D.060 Medium

Vaillant D.060 Fault Code

Also written as D060 — same fault.

The Vaillant D.060 fault code means: your boiler has detected that it has been running too hot multiple times and is recording these instances to help a heating engineer diagnose a persistent circulation or heat exchange issue.. It appears on 7 Vaillant models in our database.

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.

Technical description: Numberofoverheatingfaults
Typical repair cost £150-350 (including labour)

Engineer required

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

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Vaillant models that show the D.060 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Vaillant D.060 fault code information on this page is sourced and cross-checked against the official Vaillant service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026