GB
20027974
14
SOFTWARE DIAGNOSTICS
Reports the life of the burner 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 (burner lock-out) 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 opti-
cal link be activated.
Once the operations are done, the control box’s initial state must be restored using the resetting procedure
described above.
The sequence of pulses issued by the control box identifies the possible types of malfunction, which are
listed in the table below.
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 lock-out 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)
SIGNAL PROBABLE CAUSE
2 pulses
The flame does not stabilise at the end of the safety time:
– faulty ionisation probe;
– faulty or soiled gas valves;
– neutral/phase exchange;
– faulty ignition transformer
– poor burner regulation (insufficient gas).
3 pulses
Minimum air pressure switch does not close:
– make sure VPS trips to produce lockout;
– air pressure switch faulty;
– air pressure switch incorrectly regulated;
– fan motor does not run;
– maximum air pressure switch operating.
4 pulses
Min. air pressure switch does not open or light in the chamber before firing:
– air pressure switch faulty;
– air pressure switch incorrectly regulated.
7 pulses
Loss of flame during operations:
– poor burner regulation (insufficient gas);
– faulty or soiled gas valves;
– short circuit between ionisation probe and earth.
10 pulses
– Wiring error or internal fault.
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