Low
t on Pro ProCombi Exclusive 24

Your boiler is currently heating up a small internal reservoir of water so that hot water is available instantly when you turn on the tap.

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

DHW preheat.

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 as this is a normal operating mode.If you wish to save energy, you can turn off the comfort/preheat function using the control dial.Check your user manual if you want to schedule the preheat times.

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