E11
FAULT CODE
Biasi
False Flame Signal
High Severity
Engineer Required
The boiler is detecting a flame when the gas valve is closed. This is a serious safety fault.
Step-by-Step Fix Guide
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Step 1
Turn the boiler off immediately
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Step 2
Do not attempt to reset
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Step 3 Engineer only
Call a Gas Safe engineer immediately
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.