Green LED: On | Red LED: Off Low

Vokera Green LED: On | Red LED: Off Fault Code

Also written as GREENLEDONREDLEDOFF — same fault.

The Vokera Green LED: On | Red LED: Off fault code means: your boiler is working normally and is simply indicating that a hot water tap is currently turned on somewhere in your home.. It appears on 2 Vokera models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: DHW request

What causes the Vokera Green LED: On | Red LED: Off fault?

This status occurs when the boiler detects water flowing through the domestic hot water pipework. A flow switch inside the unit senses the movement of water and signals the burner to ignite in order to heat the water for your shower or taps. It is a sign of normal operation rather than a mechanical failure.

DIY fix possible

Check that all hot water taps are fully closedEnsure there are no leaking hot water taps or dripping showersMonitor the lights; the red light should remain off and the green light will stay on while water is running

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Vokera models that show the Green LED: On | Red LED: Off fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Vokera Green LED: On | Red LED: Off fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026