Ferroli DIVATECH D F24 [10/48] Diagnostics

Ferroli DIVATECH D F24 [10/48] Diagnostics
DIVAtech D F
10
EN
cod. 3541P560 - Rev. 00 - 06/2018
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. 9
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 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
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 protection
activation
Heating sensor damaged
Check the correct positioning and
operation of the heating sensor
No water circulation in the sys-
tem
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 sensorWiring shorted
Wiring disconnected
F11
DHW sensor fault
Sensor damaged
Check the wiring or replace the sensorWiring shorted
Wiring disconnected
F14
Delivery sensor 2 fault
Sensor damaged
Check the wiring or replace the sensorWiring 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 pres-
sure
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 sensor
Probe disconnected after activat-
ing the sliding temperature
Reconnect the external sensor or disa-
ble 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
Code
fault
Fault Possible cause Cure

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