LED 3 (CH) Medium

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.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description: Roomstat (72) or clock (62) not calling for heat
Typical repair cost £0-£120 (including labour)

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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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 7 July 2026