame signal
Electrical supply lower than
~ 170V
Lock-out
Extraneous light
Key: Off Yellow Green Red
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 1
0 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), w
hich is repeated at constant 3-second intervals.
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.
Press reset
for > 3s 3sPulses Pulses
RED LED on
wait at least 10s
Interval
Lock-out
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 rele
ased.
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 (bur
ner 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 malfunction, according to the coding system
indicated in the table on page 15.
SOFTWARE DIAGNOSTICS
Reports burner life by means of an optical link with the PC, indicating hours of operation, number and type of lock-outs, 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 (bur
ner 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 t
he 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 d
iagnostics.
More than 3 seconds
Visual diagnostics of lockout condition:
(Led pulses at 1-second intervals).
More than 3 seconds starting from the visual
d
iagnostics condition
Software diagnostics by means of optical interface and PC (hours of operation, malfunc-
tions etc. can be viewed)
The sequence of pulses issued by the
control box identifies the possible types of malfunction, which are listed in the table on page 15.
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