Ferroli LED 3 (CH) Fault Code
Also written as LED3CH — same fault.
The Ferroli LED 3 (CH) fault code means: your boiler is currently waiting for a signal from your thermostat or timer to tell it that the house needs heating.. It appears on 2 Ferroli models in our database.
Technical description: Roomstat (72) or clock (62) not calling for heat
DIY fix possible
Check your room thermostat and ensure it is set to a temperature higher than the current room temperatureCheck that your timer or programmer is in the 'ON' position for heatingReplace the batteries in your wireless thermostat if you have one
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Gas Safe Register →Ferroli models that show the LED 3 (CH) fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ferroli LED 3 (CH) 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