Brand hub
Baxi Fault Codes
Use this Baxi boiler hub to check fault meanings, user-safe steps, and when a qualified engineer is needed. Use this hub to move into the right appliance section, then open the exact code page for the documented meaning, evidence limits and safe next steps.
Definitions can vary by model and region. Some codes remain unconfirmed; check the complete display, exact model and the page's sources before taking action.
Appliance hubs
1
Fault code pages
20
Guides linked in
2
Appliance types
Appliance codes across brands
Selected code pages
Code categories in this library
Counts refer to published code pages, not how often an appliance develops a fault.
power and control (4)
sensor (4)
fan and flue (3)
PCB and control (2)
pressure and level (2)
circulation (1)
More code pages
E128 for Boiler
Frequent flame loss when the full code is E128
E28 for Boiler
Flue-temperature NTC circuit fault in the applicable Baxi table
117 for Boiler
High system pressure when the full display is E117
118 for Boiler
Low system pressure when the full code is E118
125 for Boiler
Circulation fault when the full code is E125
130 for Boiler
Flue thermostat trip when the full code is E130
133 for Boiler
Gas supply or ignition problem when the full code is E133
E1 for Boiler
Meaning unconfirmed; exact model evidence required
E10 for Boiler
External-probe fault in the applicable Baxi table
E110 for Boiler
Maximum-temperature or safety-thermostat trip
E131 for Boiler
Power removed following an E125 or E130 fault
E160 for Boiler
Fan fault
Related guides
Practical background guides connected to this brand's fault-code pages.
Boiler Fault Codes: When to Stop and Call a Professional
First separate an emergency from a routine fault. A code needs the exact model and full display; it cannot by itself establish a safe reset or identify a part to replace.
Why Your Boiler Keeps Losing Pressure
Use the pressure target and filling instructions for your exact boiler and installation. Repeated pressure loss needs investigation; a low reading alone does not identify a failed component.