Low
So on Daikin EKOMB 22 Combi

Your boiler is currently set to summer mode, which means your hot water will work as normal but your central heating has been turned off.

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

Summer mode to be activated by button

From this model's manual
Verified against the Daikin Ekomb 22 Combi 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

Locate the button with the sun/snowflake or radiator icon on the control panel.Press the button once to switch from Summer (sun) mode to Winter (snowflake/radiator) mode.Check that the display now shows the heating icon and your radiators begin to warm up.

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