Unknown
1C on Worcester Bosch Greenstar Highflow

Worcester Bosch Greenstar Highflow fault code 1C

What the manual says

Manufacturer manual

Fan fault

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Highflow 550 Cdi 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.

Engineer required

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

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All 70 fault codes on the Greenstar Highflow

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