What does the Baxi Platinum F76 fault code mean?
The F76 fault code on a Baxi Platinum boiler indicates a problem with the domestic hot water (DHW) flow temperature. This typically suggests that the boiler is unable to achieve or maintain the required temperature for hot water delivery.
Common Causes
- Faulty DHW Sensor: A malfunctioning sensor may not accurately detect the water temperature, leading to incorrect readings and triggering the fault code.
- Blocked Heat Exchanger: A blockage in the heat exchanger can restrict water flow, preventing the boiler from heating the water effectively.
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. Attempting DIY repairs could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F76 fault could range around £150 to £250, primarily depending on whether the DHW sensor needs replacement or if the heat exchanger requires cleaning or servicing.