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2024 Ferroli Boiler Error & Fault Codes


Error codes can be a frustrating inconvenience if you’re not prepared for them. However, knowing a little bit more about what each one means can be quite valuable when you have a limited time to diagnose the issue. Understanding what your error code means is the best way to ensure that you get your boiler back up and running in no time – without incurring unnecessary expenses.

When your Ferroli boiler displays a fault code, the first step is to determine what it means. Codes can be long and abbreviated with many characters, and these can sometimes be confusing for customers. Our table breaks down all the most common codes into a simple searchable column, enabling you to quickly identify the problem.

If your Ferroli boiler is giving you a fault code, there’s something wrong. These error codes can sometimes be hard to decipher – so we’ve provided a comprehensive guide for you to check against your own boiler to tell you exactly what the problem is. With this information you can contact your local engineer to fix it, or get some free quotes to compare direct.

Bluehelix Tech Error Codes


The Ferroli Bluehelix Tech may develop problems that indicate a fault developing inside the boiler. If your boiler is giving off an error code, it’s important to check what it means and who you should contact to fix it.

If you’re having problems with your Bluehelix Tech, you’ll want to know how to fix it. The error codes on this page cover the essentials, like boiler starts up and shuts down, boiler operates with limited performance, and more.

Fault Code Possible Cause
A01No burner ignition
A02Flame signal present with burner off
A05Fan error
A06No flame after the ignition phase
F07High flue gas temperature
F14High flue gas temperature
A07High flue gas temperature
F08Overtemperature protection intervention
A08Overtemperature protection intervention
F09Overtemperature protection intervention
A09Overtemperature protection intervention
F10Flow sensor error
A10Flow sensor error
F11Return sensor fault
A11Return sensor fault
F12DHW sensor error
F13Flue probe fault
A13Flue probe fault
A14Flue extraction duct safety device intervention
F34Supply voltage under 170V
F37Incorrect system water pressure
F39Optional external probe error
F41Activation of maximum ELTA T protection
F42Sensor control protection activation
A42Sensor control protection activation
F43Exchanger protection intervention
A23Printed circuit board (PCB) parameter fault
A24Printed circuit board (PCB) parameter fault
A26Printed circuit board (PCB) parameter fault
F15Printed circuit board (PCB) parameter fault
F20Printed circuit board (PCB) parameter fault
F21Printed circuit board (PCB) parameter fault
F40Printed circuit board (PCB) parameter fault
F47Printed circuit board (PCB) parameter fault
F50Printed circuit board (PCB) parameter fault
F51Printed circuit board (PCB) parameter fault
F53Printed circuit board (PCB) parameter fault
F56Calibration error / calibration procedure not completed
A56Calibration error / calibration procedure not completed
F61Printed circuit board (PCB) AGC01 error
A61Printed circuit board (PCB) AGC01 error
A54Printed circuit board (PCB) AGC01 fault
A55Printed circuit board (PCB) AGC01 fault
A63Printed circuit board (PCB) AGC01 fault
F68Boiler chip card (BCC) service key fault
A68Boiler chip card (BCC) service key fault
A62No communication between PCB and gas valve
A64Maximum number of consecutive resets exceeded

iBoiler Error Codes


When your iBoiler is giving off an error code, you’ll need to know what it means. The error codes provided on this page make it easy for you to check if a problem’s developing in your boiler. You can then contact your local engineer for information on how to fix the problem or to ask for a few quotes.

Fault Code Possible Cause
A01Ignition error – possible electrode fault or power too low, no gas or excessive condensate level
A02Electrode or card error
A03Heating sensor damaged, no water circulation or air in system
F04Wrong card parameter setting
F05Air pressure switch contact error – wrong flue baffle obstructed or not correctly sized
A06No flame after the ignition phase – low pressure in gas system burner minimum pressure setting
F07Air pressure switch error – contacts closed on activation of fan
A09Gas valve error – wiring could be disconnected or error with gas valve
F10Delivery sensor error, sensor damaged wiring shorted or disconnected
F11Domestic hot water (DHW) sensor error – sensor damaged, wiring shorted or disconnected
A15Fault F05 generated 5 times within the last 24 hours – possible error with the air pressure switch
A16Gas valve error – wiring disconnected or faulty gas valve
A23Card parameter error – possibly wrong card parameter setting
A24Card parameter error – possibly wrong card parameter setting
F34Supply voltage under 170V – electric mains error
F35Faulty mains frequency – electric mains error
F37Error with system water pressure, possible pressure too low or water pressure switch is damaged
F43Exchanger protection intervention – could be because no system water circulation or there’s air in the system
F50Controller DBM23B error – controller could have an internal error
F51Controller DBM23B error – controller could have an internal error

