How much does it cost to fix Ariston error code E27?

Typical repair cost for the Ariston E27 fault is £150-300 including labour.

E27 High

Ariston E27 Fault Code

Q: What does the Ariston E27 fault code mean?

Your boiler is struggling to correctly detect or manage the level or flow of water within its internal storage system, which is preventing it from heating your home properly.

The Ariston E27 fault code means: your boiler is struggling to correctly detect or manage the level or flow of water within its internal storage system, which is preventing it from heating your home properly.. It appears on 2 Ariston models in our database.

Technical description: Tank fault warning

Typical repair cost £150-300 (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 E27 fault code

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

Bravo 24 MFFI Repair: £150-300
Egis 24 MFFI Repair: £100-250

Source

Ariston E27 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