Low
353 on Worcester Bosch Greenstar 12i System

Your boiler has temporarily paused itself because it hasn't had a proper break in the last 24 hours, so it is just waiting for a short cooling-off period to restart.

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 12i System installation & service manual, page 64.
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 off the boiler at the electrical spur or fuse spurWait for 30 minutes to allow the boiler components to fully cool downSwitch the power back on and the boiler should resume normal operation automatically

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