What does the Viessmann Vitodens 050-W E327 fault code mean?
The E327 fault code indicates a problem with the system gas pressure regulator, which is responsible for maintaining the correct gas pressure for the boiler’s operation. This fault can prevent the boiler from functioning properly and may lead to heating and hot water issues.
Common Causes
- Faulty Gas Pressure Regulator: The regulator may be malfunctioning or damaged, leading to incorrect gas pressure levels.
- Gas Supply Issues: Problems with the gas supply, such as blockages or low pressure from the gas mains, can affect the regulator’s performance.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for any issues related to gas pressure and the gas supply system. Attempting to fix these issues without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty gas pressure regulator on a Viessmann Vitodens 050-W is approximately £250 to £350. This includes parts and labour, as the regulator itself can cost around £100 to £150, with the remainder covering the engineer’s time.