LED 5: 1 (Central Heating) Low

Ferroli LED 5: 1 (Central Heating) Fault Code

Also written as LED51CENTRALHEATING — same fault.

The Ferroli LED 5: 1 (Central Heating) fault code means: your boiler is temporarily pausing between heating cycles and should restart automatically within a few minutes.. 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: Waiting time still operating (max. 3 minutes)

DIY fix possible

Wait 3 to 5 minutes for the countdown timer to finishCheck that your room thermostat is turned upEnsure there is power to the unit and no other fault lights are flashing

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Ferroli models that show the LED 5: 1 (Central Heating) fault code

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

Source

Ferroli LED 5: 1 (Central Heating) 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