Riello 3438964 Installation, Use And Maintenance Instructions page 49

4.9 BURNERS START-UP CYCLE DIAGNOSTICS
During start-up, indication is according to the followin table:
Sequences
Pre-purging
Ignition phase
Operation, flame ok
Operating with weak flame signal
Electrical supply lower than ~ 170V
Lock-out
Extraneous light
Key:  Off
4.10 OPERATING FAULT DIAGNOSTICS
The control box has a self-diagnostic system, which easily allows identifying the operating faults (RED LED signal).
ITo use this function, wait at least ten seconds from the safety lock out, and then press the reset button for a minimum of 3 sec-
onds.
After releasing the button, the RED LED starts flashing as shown in the diagram below.
RED LED on
wait at least 10 s
The pulses of the LED constitute a signal spaced by approximately 3 seconds.
The number of pulses will provide the information on the possible faults, according to the table below:
SIGNAL
2 flashes
3 flashes
4 flashes
7 flashes
8 flashes
10 flashes
2915844
COLOUR CODE TABLE
 Yellow
Press button
for > 3 s
The flame does not stabilise at the end of the safety time:
– faulty flame sensor;
– faulty or soiled oil valves;
– faulty ignition transformer
– poor burner regulation.
– Not used.
– Light in the chamber before firing.
Loss of flame during operations:
– poor burner regulation;
– faulty or soiled oil valves.
– Faulty thermostat for oil permissive signal;
– Heating resistances blown.
– Wiring error or internal fault;
– Presence of electromagnetic disturbance: use the radio disturbance protection kit.
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 Green  Red
Interval
Signal 3 s
PROBABLE CAUSE
15 GB
Colour code
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Signal