What does the Baxi Duo-tec F67 fault code mean?
The F67 fault code on a Baxi Duo-tec boiler indicates a problem with the domestic hot water (DHW) pressure relief valve. This issue can lead to insufficient hot water supply or potential leaks if not addressed promptly.
Common Causes
- Blocked Pressure Relief Valve: Debris or mineral build-up can obstruct the valve, preventing it from functioning correctly.
- Faulty Pressure Sensor: A malfunctioning sensor may incorrectly signal a fault, leading to the F67 code being displayed.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix the pressure relief valve without proper training may lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F67 fault is around £150 to £250. This includes the cost of a new pressure relief valve and labour, as it typically requires a qualified engineer to ensure safety and compliance with regulations.