Robertshaw RS4320 USERS MANUAL - Manual (Page 5)

Operating the Thermostat
Any setting can be changed when it is flashing by pushing or
If a button is not pushed for 10 seconds the thermostat returns to
operation.
The following buttons can be accessed from the front panel.
LIGHT BAR: Turns on the display back light for 10 seconds.
FAN: Turns fan to AUTOMATIC, CIRCULATE or ON.
UP ARROW: Raises the setpoint or increases flashing item.
DOWN ARROW: Lowers the setpoint or decreases flashing item.
HEAT/COOL: Toggles through OFF, HEATING, COOLING, and AUTO. If
using an RS4220 or RS4320 and configured as HP then emergency heat
is also displayed.
Changing the User Settings
When and are pressed at the same time the thermostat will
display the current settings in order.
To change any setting:
When the setting is visible and flashing press the or
arrows to adjust the number on the screen.
SC = Scale in °F (Fahrenheit) or °C (Celsius)
bL = Display backlight always on ”y” or off ”n”. Also called the nightlight
feature. If the thermostat has been wired with 24V AC (R and C
terminals) then this feature will be displayed and the setting can
be changed.
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