What does the Ideal Mini F100 fault code mean?
The F100 fault code on the Ideal Mini indicates a pressure differential fault within the central heating system. This typically means there is an issue with the pressure levels, which can affect the boiler’s ability to operate efficiently.
Common Causes
- Low Water Pressure: Insufficient water pressure in the system can trigger the F100 fault code, often due to leaks or insufficient filling.
- Blocked Pipes or Valves: Obstructions in the heating system can create a pressure differential, leading to the fault code being displayed.
Can I fix it myself? (DIY)
If you are comfortable, you can check the pressure gauge on the boiler and top up the system pressure if it is low. However, if the issue persists or if you suspect a blockage, it is essential to call a Gas Safe Engineer to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F100 fault could range from £100 to £250, depending on whether it involves simply repressurising the system or requires more extensive repairs like clearing blockages or replacing components.