3 RED FLASHES
FAULT CODE
Baxi
Ignition Failure — 5 Attempts (EcoBlue/MainEco)
Medium Severity
DIY Check Possible
On Baxi EcoBlue and MainEco boilers, 3 red flashes means the boiler has failed to ignite after 5 attempts.
Cold Weather Note
In winter, 3 red flashes is often a frozen condensate pipe.
Step-by-Step Fix Guide
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Step 1
Check gas supply
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Step 2
Check condensate pipe in cold weather
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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.