Green Light Low

Worcester Bosch Green Light Fault Code

Also written as GREENLIGHT — same fault.

The Worcester Bosch Green Light fault code means: your boiler is currently firing up and heating your water or radiators as it should.. It appears on 1 Worcester Bosch 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: Burner on indicator light

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

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Worcester Bosch models that show the Green Light fault code

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

Source

Worcester Bosch Green Light fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

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