16E High

Biasi 16E Fault Code

The Biasi 16E fault code means: your boiler is confused because it detects temperature changes in the wrong order, likely caused by a sensor issue or a plumbing component being fitted incorrectly.. It appears on 1 Biasi 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: Possible exchange of NTC probes (Flow or Return) or pump wrongly mounted (upside – down)
Typical repair cost £150-250 (including labour)

Engineer required

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

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Biasi models that show the 16E fault code

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

Source

Biasi 16E fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.

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