BoilerFaultCodesBaxi 384 Fault Code
The Baxi 384 fault code means: your boiler has detected what it thinks is a flame inside the unit when the gas is supposed to be turned off, so it has shut down for safety.. It appears on 11 Baxi models in our database.
Technical description: False Flame
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Baxi models that show the 384 fault code
Click a model for the full fault code list and model-specific repair notes.
- 124 Combi Repair: £120-£350
- 200 / 400 Combi Repair: £150-300
- 600 Combi (range) Repair: £140-350
- 624 Combi Repair: £120-£350
- Assure Repair: £120-250
- EcoBlue Repair: £150-300
- Ecoblue Advance Combi Repair: £150-300
- EcoBlue Advance Heat Repair: £120-350
- EcoBlue Heat Repair: £120-300
- EcoBlue Plus Combi Repair: £120-300
- EcoBlue System Repair: £150-300
Source
Baxi 384 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026