BoilerFaultCodesVokera 61 Fault Code
The Vokera 61 fault code means: your boiler's internal temperature sensors are struggling to read the water temperature correctly, preventing the system from heating up properly.. It appears on 3 Vokera models in our database.
Technical description: Sensor fault
What causes the Vokera 61 fault?
This fault occurs when the boiler's internal thermometers, known as NTC sensors, stop communicating accurate temperature data to the main control board. The most common reason is that the sensors have physically degraded over time or have become coated in internal system debris, meaning they can no longer tell the boiler if the water is hot or cold. As a safety precaution, the boiler stops firing because it cannot be sure it won't overheat.
This fault can be more noticeable in winter when the boiler is under high demand and internal components are expanding and contracting more frequently due to the heat.
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 →Vokera models that show the 61 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera 61 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026