Lennox VRF Wi-Fi Controller Mobile App User Guide

General

The F1943L-3P (19B16) is a wired touch screen programmable local controller for VRF Heat Recovery and Heat Pump indoor units. It enables Wi-Fi control via a mobile application.

This controller and app should be used only as described in this manual.

⚠️ WARNING

Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Installation and service must be performed by a licensed professional HVAC installer (or equivalent) or service agency.

❗ IMPORTANT

Frequent changes to operating mode may cause system malfunction. Allow at least one minute between mode changes to allow the system to stabilize.

This manual must be left with the owner for future reference.

Scan the QR code to download the Lennox VRF Wi-Fi Controller App from the Apple App Store or the Google Play store. The app provides control of the VRF Wi-Fi Controller.

[QR Code]

NOTE: Maximum number of thermostats per account is 50.

My VRF Controller App Operation

The easy-to-use interface allows monitoring and control of the VRF system from a mobile device.

Download the VRF Controller app from Google Play Store or Apple App Store as appropriate for your device.

Create an Account

The first time you use the app, you will need to create a user account.

1. Enter your email address.
2. Enter your password.
   • Password Requirements:
   • Must be at least 8 characters but fewer than 99 characters.
   • Must include a number.
   • Must include a special character.
   • Must include uppercase and lowercase letters.
3. Tap the Sign Up button.

Visual Description: App screen titled "Create An Account" with fields for Email and Password, and a "Sign Up" button. [Figure 1: Create an Account]

The app will email you a confirmation code. Enter that code and tap Confirm.

Visual Description: App screen titled "Confirm Code" with a field for Email and "Confirm" and "Resend Code" buttons. [Figure 2: New Account Confirmation Code]

Connecting the Controller

Prepare the F1943L-3P controller for connecting to the device.

Go to the wired controller:

1. Touch the Mode in the top-right corner of the screen.

Visual Description: Controller display showing current temperature 72°F, humidity 47%Rh, modes (Heat, Cool, Auto), fan speed (Low, Med, High, Auto). [Figure 3: Touch the Mode]

2. Tap Settings.

Visual Description: Controller settings screen showing System On/Off, Fan Auto, and a "Settings" option. [Figure 4: Tap Settings]

3. Tap the Connect button under the new network's name.

Visual Description: Controller screen showing network name "WiFi: Home 2.4 Wifi RSS1:25" and a "Connect" button. Temperature unit selection (Fahrenheit/Celsius) is also visible. [Figure 5: Tap Connect]

The controller will reboot into Bluetooth mode to prepare for receiving the Wi-Fi credentials.

Visual Description: Controller screen displaying "The Device Will Now Restart In Provisioning Mode." [Figure 6: Controller Reboots]

Now return to the app and tap Add.

Visual Description: App screen showing "Wifi Provision Status: Tap 'Add' in App". [Figure 7: Tap Add on App]

NOTE: If prompted to allow the app to enable Bluetooth or Location Services on your device, choose Accept. The app does NOT track the user's location.

Connect a Controller to the Home Wifi

Before you can access a controller with the app, you must connect the controller to your mobile device. This process uses secured encryption to protect your information.

1. Tap the Add button in the app.

Visual Description: App screen showing an "Add" button, "Devices" and "Settings" tabs. A list of rooms (Master Bedroom, Living Room, etc.) with current temperatures is displayed. [Figure 8: Tap Add on App]

2. Tap the name of the controller that you want to connect.

Visual Description: App screen showing a list of controllers, including "PROV_LEN100012". [Figure 9: Tap Controller Name]

3. Enter your home Wi-Fi's SSID and Password.

Visual Description: App screen with fields for SSID and Password, and "Cancel" and "Complete" buttons. [Figure 10: Enter SSID and Password]

4. Tap the Complete button.
5. When the "Provision Successful!" message displays, the process is complete. Tap the Ok button.

Visual Description: App screen displaying "Provision Successful! The device connected to the network" with an "Ok" button. [Figure 11: Provision Successful!]

NOTE: If prompted to allow the app to enable Bluetooth or Location Services on your device, choose Accept. The app does NOT track the user's location.

Selecting a Controller and App Setup

You are now ready to select a controller to monitor or control.

1. Tap the name of the controller from the list of devices.

Visual Description: App screen showing a list of devices (e.g., Master Bedroom, Living Room) with their current temperatures. [Figure 12: Select Controller]

Setup the App

The first time you use the app, you may want to make some settings changes.

