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.
Technical description: BCC Error / No flame - Different BCC (BCC’s only fitted to replacement PCB’s)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →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