Low
1070 on Worcester Bosch Greenstar 4000

Your boiler is simply reminding you that it is time for its annual health check and service to keep it running efficiently.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

Maintenance is due on <dd.mm.yyyy> please call your service engineer | Advanced service reminder warning.

From this model's manual
Verified against the Worcester Bosch Greenstar 4000 installation & service manual, page 75.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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