What does the Ideal Logic Max F30 fault code mean?
The F30 fault code on the Ideal Logic Max indicates a thermistor fault, which typically means there is an issue with the temperature sensor that monitors the water temperature. This can lead to incorrect readings and affect the boiler’s operation.
Common Causes
- Faulty Thermistor: The thermistor may be damaged or malfunctioning, leading to inaccurate temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the thermistor can cause communication failures 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 the fault, as working with gas appliances can be dangerous. Attempting to fix electrical components without proper training can also pose risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for an F30 fault due to a faulty thermistor is around £120 to £180, which includes the cost of the part and labour. This estimate is based on the typical price of a replacement thermistor and the time required for a qualified engineer to complete the repair.