37 High

Halstead 37 Fault Code

The Halstead 37 fault code means: your boiler's main control board has lost connection with its configuration chip or the chip is incorrect, meaning the system cannot safely confirm if the burner is lit.. It appears on 8 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: BCC Error / No flame - Different BCC (BCC’s only fitted to replacement PCB’s)
Typical repair cost £180-350 (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 37 fault code

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

Source

Halstead 37 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