D.41 Low
Your boiler is displaying the current temperature of the water returning from your radiators rather than indicating a specific fault.
Technical description: Return temperature actual value
Typical repair cost: £0 (including labour)
DIY fix possible
No action required as this is an informative status code, not an error.Press the 'i' or 'back' button to clear the status from the display.Monitor the boiler to ensure it continues to provide heating and hot water as normal.
Protect yourself from future repair bills
A boiler cover plan would cover faults like D.41 — no call-out fees, no surprises.
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