Heatline S.32 Fault Code
Also written as S32 — same fault.
The Heatline S.32 fault code means: your boiler is struggling to get the internal fan spinning at the right speed to safely clear exhaust gases, so it has stopped working as a safety precaution.. It appears on 8 Heatline models in our database.
Technical description: Tolerance indication time of fan speed.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Heatline models that show the S.32 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Heatline S.32 fault code information on this page is sourced and cross-checked against the official Heatline service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026