What does the Baxi Platinum F98 fault code mean?
The F98 fault code on a Baxi Platinum boiler indicates a problem with the domestic hot water (DHW) pump sensor. This fault typically suggests that the sensor is either malfunctioning or not receiving the correct signals, which can affect the boiler’s ability to heat water properly.
Common Causes
- Faulty DHW Pump Sensor: The sensor may be defective or damaged, leading to incorrect readings.
- Wiring Issues: Damaged or loose wiring connections can disrupt communication between the sensor and the boiler’s control board.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves electrical components and safety risks associated with gas appliances.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty DHW pump sensor on a Baxi Platinum boiler is around £150 to £200. This includes the cost of the replacement part and labour, as sensor replacement typically requires professional expertise.