Table 3: Button combinations
Menu or function Applicable in mode Button combination
Advance setting menu OFF mode Mode + Fan for 5 seconds
Access programming menu OFF mode, when programming
is enabled in advanced settings
Mode + Up for 5 seconds
Pipe state (Heat/Cool) selection OFF mode and system type = 2-
pipe FC
Fan + Up for 5 seconds
Ex-Factory Reset OFF mode Mode + Fan + Up for 5 seconds
Toggle keypad lock or unlock HEAT and COOL mode Mode + Up + Down for 10
seconds
Toggle EMER HEAT HEAT mode Mode + Down for 5 seconds
Enable or disable unoccupied
mode manually
HEAT and COOL mode Mode for 5 seconds
Advanced settings
You can edit user preference settings (UP), system configuration settings (SS), and installer
configuration settings (IS) through the advanced settings menu. To access the advanced settings
menu, press Mode to set the thermostat to OFF mode, then press and hold Mode and Fan for
5 seconds. The following tables list the adjustible settings.
User preference settings
Table 4: UP settings
Menu item Description Setting options Default
01 Temperature scale F: Fahrenheit
C: Celsius
F
02 User temperature calibration Temperature with calibration
value. Offset: +/- 5.4°F
(+/-3.0°C)
0.0°F (0.0°C)
03 Remote sensor temperature
calibration
Temperature with calibration
value. Offset: +/- 5.4°F
(+/-3.0°C)
0.0°F (0.0°C)
04 Pipe sensor temperature
calibration
Temperature with calibration
value. Offset: +/- 5.4°F
(+/-3.0°C)
0.0°F (0.0°C)
05 Backlight on duration 10 seconds
30 seconds
Always ON
10 seconds
06 Backlight brightness level 20, 40, 60, 80, 100 80
FCP Non-Programmable and Programmable Fan Coil or PTAC Thermostat Largo User Guide8