Ferroli A08 Fault Code

The Ferroli A08 fault code means: your boiler has stopped working because it cannot detect a rise in temperature when it tries to heat your water, suggesting a sensor is failing to report its readings correctly.. It appears on 4 Ferroli models in our database.

Technical description: Heating sensor or domestic hot water sensor disconnected from the flow pipe (normally, after a 5-minute heating order, the temperature increases on the flow pipe sensor and on the domestic hot water sensor do not exceed 3°C. No temperatures above 40°C are detected).