4
FAULT CODE
Halstead
Flame Loss During Operation
High Severity
Engineer Required
The boiler had a stable flame but lost it during operation. May indicate gas supply interruption or wind effects.
Step-by-Step Fix Guide
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Step 1
Check gas supply is stable
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Step 2
Check the flue terminal for wind exposure
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Step 3 Engineer only
A Gas Safe engineer should check 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.