How much does it cost to fix Dimplex error code b?

Typical repair cost for the Dimplex b fault is £120-250 including labour.

b High

Dimplex b Fault Code

Q: What does the Dimplex b fault code mean?

Your boiler has failed to ignite a flame and likely needs a new internal configuration chip to be correctly set up by a professional.

Also written as B — same fault.

The Dimplex b fault code means: your boiler has failed to ignite a flame and likely needs a new internal configuration chip to be correctly set up by a professional.. It appears on 1 Dimplex model in our database.

Technical description: Activate BCC / No flame - New BCC

Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Dimplex models that show the b fault code

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

OV 32 Repair: £120-250

Source

Dimplex b fault code information on this page is sourced and cross-checked against the official Dimplex service / installation manuals for each affected model.

Dimplex OV 32 manual (PDF)

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026