| 70-80 | Safety position due to ignition failure (Elexia Comfort CF/FF with LED bar). | If the gas inlet valve (ref. 61303533) is closed, seized, or not opening, gas will not reach the burner and the boiler will enter ignition lockout; check that the handle is aligned with the pipe and confirm gas supply/pressure at the inlet connection. |
| 5 01 | Flame absence (ignition/ionisation failed). | A closed or faulty gas inlet valve prevents gas from reaching the block/burner, the flame does not ionize, and the boiler displays 5 01; confirm the valve is open and check the inlet pressure with a manometer, and bleed the gas if necessary. |
| 501 | Flame absence (equivalent to 5 01 in many models). | If the gas inlet valve is closed/faulty or there is no supply, the burner does not receive gas and the boiler confirms the absence of a flame; check the valve is open, the presence of gas in the property, and inlet pressures. |
| E01 | Lockout due to ignition fault / flame not detected (Pigma/Urbia family and similar). | A gas inlet valve that does not open or is closed prevents supply to the burner and causes ignition fault E01; check that the gas valve is open and that there is pressure/supply at the boiler inlet. |
