Ferroli PEGASUS D 45 K 130, Instructions For Use, Installation And Maintenance, Page: 37 / 80

PEGASUS D K 130
37
EN
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
5. TECHNICAL DATA AND CHARACTERISTICS
5.1 Dimensions, connections and main components
fig. 25 - Dimensions and main components
7 Gas inlet - 1/2”
10 System delivery - ”
11 System return - ”
14 Heating safety valve
32 Heating circulating pump
36 Automatic air vent
40 DHW expansion tank (preventing water hammer)
44 Gas valve
56 Expansion tank
74 System filling cock
97 Magnesium anode
130 Hot water tank circulating pump
143 Hot water tank control thermostat
178 Hot water tank thermometer bulb
179 Non-return valve
180 Hot water tank
192 Recirculation
197 Manual air vent
209 Hot water tank delivery
210 Hot water tank return
233 Hot water tank drain cock
246 Pressure transducer
255 Boiler water circuit drain
273 Pilot burner assembly
275 Heating system drain cock
293 Hot water tank inspection flange
Fault
code
Fault Possible cause Cure
A01 No burner ignition
No gas
Check the regular gas flow to the boiler and
that the air has been eliminated from the
pipes
Ignition/detection electrode fault
Check the wiring of the electrode and that it
is correctly positioned and free of any
deposits
Faulty gas valve
Check the gas valve and replace
it if necessary
Ignition power too low Adjust the ignition power
A02
Flame present signal with
burner off
Electrode fault Check the ionisation electrode wiring
Card fault Check the card
A03
Overtemperature protection
activation
Heating sensor damaged
Check the correct positioning
and operation of the heating sensor
No water circulation
in the system
Check the circulating pump
Air in the system Vent the system
F04
Fume thermostat activated
(after activation of the fume
thermostat, boiler operation
is prevented for 20 minutes)
Fume thermostat contact open Check the thermostat
Wiring disconnected Check the wiring
Flue obstructed or not
correctly sized
Replace the flue
A06
No flame after the ignition
stage
Low pressure in the gas
system
Check the gas pressure
Burner minimum pressure
setting Check the pressures
F10 Delivery sensor 1 fault
Sensor damaged
Check the wiring or replace the sensor Wiring shorted
Wiring disconnected
F11 DHW sensor fault
Sensor damaged
Check the wiring or replace the sensor Wiring shorted
Wiring disconnected
F14 Delivery sensor 2 fault
Sensor damaged
Check the wiring or replace the sensor Wiring shorted
Wiring disconnected
F34 Supply voltage under 170V. Electric mains trouble Check the electrical system
F35 Faulty mains frequency Electric mains trouble Check the electrical system
F37
Incorrect system water
pressure
System empty Fill the system
Water pressure switch damaged
or not connected
Check the sensor
F39 External probe fault
Probe damaged or wiring
shorted
Check the wiring or replace the sensor
Probe disconnected after activat-
ing the sliding temperature Reconnect the external probe or disable
the sliding temperature
F40
Incorrect system water pres-
sure
Pressure too high
Check the system
Check the safety valve
Check the expansion tank
A41 Sensor positioning
Delivery sensor detached from
the pipe Check the correct positioning
and operation of the heating sensor
F42 Heating sensor fault Sensor damaged Replace the sensor
F47
System water pressure
sensor fault
Wiring disconnected Check the wiring
A48 Gas valve fault
Gas valve wiring fault Check the wiring
Faulty gas valve Replace the gas valve
Card fault Replace the card
A49 Gas valve fault
Gas valve wiring fault Check the wiring
Faulty gas valve Replace the gas valve
Card fault Replace the card
Model A (Øi)
PEGASUS D 30 K 130 131
PEGASUS D 40 K 130 151
A
40
44
255
273
74
180
197
246
32
130
293
143
178
97
275
1345
179
233
500 A
40 52
1174
1065
11
7
10
56
209
950
82
170
170
192
210
167
11
10
56
209
192
197
36
278
14
74
210
cod. 3540T644 - Rev. 0 - /201