Ferroli Boiler Error Codes

Ferroli Boiler Error Codes

Ferroli Boiler Error Codes

The Ferroli range of powerful, boilers are normally extremely reliable. But things can still go wrong.

Occasionally some things can go wrong, that’s why we’ve created our handy at-a-glance table of Ferroli error codes below and our guide to Common Ferroli Boiler Problems.

Should you need professional help with your broken boiler, then simply use one of our enquiry forms and we will connect you with the best heating engineers local to you.


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Ferroli iBoiler error codes

Listed below are some error codes that could appear on your iBoiler 25kW or 29 kW boiler.

Fault Code System Behaviour
A01 Ignition error. Possible electrode fault or power too low. No gas or excessive condensate level
A02 Electrode or card error
A03 Heating sensor damaged, no water circulation or air in system
F04 Wrong card parameter setting
F05 Air pressure switch contact error / wrong baffle flue obstructed or not correctly sized
A06 No flame after the ignition phase – low pressure in gas system burner minimum pressure setting
F07 Air pressure switch error – contacts closed on activation of fan
A09

Gas valve error – wiring could be disconnected or error with gas valve
F10 Delivery sensor error, sensor damaged wiring shorted or disconnected
F11 DHW sensor error – sensor damaged, wiring shorted or disconnected
A15 Fault F05 generated 5 times within the last 24 hours – possible error with the air pressure switch
A16 Gas valve error – wiring disconnected or faulty gas valve
A23 Card parameter error – possibly wrong card parameter setting
A24 Card parameter error – possibly wrong card parameter setting
F34 Supply voltage under 170 V – electric mains error
F35 Faulty mains frequency – electric mains error
F37 Error with system water pressure, possible pressure too low or water pressure switch is damaged
F43 Exchanger protection intervention – could be because no system H20 circulation or there’s air in the system
F50 Controller DBM23B error – controller could have an internal error
F51 Controller DBM23B error – controller could have an internal error
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Ferroli Modena HE System error codes

Listed below are some error codes that could appear on your Modena HE Boiler.

Fault Code System Behaviour
A01 No burner ignition – possible electrode error, defective gas valve or incorrect inlet gas pressure
A02 Flame detected with the burner off – electrode defective main board defective
A03 High limit protection – possible flow temperature sensor not active or incorrectly located, no system circulation
A04 Flue gas fault – fault F07 happened 3 times in the last 24 hours
A05 Fan error – tachometer signal interrupted for 1 hour or longer
A06 No flame after the ignition phase – electrode error, flame unstable, incorrect valve gas offset or flue gas circuit obstructed
A41 Flow sensor error – sensor disconnected
A42 Flow sensor error – sensor damaged
F07 High fume temperature – the exchanger probe detects an excessive temperature
F10 Flow sensor error – sensor damaged, short circuited, sensor damaged or wiring broken
F11 Return sensor error – t-sensor damaged, short circuited, sensor damaged or wiring broken
F13 Exchanger probe error – t-sensor damaged, short circuited, sensor damaged or wiring broken
F14 Flow sensor error – t-sensor damaged, short circuited, sensor damaged or wiring broken
F15 Fan problem – tachometer signal interrupted fan connection or damaged debris in fan. You need to check and clean fan debris
F34 Supply voltage under 170v – electric supply error
F35 Irregular mains frequency – electric supply problem
F37

Incorrect system water pressure error – possible sensor damaged or pressure too low
F43 Exchanger protection activation – no system circulation air in system
F52 Flow sensor – fault sensor damaged
A61 Controller ABM03B error – controller has an internal error
A62 No communication between controller and gas valve – controller not connected or valve damaged
A63 / A64 / F66 Controller ABM03B error – controller internal error
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Ferroli Modena HE Combi error codes

Listed below are some error codes that could appear on your Modena HE Boiler.

