AXE 3 D
15
EN
cod. 3540Z230 - 01/2011 (Rev. 00)
4.3 Maintenance
Periodical check
To ensure correct operation of the unit over time, have qualified personnel carry out a
yearly check, providing for the following:
•
The control and safety devices must function correctly.
•
The fume exhaust circuit must be perfectly efficient.
•
Check there are no obstructions or dents in the fuel supply and return pipes.
•
Clean the filter of the fuel suction line.
•
Measure the correct fuel consumption
•
Clean the combustion head in the fuel outlet zone, on the swirl disc.
•
Leave the burner running at full rate for approximately ten minutes, then analyse
the combustion, checking:
-
All the elements specified in this manual are set correctly
-
Temperatures of the fumes at the flue
-
CO2 percentage content
•
The air-fume end piece and ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For possible clean-
ing do not use chemical products or wire brushes.
•
The gas and water systems must be airtight.
•
The water pressure in the cold water system must be approx. 1 bar; otherwise, bring
it to that value.
•
The circulating pump must not be blocked.
•
The expansion tank must be filled.
•
Check the magnesium anode and replace it if necessary.
A
The boiler casing, control panel and aesthetic parts can be cleaned with a soft
and damp cloth, if necessary soaked in soapy water. Do not use any abrasive
detergents and solvents.
Boiler cleaning
1.
Disconnect the power supply to the boiler.
2.
Remove the front top and bottom panel.
3.
Open the door by undoing the knobs.
4.
Clean the inside of the boiler and the entire path of exhaust fumes, using a tube
brush or compressed air.
5.
Then close the door, securing it with the knob.
To clean the burner, refer to the Manufacturer's instructions.
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 eliminate
the fault indicated by the operation LEDs.
Other faults (marked with the letter “
F
”) cause temporary shutdowns that are automati-
cally 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. 19 - Dimensions, connections and main components
10
System delivery 1" 1/2"
11
System return 1" 1/2"
246
Heating system pressure transducer
275
Heating system drain cock
278
Double sensor ( heating)
Fault
code
Fault
Possible cause
Cure
A01
Burner shutdown
(RESET ONLY OCCURS
ON THE BURNER)
Refer to the burner manual
A03
Overtemperature protec-
tion 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
F07
Wiring fault
Connector X5 not connected Check the wiring
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
F13
Wiring fault
Connector X12 not con-
nected
Check the wiring
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
Mains frequency fault
Electric mains trouble
Check the electrical system
F37
Incorrect system water
pressure
Pressure too low
Fill the system
Sensor damaged
Check the sensor
F39
External probe fault
Probe damaged or wiring
shorted
Check the wiring or replace the sensor
Probe disconnected after
activating the sliding temper-
ature
Reconnect the external probe or disable the
sliding temperature
F40
Incorrect system water
pressure
Pressure too high
Check the system
Check the safety valve
Check the expansion tank
A41
Sensor positioning
Delivery sensor not inserted
in boiler shell
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
A
Ø a4
Ø a5
Ø a6
AXE 3 D 32
400
120-130
105
150
AXE 3 D 45
500
120-130
105
150
AXE 3 D 59
600
120-130
105
150
AXE 3 D 74
700
120-130
105
150
AXE 3 D 90
830
120-130
125
170
Fault
code
Fault
Possible cause
Cure
268
500
850
A
553
65
71
1
a4
10
11
275
a5
a6
246
278
