How much does it cost to fix Viessmann error code 60:10?

Typical repair cost for the Viessmann 60:10 fault is £120-280 including labour.

60:10 Medium

Viessmann 60:10 Fault Code

Q: What does the Viessmann 60:10 fault code mean?

Your boiler is getting much hotter than expected while trying to heat your water, which usually suggests the heat isn't transferring properly or a sensor is misreading.

Also written as 6010 — same fault.

The Viessmann 60:10 fault code means: your boiler is getting much hotter than expected while trying to heat your water, which usually suggests the heat isn't transferring properly or a sensor is misreading.. It appears on 5 Viessmann models in our database.

Technical description: During DHW loading, the boiler water temperature is up to 20K higher than the set DHW temperature

What causes the Viessmann 60:10 fault?

This fault happens because the water inside the boiler is getting significantly hotter than the target temperature for your hot water tank. It is usually caused by a blockage or a mechanical failure that prevents the heat from flowing smoothly out of the boiler and into your cylinder. The most common culprits are a buildup of limescale in the heat exchanger or a diverter valve that is stuck and restricting the water flow.

Typical repair cost £120-280 (including labour)

Engineer required

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

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Viessmann models that show the 60:10 fault code

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

Source

Viessmann 60:10 fault code information on this page is sourced and cross-checked against the official Viessmann service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026