How much does it cost to fix Ideal error code 019?

Typical repair cost for the Ideal 019 fault is £150-300 including labour.

019 High

Ideal 019 Fault Code

Q: What does the Ideal 019 fault code mean?

Your boiler is shutting down because it has detected that the water returning from your radiators is hotter than it expects, suggesting the system is struggling to circulate water properly.

The Ideal 019 fault code means: your boiler is shutting down because it has detected that the water returning from your radiators is hotter than it expects, suggesting the system is struggling to circulate water properly.. It appears on 1 Ideal model in our database.

Technical description: Return temperature T2 too high

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 019 fault code

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

Maximiser SE Repair: £150-300

Source

Ideal 019 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