Low
1023 R on Worcester Bosch Greenstar 2000

Your boiler has been running for a very long period without a break and has temporarily paused itself for safety and maintenance reasons.

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

Maximum run time including standby time reached

From this model's manual
Verified against the Worcester Bosch Greenstar 27cdi installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Press the Reset button on the boiler control panelSwitch the boiler power off at the wall socket, wait 30 seconds, and switch it back onCheck that your thermostat is not set to a temperature much higher than needed

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