How much does it cost to fix Ideal error code H A?

Typical repair cost for the Ideal H A fault is £150-300 including labour.

H A High

Ideal H A Fault Code

Q: What does the Ideal H A fault code mean?

Your boiler has detected that it is getting too hot and has automatically shut down to prevent any internal damage.

Also written as HA — same fault.

The Ideal H A fault code means: your boiler has detected that it is getting too hot and has automatically shut down to prevent any internal damage.. It appears on 6 Ideal models in our database.

Technical description: Overheat condition (check if ALL radiators have thermostatic radiator valves fitted)

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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Ideal models that show the H A fault code

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

Source

Ideal H A 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