How much does it cost to fix Halstead error code 0001?

Typical repair cost for the Halstead 0001 fault is £150-300 including labour.

0001 High

Halstead 0001 Fault Code

Q: What does the Halstead 0001 fault code mean?

Your boiler has detected that it is running too hot and has automatically shut itself down to prevent any damage to the internal components.

The Halstead 0001 fault code means: your boiler has detected that it is running too hot and has automatically shut itself down to prevent any damage to the internal components.. It appears on 10 Halstead models in our database.

Technical description: Overheat protection: flow and return thermostats monitor abnormal temperatures

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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Halstead models that show the 0001 fault code

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

Source

Halstead 0001 fault code information on this page is sourced and cross-checked against the official Halstead service / installation manuals for each affected model.

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