How much does it cost to fix Ariston error code 14?

Typical repair cost for the Ariston 14 fault is £150-350 including labour.

14 Emergency

Ariston 14 Fault Code

Q: What does the Ariston 14 fault code mean?

Your boiler is struggling to clear fumes properly, so it has safely shut itself down to prevent carbon monoxide buildup.

The Ariston 14 fault code means: your boiler is struggling to clear fumes properly, so it has safely shut itself down to prevent carbon monoxide buildup.. It appears on 6 Ariston models in our database.

Technical description: General check of the discharge/ventilation of the combustion byproducts.

Typical repair cost £150-350 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ariston models that show the 14 fault code

Click a model for the full fault code list and model-specific repair notes.

Challenger 80E Repair: £150-350
E-Combi One Repair: £150-350
E-Combi One 30 Repair: £150-350
Euro Combi 30 MFFI Repair: £100-280
Euro Prisma 24 Repair: £100-280
Microsystem 15 Repair: £150-350

Source

Ariston 14 fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026