How to fix Baxi Platinum fault code F82

What does the Baxi Platinum F82 fault code mean?

The F82 fault code on a Baxi Platinum boiler indicates that the domestic hot water (DHW) flow temperature is excessively high. This can lead to potential safety issues and requires immediate attention to prevent damage to the system.

Common Causes

  • Faulty Temperature Sensor: A malfunctioning temperature sensor may incorrectly read the water temperature, causing the boiler to overheat.
  • Blocked Heat Exchanger: A blockage in the heat exchanger can restrict water flow, leading to overheating and triggering the fault code.

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 can be dangerous if handled improperly. Attempting DIY repairs could void your warranty or lead to further complications.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the F82 fault could range from £150 to £300, depending on whether the temperature sensor needs replacing or if the heat exchanger requires cleaning or replacement.