BoilerFaultCodesBaxi E384 Fault Code
The Baxi E384 fault code means: your boiler thinks it sees a flame even though the gas supply should be turned off, which is a safety conflict that prevents the system from starting.. It appears on 24 Baxi models in our database.
Technical description: Flame detected when gas valve off
What causes the Baxi E384 fault?
This fault occurs when the boiler's internal sensors detect a flame after the heating cycle has ended and the gas should be cut off. The most common reason is a gas valve that is physically stuck open or leaking, though it can also be caused by an electrical 'ghost' signal from a damaged sensor or a faulty control board.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Baxi models that show the E384 fault code
Click a model for the full fault code list and model-specific repair notes.
- 400 Combi (range) Repair: £120-300
- 600 Combi (range) Repair: £100-280
- 800 Repair: £120-300
- 80e Repair: £100-280
- Assure Repair: £120-350
- Bermuda Repair: £120-280
- Duo-tec Combi Repair: £120-350
- Eco Compact Repair: £120-350
- Eco Elite Repair: £120-300
- EP Repair: £120-350
- Netaheat Repair: £120-350
- Performa Repair: £120-280
- Profile Repair: £120-280
- Profile Prima Repair: £120-350
- Statesman Repair: £120-350
- Suprima 100 Repair: £120-£350
- Suprima 115 Repair: £150-£350
- Suprima 30 Repair: £180-350
- Suprima 40 Repair: £180-350
- Suprima 50 Repair: £180-350
- Suprima 60 Repair: £120-280
- Suprima 70 Repair: £120-350
- Suprima 80 Repair: £150-350
- Titanium Repair: £120-£350
Source
Baxi E384 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 27 April 2026