E06 High

Biasi E06 Fault Code

The Biasi E06 fault code means: your boiler has detected a problem with the sensor that monitors the temperature of the water being sent to your radiators, which prevents the heating from running safely.. It appears on 12 Biasi models 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: C.H. heating delivery probe NTC fault
Typical repair cost £90-160 (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 E06 fault code

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

Source

Biasi E06 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 27 April 2026