What does the Vaillant ecoTEC pro F58 fault code mean?
The F58 fault code on a Vaillant ecoTEC pro boiler indicates that the service interval has been exceeded. This means that the boiler requires servicing to ensure it operates safely and efficiently.
Common Causes
- Exceeded Service Interval: The boiler has not been serviced within the recommended time frame, which can lead to performance issues.
- Incorrect Reset Procedure: The fault may also occur if the reset procedure was not followed correctly after a previous service warning.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to address this issue, as it involves servicing the boiler, which requires professional expertise and safety precautions.
Estimated Repair Cost (2026 UK Prices)
The estimated cost for a service on a Vaillant ecoTEC pro boiler is around £100 to £150. This cost reflects the need for a qualified engineer to perform a thorough inspection and maintenance of the boiler.