Low
4-A6 on Worcester Bosch Greenstar 2000

Your boiler is simply reminding you that its scheduled service is due based on the time interval set by your engineer.

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.

Technical description

Inspection interval according to elapsed time: 1... 72 months.

Engineer required

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

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