Ferroli PEGASUS D 30 K 100 LN Instrucciones De Uso página 38

4.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler anom-
aly, 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.
Other faults (marked with the letter "F") that cause temporary shutdowns are automati-
cally 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
A01 Burner fails to light
fault
Faulty gas valve
Ignition power too low
Electrode fault
Flame present signal
A02
with burner off
Card fault
Heating sensor damaged
Overtemperature protec-
A03 No water circulation in sys-
tion activation
tem
Air in the system
Fume thermostat contact
Fume thermostat activa-
open
tion (after the fume ther-
F04 mostat activation, boiler Wiring disconnected
operation is prevented
Flue not correctly sized or
for 20 minutes)
obstructed
Low pressure in gas system Check the gas pressure
No flame after the igni-
A06
Burner minimum pressure
tion stage
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 Mains frequency fault Electric mains trouble
System empty
Incorrect system water
F37
Water pressure switch not
pressure
connected or damaged
Probe damaged or wiring
shorted
F39 External probe fault
Sensor disconnected after
activating sliding tempera-
ture
Incorrect system water
F40 Pressure too high
pressure
Delivery sensor discon-
A41 Sensor positioning
nected from 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
38 EN
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 neces-
sary
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 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
cod. 3540T301 - 02/2010 (Rev. 00)
PEGASUS D 30 K 100 LN
5. TECHNICAL DATA AND CHARACTERISTICS
5.1 Dimensions, connections and main components
500
36
197
40
246
32
130
44
255 179
273
74
143
178
293
97
180
275
233
øi 150
7
52
40
10
11
126
A
14
56
209
192
210
7 Gas inlet - 1/2"
10 System delivery - 3/4"
11 System return - 3/4"
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 Hot water tank plumbing circuit drain
273 Pilot burner assembly
275 Heating system drain cock
293 Hot water tank inspection flange
750
140
179
11
10
209
192
210
fig. 25
197
36