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.
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 |
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 |
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 |
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 |
