What does the Baxi Platinum F36 fault code mean?
The F36 fault code on a Baxi Platinum boiler indicates a fault with the domestic hot water (DHW) sensor. This issue can prevent the boiler from heating water effectively, leading to inadequate hot water supply.
Common Causes
- DHW Sensor Failure: The sensor may be malfunctioning or damaged, causing incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the DHW sensor can disrupt communication between the sensor and the boiler control board.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and gas safety regulations. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F36 fault code is around £150 to £250, primarily for replacing the DHW sensor and any necessary wiring repairs. This cost reflects the complexity of the repair and the need for a qualified technician.