Daikin TSTATD2100-2 Operating instructions

Owner's
Manual
and
Installation
Instructions
TSTATD2100-2
RESIDENTIAL
for
Residential Use
Digital Thermostat
Heat Pump • Non-Programmable

2
Table of Contents
Safety Warnings ...................................................................3
Front Panel.............................................................................4
Dispay.....................................................................................5
Normal Operation.................................................................6
Aux Heat.................................................................................7
Fahrenheit or Celsius...........................................................8
Preparation............................................................................9
Remove Old Thermostat .....................................................10
Battery Replacement ..........................................................11
Wire Connections................................................................12
Sample Wiring Diagrams...................................................13
Test Operation ......................................................................17
Troubleshooting ...................................................................19
Warranty................................................................................20

The two Alkaline “AA” batteries must be replaced at
least once every 12 months to ensure proper operation.
The Low Battery icon will appear on the display when it is
time to replace the batteries. If the thermostat is connected
to 24v power, the batteries should still be installed, but are
not required.
When “Low Battery “ is displayed the batteries must be
replaced immediately.The manufacturer cannot be liable for
improper operation of the thermostat if the batteries are not
immediately replaced.
Annual battery replacement is especially critical in locations
subject to freezing temperatures. The thermostat will be
unable to turn on the heating system if the batteries are
exhausted.
This device complies with Part 15 of the FCC rules. Operation
is subject to the following two conditions: (1)This device may
not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause
undesired operation.
Follow Installation Instructions carefully.
DISCONNECT POWERTOTHE
HEATER - AIR CONDITIONER
BEFORE REMOVINGTHE OLD
THERMOSTAT AND INSTALLING
THE NEW THERMOSTAT.
3
Safety Warnings

4
Front Panel
COOLER &
WARMER
BUTTONS
DISPLAY
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
On or Auto
FAN SWITCH
BI-COLOR LED
Heat or Cool demand
indicator when system
powered: Red = Heat
Green = Cool
MODE SWITCH
Cool, Off, or Heat
BATTERY
DOOR
AUX HEAT
NORM
EMRGC’Y LOCKOUT

5
Display
1Heat and Cool indicators. In normal operation, Heat or Cool
appears, depending on the Mode Switch position. When heat
or cool is energized, the Heat or Cool indicator will flash.
2Current room or set temperature.
3Desired set temperature indicator.
When this indicator is on, the large numbers represent the
desired room temperature. Pressing the COOLER or WARMER
button during normal operation will cause the large numbers
to switch from the current room temperature to the desired set
temperature.
4Indicates battery life is low; it is recommended to replace the
batteries at this time.
5Indicates auxiliary heat is energized.
SET TEMP
LOW
BATTERY
HEAT
AUX
COOL
88

6
Normal Operation
1Select Cool or Heat with the Mode Switch.
2Normally leave the fan switched to Auto.
In Fan Auto, the fan will turn on only with a heat
or cool demand. When Fan On is selected, the fan
will run continuously.
3Adjust the desired set temperature with the
COOLER and WARMER buttons.
Operation
COOLER &
WARMER
BUTTONS
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
On or Auto
FAN SWITCH
MODE SWITCH
Cool, Off, or Heat
AUX HEAT
NORM
EMRGC’Y LOCKOUT

7
Aux Heat
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
AUX HEA
T
SWITCH
AUX HEAT
NORM
EMRGC’Y LOCKOUT
Emergency - Disables all compressor functions* and energizes only
Aux Heat to satisfy the heat demand.
Normal - Aux Heat is allowed to run, if necessary, along with the
heat pump to satisfy the heat demand.
Lockout - Aux Heat will never turn on regardless of the heat demand.
*When the Aux Heat switch is in the Emergency position the
compressor will also be locked out during cooling operation.

8
Fahrenheit or Celsius
1Select Off with the Mode Switch.
2Press and hold the COOLER and WARMER buttons at the same
time until the temperature is displayed in degrees Celsius.
3Repeat this process to display the temperature in degrees
Fahrenheit.
Operation
COOLER & WARMER
BUTTONS
HEAT
BATTERIES
COOL
OFF
FAN
HEAT
AUTO
ON
MODE SWITCH
Cool, Off, or Heat
AUX HEAT
NORM
EMRGC’Y LOCKOUT

9
Preparation
• Proper installation of the thermostat will be accomplished by
following these step by step instructions. If you are unsure about
any of these steps, call a qualified technician for assistance.
• These tools will be required:
• Make sure your Heat Pump is working properly before
beginning installation of the thermostat.
• Carefully unpack the thermostat. Save the screws
and instructions.
• Turn off the power to the Heat Pump system at the
main fuse panel.
Flat Blade
Screwdriver
Wire Cutter
& Stripper

10
Remove & Replace Old Thermostat
• Remove the cover of the old thermostat. If it does not come off
easily check for screws.
• Loosen the screws holding the thermostat base or subbase to
the wall, and lift away.
• Disconnect the wires from the old thermostat.Tape the ends
of the wires as you disconnect them, and mark them with
the letter of the terminal for easy reconnection to the new
thermostat.
• Keep the old thermostat for reference purposes, until your new
thermostat is functioning properly.