Riello BG5 Instrucciones De Instalación, Uso Y Mantenimiento página 18

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5.1
CONTROL BOX VISUAL DIAGNOSTIC
The control box has a diagnostic function that can identify the likely causes of any malfunctions (indicator:
RED LED).
In order to be able to use this function, press and hold the reset button for at least 3 seconds from when the
appliance is made safe (lock-out).
The control box sends a sequence of pulses that are repeated at 2-second intervals.
RED LED illuminated
press reset for 3 sec.
The sequence of pulses issued by the control box identifies the possible types of malfunction, which are
listed in the table below.
SIGNAL
2 pulses
4 pulses
7 pulses
8 pulses
ATTENTION:
To reset the control box after the diagnostics display, press the lockout-reset button.
3402
The flame does not stabilise at the end of the safety time:
– flame detector faulty or dirty;
– oil valve faulty or dirty;
– faulty ignition transformer;
– poor burner regulation.
Light present in the chamber before the burner's switching on or off:
– presence of a strange light before or after the limit thermostat switching
over;
– presence of a strange light during pre-purging;
– presence of a strange light during post-ventilation.
Loss of flame during operations:
– poor burner regulation (insufficient gas);
– oil valve faulty or dirty;
– flame detector faulty or dirty.
Check and monitor oil heater (if fitted):
– heater or control thermostat faulty.
Interval
Pulses
PROBABLE CAUSE
16 GB
2s
Pulses

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