How much does it cost to fix Ariston error code E30?

Typical repair cost for the Ariston E30 fault is £120-200 including labour.

E30 High

Ariston E30 Fault Code

Q: What does the Ariston E30 fault code mean?

Your boiler is struggling to read the temperature correctly because a small sensor that tells it how hot the room is has developed a faulty electrical connection.

The Ariston E30 fault code means: your boiler is struggling to read the temperature correctly because a small sensor that tells it how hot the room is has developed a faulty electrical connection.. It appears on 2 Ariston models in our database.

Technical description: Room sensor short circuit

Typical repair cost £120-200 (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 E30 fault code

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

Bravo 24 MFFI Repair: £120-200
Egis 24 MFFI Repair: £90-180

Source

Ariston E30 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