Medium
d0 on Alpha E-Tec NXS

Your boiler is displaying a code that does not correspond to a recognised error, which often indicates a temporary software glitch or a communication issue between the system components.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Not used

From this model's manual
Verified against the Alpha E Tec Nxs installation & service manual, page 33.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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