BoilerFaultCodesHalstead 0001 Fault Code
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 3 Halstead models in our database.
Technical description: Overheat protection: flow and return thermostats monitor abnormal temperatures
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 7 July 2026