BoilerFaultCodesDimplex 0 Fault Code
The Dimplex 0 fault code means: your boiler is struggling to push water through the system properly, causing it to shut down shortly after the flame starts to prevent overheating.. It appears on 1 Dimplex model in our database.
Technical description: Differentcheck faulty / Flame for 15 seconds - Water flow rate too low
DIY fix possible
Check that all radiator valves are fully openEnsure the external pump is running if accessibleCheck the system pressure gauge and top up if below 1.5 barBleed all radiators to remove trapped air
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Dimplex models that show the 0 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Dimplex 0 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