Medium
C32 on Sime Format B Combi

Your boiler's external temperature sensor is not communicating correctly, which may cause your heating system to run inefficiently or shut down.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

C32

From this model's manual
Verified against the Sime Format B Combi installation & service manual, page 14.
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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Related fault codes

C31View →C33View →

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