What does the Viessmann Vitodens 050-W E287 fault code mean?
The E287 fault code on the Viessmann Vitodens 050-W indicates a problem with the system thermostat, which is responsible for regulating the temperature of the heating system. This fault can prevent the boiler from operating efficiently or cause it to shut down entirely.
Common Causes
- Faulty Thermostat: The thermostat may be malfunctioning or damaged, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections between the thermostat and the boiler can disrupt communication and cause the fault code to appear.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that require professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E287 fault code is around £150 to £250, which includes the replacement of the thermostat and any necessary wiring repairs. This cost reflects the complexity of the work and the need for a qualified technician.