Before pairing the SMART+ WiFi Thermostat to the app, you need to follow the Initialization Steps from the User Manual.

After finalizing the steps of the hardware installation, you can do the pairing of the device to the app. You need to set the device into pairing mode by pressing the main knob for 5s until you can read “Pair” on the display. The device will be in pairing mode for 3 minutes. There is now further indication for the pairing mode on the Thermostat. There are two possible options to pair the WIFi Thermostat to the SMART+ app:

a) Auto scan mode

To connect the WiFi Thermostat, tap “+” button on the home screen page where you want to add the device, and then select “Add device”. Now press the button “Start automatic search” shown on the screen. The next screen will show the devices that are available in the network. You can select and add the devices shown individually by tapping the “Add” button.

Alternatively, for complete integration, you can also select the “Add all” button shown at the top of the list. In the next screen, select the WiFi router with 2.4 GHz network and enter the corresponding password with which you want to connect your devices.

If you have multiple Wi-Fi routers at your home, then you can select the WiFi from “Change WiFi network” as well. After a device is added successfully, then a message will be displayed that “The device is successfully added”.
 
b) Manual adding mode

If you cannot find the desired device with above mentioned steps, then you can also add the device manually with “Add manually” button mentioned at the bottom of the screen.

To do this, set the Thermostat to pairing mode if it has not already been set. Now select the device category tab “WiFi”. Then select the category “Others”. The WiFi Thermostat does not support the fast-flashing mode in manual mode. You can try establishing a connection in slow-flashing mode (previously known as ap mode and hereafter referred as slow-flashing mode). For slow flashing, you need to connect with the device hotspot. You are now requested to connect the smartphone to the hotspot (LDV SMART+-xxxx) provided by the Thermostat.

After tapping on "Connect with hotspot", the WiFi of the smartphone must be connected to the hotspot (LDV SMART+-xxxx) of the Thermostat via the WiFi settings of the smartphone, you need to confirm with the “yes” button that the connection was successful.

In the next step, a search will be carried out for that device. After the device is added successfully, then a message will be displayed that “The device is successfully added”.

c) Product functions

Tap one of the Thermostat icons to display the device screen to control its functions.
 

• Automatic Mode: The time schedule as set in the "Automatic schedule" settings will be executed. You can set different schedules for the different days and then the thermostat will follow it.
• Manual Mode: The temperature can be adjusted via manual changes directly in the app or on the knob. Please note that change by third party systems like Google Home and Amazon Alexa can be done just in the Manual mode.The automatic schedule is disabled once you are in the manual mode, and then you can control the Thermostat by manual entry in the app or with the knob. You can also use routines to control the thermostat based on time schedule or other sensors.
• Vacation Mode: Follows the temperature schedule as set in the "Vacation plan" settings.
• Scenes: To set static scenes to define a certain temperature.
• Open Window Reminder: If temperature is decreased to the set temperature, there will be a reminder about open window for the set time.
• Drift Temperature: Set a correction for the ambient temperature from -5.5°C to +5.5°C. Negative value will lower the ambient temperature by the set amount.
• Child Lock: To disable the manual change from the knob.
• Quick temperature rising: To increase the temperature of the thermostat quickly to the set temperature in the next 15 minutes.
• History: To view the measured temperature values from the last hours, days and months.