Low
PH on Ideal Instinct2 24

Your boiler is notifying you that the function which keeps hot water ready for instant use is currently active.

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

Domestic hot water preheat

From this model's manual
Verified against the Ideal Instinct2 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 message, not a fault.If you wish to turn this feature off, refer to the user manual to disable 'Preheat' mode.

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