7 High

Dimplex 7 Fault Code

The Dimplex 7 fault code means: your boiler has stopped working because the internal fan is not spinning at the correct speed, preventing the boiler from lighting safely.. It appears on 2 Dimplex 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: Defective fan / No flame - Missing or Erroneous RPM signal
Typical repair cost £250-£450 (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 7 fault code

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

Source

Dimplex 7 fault code information on this page is sourced and cross-checked against the official Dimplex service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026