3066
18
GB
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.
The sequence of pulses issued by the control box identifies the possible types of malfunction, which are
listed in the table below.
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.
SIGNAL
PROBABLE CAUSE
2 pulses
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.
4 pulses
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.
7 pulses
Loss of flame during operations:
– poor burner regulation (insufficient gas);
– oil valve faulty or dirty;
– flame detector faulty or dirty.
8 pulses
Check and monitor oil heater (if fitted):
– heater or control thermostat faulty.
2s
Pulses
Pulses
RED LED illuminated
press reset for 3 sec.
Interval
ATTENTION
