What does the Ideal Logic Plus F46 fault code mean?
The F46 fault code on the Ideal Logic Plus indicates a problem with the expansion vessel, which is responsible for maintaining the correct pressure within the heating system. A faulty expansion vessel can lead to pressure fluctuations and potential system failures.
Common Causes
- Loss of Air Pressure: The air pressure inside the expansion vessel may have dropped, causing it to function improperly.
- Physical Damage: The expansion vessel may have developed a leak or other physical damage, rendering it ineffective.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working with the boiler’s pressure system can be dangerous and requires professional expertise.
Estimated Repair Cost (2026 UK Prices)
The estimated cost for replacing a faulty expansion vessel in an Ideal Logic Plus boiler is around £150 to £250. This includes the cost of the part and labour, reflecting the complexity of the repair and the need for a qualified technician.