Low
t2 on Worcester Bosch 24/28/35 CDi MkII

Your boiler is currently performing a routine self-check of its internal air circulation fan to ensure it is working 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

Fan test. The fan will run for a maximum of 30 seconds. If the fan is OK then the fan will be heard running.

From this model's manual
Verified against the Worcester Bosch Greenstar Cdi Compact installation & service manual, page 71.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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