What does the Viessmann Vitodens 111-W F60 fault code mean?
The F60 fault code on the Viessmann Vitodens 111-W indicates a problem with the domestic hot water (DHW) thermostat. This issue can prevent the boiler from heating water to the desired temperature, affecting hot water availability.
Common Causes
- Faulty Thermostat: The DHW thermostat may be malfunctioning or damaged, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the thermostat can disrupt communication between the thermostat and the boiler.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that require professional handling for safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW thermostat on a Viessmann Vitodens 111-W is around £150 to £200. This includes parts and labour, as the thermostat itself typically costs between £50 and £100, with the remainder covering the engineer’s time.