External Lockout Indicator; Frequency Main Supply Anomaly; Internal Voltage Anomaly; Checking The Fan Motor - Riello 484LD2X Installation, Use And Maintenance Instructions

ent.
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.

8.8.12 External lockout indicator

The burner is equipped with an external locking signal function,
i.e. to signal (together with the integrated reset push-button) a
burner locking alarm.
The control box enables the command of an external lamp by
way of the exit (230Vac-0.5Amp max).

8.8.13 Frequency main supply anomaly

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 section 8.8.2).
 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.
 If the anomaly is detected during running position the burner
remains in operation.
When the anomaly disappears, the burner restarts.

8.8.14 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 section 8.8.2).
8.9

Automatic pre-heating deactivation (for burners equipped with heater)

It is possible to disable the pre-heater function in automatic
mode by pressing the reset push-button of the control box or the
remote reset.
Pre-heating deactivation
sequence
Allow the disabling of the pre-heating
only when there is no lockout or fault
Allow the disabling of the pre-heating
using the reset push-button or the re-
mote reset.
Supply the burner and simultaneous-
ly keep pressed the reset push-but-
ton or the remote reset for 3 seconds.
Release the reset push-button or the
remote reset within 3 seconds.
The burner will start disabling the pre-
heating only if the reset push-button
or the remote reset is released within
3 seconds.
2903266
Start-up, calibration and operation of the burner
Colour of the
button led
-
-
RED
OFF
-
Tab. E
 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 shutdown 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.

8.8.15 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 led (see section 8.8.2).
8.8.16 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 section 8.8.2"):
 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 anomaly is detected during running position the burner
remains in operation.
The fault is not detected if the burner is in lockout.

8.8.17 EEprom check

The control-box automatically detects if EEprom memory of mi-
crocontroller has failed and will perform a lockout. The lockout is
indicated by blinking led (see section 8.8.2).
When the pre-heating is disabled, the pre-heating remains off
until:
– a lockout occurs
– the main supply voltage is interrupted
– there is a stop due to intermittent operation.
The deactivation of the automatic pre-heating function is not lost
if the shut-down function is enabled.
24 GB