BoilerFaultCodesYour boiler is working normally and is currently either providing heat or ready to do so.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Appliance is ok
What causes this fault?
This status indicates that the boiler is operating exactly as intended and is currently in a heating or standby cycle. There is no actual fault; the lights are simply signaling that the internal components, like the pump and burner, are healthy and active. If you have no heat despite this light, the issue likely lies with your external thermostat or programmer settings rather than the boiler itself.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like Green LED On/flashing, Red LED Off — no call-out fees, no surprises.
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