BoilerFaultCodesFerroli A06 Fault Code
The Ferroli A06 fault code means: your boiler is failing to detect a flame after it tries to start up, meaning it cannot provide heating or hot water.. It appears on 12 Ferroli models in our database.
Technical description: No flame after the ignition phase – electrode error, flame unstable, incorrect valve gas offset or flue gas circuit obstructed
What causes the Ferroli A06 fault?
This fault happens when the boiler's control system cannot confirm that a flame has successfully lit after trying to start. The most common reasons are a worn-out ignition spark or a dirty sensor that fails to 'see' the flame, though it can also be caused by an incorrect mix of gas and air. Because the boiler cannot guarantee it is burning fuel safely, it shuts down as a protective measure.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Ferroli models that show the A06 fault code
Click a model for the full fault code list and model-specific repair notes.
- Arean Repair: £120-250
- Arena 30A Repair: £120-250
- BlueHelix Pro 25C Repair: £120-350
- BlueHelix Pro 32C Repair: £120-350
- Bluehelix Tech Repair: £120-350
- Domiproject Repair: £120-250
- Econcept 100 Repair: £120-250
- iBoiler 24 Repair: £100-£250
- iBoiler 28 Repair: £100-250
- Modena HE Repair: £120-280
- Optima 201 Repair: £120-250
- Optimax Repair: £100-280
Source
Ferroli A06 fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026