What does the Ideal Mexico HE F57 fault code mean?
The F57 fault code on the Ideal Mexico HE indicates a problem with the domestic hot water (DHW) diverter valve. This issue typically prevents the boiler from properly directing hot water to the taps or shower, affecting hot water availability.
Common Causes
- Diverter Valve Failure: The diverter valve may be stuck or malfunctioning, preventing it from switching between heating and hot water modes.
- Electrical Fault: There could be an issue with the wiring or connections to the diverter valve, leading to improper operation.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous if handled improperly. Attempting to fix it yourself may void warranties or lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F57 fault code is around £150 to £250, primarily due to the need for a new diverter valve and labour costs associated with a qualified engineer’s service.