Low
LED 5 (CH) on Ferroli Arena

Your boiler is currently in a temporary self-imposed waiting period as part of its normal safety cycle and should restart automatically on its own shortly.

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.

What the manual says

Manufacturer manual

Waiting time still operating (max. 3 minutes).

From this model's manual
Verified against the Ferroli Boiler Optima 601 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Wait for 3 to 5 minutes for the countdown to finishCheck that the room thermostat or programmer is calling for heatEnsure the boiler pressure is between 1 and 1.5 bar

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