NRT405F901 manual
Chapter 14
Display handling
28
Chapter 14 Display handling
The display is handled using the buttons on the controller: See chapter 10 for more
information.
Display indications
Figure 8. Indications in the display
The parameter menu
When the controller is in Comfort or Window mode, different parameter settings may be
adjusted in a parameter menu. This menu appears if the INCREASE and DECREASE
buttons are pressed simultaneously for approx. 5 seconds until the Service indication appears
in the display. Thereafter, the INCREASE button should be pressed twice.
Initially, only a parameter number (P01, P02, P03 etc.) is shown in the parameter menu. By
pressing the INCREASE and DECREASE buttons, the parameters can be cycled through.
When the correct parameter is selected, the On/Off button is pressed after which the
parameter’s value is shown and the parameter number disappears. The parameters value may
now be changed using the INCREASE and DECREASE buttons. By depressing the
INCREASE or DECREASE button, the value shown in the display is initially only changed
slowly. The changing speed thereafter increases in steps of approx. 3-4 steps with 2-3
seconds in between.
Confirm/Undo
To confirm changing the parameter, the On/Off button is pressed once more. The display
will then return to showing the parameter number. Before the change is confirmed, the
original value (i.e. the value from before the change took place) can be returned by pressing
the INCREASE and DECREASE buttons simultaneously. The original value will then return
in the display.
Room temperature
Auto/Man. indication for the fan
Occupancy indication
Open window
Fan
Setpoint
Adjustable value
COOL/HEAT: Shows whether the unit controls
according to the heating or cooling setpoint
SERVICE: Setting parameters
Current fan speed
(Low, Medium, High)
Current room temperature or
setpoint in °C to one decimal point
Off mode (only
temperature is
shown)
STANDBY: Economy mode
indication
