Low
1070 on Worcester Bosch Greenstar 4000 System

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.

Shared across the Greenstar 4000 range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
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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All 105 fault codes on the Greenstar 4000 System

Seeing a different code? Every code this model can display, in one place.

20020120220320420821422422722823223323423523723824224524925025125225325425825926226326526826927328128328430530635335735836036236381081110101013101710181019102110221023103710651068107110721073107410751076208529082910291429152916292029232927292829312940294629482949295029512951 V29522952 V29572957 V29612961 V29622962 V29632963 B29642964 B29652965 B29662966 B29672967 B29702970 B29712971 B29722972 V

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