Low
d on Pro ProCombi Exclusive 24

Your boiler is currently working correctly and is simply letting you know that it is providing hot water to your taps.

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

DHW being supplied.

From this model's manual
Verified against the Pro Procombi Exclusive 24 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

No action is required; this is a normal status message.The code will disappear once you turn off the hot water tap.

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Avoid the next call-out bill

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