Ferroli ATLAS D ECO SI UNIT Serie Instructions D'utilisation, D'installation Et D'entretien page 43

ATLAS D ECO SI UNIT
4.4 Troubleshooting
Diagnostics
The boiler has an advanced self-diagnosis system. In case of a boiler fault, the display
will flash together with the fault symbol (detail 22 - fig. 1) indicating the fault code.
There are faults that cause permanent shutdowns (marked with the letter "A"): to restore
operation, press the RESET button (detail 8 - fig. 1) for 1 second or use the RESET on
the remote timer control (optional) if installed; if the boiler does not restart, it is necessary
to eliminate the fault indicated in the operation LEDs.
Other faults cause temporary shutdowns (marked with the letter "F") which are automat-
ically reset as soon as the value returns within the boiler's normal working range.
ATTENTION
From software version 23, an additional feature has been introduced to facilitate burner
calibration, i.e. flame flashing on the display to indicate that the burner is on but with in-
dication of non-optimal flame.
For the various software versions, the meanings of the symbols shown on the display
can be found in the table 3.
Table. 3- Flame symbol indications
Indication on the display and meaning
Software
Flame Off Flame On Steady
Version
Burner off Burner on
22
Burner off Burner on and indication of stable flame
23
Table. 4- List of faults
Fault
Fault Possible cause
code
Pump blocked
Faulty electric motor
Faulty oil valve
No fuel in tank, or water on bottom
Oil line feed valves closed
Dirty filters (line-pump-nozzle)
Pump unprimed
Ignition electrodes not properly adjusted,
or dirty
Nozzle clogged, dirty or deformed
A01 Burner block Unsuitable head and shutter adjustments Adjust
Faulty electrodes or earthed
Faulty ignition transformer
Faulty electrode wires or earthed
Electrode wires deformed by high tem-
perature
Faulty valve or transformer electrical con-
nections
Broken pump-motor joint
Pump inlet connected to return pipe
Faulty photoresistance
Dirty photoresistance
Photoresistance short circuit
Flame present signal
A02
Extraneous light strikes the photoresist-
with burner off
ance
Heating sensor damaged
Overtemperature pro-
A03
tection activation No water circulation in the system
Air in the system
A04 Card parameter fault Wrong card parameter setting
Preheater fault (the
F07 contact does not close Wiring disconnected
in 120 seconds)
F09 Card parameter fault Wrong card parameter setting
Sensor damaged
F10 Delivery sensor 1 fault Wiring shorted
Wiring disconnected
F11 Card parameter fault Wrong card parameter setting
F12 Card parameter fault Wrong card parameter setting
Fault
code
F14
F16
F34
F35
F37
F39
F40
Flame Flashing
A41
-
F42
Burner on with indication of NOT
F47
optimal flame
Cure
Replace
Replace
Replace
Refill with fuel or suck the water
Open
Clean
Prime and find the cause of
unpriming
Adjust or clean them
Replace
Replace
Replace
Replace
Replace and protect
Check
Replace
Correct the connection
Replace
Clean the photoresistance
Replace the photoresistance
Eliminate the light source
Check the correct positioning and
operation of the heating sensor
Check the circulating pump.
(See table 5)
Vent the system
Check the card parameter and
modify it if necessary
Check the wiring
Check the card parameter and
modify it if necessary
Check the wiring or replace the
sensor
Check the card parameter and
modify it if necessary
Check the card parameter and
modify it if necessary
cod. 3541Q544 - Rev. 02 - 05/2024
Fault Possible cause
Sensor damaged
Delivery sensor 2 fault Wiring shorted
Wiring disconnected
Card parameter fault Wrong card parameter setting
Supply voltage under
Electric mains trouble
170V.
Faulty mains fre-
Electric mains trouble
quency
Pressure too low
Incorrect system water
pressure
Sensor damaged
Probe damaged or wiring shorted
External probe fault
Probe disconnected after activating the
sliding temperature
Incorrect system water
Pressure too high
pressure
Sensor positioning Delivery sensor not inserted in boiler shell
Heating sensor fault Sensor damaged
System water pressure
Wiring disconnected
sensor fault
Cure
Check the wiring or replace the
sensor
Check the card parameter and
modify it if necessary
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Check the wiring or replace the
sensor
Reconnect the external sensor or
disable the sliding temperature
Check the system
Check the safety valve
Check the expansion vessel
Check the correct positioning and
operation of the heating sensor
Replace the sensor
Check the wiring
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