Ferroli PEGASUS D 45 K 130 Instrucciones De Uso, Instalación Y Mantenimiento página 36

Burner assembly removal and cleaning
To remove the burner assembly:
• Disconnect the power and turn off the gas ahead of the boiler;
• Undo the nut "A" fixing the gas feed pipe ahead of the gas valve;
• Disconnect the electrical connections and the gas pipe of the pilot burner assembly "D".
• Undo the two nuts "B" fixing the combustion chamber door to the cast iron elements
of the boiler (fig. 22)
• Remove the burner assembly and combustion chamber door.
Then check and clean the main burners and pilot burner. Only use a non-metallic brush
or compressed air to clean the burners and electrodes; never use chemical products.
During cleaning operations be careful not to damage the insulation of the combustion
chamber door "C".
Only use a non-metallic brush or compressed air to clean the burners and elec-
A
trodes; never use chemical products.
C
fig. 22 - Removing the burners
Pilot burner assembly
fig. 23 - Pilot burner
1. Combustion chamber door
2. Inspection door
3. Pilot burner
4. Ignition electrode
5. Detection electrode
6. Pilot nozzle
7. High voltage cable
8. Gas feed pipe
36
EN
D
A
B
B
cod. 3540T664 - Rev. 01 - 02/2015
PEGASUS D 45 K 130
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. 1) 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. 1) for 1 second or RESET on the op-
tional remote timer control if installed; if the boiler fails to start, it is necessary to firstly
eliminate the fault.
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.
Table. 2 - Fault list
Fault
Fault Possible cause
code
No gas
Ignition/detection electrode
fault
A01 No burner ignition
Faulty gas valve
Ignition power too low
Electrode fault
Flame present signal with
A02
burner off
Card fault
Heating sensor damaged
Overtemperature
A03 No water circulation in the
protection activation
system
Air in the system
Fume thermostat contact
Fume thermostat
open
activated (after activation
F04 of the fume thermostat, Wiring disconnected
boiler operation is
Flue obstructed or not
prevented for 20 minutes)
correctly sized
Low pressure in the gas
system
No flame after the
A06
ignition stage
Burner minimum pressure
setting
Sensor damaged
F10 Delivery sensor 1 fault Wiring shorted
Wiring disconnected
Sensor damaged
F11 DHW sensor fault Wiring shorted
Wiring disconnected
Sensor damaged
F14 Delivery sensor 2 fault Wiring shorted
Wiring disconnected
Supply voltage under
F34 Electric mains trouble
170V.
F35 Faulty mains frequency Electric mains trouble
System empty
Incorrect system water
F37
Water pressure switch
pressure
damaged or not connected
Probe damaged or wiring
shorted
F39 External probe fault
Probe disconnected after
activating the sliding
temperature
Incorrect system water
F40 Pressure too high
pressure
Delivery sensor detached
A41 Sensor positioning
from the pipe
F42 Heating sensor fault Sensor damaged
System water pressure
F47 Wiring disconnected
sensor fault
Gas valve wiring fault
A48 Gas valve fault Faulty gas valve
Card fault
Gas valve wiring fault
A49 Gas valve fault Faulty gas valve
Card fault
Cure
Check the regular gas flow to the boiler and
that the air has been eliminated from the pipes
Check the wiring of the electrode and that it is
correctly positioned and free of any deposits
Check the gas valve and replace it if
necessary
Adjust the ignition power
Check the ionisation electrode wiring
Check the card
Check the correct positioning and operation of
the heating sensor
Check the circulating pump
Vent the system
Check the thermostat
Check the wiring
Replace the flue
Check the gas pressure
Check the pressures
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
Check the wiring
Replace the gas valve
Replace the card
Check the wiring
Replace the gas valve
Replace the card