What does the Baxi Platinum F58 fault code mean?
The F58 fault code on a Baxi Platinum boiler indicates a low limit thermostat fault, which means the boiler is unable to detect the correct temperature of the water in the system. This can lead to inefficient heating and potential safety issues if not addressed promptly.
Common Causes
- Faulty Low Limit Thermostat: The thermostat may be malfunctioning or damaged, preventing it from accurately reading the water temperature.
- Wiring Issues: Damaged or loose wiring connections to the thermostat can disrupt communication between the thermostat 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 fixing a low limit thermostat fault on a Baxi Platinum boiler is around £150 to £250. This includes the cost of parts and labour, as the thermostat replacement typically requires professional expertise.