What does the Ideal Mini F87 fault code mean?
The F87 fault code on the Ideal Mini indicates a problem with the domestic hot water (DHW) system flow. This typically suggests that the boiler is not detecting sufficient water flow, which can affect hot water delivery.
Common Causes
- Blocked DHW Flow Sensor: A blockage in the flow sensor can prevent accurate readings, leading to the F87 fault code.
- Low Water Pressure: Insufficient water pressure in the system can cause flow issues, triggering the fault code.
Can I fix it myself? (DIY)
It is advisable to check the water pressure and ensure it is within the recommended range (typically between 1-1.5 bar). If the pressure is low, you can top it up using the filling loop. However, for any gas or electrical issues, it is essential to call a Gas Safe Engineer.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F87 fault could be around £150 to £250, depending on whether the flow sensor needs cleaning or replacement. This cost reflects the typical labour and parts required for such repairs.