Unknown
C1 on Worcester Bosch Bosch Greenstar ZWBR 7-25A

Worcester Bosch Bosch Greenstar ZWBR 7-25A fault code C1

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

Air pressure switch contacts open when appliance is operating or fan speed to slow.

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Bosch Greenstar Mk1 I S 1999 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 15 fault codes on the Bosch Greenstar ZWBR 7-25A

Seeing a different code? Every code this model can display, in one place.

A5A7ACb1C4C6CCd3E0E2E9EAF7FA

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