Ferroli boiler error codes



The international company Ferroli has been designing, developing and manufacturing high-quality equipment for years. More than 50 years, Ferroli produces climatic, heating and auxiliary equipment, including boilers. The equipment Ferroli is distinguished by reliability, safety, efficiency, modern design and low prices. The company carries out technical, service and advertising support. It implies, inter alia, providing information on possible malfunction of its equipment. In particular, see error codes boiler Ferroli table below.

Ferroli DOMIcompact F 30 boiler error codes

Fault Possible cause Cure
F1 – No burner ignition • No gas • Check the regular gas flow to the boiler and the air has been eliminated from the pipes.
• Detection or ignition electrode fault • Check that the electrodes are correctly positioned and free of any deposits
• Defective gas valve • Check and change the gas valve
• Faulty full auto control • Check and change full auto
• System gas pressure insufficient • Check the system gas pressure
• Air-trap blocked • Check and eventually replace the air- trap
F2 -Flame detected with the burner off • Ionization electrode defected • Check the ionizing electrode wiring
• P.C.B. defected • Check the P.C.B.
F3 – 100°C Safety thermostat trips • Flow sensor not active or located correctly • Check the correct positioning
• No system circulation and operation of the flow sensor
• Check the circulator, the by-pass and the valve in the system
F5 – Fan fault • Fan connection or fan damaged, debris in fan • Check the wiring and check the fan
• Clear debris if required
F8 – Flame circuit fault • Ionisation probe fault • Check and rf necessary change the ionisation probe
• Mains interference • Check the earthing
F9 – No communication between the full auto and the gas valve • P.C.B. not connected • Connect the P.C.B. to the gas valve
• Damaged gas valve • Change the gas valve
F10 to F22 – Microprocessor fault • Microprocessor operating fault • Cut off and restore the electricity supply. If the trouble remains, check and/or change the main P.C.B.
F25 – Software fault • Software operating fault
F26 – Flame absence after ignition phase • Ionization electode fault • Check ionization electrode position and eventually replace it
• Flame instable • Check the burner
• Gas valve Offset fault • Verify Offset setting to the minimum power
• Air inlet/flue outlet pipes blocked • Take blockage off the chimney, flue outlet pipes and air inlet pipes
• Air-trap blocked • Check and eventually clean the air- trap
F30 – CH flow sensor fault • Sensor damaged or short circuited • Check the wiring or change the sensor
F31 – CH flow sensor fault • Sensor damaged or wiring broken
F34 – Supply voltage under 190V. or over 250V. • Electric mains fault • Check the electrical system
F35 – Irregular mains frequency • Electric mains fault
F36 – Main P.C.B. fault • Faulty main P.C.B. • Change the P.C.B.
• Water on P.C.B.
F37 (error solution F37) Incorrect system water pressure • Pressure too low • Fill the system
• Sensor damaged • Check the sensor
F39 – External probe fault • Sensor damaged or short- circuited • Check the wiring or replace the sensor
F40 – Incorrect system water pressure • Pressure too high above 3-5 bar • Check the fill loop not passing
• Check the wiring and sensor
• Check the safety valve
• Check the expansion vessel
F43 – Return sensor fault • Sensor damaged or wiring shorted • Check the wiring or change the sensor
F44 – Return sensor fault • Sensor damaged or wiring broken
F45 – Flue gas sensor fault • Sensor damaged or wiring shorted
F46 – Flue gas fault • Sensor damaged or wiring broken
F47 – Probe pressure fault • Wiring interrupted • Check the wiring
• Sensor damaged • Replace the sensor

Ferroli T-ONE boiler error codes

FAULT CODE FAULT POSSIBLE CAUSE CURE
A01 No burner ignition No gas Check the regular gas flow to the boiler and that the air has been purged from the pipes
Detection or Ignition electrode fault Check that the electrodes are correctly positioned and free of any deposits
Defective gas valve Check and change the gas valve
Incorrect inlet gas pressure Check inlet gas pressure
Siphon obstructed Check and if necessary change the siphon
A02 Flame detected with the burner off Ionization electrode defective Check the ionizing electrode wiring
Main board defective Check the PCB
A03 High limit protection Flow temperature sensor not active or correctly located Check the correct positioning and operation of the flow sensor
No system circulation Check pump and radiator valves present in the system Check operation of the internal by-pass
A04 Flue gas fault Fault 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 the ignition phase (6 times in 4 minutes) Detection electrode fault Check that the electrodes are correctly positioned and if necessary change it
Flame unstable Check the burner
Incorrect valve gas Offset Check the Offset at the minimum power
Flue gas circuit obstructed Check if flue gas circuit is free
Siphon obstructed Check and if necessary change the siphon
A41 Flow sensor disconnected Sensor disconnected Check the correct positioning and operation of the flow sensor
F07 High fume temperature The exchanger probe detects and excessive temperature for over 2 minutes Check the exchanger
F10 Flow sensor fault Sensor damaged or short circuited Sensor damaged or wiring broken Check the wiring or change the sensor
F11 Return sensor fault Sensor damaged or viring shorted Sensor damaged or wiring broken
F12 DHW sensor fault Sensor damaged Wiring shorted Wiring disconnected
F13 Exchanger probe fault Sensor damaged or viring shorted Sensor damaged or wiring broken
F14 Flow sensor fault Sensor damaged or short circuited Sensor damaged or wiring broken
F15 Fan problem Tachometer signal interrupted, fan connection Check the wiring and the fan
Fan damaged, debris in fan Check the fan. clean debris
F34 Supply voltage under 170V Electric supply problem Check the electrical system
F35 Irregular mains frequency
F37 (error solution F37) Incorrect system water pressure Pressure too low Fill the system
Sensor damaged Check the sensor
F39 External probe fault Sensor damaged or short-circuited Check the wiring or change the sensor
F42 Flow sensor fault Sensor damaged Change the sensor