BoilerFaultCodesBiasi E05 Fault Code
The Biasi E05 fault code means: your boiler has stopped working because the fan that helps remove waste gases is not spinning at the correct speed or communicating properly with the control board.. It appears on 10 Biasi models in our database.
Technical description: Faulty fan control system
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 E05 fault code
Click a model for the full fault code list and model-specific repair notes.
- Activ A Repair: £120-250
- Activ A Repair: £120-250
- Advance Plus 16S 25S 30S Repair: £120-250
- Advance Plus 16S 25S 30S Repair: £150-250
- Basica Combi Repair: £180-350
- Basica System 2022 Repair: £180-350
- Dina Repair: £150-350
- Inovia 2020 Repair: £220-£450
- Inovia 2020 Repair: £180-350
- Rinnova Adaptive Combi Repair: £100-£250
Source
Biasi E05 fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.
- Biasi Activ A manual (PDF)
- Biasi Advance Plus 16S 25S 30S manual (PDF)
- Biasi Basica Combi manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026