DCN: 141-01060-13 1/05 TS40 Manual
6
Main Thermostat Screen
Heat Mode: Only heating will occur.
Cool Mode: Only cooling will occur.
Auto Mode: Heating or cooling will come on according to the heating and cooling setpoints. The
system will automatically switch between heating and cooling when the temperature exceeds the
setpoints.
EH Mode: Only available when Heat Pump HVAC System type is selected. When there is a
compressor failure with the heat pump system, setting the mode to EH will allow the supplemental
heat to come on whenever there is a heat call to provide heating. It also disables the compressor
outputs to prevent further damage to the system.
Main Thermostat Screen
FAN Button
The FAN button controls the HVAC system’s manual fan. The current manual fan mode is displayed
above the button. Normally this button is in the Auto mode. Pushing the FAN button once will turn the
manual fan operation On. Pushing it again will turn the manual fan off and return to the Auto mode (which
means OFF unless turned on by the furnace or AC). Changes in the fan mode are sent to the Control
Unit.
Fan Button
Auto
On
Main Thermostat Screen
RUN/HOLD Button
The RUN/HOLD button controls the automatic schedule operation. In the HOLD mode, the current
temperature is maintained until changed by manual or remote network command. In the Run mode, the
schedule loaded into the thermostat is activated and setpoints will change according to the schedule and
the time and day of week. There is also an AWAY mode that you can select if you press and hold the
button for 3 seconds. In the Away mode, preset Heating and Cooling setpoints are used.
Run Button
Run
Hold
Away
(Press and hold button)
RUN
AUTO
FAN
OFF
MODE
MENU
RUN
AUTO
FAN
OFF
MODE
MENU
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General