How much does it cost to fix Ideal error code 037?

Typical repair cost for the Ideal 037 fault is £120-200 including labour.

037 High

Ideal 037 Fault Code

Q: What does the Ideal 037 fault code mean?

Your boiler has detected a faulty connection to a temperature sensor, which is preventing it from monitoring heat levels safely and shutting it down to prevent damage.

The Ideal 037 fault code means: your boiler has detected a faulty connection to a temperature sensor, which is preventing it from monitoring heat levels safely and shutting it down to prevent damage.. It appears on 1 Ideal model in our database.

Technical description: NTC open 2

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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Ideal models that show the 037 fault code

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

Maximiser SE Repair: £120-200

Source

Ideal 037 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