BoilerFaultCodesYour boiler is working normally and is simply indicating that a hot water tap is currently turned on somewhere in your home.
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: DHW request
What causes this fault?
This status occurs when the boiler detects water flowing through the domestic hot water pipework. A flow switch inside the unit senses the movement of water and signals the burner to ignite in order to heat the water for your shower or taps. It is a sign of normal operation rather than a mechanical failure.
DIY fix possible
Check that all hot water taps are fully closedEnsure there are no leaking hot water taps or dripping showersMonitor the lights; the red light should remain off and the green light will stay on while water is running
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 | Red LED: Off — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Vokera Aquanova is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
Affiliate links — we may earn a commission at no extra cost to you.