LED 5 (Permanent) Low

Ferroli LED 5 (Permanent) Fault Code

Also written as LED5PERMANENT — same fault.

The Ferroli LED 5 (Permanent) fault code means: your boiler is receiving power and is currently in standby mode or operating normally, but it is not currently calling for heat or hot water.. It appears on 2 Ferroli models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Electric power supply ON

DIY fix possible

Check if the room thermostat is turned up high enough to trigger the heatingEnsure any external timers or programmers are set to 'ON'Check if the boiler mode is set to 'Winter' (Heating + Hot Water) rather than just 'Summer' (Hot Water only)

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Ferroli models that show the LED 5 (Permanent) fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ferroli LED 5 (Permanent) fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026