24 High

Halstead 24 Fault Code

The Halstead 24 fault code means: your boiler has identified a communication problem with the fan, which means it cannot safely start the burner to provide heat or hot water.. It appears on 2 Halstead models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Faulty fan signal, no flame and fan runs continuously. Missing or defective signal from fan.
Typical repair cost £220-450 (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 24 fault code

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

Source

Halstead 24 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 31 August 2026