LED 8 yellow (0) High

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.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: CH limit thermostat (50) open circuit (pump will run) or DHW limit thermostat (52) open circuit
Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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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