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Baxi Boiler Fault Codes
Browse the available Baxi boiler fault codes in one place, then open the exact code page for the likely meaning, safe first steps, and when to stop troubleshooting.
Browse the parent brand page: Baxi
All fault codes in this cluster
18 code pages currently available for this brand and appliance cluster.
| Code | Meaning | Severity |
|---|---|---|
| 110 | The boiler has overheated or hit a high temperature limit | high |
| 117 | System water pressure is too low | medium |
| 118 | System water pressure is too low | medium |
| 125 | Water circulation or pump performance issue | high |
| 128 | Flame detection has been lost during operation | high |
| 130 | Fan, flue, or air pressure sensing problem | high |
| 133 | The boiler has failed to ignite properly | high |
| E1 | A boiler sensor is giving an invalid reading | medium |
| E10 | A boiler sensor is giving an invalid reading | medium |
| E20 | A boiler sensor is giving an invalid reading | medium |
| E28 | Condensate, drainage, or pump protection issue | medium |
| E50 | Control board or internal communication fault | high |
| E53 | A boiler sensor is giving an invalid reading | medium |
| E55 | Control board or internal communication fault | high |
| E78 | Control board or internal communication fault | high |
| E96 | Control board or internal communication fault | high |
| E97 | Control board or internal communication fault | high |
| E98 | Control board or internal communication fault | high |
Featured fault codes
110 meaning and fix
The boiler has overheated or hit a high temperature limit
117 meaning and fix
System water pressure is too low
118 meaning and fix
System water pressure is too low
125 meaning and fix
Water circulation or pump performance issue
128 meaning and fix
Flame detection has been lost during operation
130 meaning and fix
Fan, flue, or air pressure sensing problem
133 meaning and fix
The boiler has failed to ignite properly
E1 meaning and fix
A boiler sensor is giving an invalid reading
E10 meaning and fix
A boiler sensor is giving an invalid reading
E20 meaning and fix
A boiler sensor is giving an invalid reading
E28 meaning and fix
Condensate, drainage, or pump protection issue
E50 meaning and fix
Control board or internal communication fault