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Fume recuperator cleaning
To clean the recuperator:
•
Lift the boiler top panel A and remove back panel B.
•
Remover fume recuperator closing cover C.
•
Using a suitable tube-brush and a vacuum cleaner, thoroughly clean the inside of
the recuperator.
•
If very dirty, a suitable device for spraying water inside can be used. In this case,
make sure large amounts of water do not come into contact wit the cast iron ele-
ments in the smoke chamber. Run the water through condensate drain D after dis-
connecting the trap.
fig. 34 - Recuperator cleaning
4.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault,
the display will flash together with the fault symbol (detail 22 - fig. 118) indicating the fault
code.
There are faults that cause permanent shutdown (marked with the letter "A"): to restore
operation, press the RESET button (detail 8 - fig. 118) for 1 second or RESET on the op-
tional remote timer control if installed; if the boiler fails to restart, it is necessary to elim-
inate the fault indicated by the operation LEDs.
Faults marked with the letter "F" cause temporary shutdowns that are automatically reset
as soon as the value returns within the boiler's normal working range.
44
EN
Table. 4 - List of faults
Fault
Fault
code
A01
Burner block
Flame present signal
A02
with burner off
Overtemperature pro-
A03
tection activation
Preheater fault (the
F07
contact fails to close
within 120 seconds)
F10
Delivery sensor 1 fault
F11
DHW sensor fault
F14
Delivery sensor 2 fault
Supply voltage under
F34
170V.
Faulty mains fre-
F35
quency
Incorrect system water
F37
pressure
F39
External probe fault
Incorrect system water
F40
pressure
A41
Sensor positioning
F42
Heating sensor fault
System water pressure
F47
sensor fault
cod. 3540U263 - 06/2012 (Rev. 00)
ATLAS D 30 PLUS UNIT
Possible cause
Pump blocked
Faulty electric motor
Faulty oil valve
No fuel in tank, or water on bottom
Oil line supply valves closed
Dirty filters (line-pump-nozzle)
Pump unprimed
Ignition electrodes not properly adjusted,
or dirty
Nozzle clogged, dirty or deformed
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
Extraneous light strikes the photoresist-
ance
Heating sensor damaged
No water circulation in the system
Air in the system
Preheater fault
Wiring disconnected
Sensor damaged
Wiring shorted
Wiring disconnected
Sensor damaged
Wiring shorted
Wiring disconnected
Sensor damaged
Wiring shorted
Wiring disconnected
Electric mains trouble
Electric mains trouble
Pressure too low
Sensor damaged
Probe damaged or wiring shorted
Probe disconnected after activating the
sliding temperature
Pressure too high
Delivery sensor not inserted in boiler shell
Sensor damaged
Wiring disconnected
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 photoresistance
Eliminate the light source
Check the correct positioning and
operation of the heating sensor
Check the circulating pump
Vent the system
Check the preheater
Check the wiring
Check the wiring or replace the
sensor
Check the wiring or replace the
sensor
Check the wiring or replace the
sensor
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Check the wiring or replace the
sensor
Reconnect the external probe or
disable the sliding temperature
Check the system
Check the safety valve
Check the expansion tank
Check the correct positioning and
operation of the heating sensor
Replace the sensor
Check the wiring
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