High
RL2/RLX (not energised) on Ferroli Optima 201

Your boiler has detected a loose or disconnected internal electrical wire, which is preventing it from safely communicating with its internal components.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Wiring defect: check wiring on (66-67-68)

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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