What does the Ideal Logic Plus F36 fault code mean?
The F36 fault code on the Ideal Logic Plus indicates a problem with the thermistor, which is responsible for measuring the temperature of the water in the heating system. A faulty thermistor can lead to incorrect temperature readings, affecting the boiler’s performance and efficiency.
Common Causes
- Faulty Thermistor: The thermistor itself may be defective or damaged, leading to inaccurate readings.
- Wiring Issues: Damaged or loose wiring connections to the thermistor can cause communication failures between the thermistor 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 the issue, as working with gas appliances can be dangerous. Attempting to fix electrical components without proper training may lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty thermistor in an Ideal Logic Plus boiler is around £120 to £150. This includes the cost of the part and labour, as thermistor replacements typically require professional installation to ensure safety and compliance with regulations.