What does the Ideal Mexico HE F58 fault code mean?
The F58 fault code on the Ideal Mexico HE indicates a problem with the central heating (CH) diverter valve. This fault typically arises when the diverter valve fails to operate correctly, affecting the flow of hot water to either the heating system or the hot water supply.
Common Causes
- Faulty Diverter Valve: The diverter valve may be stuck or malfunctioning, preventing it from directing water flow properly.
- Electrical Issue: There could be an electrical fault, such as a damaged wiring connection or a failed actuator, affecting the valve’s operation.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working on gas appliances can be dangerous. Attempting to fix electrical or gas-related problems without proper training can lead to serious safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F58 fault on an Ideal Mexico HE is around £200 to £300. This includes the cost of a new diverter valve and labour, as replacement parts for this model can be relatively expensive and require professional installation.