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Ferroli Boiler Fault Codes and Errors

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Ferroli is an Italian boiler manufacturer that currently operates in over 14 countries in Europe and Asia. Since its establishment in 1955, Ferroli boilers have been known for their cutting edge designs and aesthetic looks. However, perhaps in its pursuit for breath-taking looks, the manufacturer neglected the efficiency and reliability of its products if customer reviews are anything to go by.

Given such a bad history and the fact that you are currently reading this page, it is easy to conclude that your Ferroli boiler is having some issues. And naturally, you would be trying to crack the fault code displayed on your boiler’s display panel.

But before we get into decoding Ferroli boiler faults and errors, it is essential to state that a simple reset can fix some of the errors displayed on your boiler. However, if a reset doesn’t work, the next thing to do would be to call a certified heating engineer to take a look at your boiler.

How to reset a Ferroli Boiler

Resetting a Ferroli boiler isn’t much of a hassle. All you have to do is locate the reset button normally located at the front of the boiler and hold it down for about 10 seconds. If the reset is successful, the flame will ignite, and the error code will disappear.

One thing to keep in mind though, is that you shouldn’t press the reset button intermittently or repeatedly. This is because repeated pressing can jam your rest button and result in other issues that may require the attention of a boiler engineer.

That said, here are some of the most common Ferroli boiler fault codes.

Most common Ferroli boiler fault codes and how to fix them

  • FH Error Code: This usually is due to a faulty flame detection electrode or PCB unit. Whichever the case, this is a problem you can’t fix on your own, and you need to call in a boiler engineer.
  • AO1 Error Code: This is usually attributed to an ignition error due to a faulty flame detection electrode, a power fault, excess condensation, or an issue with gas supply. Luckily, resolving this issue usually is easy, and all you have to do is check your gas and power supply, then reset the boiler. However, if the problem persists, you need to contact a certified heating engineer to look at your boiler.
  • D1 Error Code: This error code means there is an issue with your boiler’s diverter valve. A heating engineer can fix the problem.
  • T5 Error Code: This implies a non-serious issue with the boiler PCB. To fix it, press the reset button until T5 appears on the display panel. Then, continue holding the reset button until P01 appears on the screen. Once done, set the heating temperature, and hopefully, your boiler should be up and running.
  • A51 Error Code: Usually due to poor combustion. You need to call a heating engineer as you can’t handle this issue on your own.

Ferroli Bluehelix Tech Error and Fault Codes

Fault

Code

Description/ possible causes Fixes
A01 Ignition failure due to gas supply issue, a faulty detection electrode, or low gas pressure. Check your gas supply is working fine. Next, rest your boiler, but if the error doesn’t clear, call a heating engineer.
A02 The flame signal is present despite the burner being off. This is primarily due to a fault with the PCB or flame detection electrode. Call a heating engineer.
A05 A fan issue. Probably due to it lacking power, being damaged, or unbalanced. Call a heating engineer
A06 PCB parameter fault due to wrong settings Call a heating engineer
A14 The flue extraction duct has shut off due to an F07 fault generating 3 times in the last 24 hours. This is a serious safety issue that needs to be checked by a heating engineer.
A23-A26, F15,

F20, F21, F40, F47, F50, F51 & F53

PCB parameter fault due to wrong settings Call a heating engineer
A54, A55 & A63 PCB fault, especially an AGCO1 issue. Call a heating engineer
A62 PCB miscommunication with the gas valve as the valve is damaged. The gas valve may need replacing
A64 There have been too many reset attempts Leave the boiler for a few hours, then attempt resetting it.
F07,F14, & A07 The gas flue is overheating Turn off the boiler and allow it to cool down.
F08 & A08 Damaged heating sensor element due to excessive temperature Call a heating engineer
F09 & A09,

