BoilerFaultCodesDimplex 7 Fault Code
The Dimplex 7 fault code means: your boiler has shut down because the exhaust fumes have reached an unsafe temperature, triggered to prevent damage to the internal components.. It appears on 3 Dimplex models in our database.
Technical description: Overheated appliance - Flue over temperature > 92°C
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 7 July 2026