LED 6 (A) High

Ferroli LED 6 (A) Fault Code

Also written as LED6A — same fault.

The Ferroli LED 6 (A) fault code means: your boiler has stopped working because it is unable to accurately detect the water pressure or temperature, preventing it from safely heating your home or water.. It appears on 1 Ferroli model 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: Short circuit on D.H.W. sensor (42) or resistance lower than 500 Ohm; C.H. limit thermostat (50) open circuit (pump run); C.H. water pressure low (114 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 6 (A) fault code

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

Source

Ferroli LED 6 (A) 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