F11 & A11

An issue with the return sensor due to excessive temperature Call a heating engineer
F10 & A10 Damaged flow sensor Call a heating engineer
F12 DHW sensor is damaged Call a heating engineer
F13 & A13 A flue probe issue Call a heating engineer
F34 The electrical supply to the boiler is below 170 V As this is an electrical issue, call an electrical engineer or preferably, a heating engineer
F37 Low water pressure Repressurise the boiler, and if it doesn’t work, call a heating engineer
F39 External probe issue Call a heating engineer
F41 The heating sensor is damaged, and the ELTA T protection feature has been activated. Call a heating engineer
F42 & A42 Damaged heating sensor Replace or fix it. But if you can’t, call a heating engineer
F43 Presence of air in the system resulting in the heat exchanger protection being activated Call a heating engineer
F56 & A56 Calibration error due to damaged or wrongly placed Call a heating engineer
F61 & A61 PCB AGC01 error Call a heating engineer
F66 Boiler not loaded correctly Reset your boiler
F67   Reset
F68 & A68 The boiler chip is faulty, or there has been an error loading it Reset the boiler, but if the error does not clear, call a heating engineer

Ferroli iBoiler Error and Fault Codes

Fault

Code

Description / Possible causes
A01 Ignition failure due to faulty electrodes, low power, no gas supply, or excessive condensate
A02 Electrode or card failure
A03 The heating system is damaged, or there is poor water circulation in the system due to the presence of air.
A04 Boiler card issue
F05 An issue with air pressure switch contacts due to wrong sizing or obstruction of the wrong flue baffle
A06 There is no flame even after an ignition attempt. Probably due to low gas pressure
F07 Air pressure switch error
A09 Gas valve error due to disconnected wiring
F10 Delivery sensor error due to damaged wiring or disconnection
F11 Damaged or disconnected DHW sensor
A15 F05 fault generated 5 times in the last 24 hours
A16 Faulty or disconnected gas valve
A23 & A24 Card  parameter error due to the wrong setting
F34 & F35 The electricity supply to the boiler is below 170V
F37 Water pressure issue. Possibly low water pressure or damaged water pressure switch
F43 Exchanger protection is activated due to the presence of air in the system, or there is no water circulation.
F50 & F51 Internal controller error resulting in a DBM23B error

Ferroli Modena HE Combi Error and Fault Codes

Fault

Code

Description/ Possible causes Fixes
A01 Ignition failure due to gas issue or faulty detection electrode Check your gas supply, then try resetting the boiler. If it doesn’t work, call a heating engineer
A2 The burner is off despite the flame signal being present. It is typically attributed to a faulty PCB or electrode error. Call a heating engineer.
A03 Fan problem Call a heating engineer
A04 Faulty flue gas due to an F07 error occurring thrice in the last 24 hours Call a heating engineer
A05 Faulty fan due to the tachometer signal being interrupted for over an hour Reset the boiler, but if it doesn’t work, call a heating engineer
A06 No flame even after ignition. Probably due to a faulty detection electrode, unstable flame, or incorrect valve setting Call a heating engineer
A41 & A42 The flow sensor is disconnected due to wrong positioning or needs replacing. Call a heating engineer
A61 Damaged gas valve resulting in miscommunication with controller Call a heating engineer
A62 Faulty controller due to occurrence of a 041049G error Call a heating engineer
A63, A64, &F66 DBMI12 fault in the controller Call a heating engineer
F07 Overheating due to excessive temperatures for two minutes or more Allow the boiler to cool down, then reset it
F10 Flow sensor error due to sensor damage or poor wiring, or short-circuiting Call a heating engineer
F11 Error with the return sensor due to it being broken or short-circuited Check your boiler’s wiring or simply call a heating engineer
F12 DHW sensor is faulty or damaged Call a heating engineer
F13 Faulty exchange probe due to broken or shortened wiring Call a heating engineer
F14 Fan issue due to it being damaged or obstructed by debris Clean the fan if you can see and reach it. If not, call a heating engineer
F15 The power supply to the boiler is below 170V Call a heating engineer
F34 Irregular power supply from the mains Call a heating engineer
F35 Incorrect system water pressure due to low water pressure or the water pressure sensor being damaged Repressurise your system, but if it doesn’t work, call a heating engineer
F37 Faulty external probe due to it being damaged or short-circuited Call a heating engineer
F39 The exchanger protection system was activated due to a damaged sensor, air in the system, or poor water circulation. Call a heating engineer.
F43 Faulty or damaged flow exchanger Change the sensor, or call a heating engineer to do the job
F52 Internal controller error due to a 041049G0 fault This is an electrical fault that needs the attention of a certified heating engineer.

Ferroli Modena HE System Boiler Error Codes

The common error codes displayed by the Ferroli Modena HE system boiler are similar to those of the combi boiler. As such, we won’t be creating a list of those as you can use the one above.

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