Troubleshooting - Ferroli MODENA S HE Instructions For Use, Installation And Maintenance

3.5 Troubleshooting

Diagnostics
The boiler is equipped with 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.
Certain faults cause permanent boiler shutdowns (marked with the letter "A"): to restore operation, press the RESET
button (detail 6 - fig. 1) for 1 second or RESET on the optional remote timer control if installed; if the boiler fails to start,
it is necessary to firstly eliminate the fault.
other faults (indicated with the letter "F") cause temporary shutdowns that are automatically reset as soon as the value
returns within the boiler's normal working range.
Table. 6 - List of faults
Fault
Fault Possible cause
code
No gas
Electrode fault
A01 No burner ignition
Defective gas valve
Incorrect inlet gas pressure
Siphon obstructed
Electrode defective
Flame detected with
A02
the burner off
Main board defective
Flow temperature sensor not active or correctly
located
A03 High limit protection
No system circulation
A04 Flue gas fault Fault F07 happened 3 times in the last 24 hours
A05 Fan problem Tachometer signal interrupted for 1 hour or longer Check the wiring and the fan
Electrode fault
Flame unstable
No flame after the
A06 ignition phase (6 Incorrect valve gas Offset
times in 4 minutes)
Flue gas circuit obstructed
Siphon obstructed
Flow sensor
A41 Sensor disconnected
disconnected
A42 Flow sensor fault Sensor damaged
High fume The exchanger probe detects and excessive
F07
temperature temperature
Sensor damaged or short circuited
F10 Flow sensor fault
Sensor damaged or wiring broken
Sensor damaged or wiring shorted
F11 Return sensor fault
Sensor damaged or wiring broken
Sensor damaged or wiring shorted
Exchanger probe
F13
fault
Sensor damaged or wiring broken
Sensor damaged or short circuited
F14 Flow sensor fault
Sensor damaged or wiring broken
Tachometer signal interrupted, fan connection
F15 Fan problem
Fan damaged, debris in fan
Supply voltage under
F34 Electric supply problem
170V
Irregular mains
F35 Electric supply problem
frequency
Pressure too low
Incorrect system
F37
water pressure
Sensor damaged
F42 Flow sensor fault Sensor damaged
No system H
Exchanger
F43
protection activation.
Air in the system
Controller ABM03
A61 Controller ABM03 internal error
fault
No communication Controller not connected
A62 between controller
Valve damaged
and gas valve
A63
Controller ABM03
A64 Controller ABM03 internal error
fault
F66
26
O circulation
2
cod. 3541C360 - 04/2012 (Rev. 00)
MODENA S HE
Cure
Check the regular gas flow to the boiler and that the air has been purged
from the pipes
Check that the electrode is correctly positioned and free of any deposits
Check and change the gas valve
Check inlet gas pressure
Check and if necessary change the siphon
Check the electrode wiring
Check the PCB
Check the correct positioning and operation of the flow sensor
Check pump and radiator valves present in the system
Check operation of the internal by-pass
Check the exchanger
Check that the electrode is correctly positioned and if necessary change it
Check the burner
Check the Offset at the minimum power
Check if flue gas circuit is free
Check and if necessary change the siphon
Check the correct positioning and operation of the flow sensor
Change the sensor
Check the exchanger
Check the wiring or change the sensor
Check the wiring or change the sensor
Check the wiring or replace the probe
Check the wiring or change the sensor
Check the wiring and the fan
Check the fan, clean debris
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Change the sensor
Check the circulating pump
Vent the system
Check the earth connection and replace the controller if necessary.
Connect the controller to the gas valve
Replace the valve
Check the earth connection and replace the controller if necessary.
EN