What does the Viessmann Vitodens 050-W E325 fault code mean?
The E325 fault code indicates a problem with the burner control system of the Viessmann Vitodens 050-W boiler. This typically means that the boiler is unable to ignite or maintain combustion due to a fault in the control circuitry.
Common Causes
- Faulty Burner Control Unit: The control unit may be malfunctioning, preventing proper communication between the components necessary for ignition.
- Electrical Issues: Problems such as loose connections, damaged wiring, or issues with the power supply can disrupt the operation of the burner control system.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any issues related to gas or electrical components. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the E325 fault could range from £200 to £400, depending on whether the burner control unit needs replacement or if it’s just a wiring issue that requires fixing. The cost reflects the complexity of the repair and the need for a qualified technician.