E4
FAULT CODE
Baxi
Ignition Failure (Avanta)
Medium Severity
DIY Check Possible
On Baxi Avanta boilers, E4 indicates ignition failure.
Step-by-Step Fix Guide
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Step 1
Check gas supply
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Step 2
Reset once
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Step 3
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.