BoilerFaultCodesViessmann 60 Fault Code
The Viessmann 60 fault code means: your boiler has detected a fault with the sensor that monitors the water temperature returning to the unit, causing it to stop running for safety and efficiency.. It appears on 1 Viessmann model in our database.
Technical description: Control mode: Return temperature sensor shorted out
What causes the Viessmann 60 fault?
This fault occurs when the sensor responsible for measuring the temperature of the water coming back from your radiators fails. The most common reason is an internal electrical failure within the sensor itself or moisture ingress that has damaged the connection, preventing the boiler from accurately monitoring the system's heat levels. Without this data, the boiler shuts down to prevent inaccurate firing and potential damage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Viessmann models that show the 60 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Viessmann 60 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