Low
0-A1 on Worcester Bosch Greenstar 2000

Your boiler has been manually switched off or into a service mode and simply needs to be restarted or reset to resume normal operation.

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

Manual operation: OFF/ON.

DIY fix possible

Locate the main Power/Reset button on the boiler control panel.Press and hold the Reset button for 3 to 5 seconds.Wait for the boiler to complete its startup sequence and return to the home screen.

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