What does the Baxi Platinum F46 fault code mean?
The F46 fault code on a Baxi Platinum boiler indicates a fault with the domestic hot water (DHW) pump. This issue can prevent the boiler from effectively circulating hot water, leading to inadequate hot water supply.
Common Causes
- Blocked DHW Pump: Debris or limescale buildup can obstruct the pump, preventing it from functioning properly.
- Electrical Fault: Issues with the wiring or connections to the pump can lead to a failure in operation.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer for this issue, as it involves electrical components and potential safety risks. Attempting to fix it yourself could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a DHW pump replacement on a Baxi Platinum boiler is around £250 to £350. This includes parts and labour, reflecting the complexity of the repair and the need for a qualified engineer.