BoilerFaultCodesBiasi Er 14 Fault Code
Also written as ER14 — same fault.
The Biasi Er 14 fault code means: your boiler has safely shut itself down due to a safety lock-out, meaning it needs to be manually reset or checked by a professional before it will work again.. It appears on 21 Biasi models in our database.
Technical description: Appliance lock-out
DIY fix possible
Locate the reset button or dial on your Biasi boiler control panel.Press and hold the reset button for about 3 to 5 seconds.Wait to see if the boiler fires up normally; if the code returns, do not keep resetting it.
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Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like Er 14: no call-out fees, no surprise bills.
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Biasi models that show the Er 14 fault code
Click a model for the full fault code list and model-specific repair notes.
- Activ A Repair: £150-300
- Advance 25C Repair: £90-250
- Advance 25S Repair: £90-250
- Advance 25S Repair: £150-350
- Advance 30C Repair: £90-250
- Advance 30C Repair: £150-350
- Advance 30S Repair: £90-250
- Advance 30S Repair: £150-350
- Advance 35C Repair: £90-250
- Advance 35C Repair: £150-350
- Advance Plus Repair: £150-300
- Advance Plus Repair: £150-350
- Advance Plus 16S Repair: £150-300
- Advance Plus 16S 25S 30S Repair: £150-300
- Advance Plus 25C Repair: £90-250
- Advance Plus 30C Repair: £90-250
- Advance Plus 30S Repair: £150-300
- Advance Plus 30S ErP Repair: £90-250
- Advance Plus 30S ErP Repair: £150-350
- Advance Plus 30S ErP Repair: £150-350
- Advance Plus 35C Repair: £90-250
Source
Biasi Er 14 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 31 August 2026