Welcome to the Maintracts Services blog, your trusted resource for all things Ferroli boilers! With a remarkable history dating back to 1974, Maintracts Services has been a leading provider of top-notch heating services.
Our team of expert heating engineers possesses extensive experience in dealing with Ferroli boilers, offering a comprehensive range of services including boiler installation, servicing, and boiler repair services in London. In today’s blog post, we will be addressing a topic of utmost importance for Ferroli boiler owners and technicians: common Ferroli boiler error codes.
These error codes can be puzzling, but fret not! We are here to provide you with valuable insights into what these error codes mean and how to effectively troubleshoot them.
Whether you’re a homeowner, landlord, or heating professional, join us as we unveil the secrets of Ferroli boiler error codes, helping you maintain optimal performance and reliability for your heating system.
Ferroli Boiler Error Codes
| 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 flue baffle 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 | Domestic hot water (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 170V – 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 water 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 Bluehelix Tech Error Codes
| Fault code | System behaviour | Possible cause |
| A01 | No burner ignition | No gas or ignition – issue with detection electrode, faulty gas valve or insufficient gas supply pressure |
| A02 | Flame signal present with burner off | Electrode error or PCB error |
| A05 | Fan error | No 230V power supply or tachometric signal interrupted fan damaged or out of balance |
| A06 | No flame after the ignition phase | Ionisation electrode fault – flame unstable or air/flue ducts obstructed or condensate trap or pipes blocked |
| F07 – F14 – A07 | High flue gas temperature | The flue gas probe detects excessive temperature |
| F08 – A08 | Overtemperature protection intervention | Heating sensor damaged – no water circulation in the system or air in the system |
| F09 – A09 | Overtemperature protection intervention | Return sensor damaged – no water circulation in the system or air in the system |
| F10 – A10 | Flow sensor error | Sensor damaged – wiring shorted or wiring disconnected |
| F11 – A11 | Return sensor fault | Sensor damaged – wiring shorted or wiring disconnected |
| F12 | DHW sensor error | Sensor damaged – wiring shorted or wiring disconnected |
| F13 – A13 | Flue probe fault | Probe damaged – wiring shorted or wiring disconnected |
| A14 | Flue extraction duct safety device intervention | Fault F07 generated 3 times in the last 24 hours |
| F34 | Supply voltage under 170V | Electric mains trouble |
| F37 | Incorrect system water pressure | Pressure too low – water pressure switch either damaged, blocked or not connected |
| F39 | Optional external probe error | Probe damaged or wiring shorted – probe disconnected after activating the outside temperature mode |
| F41 | Activation of maximum ELTA T protection | Heating sensor damaged, return sensor damaged, no water circulation as air in the system |
| F42 – A42 | Sensor control protection activation | Heating sensor damaged, return sensor damaged or disconnected |
| F43 | Exchanger protection intervention | No system water circulation – air in system |
| A23 – A24 – A26 – F15 – F20 – F21 – F40 – F47 – F50 – F51 – F53 | Printed circuit board (PCB) parameter fault | Wrong PCB parameter setting |
| F56 – A56 | Calibration error / calibration procedure not completed | Incorrect parameters electrode damaged or not correctly positioned |
| F61 – A61 | Printed circuit board (PCB) AGC01 error | PCB AGC01 internal error |
| A54 – A55 – A63 | Printed circuit board (PCB) AGC01 fault | PCB AGC01 fault |
| F67 | – | Boiler chip card (BCC) service key connected |
| F68 – A68 | Boiler chip card (BCC) service key fault | Error loading BCC service key file |
| A62 | No communication between PCB and gas valve | PCB not connected – valve damaged, replace valve |
| A64 | Maximum number of consecutive resets exceeded | Maximum number of consecutive resets exceeded |
| F66 | – | Firmware not loaded successfully |
Ferroli Modena HE System Error Codes
| 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
| 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 printed circuit board (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 – 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 | Domestic hot water (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 or 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 needs 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
Find below a list of error codes for discontinued Ferroli boilers, including:
- Ferroli DOMIcondens HE 26 C
- Ferroli OPTIMAX HE PLUS 31C boiler
- Ferroli 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 |
| 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 |
if you are experiencing issues with your Ferroli boiler? Our team of certified local plumbers in London is here to help! We understand how crucial it is to have a reliable heating system, which is why you can trust our expertise. We also offer emergency gas boiler repair services for your peace of mind. Browse our customer testimonials for reassurance or reach out to us to discuss your needs today!
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