Navien NR-35D User Manual page 36

4. Select the Room Controller.
Searched only one Room Controller,
it would be automatically connected.
There will not be shown below screen.
If more than 2 room controllers are found,
please check the ID number of required
room controller on the screen, then select
from APP.
36
No room controller found, please check
AP mode of required room controller is
on, then try again.