Visual Diagnostic Control Box; Faults / Solutions - Riello BG7D Manuel D'entretien

5.1 VISUAL DIAGNOSTIC CONTROL BOX

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.
6.

FAULTS / SOLUTIONS

Below is a list of some of the causes and possible solutions to a series of problems that might be encountered
and could cause a failure to start or irregular burner operation.
A fault usually makes the lock-out lamp light which is situated inside the reset button of the control box
(4, fig. 1, page 2).
When lock out lamp lights the burner will attempt to light only after pushing the reset button. After this if the
burner functions correctly, the lock-out can be attributed to a temporary fault.
However, if lockout continues, you must determine the cause of the problem and take the action illustrated in the
solution column in the tables below.
3066
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-ventilation;
– 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
18 GB
2s
Pulses