Riello 40 GS10 Installation, Use And Maintenance Instructions page 12

Once the operations are done, the control box's initial state must be restored using the resetting procedure
described above.
BUTTON PRESSED FOR
Between 1 and 3 seconds
More than 3 seconds
More than 3 seconds starting from
the visual diagnostics condition
The sequence of blinks issued by the control box identifies the possible types of malfunction, which are listed
in the table below.
SIGNAL
2 blinks

3 blinks

4 blinks

7 blinks

10 blinks


20008491
CONTROL BOX STATUS
Control box reset without viewing visual diagnostics.
Visual diagnostics of lock-out condition:
(LED blinks at 1-second intervals).
Software diagnostics by means of optical interface and PC (hours of
operation, malfunctions etc. can be viewed)
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).
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.
Min. air pressure switch does not open or light in the chamber before firing:
– air pressure switch faulty;
– air pressure switch incorrectly regulated.
Loss of flame during operations:
– poor burner regulation (insufficient gas);
– faulty or soiled gas valves;
– short circuit between ionisation probe and earth.
– Wiring error or internal fault.
PROBABLE CAUSE
10 GB