E20
FAULT CODE
Alpha
Flame Failure / No Flame Detected
Medium Severity
Engineer Required
The boiler cannot detect a flame. The burner has failed to light or the ionisation electrode is not detecting the flame correctly.
Step-by-Step Fix Guide
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Step 1
Check gas supply first
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Step 2
Reset once
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Step 3 Engineer only
A Gas Safe engineer will need to test the ionisation electrode and gas valve
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.