Low
i12 on Worcester Bosch Greenstar Heatslave II

Your boiler is simply displaying the current target temperature setting for your hot water, rather than indicating a fault.

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 temperature set point - This is the thermal store temperature set point, selected via the Hot Water control knob on the fascia, (rounded to 0.5°C units).

From this model's manual
Verified against the Worcester Bosch Greenstar Heatslave Ii 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

Recognise that this is an information message rather than an error codeRotate the hot water control dial on the front panel to return the display to normal modeNo further action is required as the boiler is functioning correctly

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