Troubleshooting - Ferroli ECONCEPT 35 C Instructions For Use, Installation And Maintenance

3.4 Troubleshooting

Fault Diagnosis
In the event of operating problems or trouble, the display blinks and a fault identification code appears.
Faults marked with the letter "F" cause temporary shutdowns that are automatically reset as soon as the value comes
back within the boiler's normal working range.
If together with the fault the display also shows RESET, the user must reset boiler operation by pressing RESET (5 -
fig. 1). The ignition cycle will thus be repeated.
Table. 4 - Fault list
Fault
Fault
code
F1 No burner ignition
Flame present with burner
F2
off
F3 Safety thermostat trips
F5 Fan trouble
Fault on the flame detection
F8
circuit
No communication between
F9 the control unit and the gas
valve
F10 -- F22 Microprocessor fault
F25 Software fault
No flame after the ignition
F26
phase (5 times in 4 min.)
F30 Delivery sensor fault
F31 Delivery sensor fault
F32 Tap water sensor fault
F33 Tap water sensor fault
Supply voltage under 190V.
F34
or over 250V
F35 Irregular mains frequency
20
Possible cause
No gas
Ignition/detection electrode fault
Defective gas valve
Low gas supply pressure
Air trap obstructed
Detection electrode fault
Card trouble
Delivery sensor not active
No system circulation
Tachometer signal interrupted
Fan damaged
Card trouble
Mains interference
Control unit not connected
Damaged valve
Microprocessor operating trou-
ble
Software operating fault
Ionization electrode fault
Unstable flame
Gas valve offset fault
Obstructed air/fume ducts
Air trap obstructed
Sensor damaged or short
circuited
Sensor damaged or wiring bro-
ken
Sensor damaged or wiring
shorted
Sensor damaged or wiring bro-
ken
Electric mains trouble
Electric mains trouble
cod. 3540F320 - 02/2007 (Rev. 00)
ECONCEPT 35 C
Solution
Check the regular gas flow to the boiler and the air
has been eliminated from the pipes
Check the wiring of the electrode and that it is cor-
rectly positioned and free of any deposits
Check and change the gas valve
Check the mains gas pressure
Check and if necessary replace the air trap
Check the detection electrode wiring
Check the card
Check the correct positioning and operation of the
delivery sensor
Check the circulator, by-pass and valves in the sys-
tem
Check the wiring
Check the fan
Check and if necessary change the card
Check the grounding
Connect the control unit to the gas valve
Change the valve
Cut off and restore the electricity supply. If the trou-
ble remains, check and/or change the main card
Cut off and restore the electricity supply. If the trou-
ble remains, check and/or change the main card
Check the position of the ionization electrode and
replace it if necessary
Check the burner
Check the Offset setting at the minimum power
Remove the obstruction from the flue, fume extrac-
tion ducts and air inlet and terminals
Check and if necessary clean the air trap
Check the wiring or change the sensor
Check the wiring or change the sensor
Check the wiring or change the sensor
Check the wiring or change the sensor
Check the electrical system
Check the electrical system
GB