What does the Baxi Platinum F93 fault code mean?
The F93 fault code on a Baxi Platinum boiler indicates a fault with the central heating (CH) pressure sensor. This typically means that the sensor is either malfunctioning or not detecting the correct pressure within the system.
Common Causes
- Faulty Pressure Sensor: The pressure sensor may be defective or damaged, leading to incorrect readings.
- Low Water Pressure: Insufficient water pressure in the system can trigger this fault, as the sensor cannot detect the required pressure levels.
Can I fix it myself? (DIY)
It is recommended to check the water pressure gauge on your boiler; if the pressure is below 1 bar, you can safely re-pressurise the system using the filling loop. However, if the issue persists or if you suspect a faulty sensor, it is best to call a Gas Safe Engineer for proper diagnosis and repair.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty pressure sensor on a Baxi Platinum boiler is around £150 to £200. This includes the cost of the part and labour, reflecting the typical pricing for boiler repairs in the UK.