3.2.8 High

Baxi 3.2.8 Fault Code

Also written as 328 — same fault.

The Baxi 3.2.8 fault code means: your boiler has detected a blockage in the pipe that drains away waste water, causing it to shut down to prevent internal damage.. It appears on 1 Baxi model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Condensate darin
Typical repair cost £80-150 (including labour)

DIY fix possible

Locate the plastic pipe exiting the boiler to the outside or a drain.Check the external end of the pipe for blockages like ice, leaves, or debris.If frozen, pour warm (not boiling) water over the outside pipe to melt the obstruction.

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Baxi models that show the 3.2.8 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi 3.2.8 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026