What does the Ideal Mini F38 fault code mean?
The F38 fault code on the Ideal Mini indicates a fault with the domestic hot water (DHW) sensor, which may prevent the boiler from heating water effectively. This issue can lead to inconsistent hot water supply or no hot water at all.
Common Causes
- Faulty DHW Sensor: The sensor may be malfunctioning or damaged, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the DHW sensor can disrupt its functionality and trigger the fault code.
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 can also lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty DHW sensor on an Ideal Mini is around £150 to £200. This includes the cost of the part and labour, as sensor replacements typically require professional installation.