Low
d10 on Alpha E-Tec S

Your boiler is currently displaying its stored history of past technical issues rather than an active fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

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.

What the manual says

Manufacturer manual

Fault history reset - when in this menu, press and hold the Summer/Winter button to clear the fault code history

Shared across the Alpha E-Tec range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate the Summer/Winter button on the boiler control panel.Press and hold the button for several seconds.Observe the display to confirm the error code has cleared and the boiler returns to normal operation.

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All 47 fault codes on the E-Tec S

Seeing a different code? Every code this model can display, in one place.

010203040506081012151620232425293137384345475160617576d1d2d4d5d6d7d8d9d12d14d15d16d17d18d19d22E03E12E38

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