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FL D HF
10
EN
cod. 3541P701 - Rev. 00 - 10/2018
4.4 Troubleshooting
Diagnostics
The boiler has an advanced self-diagnosis system. In case of a boiler fault, the display
will flash together with the fault symbol (detail 11 - fig. 1) indicating the fault code.
There are faults that cause permanent shutdowns (marked with the letter "A"): to restore
operation, press the RESET button (detail 6 - fig. 1) for 1 second or RESET on the op-
tional remote timer control if installed. At this point the display will show “d4” for about
30 seconds or “d5” for about 5 minutes which indicates the waiting time after which the
boiler will resume normal operation. if the boiler fails to restart, it is necessary to eliminate
the fault.
Other faults cause temporary shutdowns (marked with the letter “F”) which are automat-
ically reset as soon as the value returns within the boiler's normal working range.
List of faults
Table. 8
5. TECHNICAL DATA AND CHARACTERISTICS
Table. 9- Legend, fig. 27, fig. 28 and fig. 29
Code
fault
Fault Possible cause Cure
A01
No burner ignition
No gas
Check the regular gas flow to the
boiler and that the air has been elimi-
nated 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
Gas valve wiring disconnected Check the wiring
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 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
F04
Card parameter fault Wrong card parameter setting
Check the card parameter and modify
it if necessary
F05
Card parameter fault Wrong card parameter setting
Check the card parameter and modify
it if necessary
Fan fault
Wiring disconnected Check the wiring
Defective fan Check the fan
Card fault Check the card
A06
No flame after the ignition
phase
Low pressure in the gas system Check the gas pressure
Burner minimum pressure setting Check the pressures
F07
Card parameter fault Wrong card parameter setting
Check the card parameter and modify
it if necessary
A09
Gas valve fault
Wiring disconnected Check the wiring
Faulty gas valve
Check the gas valve and replace it if
necessary
F10
Delivery sensor 1 fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
F11
DHW sensor fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
F14
Delivery sensor 2 fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
A16
Gas valve fault
Wiring disconnected Check the wiring
Faulty gas valve
Check the gas valve and replace it if
necessary
F20
Combustion control fault
Fan fault Check the fan and fan wiring
Faulty baffle
Check the baffle and replace it if nec-
essary
Flue not correctly sized or
obstructed
Check the flue
A21
Poor combustion fault
Fault F20 generated 6 times in the
last 10 minutes
See fault F20
A23
Card parameter fault Wrong card parameter setting
Check the card parameter and modify
it if necessary
A24
Card parameter fault Wrong card parameter setting
Check the card parameter and modify
it if necessary
F34
Supply voltage under 180V. Electric mains trouble Check the electrical system
F35
Faulty mains frequency Electric mains trouble Check the electrical system
F37
Incorrect system water
pressure
Pressure too low 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 sen-
sor
Probe disconnected after activat-
ing the sliding temperature
Reconnect the external sensor or dis-
able the sliding temperature
A41
Sensor positioning
Delivery sensor or DHW sensor
detached from the pipe
Check the correct positioning and
operation of the sensors
F42
Heating sensor fault Sensor damaged Replace the sensor
F43
Exchanger protection trips.