1. Tap the Settings button to change the app settings.
2. Select whether you want the app's temperature display to be Celsius or Fahrenheit. This setting is only for the app and does not affect the controller.
3. Tap the Back button to return to the status screen.

Visual Description: App settings screen showing "Temperature Unit of Measure" selection (Fahrenheit/Celsius) and a "Log Out" button. [Figure 13: Set the App]

Controller Status Screen

Visual Description: The main controller status screen showing current temperature (72°F), humidity (47%Rh), modes (Heat, Cool, Auto), fan speed (Low, Med, High, Auto), and controls for Set Point Adjustment, Fan Operation Adjustment, and Power.

Set Point Adjustment: Slide Up or Down to adjust the setpoint for the currently selected mode of operation. To set the set points for Auto mode, select each Cooling and Heating and set the set points for each one, then select Auto Mode.

Fan Operation Adjustment: Select the fan speed indoor unit.

Power: Press and Hold to turn the indoor unit on or off.

Settings: Press to access the Settings screen. These settings affect the controller, not the app.

Mode of Operation Adjustment and Display: Select the mode of operation for the indoor unit. Displays the mode of operation and setpoint for each mode. When in Auto mode, each mode of operation will display its own setpoint.

Room Temperature Display: Displays the temperature of the temperature sensor in the controller.

Relative Humidity Display: Displays the relative humidity reading of the humidity sensor in the controller.

[Figure 14: Controller Status Screen]

Setup the Controller

The first time you use the controller, you will need to make some settings changes.

1. Give the controller a friendly name such as "My Room", "Living Room", or other.
2. Select if you want fan operation to stop when the indoor unit is satisfied or if you want the indoor unit fan to run continuously.
3. Select if an auxiliary heat device is connected to the indoor unit.
4. Select if you want the controller to display the temperature units in Celsius or Fahrenheit. This does not change the display on the app.
5. Tap the Back button to return to the status screen.

Visual Description: App screen for controller settings. Includes fields for "Device Friendly Name", "Fan Behavior" (Auto/On Always), "Optional Accessories" (Auxiliary Heat/Alternative Heat toggles), "Thermostat Display Temperature Unit" (Fahrenheit/Celsius), "IDU Calibration", and "Remove Device from this App". [Figure 15: Controller Settings Screen]

Setup a Scheduled Event

Setup scheduled operation. To setup scheduled operation, create one or more events with the operating parameters needed. Up to 20 events can be created.

1. Tap the Settings button (gear icon ⚙️) to create a scheduled event. The Settings screen will display.

Visual Description: Controller status screen with a gear icon in the top right. [Figure 16: Tap Gears Icon]

2. Tap the word "Presets" on the top right corner of the screen. The Presets or Scheduling screen will display.

Visual Description: App screen showing "Presets" option in the top right. [Figure 17: Tap Presets]

3. For each scheduled event, tap the plus sign (+) on the top right corner of the screen.
4. Select what days the schedule will apply to (e.g., Every Day, Weekends, Weekdays).
5. Select the operation start time. The operation will end when the next scheduled event begins.
6. Select the operation mode (Heat, Cool, Auto, Off).
7. Select the setpoint (e.g., 66°F, 67°F, etc.).
8. Tap Save.

Visual Description: Screen for setting up a scheduled operation, showing options for Day(s) of the week, Start Time, Mode, and Cooling Setpoint. [Figure 18: Set Up Scheduled Operation]

NOTE: Scheduling functionality available on iOS devices.

Delete a Scheduled Event

1. Tap the Settings button (gear icon ⚙️) to delete a scheduled action. The Settings screen will display.

Visual Description: Controller status screen with a gear icon in the top right. [Figure 19: Tap Gears Icon]

2. Tap the word "Presets" on the top right corner of the screen. The Presets or Scheduling screen will display.

Visual Description: App screen showing "Presets" option in the top right. [Figure 20: Tap Presets]

3. The Scheduling screen displays all scheduled actions.
4. Tap the action to be deleted and swipe left.
5. Tap the Remove button.
6. Confirm you want to delete the action.

Visual Description: Scheduling screen showing scheduled actions with "Remove" buttons. [Figure 21: Delete Scheduled Action]

Technical Support

Phone: 1-800-4LENNOX (1-800-453-6669)

Email: vrftechsupport@lennoxind.com

Website: www.LennoxCommercial.com

Scan the QR code to download the Lennox VRF & Mini-Splits App from the Apple App Store or the Google Play store. The app contains technical literature and troubleshooting resources.

[QR Code]