Daikin · Altherma 3 H HT W
The status indicator LED is blinking red, signaling that the unit has encountered an error. You can view a short and a long description of the error on the unit's display.
Click steps to track your progress.
Press the left dial to open the main menu.
Navigate to the 'Error' option and select it.
Press the dial again on the error screen to see a detailed description.