Low
353 on Worcester Bosch Greenstar 28CDi

Your boiler has temporarily paused itself because it hasn't had a proper rest period in the last day, and it should clear on its own once it cools down.

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

-- Burn temporarily blocked due to no 20 minute continuous OFF time in last 24 hours.

From this model's manual
Verified against the Worcester Bosch Greenstar 28cdi Compact installation & service manual, page 66.
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

Wait for at least 20 minutes with the boiler switched offEnsure your heating programmer is set correctlyTurn the boiler back on and see if it resumes normal operation

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