BoilerFaultCodesYour boiler is simply indicating that it is currently busy heating up your tap water.
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: Boiler in domestic hot water mode
What causes this fault?
This is not actually a fault, but a status indicator showing that the boiler is actively working to provide hot water to your taps or shower. The code appears because the internal flow sensor has detected a demand for hot water and has prioritised this over your central heating. Once you turn off the tap, the code will disappear and the boiler will return to its normal standby or heating mode.
DIY fix possible
No action is required as this is a normal status message.The code will disappear once you turn off your hot water taps.
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A boiler cover plan would cover faults like 4 — no call-out fees, no surprises.
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Remeha Selecta is discontinued — time for a new one?
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