E14

Dimplex Gas Valve Modulation / Control Fault

Boiler displays E14; burner shuts down unexpectedly; gas valve symbol may flash

Safety Warning

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

Faulty Dimplex modulating gas valve, Loose gas valve harness connection to Dimplex PCB, Incorrect gas valve calibration, PCB output fault to gas valve

How to Fix / Troubleshooting

Safety first: Gas components must only be serviced by a Gas Safe–registered engineer. Do not attempt to adjust the gas valve yourself.

User actions:

Reset the boiler: Perform a power cycle and reset via the Dimplex control panel.
Observe operation: If the boiler repeatedly locks out with E14, stop using it and arrange professional service.

Professional repair:

Test the Dimplex gas valve coil resistance and modulation signal.
Replace the Dimplex gas valve if faulty and commission the boiler with a flue gas analyser.
Check the Dimplex PCB for correct output and replace if necessary.

Repair Difficulty

Professional Required 5/5

Required Part

Dimplex modulating gas valve

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