Low
B LED 5 on Ferroli Optima 201

Your boiler is currently in a temporary self-imposed waiting period and should resume normal operation automatically once the internal timer finishes.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Waiting time still operating (max. 3 minutes)

Engineer required

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

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