Green LED Flashing every 6-seconds Low

Halstead Green LED Flashing every 6-seconds Fault Code

Also written as GREENLEDFLASHINGEVERY6SECONDS — same fault.

The Halstead Green LED Flashing every 6-seconds fault code means: your boiler is working correctly and is simply sitting in standby mode waiting for you to turn on the heating or hot water.. It appears on 1 Halstead model 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: At stand-by with no faults
Typical repair cost £0 (including labour)

DIY fix possible

Check that your room thermostat is turned upEnsure your heating programmer or timer is set to 'On'Turn on a hot water tap to see if the boiler fires up

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Halstead models that show the Green LED Flashing every 6-seconds fault code

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

Source

Halstead Green LED Flashing every 6-seconds fault code information on this page is sourced and cross-checked against the official Halstead service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026