F
Ferroli Fault Codes
Select a fault code to see its meaning, common causes and how to fix it.
- A01 The A01 code appears when your Ferroli boiler has attempted to light the burner but failed to establish a flame. As a… Read more →
- F05 The F05 code on a Ferroli boiler indicates that the air pressure switch (APS) is not detecting the correct conditions… Read more →
- F1 The F1 code on a Ferroli boiler points to one of two issues depending on the model: low system water pressure (the most… Read more →
- F3 The F3 code indicates that your Ferroli boiler's internal safety thermostat has activated and shut the boiler down.… Read more →
- F37 The F37 code appears when the boiler's water pressure sensor detects that system pressure has dropped to around 0.4 bar… Read more →