Boiler shows E15; fan symbol may be present; burner does not ignite

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed tachometer sensor in Dimplex fan assembly, Obstructed fan impeller, Loose fan connector to Dimplex PCB, Faulty Dimplex PCB fan driver circuit

Safety first: Isolate power before accessing the fan compartment. Do not run the boiler with covers removed.

User checks:

Flue terminal: Ensure the external Dimplex flue terminal is clear to avoid overloading the fan.
Reset: After confirming the flue is clear, reset the boiler and see if E15 clears.

Professional repair:

Inspect and clean the Dimplex fan impeller and housing.
Test tachometer feedback to the Dimplex PCB and replace the fan assembly if defective.
Check PCB fan driver output and replace the Dimplex PCB if required.

Hard 4/5

Dimplex flue fan assembly

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