21
20127402
GB
Electrical wiring
7.5.10 Reset push-button anomaly
If the reset button is faulty or is kept pressed for more than 60
seconds, the fault is indicated by the blinking of the LED (see par-
agraph
“Fault diagnostics - lockouts”
on page 19) as long as
it is present.
This fault is merely a visualisation.
If the fault is detected during pre-purging or safety time, the
burner does not stop (the start-up sequence will continue).
If the fault is detected during operation, the burner does
stops and stays stopped with the fault signal active.
If the fault is detected during a lockout, the fault is not sig-
nalled and the burner cannot be reset.
When the fault disappears, the LED stops blinking.
7.5.11 External lockout indicator
The burner is equipped with an external locking signal function,
i.e. to signal (together with the integrated reset button) a burner
locking alarm.
The control box enables the command of an external lamp using
the output
(230Vac-0.5Amp max).
7.5.12 Frequency supply error
The control-box automatically detects the value of the frequency
of the main supply in the range of 50 - 60 Hz, in both cases work-
ing times are verified. The fault is indicated by way of the blinking
LED (see paragraph
“Fault diagnostics - lockouts”
page 19).
If the anomaly is detected before heat demand the burner
does not start.
If the fault is detected during the pre-purging, the burner
remains in purge condition and the fault is appropriately sig-
nalled.
The fault is not detected during normal running, the burner
remains in this state.
When the fault disappears, the burner restarts.
7.5.13 Internal voltage anomaly
The control-box automatically detects if the internal voltage
works correctly. The fault is indicated by way of the blinking LED
(see paragraph
“Fault diagnostics - lockouts”
If the anomaly is detected during the initialisation check time,
the burner does not start.
If the anomaly is detected after a lockout the burner does not
start.
If the anomaly is detected after a shut-down test, the burner
does not start.
The fault is not detected during normal running, the burner
remains in this state.
When the fault disappears, the burner restarts.
7.5.14 Checking the fan motor
The control box automatically detects the presence of the fan mo-
tor and, in the event of a fault, it performs a lockout. The lockout
is indicated by the blinking of the LED (see paragraph
7.5.15 Checking the electronic circuit controlling the
oil valve
The control box detects the presence of a fault inside the elec-
tronic circuit controlling the oil valve, the fault is indicated by the
blinking LED (see paragraph
“Fault diagnostics - lockouts”
page 19):
if the anomaly is detected during the initialisation, the burner
goes into lockout.
if the anomaly is detected during the pre-purging, the burner
goes into lockout.
During a recycling, if the fault is detected, the burner does
not start and goes into lockout.
If the fault is not detected during running position the burner
remains in operation.
The fault is not detected if the burner is in lockout.
7.5.16 EEprom check
The control box automatically detects if EEprom memory of mi-
cro-controller has failed and will perform a lockout. The lockout is
indicated by the blinking of the LED (see paragraph
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