What does the Baxi Platinum F37 fault code mean?
The F37 fault code on a Baxi Platinum boiler indicates a fault with the central heating (CH) sensor. This typically means that the sensor is either malfunctioning or not providing accurate temperature readings to the boiler’s control system.
Common Causes
- Faulty CH Sensor: The sensor may be damaged or defective, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt communication between the sensor and the boiler.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that can be hazardous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty CH sensor on a Baxi Platinum boiler is approximately £150 to £200, which includes the cost of the part and labour for a qualified engineer to replace it.