Troubleshooting Diagnostics - Ferroli DOMINA F32 N Instructions For Use, Installation And Maintenance

4.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler anomaly, the 3 LEDS will indicate the fault code.
There are faults that cause shutdown: in order to restore operation it suffices to press RESET for 1 second (ref. 5 - fig. 1) or perform a RESET on the optional remote timer control if
this is installed. If the boiler fails to start, you must first resolve the fault indicated on the display.
Other faults cause temporary shutdowns which are automatically reset as soon as the value returns within the boiler's normal working range.
Table. 8 - Fault list (Key LEDs
Indications on boiler panel
Green Yellow Red
20
EN
= Off / = On / = Fast flashing)
Indications on Remote Control Fault
A01 No burner ignition
A06 No flame after the ignition phase
A02 Flame present signal with burner off
Air pressure switch (fails to close con-
F05
tacts within 20 sec. of fan activation)
Air pressure switch (contacts closed on
F07
activation of fan)
F04 Card parameter fault
F37 Low system pressure
F10 Delivery sensor fault
F11 DHW sensor fault
Exchanger protection intervention (the
F43
LEDs flash alternately)
Display off Faulty card
A09 Gas valve fault
A16 Gas valve fault
F34 Supply voltage under 140VAC
F35 Faulty mains frequency
F50 Controller DBM33 fault
F51 Controller DBM33 fault
Display off Card not electrically powered
Overtemperature protection interven-
A03
tion
A23 Card parameter fault
A24 Card parameter fault
cod. 3541E094 - Rev. 00 - 06/2014
DOMINA F24 N / F28 N / F32 N
Possible cause
No gas
Ignition/detection electrode fault
Faulty gas valve
Ignition power too low
Low pressure in the gas system
Burner minimum pressure setting
Electrode fault
Card fault
Air pressure switch contact open
Faulty air pressure switch wiring
Wrong baffle
Flue not correctly sized or obstructed
Air pressure switch contact open
Faulty air pressure switch wiring
Wrong baffle
Flue obstructed or not correctly sized
Wrong card parameter setting
System empty
Water pressure switch damaged or not connected
Sensor damaged
Wiring shorted
Wiring disconnected
Sensor damaged
Wiring shorted
Wiring disconnected
No system H O circulation
2
Air in the system
Card failure
Wiring disconnected
Faulty gas valve
Wiring disconnected
Faulty gas valve
Electric mains trouble
Electric mains trouble
Controller DBM33 internal error
Controller DBM33 internal error
No power
Blown fuses
Heating sensor damaged
No water circulation in the system
Air in the system
Wrong card parameter setting
Wrong card parameter setting
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 gas pressure
Check the gas pressures
Check the ionisation electrode wiring
Check the card
Check the wiring
Check the fan
Check the pressure switch
Replace the baffle
Check the pressure switch / Fan / Fan socket
Check the wiring
Make sure the baffle is correct
Check the length of the flues / Clean the flues
Check the card parameter and modify it if necessary
Fill the system
Check the sensor
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the circulating pump
Vent the system
Replace the card
Check the wiring
Check the gas valve and replace it if necessary
Check the wiring
Check the gas valve and replace it if necessary
Check the electrical system
Check the electrical system
Check the earth connection and replace the controller if
necessary.
Check the earth connection and replace the controller if
necessary.
Check the power supply
Replace fuses
Check the correct positioning and operation of the heating
sensor
Check the circulating pump
Vent the system
Check the card parameter and modify it if necessary
Check the card parameter and modify it if necessary