Ferroli LED 8 yellow (0) Fault Code
Also written as LED8YELLOW0 — same fault.
The Ferroli LED 8 yellow (0) fault code means: your boiler has detected that it has become too hot and has safely shut itself down to prevent damage.. It appears on 2 Ferroli models in our database.
Technical description: CH limit thermostat (50) open circuit (pump will run) or DHW limit thermostat (52) open circuit
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Ferroli models that show the LED 8 yellow (0) fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ferroli LED 8 yellow (0) 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