How to fix Ideal Logic Plus fault code F54

What does the Ideal Logic Plus F54 fault code mean?

The F54 fault code on the Ideal Logic Plus indicates a malfunction with the hot water sensor, which is responsible for monitoring the temperature of the water. This issue can prevent the boiler from providing hot water effectively.

Common Causes

  • Faulty Hot Water Sensor: The sensor may be damaged or malfunctioning, leading to incorrect temperature readings.
  • Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt its functionality, causing the fault code to appear.

Can I fix it myself? (DIY)

It is advisable to call a Gas Safe Engineer to diagnose and repair the issue, as dealing with gas appliances can be dangerous. Attempting to fix electrical or gas-related problems without proper training can pose serious risks.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for replacing a faulty hot water sensor on an Ideal Logic Plus boiler is approximately £150 to £200. This includes the cost of the part and labour, reflecting the typical pricing for such repairs in the UK.