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

Typical repair cost for the Ideal EH fault is £280-550 including labour.

EH High

Ideal EH Fault Code

Q: What does the Ideal EH fault code mean?

Your boiler’s main control screen or internal computer has developed a fault and can no longer communicate with the rest of the system.

The Ideal EH fault code means: your boiler’s main control screen or internal computer has developed a fault and can no longer communicate with the rest of the system.. It appears on 1 Ideal model in our database.

Technical description: Defective control panel.

What causes the Ideal EH fault?

This fault occurs when the link between the boiler's main brain and its display screen is broken, often due to an internal electrical component failure. It is usually caused by age-related wear on the circuit board or a loose connection that prevents the system from sending start-up instructions. Because the control panel can no longer 'talk' to the boiler, the unit shuts down safely to prevent erratic behavior.

Typical repair cost £280-550 (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 EH fault code

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

Maximiser SE Repair: £280-550

Source

Ideal EH 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