BoilerFaultCodesBaxi 153 Fault Code
The Baxi 153 fault code means: your boiler has been manually reset too many times and has temporarily locked itself to prevent further issues.. It appears on 26 Baxi models in our database.
Technical description: Forced reset unit unlocked
What causes the Baxi 153 fault?
This fault occurs when the reset button has been pressed more than five times within a one-hour period. It is a safety feature designed to prevent you from repeatedly trying to start a boiler that has a persistent internal problem. The boiler essentially stops responding to resets to protect its components from further damage.
DIY fix possible
Switch the boiler electrical supply off at the spur switchWait for at least 30 secondsSwitch the power back on to allow the system to clear the lockout
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Baxi models that show the 153 fault code
Click a model for the full fault code list and model-specific repair notes.
- 400 Combi (range) Repair: £80-120
- 800 Repair: £0-120
- 80e Repair: £0-120
- Assure Repair: £0-80
- Bermuda Repair: £0-120
- Eco Compact Repair: £0-120
- Eco Elite Repair: £0-120
- EcoBlue Repair: £0-120
- EcoBlue Advance Repair: £0-120
- EcoBlue Advance Heat Repair: £0-120
- EcoBlue Heat Repair: £0-120
- EP Repair: £0-120
- Netaheat Repair: £0-120
- Performa Repair: £0-180
- Profile Repair: £180-350
- Profile Prima Repair: £100-350
- Statesman Repair: £0-120
- Suprima 100 Repair: £180-350
- Suprima 115 Repair: £180-350
- Suprima 30 Repair: £100-£350
- Suprima 40 Repair: £180-450
- Suprima 50 Repair: £0-120
- Suprima 60 Repair: £180-450
- Suprima 70 Repair: £180-450
- Suprima 80 Repair: £180-350
- Titanium Repair: £0-120
Source
Baxi 153 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