BoilerFaultCodesDimplex 41 Fault Code
The Dimplex 41 fault code means: your boiler is struggling to circulate water properly, causing the flame to cut out shortly after it starts to prevent overheating.. It appears on 2 Dimplex models in our database.
Technical description: Waterflow failure/ Flame fora short period only. Low waterpressure / Reversed sensors
DIY fix possible
Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.If the pressure is low, use the external filling loop to top it up to the correct level.Ensure all radiator valves and isolation valves under the boiler are fully open.
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Dimplex models that show the 41 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Dimplex 41 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