25
20115639
GB
Start-up, calibration and operation of the burner
7.13 Lockout types
Whenever a lockout occurs, the control box shows the reasons
for the fault (and the reasons can be identified by the reset push-
button colour). The sequence of pulses issued by the control box
of the LED in the reset push-button identifies the possible types
of fault, which are listed in the table below
Tab. H
The frequency of the flash of reset push-button for the status in-
dication, See “Fault diagnostics - lockouts” on page 20.
Lock-out description
Lock-out time
Led colour
Probable cause
Presence of extraneous
light during standby
After 25 seconds
– presence of a false flame signal before the heat re-
quest
Pre-heating not terminated
After 600 seconds
0.5 sec. ON
2.5 sec. OFF
– the short-circuit socket is not connected
Presence of extraneous light
detected during pre-purging
After 25 seconds
– presence of false flame signal during pre-purging
Extraneous light detected
during post-purging
After 25 seconds
– presence of false flame signal during post-purging (or
pre-heating if the short-circuit socket is not connected
The flame is not detected
after the safety time
After 5 seconds
from oil-valve starts
RED
Steady ON
– flame detector defective or dirty
– oil valve defective or dirty
– faulty ignition transformer
– badly regulated burner
– oil fuel not present
Flame failure during opera-
tion
After 3 recycles
– badly adjusted burner
– oil valve defective or dirty
– flame detector defective or dirty
Fan motor error
Immediate
– faulty fan motor
– fan motor not connected
Malfunction in the internal
control circuit that drives the
oil valve
Immediate
– faulty oil valve
– internal control circuit that drives the oil valve faulty
Eeprom error
Immediate
– faulty internal memory
WARNING
To reset the control box, press the reset push-but-
ton.
WARNING
In the event the burner stops, in order to prevent
any damage to the installation, do not unblock the
burner more than twice in a row. If the burner locks
out for a third time, contact the customer service.
DANGER
In the event there are further lockouts or faults
with the burner, the maintenance interventions
must only be carried out by qualified, authorised
personnel, in accordance with the contents of this
manual and in compliance with the standards and
regulations of current laws.