Modena HE System Boiler Error Codes


If you’ve noticed your Modena boiler giving off unusual sounds or have found that certain appliance, such as weak water pressure, are not working normally, it may be that an error code has been triggered. The good news is that the error codes provided on this page make it easy for you to check what kind of problem’s developing in your boiler. Then, you can get in touch with a local engineer to rectify the problem and carry out any necessary repairs.

Fault Code Possible Cause
A01No burner ignition – possible electrode error, defective gas valve or incorrect inlet gas pressure
A02Flame detected with the burner off – electrode defective main board defective
A03High limit protection – possible flow temperature sensor not active or incorrectly located, no system circulation
A04Flue gas fault – fault F07 happened 3 times in the last 24 hours
A05Fan error – tachometer signal interrupted for 1 hour or longer
A06No flame after the ignition phase – electrode error, flame unstable, incorrect valve gas offset or flue gas circuit obstructed
A41Flow sensor error – sensor disconnected
A42Flow sensor error – sensor damaged
F07High fume temperature – the exchanger probe detects an excessive temperature
F10Flow sensor error – sensor damaged, short circuited, sensor damaged or wiring broken
F11Return sensor error – t-sensor damaged, short circuited, sensor damaged or wiring broken
F13Exchanger probe error – t-sensor damaged, short circuited, sensor damaged or wiring broken
F14Flow sensor error – t-sensor damaged, short circuited, sensor damaged or wiring broken
F15Fan problem – tachometer signal interrupted fan connection or damaged debris in fan. You need to check and clean fan debris
F34Supply voltage under 170v – electric supply error
F35Irregular mains frequency – electric supply problem
F37Incorrect system water pressure error – possible sensor damaged or pressure too low
F43Exchanger protection activation – no system circulation air in system
F52Flow sensor – fault sensor damaged
A61Controller ABM03B error – controller has an internal error
A62No communication between controller and gas valve – controller not connected or valve damaged
A63Controller ABM03B error – controller internal error
A64Controller ABM03B error – controller internal error
F66Controller ABM03B error – controller internal error
A01No burner ignition – possibly no gas, detection or ignition electrode fault, defective gas valve, incorrect inlet gas pressure
A02Flame 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
A03High 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
A04Flue gas fault – could be because F07 happened 3 times in the last 24 hours – check the flue
A05Fan problem – tachometer signal interrupted for 1 hour or longer – check the wiring and the fan
A06No flame after ignition phase – possible causes: detection electrode fault, flame unstable, incorrect valve gas offset, flue gas circuit
A41Flow sensor disconnected – check the correct positioning and operation of the flow sensors
A42Flow sensor fault – sensor needs changing
F07High fume temperature – the exchanger probe detects an excessive temperature for over 2 minutes – check the exchanger.
F10Flow sensor fault – possible causes: sensor damaged, short circuited or wiring broken check the wiring
F11Return sensor fault – sensor wiring shorted or broken – check the wiring
F12Domestic hot water (DHW) sensor fault – sensor damaged, wiring shorted or wiring disconnected – check the wiring
F13Exchange probe fault – wiring shorted or wiring broken – check wiring
F14Fan problem – tachometer signal interrupted fan connection. Fan damaged or debris in fan – check the wiring, the fan and clean debris
F15Supply voltage under 170v – electric supply problem – the electrical system needs checking
F34Irregular mains frequency – possible electric supply problem – the electrical system needs checking
F35Incorrect system water pressure – possible cause is pressure too low or sensor damaged – the system may need filling or check the sensor
F37External probe fault sensor damaged or short circuited – check the wiring
F39Exchanger protection activation – possibly caused by no system circulation, air in the system or sensor damaged
F43Flow sensor fault – sensor damaged – sensor needs changing
F52Controller 041049G0 fault – controller internal error
A61No communication between controller and gas valve controller – could not be connected or valve damaged
A62Controller 041049G – internal error
A63Controller DBM12 fault
A64Controller DBM12 fault
F66Controller DBM12 fault
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