THERMOSTAT OPERATION
3
Caution:
When the battery icon
appears replace your AA
batteries immediately. Failure
to do so may result in your
heating and cooling system
becoming inoperable.
Easy to use controls
8
7
6
1
2
3
4
5
LCD Display:
See page 2 for details about this display
readout and icons.
1
2
3
4
5
Glow in the Dark Light Button:
Press and release the light button to turn on the
display light. The glow in the dark light button will
self illuminate for several hours after exposure to
ambient light. DO NOT hold down the light
button for more then 10 seconds. This will break
the communication link between the T955WH
and the base module.
Temperature Setpoint Buttons:
Press the
+ or - buttons to select the desired
room temperature.
6
Menu Keys:
Use these keys to set up your programming
options. Refer to the next page for instructions.
8
Humidity Key:
Use this key to enter the target humidity setpoint
screen. Refer to the next page for instructions.
7
Next Zone:
This button will appear if optional R251W
indoor remotes are present. By selecting
NEXT ZONE you can cycle through each of
the zones set up during the initial installation.
Fan Key:
Select ON or AUTO. The ON key will run the fan
continuously. The AUTO key will cycle the fan on
only when the heating or cooling system is on.
A Note About Programmable Fan:
The programmable fan feature will run the fan
continuously during any time period it is
programmed to be on. This is the best way to keep
the air circulated and to eliminate hot and cold
spots in your building.
System Key:
Selects the operation mode of your HVAC
system. Selecting HEAT turns on the heat
mode. Selecting COOL turns on the air
conditioning mode. Selecting OFF turns
both heating and cooling off. Selecting
AUTO will turn the HEAT or COOL on as
needed.
A Note About Auto Changeover:
Auto changeover will switch between
heating and cooling as needed. It is very
important to make sure the cooling setpoint
temperature is at least 3º above the heating
setpoint temperature and that the heating
setpoint temperature is at least 3º below
the cooling setpoint temperature.
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