No H
2
O system circulation
Check the circulating pump
Air in the system Vent the system
F50
Gas valve fault
Modulating Operator wiring dis-
connected
Check the wiring
Faulty gas valve
Check the gas valve and replace it if
necessary
A51
Poor combustion fault Inlet/exhaust flue obstruction Check the flue
5
Sealed chamber
44
Gas valve
10
System delivery - Ø 3/4”
56
Expansion vessel
11
System return - Ø 3/4”
74
System filling faucet
14
Safety valve
81
Ignition and detection electrode
16
Fan
95
Diverter valve
19
Combustion chamber
114
Water pressure switch
22
Burner
187
Fume baffle
27
Copper exchanger for heating and DHW
209
Hot water tank delivery
28
Fume manifold
210
Hot water tank return
29
Fume outlet collar
241
Automatic bypass
32
Heating circulating pump
278
Double sensor (Safety + heating)
36
Automatic air vent
Code
fault
Fault Possible cause Cure
Содержание
- Instructions for use installation and maintenance 1
- Fl d hf 2
- Fl d hf 3
- Fl d hf 4
- Fl d hf 5
- Fl d hf 6
- Fl d hf 7
- Cod 3541p701 rev 00 10 2018 8
- Configuration menu 8
- Fl d hf 8
- Heating power adjustment 8
- If the test mode is activated and enough hot water is drawn to activate the dhw mode the boiler remains in test mode but the 3 way valve goes to dhw 8
- Parameters indicated by the letter p are available which are also modifiable from remote timer control 8
- Parameters with more than one description vary their function and or range in rela tion to the setting of the parameter given in brackets 2 parameters with more than one description are reset to the default value if the pa rameter given in brackets is modified 8
- Press the heating buttons to scroll the list of parameters in increasing or decreasing or der press the dhw buttons to view or modify the value of a parameter the change will be automatically saved 8
- Service menu 8
- The card service menu is accessed by pressing the reset button for 20 seconds 4 sub menus are available press the heating buttons to select in increasing or decreasing or der ts in hi or re ts means transparent parameters menu in means information menu hi means history menu after selecting the submenu press the re set button again to access it re means history menu reset see description 8
- The configuration menu is accessed by pressing the dhw buttons together for 10 sec onds 12 parameters indicated by the letter b and not modifiable from remote timer control are available 8
- The test mode is automatically deactivated in any case after 15 minutes or on stopping of hot water drawing if enough hot water has been drawn to activate the dhw mode 8
- To adjust the heating power switch the boiler to test mode see sec 4 press the heating buttons detail 3 fig 1 to increase or decrease the power min 00 max 100 press the reset button within 5 seconds and the max power will remain that just set exit test mode see sec 4 8
- To deactivate the test mode press the heating buttons details 3 and 4 fig 1 together for 5 seconds 8
- To exit the configuration menu press the dhw buttons together for 10 seconds or exiting occurs automatically after 2 minutes 8
- Ts transparent parameters menu 8
- Fl d hf 9
- Cod 3541p701 rev 00 10 2018 10
- Diagnostics 10
- Fl d hf 10
- List of faults 10
- Other faults cause temporary shutdowns marked with the letter f which are automat ically reset as soon as the value returns within the boiler s normal working range 10
- Table 8 10
- Table 9 legend fig 27 fig 28 and fig 29 10
- Technical data and characteristics 10
- The boiler has an advanced self diagnosis system in case of a boiler fault the display will flash together with the fault symbol detail 11 fig 1 indicating the fault code 10
- There are faults that cause permanent shutdowns marked with the letter a to restore operation press the reset button detail 6 fig 1 for 1 second or reset on the op tional remote timer control if installed at this point the display will show d4 for about 30 seconds or d5 for about 5 minutes which indicates the waiting time after which the boiler will resume normal operation if the boiler fails to restart it is necessary to eliminate the fault 10
- Troubleshooting 10
- Fl d hf 11
- Fl d hf 12
- Fl d hf 13
- Fl d hf 14
- Fl d hf 15
- Fl d hf 16
- Fl d hf 17
- Fl d hf 18
- Fl d hf 19
- Fl d hf 20
- En 1856 1 21
- Fl d hf 21
- Fl d hf24 fl d hf32 21
- Fl d hf 22
- Cod 3541p701 rev 00 10 2018 23
- Fl d hf 23
- Fl d hf 24
- 9 27 28 29 25
- A 6 1 1 d4 30 d5 5 25
- Cod 3541p701 rev 00 10 2018 25
- Fl d hf 25
- Fl d hf 26
- Fl d hf 27
- Fl d hf 28
- Fl d hf 29
- Fl d hf 30
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