What does the Ideal Mini F30 fault code mean?
The F30 fault code on the Ideal Mini indicates a thermistor fault, which typically means that the temperature sensor is malfunctioning or has failed. This can lead to incorrect temperature readings, affecting the boiler’s performance and efficiency.
Common Causes
- Faulty Thermistor: The thermistor may be damaged or have an open circuit, preventing it from accurately measuring temperature.
- Wiring Issues: Damaged or loose wiring connections to the thermistor can cause communication failures between the sensor and the boiler control board.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix electrical components without proper training can also pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a thermistor on an Ideal Mini is around £120, which includes the part and labour. This is based on the typical cost of the thermistor and the time required for a qualified engineer to complete the repair.