Ferroli Boiler Error Codes


ferroli boiler error codesThe Ferroli range of powerful, boilers are normally extremely reliable. But things can still go wrong.

Please find our handy at-a-glance table of all the Ferroli error codes below.

Should you need professional help, then simply use one of our enquiry forms and we will connect you with the best heating engineers local to you.

Ferroli error codes

Listed below are some error codes that could appear on your Ferroli DOMIcondens HE 26 C, OPTIMAX HE PLUS 31C boiler or 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
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