BoilerFaultCodesWhat the manual says
Manufacturer manual‘RUNNING’
From this model's manual
Verified against the Glow Worm/Glow Worm Swift Flow 100 installation & service manual.
What causes this fault?
This is not a fault; the green light indicates that the boiler's internal controls have successfully received a signal to operate. It physically confirms that the burner is lit and the system is currently delivering heat to your radiators or hot water to your taps. If this light is on, the boiler is performing its job exactly as intended.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
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All 10 fault codes on the Swiftflow 100
Seeing a different code? Every code this model can display, in one place.