Er14 High

Biasi Er14 Fault Code

Also written as ER14 — same fault.

The Biasi Er14 fault code means: your boiler has detected an issue with water flow or heat blockage within its internal heating system, causing it to stop working to protect itself.. It appears on 2 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: Condensing heat exchanger / C.h. circuit - check Condensing heat exchanger, C.h. circuit
Typical repair cost £150-350 (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 Er14 fault code

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

Source

Biasi Er14 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