Verified boiler fault code

Ferroli A06 Fault Code (i25 / i29)

No flame after the ignition phase.

Safety disclaimer

Boiler repair help from Aza & Sons Services

Fault code summary

Manufacturer
Ferroli
Fault code
A06
Fault type
Flame failure, Gas supply, Ignition
Severity
lockout
Reset
Ferroli states that A faults cause permanent shutdown and may be restored with RESET only after the fault is eliminated.
Applicable models
Ferroli i25, Ferroli i29

Quick answer

No flame after the ignition phase.

What does this fault code mean?

No flame after the ignition phase.

Common causes

  • Low gas-system pressure.
  • Burner minimum-pressure setting.

Symptoms

  • The display flashes A06 and the boiler permanently shuts down.

What can the homeowner safely check?

  • Check only whether other gas appliances are affected; do not test gas pressure.

Boiler reset information

Ferroli states that A faults cause permanent shutdown and may be restored with RESET only after the fault is eliminated.

When should I call an engineer?

Contact a suitably qualified heating engineer when the fault persists, the boiler locks out, or the manufacturer instructions do not resolve it. For gas appliance work in the UK, use a Gas Safe registered engineer.

Engineer diagnosis

  • Investigate gas pressure, burner setting and flame detection.

Applicable boiler models

Related fault codes

Manufacturer documentation

i25 / i29 Instructions for use, installation and maintenance

Table 9: A06 — No flame after the ignition phase; possible low gas-system pressure or burner minimum-pressure setting.

Last verified

2026-09-12

Frequently asked questions

What does Ferroli A06 mean?

No flame after the ignition phase.

Can I reset a Ferroli A06 fault?

Ferroli states that A faults cause permanent shutdown and may be restored with RESET only after the fault is eliminated.