E.04-.10
FAULT CODE
Baxi
Failure to Light (200/400)
Medium Severity
DIY Check Possible
On Baxi 200/400 boilers, E.04-.10 indicates the boiler has failed to ignite — possibly a gas supply issue.
Cold Weather Note
Check condensate pipe in cold weather first.
Step-by-Step Fix Guide
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Step 1
Check gas supply — try other gas appliances
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Step 2
In cold weather, check for frozen condensate pipe
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Step 3
Reset once
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Step 4
Call a Gas Safe engineer if fault persists
Gas Safe Reminder
Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.