Home/Boiler Fault Codes/Baxi E01
BAXI FAULT CODE
Baxi E01
A flame-sensor fault, which can stem from an air supply issue, a faulty gas valve, no gas at the appliance, a contaminated flame sensor, or a loose flue connection.
WHAT E01 TYPICALLY INDICATES
A flame-sensor fault, which can stem from an air supply issue, a faulty gas valve, no gas at the appliance, a contaminated flame sensor, or a loose flue connection.
WHAT TO DO
This is not a DIY fix — it requires a Gas Safe registered engineer to diagnose and repair safely.
A NOTE ON GAS SAFE REGISTRATION
Any work on the gas side of a boiler in the UK legally requires a Gas Safe registered engineer, it isn't optional. Our engineers are fully Gas Safe registered, and you're always welcome to ask to see ID on the day. This page is general information about what a fault code typically indicates; it is not a substitute for an engineer diagnosing your specific boiler.
Seeing Baxi E01 on your boiler?
Tell us the code and your postcode. A fully Gas Safe registered engineer will diagnose the actual cause before quoting a fix.
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