What does the Ideal Mexico HE F100 fault code mean?
The F100 fault code on the Ideal Mexico HE indicates an unknown fault related to the central heating (CH) system. This may suggest issues with components such as the pump, thermostat, or other internal mechanisms.
Common Causes
- Faulty Pump: A malfunctioning pump may prevent proper circulation of water, leading to heating issues.
- Thermostat Issues: A faulty thermostat can cause incorrect temperature readings, affecting the boiler’s operation.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any gas or electrical issues. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F100 fault could range from £150 to £300, depending on whether the pump or thermostat needs replacement. This estimate includes parts and labour for a qualified engineer.