High
34 on Halstead Dimplex System

Your boiler's internal computer is having a communication error or failing to detect a flame, often caused by an incorrect configuration chip.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

CRC Error/ No flame. Incorrect BCC (BCC’s only fitted to replacement PCB’s)

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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