What does the Ideal Mexico HE F36 fault code mean?
The F36 fault code on the Ideal Mexico HE indicates a fault with the domestic hot water (DHW) sensor. This typically means that the sensor is either malfunctioning or has failed, preventing the boiler from properly regulating the hot water temperature.
Common Causes
- DHW Sensor Failure: The sensor may be defective or damaged, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the DHW sensor can disrupt its function and cause the fault code to appear.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that can be hazardous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing the DHW sensor on an Ideal Mexico HE is approximately £150-£200. This includes the cost of the part and labour, as sensor replacement typically requires professional expertise.