What does the Ideal Mini F74 fault code mean?
The F74 fault code on the Ideal Mini boiler indicates a central heating system inlet fault, which typically means there is an issue with the water supply to the heating system. This can prevent the boiler from operating correctly, leading to heating failures.
Common Causes
- Low Water Pressure: Insufficient water pressure in the system can trigger the F74 fault, preventing proper circulation.
- Blocked Inlet Filter: A blockage in the inlet filter can restrict water flow, causing the boiler to detect an inlet fault.
Can I fix it myself? (DIY)
If you are comfortable, you can check the pressure gauge on your boiler and top up the system if the pressure is low. However, if the issue persists or involves gas or electrical components, it is crucial to call a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing an F74 fault could range from £100 to £200, primarily depending on whether the issue is low pressure or requires cleaning/replacing the inlet filter. This cost reflects the typical service fees for a qualified engineer in the UK.