How much does it cost to fix Ideal error code SE?

Typical repair cost for the Ideal SE fault is £80-120 including labour.

SE Low

Ideal SE Fault Code

Q: What does the Ideal SE fault code mean?

Your boiler is simply reminding you that its annual service is due soon; it is a notification rather than a breakdown.

The Ideal SE fault code means: your boiler is simply reminding you that its annual service is due soon; it is a notification rather than a breakdown.. It appears on 4 Ideal models in our database.

Technical description: For service timer function refer to separate instructions.

What causes the Ideal SE fault?

This message is triggered by an internal clock within the boiler's control board that counts down the months since your last professional inspection. It is not caused by a mechanical failure or a broken part, but rather a pre-set software timer designed to encourage regular maintenance. Once the set time period has elapsed, the display shows this code to remind you to book a Gas Safe engineer.

Typical repair cost £80-120 (including labour)

Engineer required

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

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Ideal models that show the SE fault code

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

Source

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

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