What does the Vaillant ecoTEC pro F72 fault code mean?
The F72 fault code on the Vaillant ecoTEC pro indicates a problem with the system monitoring, which may affect the boiler’s ability to operate efficiently. This fault typically points to issues with the temperature sensors or the control board.
Common Causes
- Faulty Temperature Sensor: A malfunctioning temperature sensor can lead to incorrect readings, triggering the F72 fault code.
- Control Board Failure: Issues with the control board can disrupt communication between components, resulting in system monitoring errors.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and potential gas safety risks. Attempting DIY repairs could lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F72 fault code is around £200 to £300. This includes the replacement of a faulty temperature sensor or control board, which are common components that may need servicing.