Ferroli Combi Boiler Error Codes

Ferroli Combi Boiler Error Codes Ferroli claims that it is the relentless consumer demand and the need to address climate change that keeps “Ferroli at the leading edge of appliance design”. Well, design may be a strong point for Ferroli boilers, but are they as reliable as they are aesthetically pleasing? If you’re reading this blog, you’re probably dubious about this claim.

Ferroli Combi Boiler Error Code Solutions

Ferroli Boiler Error Codes
Fault CodeSystem Behaviour
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

Ferroli Modena HE System Error Codes

Fault CodeSystem Behaviour
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
A63 / A64 / F66Controller ABM03B error – controller internal error
Ferroli Modena HE Combi Error Codes
Fault CodeSystem Behaviour
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
A63 / A64 / F66Controller DBM12 fault

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