What does the Ideal Logic Max F55 fault code mean?
The F55 fault code on the Ideal Logic Max indicates that the domestic hot water (DHW) temperature sensor is stuck, meaning it is not providing accurate temperature readings to the boiler’s control system. This can lead to issues with hot water delivery and overall boiler performance.
Common Causes
- Faulty DHW Temperature Sensor: The sensor may be malfunctioning or damaged, causing it to fail in detecting the correct temperature.
- Wiring Issues: Damaged or loose wiring connections to the temperature sensor can disrupt the signal being sent to the boiler.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and safety risks. Attempting to fix it yourself could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW temperature sensor on an Ideal Logic Max is around £120-£150, including parts and labour. This cost reflects the price of the sensor and the expertise required for safe installation.