Low
273 on Worcester Bosch 24/28/35 CDi MkII

Your boiler has automatically paused its operation because it has been running non-stop for a full day, which is a safety feature to ensure the system is functioning correctly.

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

Operation interrupted: safety inspection following 24 hours of continuous operation.

From this model's manual
Verified against the Worcester Bosch Greenstar Cdi Compact installation & service manual, page 65.
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

Switch the boiler off at the mains power supplyWait for 30 seconds to allow the system to resetTurn the power back on to see if the error clears

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