What does the Vaillant ecoTEC plus F72 fault code mean?
The F72 fault code on the Vaillant ecoTEC plus indicates a faulty system alert, typically related to issues with the boiler’s internal components or sensors. This code suggests that the boiler has detected a malfunction that requires attention to ensure safe and efficient operation.
Common Causes
- Faulty Temperature Sensor: The temperature sensor may be malfunctioning, leading to incorrect readings and triggering the fault code.
- Electrical Connection Issues: Loose or damaged electrical connections within the boiler can cause communication failures between components, resulting in the F72 error.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it may involve complex electrical or gas components that require professional expertise. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F72 fault could be around £150 to £250, depending on whether the temperature sensor needs replacement or if electrical connections require repair. This estimate includes parts and labour costs.