Fault Code System Behaviour
A01 No Burner Ignition – possibly no gas / detection or ignition electrode / fault defective gas valve / incorrect inlet gas pressure
A02 Flame detected with the burner off. Possibly caused by ionisation, defective electrode or main board defective. Check the PCB or ionizing electrode wiring
A03 High limit protection – flow temperature sensor not active, incorrectly located or no system circulation. Check the position of the flow sensor or check pump and radiator valves
A04

Flue gas fault. This could be because F07 happened 3 times in the last 24 hours – check the flue
A05 Fan problem. Tachometer signal interrupted for 1 hour or longer – check the wiring and the fan
A06 No flame after ignition phase. Possible causes: detection electrode fault / flame unstable / incorrect valve gas offset / flue gas circuit
A41 Flow sensor disconnected. Check the correct positioning and operation of the flow sensors
A42 Flow sensor fault. Sensor needs changing
F07 High fume temperature. The exchanger probe detects an excessive temperature for over 2 minutes. Check the exchanger.
F10 Flow sensor fault. Possible causes: sensor damaged, short circuited or wiring broken check the wiring
F11 Return sensor fault. Sensor wiring shorted or broken – check the wiring
F12 DHW sensor fault. Sensor damaged, wiring shorted or wiring disconnected – check the wiring
F13 Exchange probe fault. Wiring shorted or wiring broken – check wiring
F14 Fan problem – tachometer signal interrupted fan connection. Fan damaged or debris in fan – check the wiring, the fan and clean debris
F15 Supply voltage under 170v. Electric supply problem – the electrical system needs checking
F34

Irregular mains frequency. Possible electric supply problem – the electrical system needs checking
F35 Incorrect system water pressure. Possible cause is pressure too low or sensor damaged – the system may need filling, check the sensor
F37 External probe fault sensor damaged or short circuited – check the wiring
F39 Exchanger protection activation. Possibly caused by no system circulation, air in the system or sensor damaged
F43 Flow sensor fault. Sensor damaged – sensor need changing
F52 Controller 041049G0 fault – controller internal error
A61 No communication between controller and gas valve controller – could not be connected or valve damaged
A62 Controller 041049G – internal error
A63 / A64 / F66 Controller DBM12 fault
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Ferroli Discontinued Boiler error codes

Listed below are some error codes that could appear on your Ferroli Boiler.

  • DOMIcondens HE 26 C
  • OPTIMAX HE PLUS 31C boiler
  • OPTIMAX HE PLUS 38C boiler.
Boilers Fault Code System Behaviour
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C A01 No burner ignition
OPTIMAX HE PLUS 38C A01 The burner fails to light
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A02 Flame present signal with burner off, possible electrical fault
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A03 Over temperature protection activation
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C A04 Fume thermostat fault
OPTIMAX HE PLUS 38C A04 Fume extraction duct safety device activation
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C A05 Fan fault or fume pressure switch fault
OPTIMAX HE PLUS 38C A05 Fan protection activated
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A06 No flame after the ignition phase
OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C F07 High fume temperature
DOMIcondens HE 26 C F07 Card parameter
DOMIcondens HE 26 C A09 Gas value fault
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C F10 Delivery sensor 1 fault
DOMIcondens HE 26 C F11 DHW sensor fault
OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C F11 Return sensor fault
OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C F13 Fume sensor fault
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C F14 Delivery sensor 2 fault
OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C F15 Fan fault
DOMIcondens HE 26 C A16 Gas valve fault
DOMIcondens HE 26 C F20 Combustion control fault
DOMIcondens HE 26 C A21 Poor combustion fail
DOMIcondens HE 26 C A23 Set nominal system water pressure not reached within 4 minutes
DOMIcondens HE 26 C A24 4 fillings within 24 hours
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A34 Supply voltage under 170V / 180V
DOMIcondens HE 26 C A35 Faulty mains frequency
OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A35 Mains frequency anomaly
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A37 Incorrect system water pressure
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A39 External probe fault/td>
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A41 Sensor positioning
DOMIcondens HE 26 C / OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C F42 Heating sensor fault
DOMIcondens HE 26 C A43 Exchange protection activation
DOMIcondens HE 26 C A50 Gas valve fault
DOMIcondens HE 26 C A51 Poor combustion fault
OPTIMAX HE PLUS 31C boiler / OPTIMAX HE PLUS 38C A62 No communication between electronic controller and gas valve
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