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C O M M E R C I A L
P R O D U C T S P E C I F I C AT I O N S
The F1943L-3P (19B16) is a wired local touchscreen
controller for VRF Heat Recovery, VRF Heat Pump and
Mini-VRF Systems.
Remote control via Wi-Fi is available with the free VRF
Controller App. See page 7.
NOTE - Refer to the Controller Installation Instructions and
the App User Manual for additional information.
Touchscreen Display
• 4 in. capacitive touchscreen with full color LCD display
and intuitive navigation
• Screen is illuminated when touched and remains lit
during control access
Dimensions
• 3-5/8 x 5 x 7/8 in. (H x W x D)
• Wallplate and additional hardware is furnished for
installation
Wiring
• Controller uses low voltage 4-wire 18AWG shielded cable
(not furnished) for easy connection to the indoor unit
Grouping
• Controller can control up to 16 indoor units on the same
system
CONTR OLLER USER SE T TIN GS
HOME SCREEN (Thermostat ON)
ACTUAL TEMPERATURE DISPLAY
UP/DOWN ARROWS ADJUST
TEMPERATURE
TEMPERATURE "SET TO" DISPLAY
RELATIVE HUMIDITY DISPLAY
MODE
V A R I A B L E R E F R I G E R A N T F L O W S Y S T E M S
VRF
62°F to 86°F
HEAT
COOL
OFF
F1943L-3P
Touchscreen Wi-Fi Controller
Bulletin No. 210967
Supersedes April 2022
Notes
Touch blank screen to turn on the backlight
if brightness setting is set to 0%.
Touch the MODE button on the upper-right
of the home screen to access the Main
Menu screen.
60 Hz
July 2023
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Table of Contents
Related Manuals for Lennox VRF F1943L-3P
Summary of Contents for Lennox VRF F1943L-3P
- Page 1 V A R I A B L E R E F R I G E R A N T F L O W S Y S T E M S F1943L-3P Touchscreen Wi-Fi Controller 60 Hz Bulletin No. 210967 C O M M E R C I A L July 2023 P R O D U C T S P E C I F I C AT I O N S Supersedes April 2022...
- Page 2 CONTR O L LER U SER S E T TING S MAIN MENU SCREEN Notes SETTINGS (Gear Icon) Touch the gear icon on the upper-right of the screen to access the Settings screen. See page 2. SYSTEM MODE Touch a button to switch unit operation. HEAT COOL AUTO...
- Page 3 CO NT R O L LER US ER S E T TIN GS ADDITIONAL SETTINGS SCREEN Notes SERVICE MENU Touch to access Service Menu screen, see page 3. Passcode protected. INFO SCREEN Displays controller information (firmware, etc.). REBOOT DEVICE BUTTON Reboots Controller Notes SERVICE MENU SCREEN (Passcode Required)
- Page 4 CONTR O L LER U SER S E T TING S AUX/ALT HEAT OPTIONS SCREEN Notes VRF is PRIMARY HEAT SOURCE ON (default) Touch button to switch. VRF is AUXILIARY HEAT Touch button to switch. OFF (default) SET SWITCHOVER TEMPERATURE Touch for Set Switchover Temperatures screen.
- Page 5 CO NT R O L LER US ER S E T TIN GS ALT HEAT FAN OPTIONS SCREEN Notes This screen is for Gas Heat or Other Heat source fan settings. FAN OPERATION Touch to switch. THERMO FAN SPEED Touch to switch. HIGH SWITCHOVER TEMPERATURES SCREEN Notes...
- Page 6 CONTR O L LER U SER S E T TING S INDOOR UNIT SETTINGS SCREEN Notes STATIC PRESSURE SETTING 0.00 to 1.00 in. w.g. Touch up/down arrows to adjust. Touch Save button to store. SWING SETTINGS Vertical Swing Settings Touch to set Swing Settings. See page 6. Horizontal Swing Settings SET INDOOR UNIT ADDRESS 1 to 16...
- Page 7 MOBILE APP The free VRF Controller app is available for use on iPhone and iPad , Android™ devices. ® ® Control cooling/heating temperatures, operating mode, fan operation and power for multiple units. Allows remote control of VRF systems directly from a smartphone.
- Page 8 Contact us at 1-800-4-LENNOX NOTE - Due to Lennox’ ongoing commitment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability. Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury.
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