Verified boiler fault code

Biasi E10 Fault Code (BASICA COND)

Lockout caused by tripping of the flue-gas probe.

Safety disclaimer

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Fault code summary

Manufacturer
Biasi
Fault code
E10
Fault type
Flue, Safety lockout, Temperature sensor
Severity
high
Reset
Use the manufacturer reset procedure only where permitted; a recurring flue lockout requires a qualified engineer.
Applicable models
BASICA COND 24C, BASICA COND 28C, BASICA COND 32C

Quick answer

Lockout caused by tripping of the flue-gas probe.

What does this fault code mean?

Lockout caused by tripping of the flue-gas probe.

Common causes

  • Flue-gas probe tripping

Symptoms

  • E10 shown on the LCD
  • Boiler lockout

What can the homeowner safely check?

  • Check only for an obvious external flue obstruction; do not reset repeatedly or work on the flue.

Boiler reset information

Use the manufacturer reset procedure only where permitted; a recurring flue lockout requires a qualified engineer.

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

  • A qualified engineer should investigate the flue-gas probe, flue route and combustion safety.

Applicable boiler models

Related fault codes

Manufacturer documentation

Biasi BASICA COND user manual and installation instructions

SIGNAL DISPLAYED BY THE LCD: | E10+ | Lockout due to tripping of the flue gas probe |

Last verified

2026-09-12

Frequently asked questions

What does Biasi E10 mean?

Lockout caused by tripping of the flue-gas probe.

Can I reset a Biasi E10 fault?

Use the manufacturer reset procedure only where permitted; a recurring flue lockout requires a qualified engineer.