Honeywell TB7100A1000 Thermostat User Manual

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TB7100A1000 MultiPRO™  
Multispeed and Multipurpose Thermostat  
FOR CONVENTIONAL, HEAT PUMP, FAN COIL AND PTAC SYSTEMS  
PRODUCT DATA  
FEATURES  
•
Large, clear display with backlight shows the current  
and set temperature and time—even in the dark.  
•
•
Menu-driven programming make setup effortless.  
Beautiful ergonomic design is smart and sophisticated  
to match your customers’ lifestyle.  
•
•
•
•
•
•
Real-time clock keeps time during power failures and  
automatically updates to daylight savings.  
“Saving Changes” notification lets you know when the  
schedule changes have been saved.  
Change reminders let you know when to replace the  
batteries.  
Holiday Override options allow you to override the  
program schedule, as desired.  
APPLICATION  
Speedy same-schedule programming—no need to  
copy multiple days.  
The TB7100A1000 MultiPRO™ Multispeed and Multipurpose  
Thermostat is an effortless, seven-day programmable or non-  
programmable thermostat that provides universal system  
compatibility, precise comfort control and is easy-to-program.  
Armchair programming allows you to remove the  
thermostat from the wall for programming.  
•
•
Programmable or non-programmable modes.  
The TB7100 provides temperature control for gas, oil, electric,  
heat pumps, PTACs, and fan coil equipment for the following  
types of applications:  
Remote setback input for occupancy sensors or  
timeclocks.  
•
•
•
VersaSpeed™ fan ramping algorithm and fan reset  
algorithm (fan coil and PTAC applications).  
—
—
—
—
—
—
1H/1C conventional  
Up to 2H/1C heat pump  
4 pipe fan coil (3 fan speeds)  
2 pipe fan coil (3 fan speeds)  
2 pipe fan coil with Auxiliary Heat (3 fan speeds)  
PTAC (Hi, Lo fan speed)  
Up to 3 fan speeds for fan coil and 2 speeds for PTAC  
applications.  
Remote indoor air sensing option (20K ohm or 10K  
ohm).  
Contents  
Application ........................................................................  
Specifications ...................................................................  
Ordering Information ........................................................  
Installation ........................................................................  
Wiring ...............................................................................  
1
2
2
4
5
Installer Setup .................................................................. 11  
Operation .......................................................................... 17  
Troubleshooting (Table 12) ............................................... 23  
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Table 2. Electrical Ratings  
SPECIFICATIONS  
Voltage  
Terminal  
W (Heating)  
Y (Cooling)  
G (Fan), G , G  
(50/60 Hz)  
Running Current  
0.02 - 1.0A  
Thermostat Description: See Table 1.  
20 - 30 Vac  
20 - 30 Vac  
20 - 30 Vac  
Electrical Ratings: See Table 2.  
0.02 - 1.0A  
Temperature:  
Ratings:  
0.02 - 0.60A  
2
3
Operating Ambient:  
Table 3. Energy-saving Default Program Settings.  
TB7100: 0°F to 120°F (-18°C to 49°C).  
C7189U: 5% to 95%.  
Shipping: -30 °F to 150 °F (-34.4°C to 65.6°C).  
Display Accuracy: ±1°F (±0.5°C).  
Setpoint:  
Setpoints  
Schedule  
Period  
Time  
8:00am  
10:00pm  
—
Heat  
70°F (21°C)  
55°F (10°C)  
—
Cool  
75°F (24°C)  
85°F (29.5°C)  
—
Occ1  
Range:  
Unocc1  
Occ2  
Heating: 40°F to 90°F (4°C to 32°C).  
Cooling: 50°F to 99°F (10°C to 37°C).  
Default Settings: See Table 3.  
Unocc2  
—
—
—
Humidity Ratings (RH, non-condensing):  
TB7100: 5% to 90%.  
C7189U: 5% to 95%.  
Cycle Rates (at 50% Load):  
Heating: Selectable 1 - 12 cycles per hour.  
Cooling: Selectable 1 - 6 cycles per hour.  
Table 1. Thermostat Description.  
Interstage Differential:  
Droopless control. Once the first stage is running at 90% load,  
Feature  
Powering  
methods  
Description  
the thermostat energizes the second stage.  
•
•
•
Battery only  
24 Vac only  
Cool Indication: Displays “Cool On” when Cool is activated.  
Heat Indication: Displays “Heat On” when Heat is activated.  
24 Vac with battery backup  
System types  
•
•
•
•
•
•
Conventional (1 Heat, 1 Cool Stages)  
Heat Pump (up to 2 Heat, 1 Cool Stages)  
2 Pipe Fan Coil  
2 Pipe Fan Coil with Auxiliary Heat  
4 Pipe Fan Coil  
Auxiliary Heat Indication: Displays “Aux. Heat On” when  
Auxiliary Heat is activated.  
Clock Accuracy: ±1 minute per month.  
PTAC (up to 2 Heat, 1 Cool)  
Changeover  
Manual or Auto changeover selectable  
Finish:  
System setting Heat-Off-Cool-Auto  
TB7100: Premier White® color.  
C7189U Wall Mount Remote Indoor Sensor: Premier White®  
Fan setting  
Fan Speeds  
Auto-On  
color.  
Low, Medium, High  
TR21 Wall Mount Remote Indoor Sensor: Premier White®  
color.  
Remote  
Setback  
Remote Setback Input for occupancy  
sensor or DDC Setback  
Batteries:  
Fan Ramping VersaSpeed™ Fan Ramping Algorithm for  
Algorithm  
Two replaceable AA alkaline batteries: Power thermostat  
when 24 Vac common is not used.  
Non-replaceable lithium battery with ten-year life: Under nor-  
Automatic Fan Speed Selection (fan coil  
and PTAC applications)  
mal conditions holds calendar and time settings.  
ORDERING INFORMATION  
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the  
TRADELINE® Catalog or price sheets for complete ordering number.  
If you have additional questions, need further information, or would like to comment on our products or services, please write or  
phone:  
1
.
Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).  
Honeywell Customer Care  
2.  
1
985 Douglas Drive North  
Minneapolis, Minnesota 55422-4386  
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.  
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,  
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.  
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TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT  
NOTE: Alkaline batteries keep calendar and time if lithium  
battery is no longer functional.  
Resistance Characteristics of Remote Sensors:  
C7189U Remote Indoor Sensor: 10K ohm NTC.  
C7772 Flush-Mount Remote Indoor Sensor: 20K ohm NTC.  
TR21 Wall-Mount Remote Indoor Sensor: 20K ohm NTC.  
TR21-A Wall-Mount Remote Indoor Sensor: 10K ohm NTC.  
1
LEVEL  
LEVEL  
6-7/8 IN. (175 MM)  
Calibration (TB7100, C7089U, C7189U, T7770A):  
No field calibration required.  
BRACKET  
UP  
Mounting Means:  
TB7100: Direct wall-mount using mounting screws and  
5
IN.  
(
127 MM)  
2
2
anchors provided. Fits standard vertical or horizontal  
2
in. x 4 in. junction box.  
C7189U, TR21: Mounts directly on the wall using mounting  
screws and anchors provided. Fits a vertical 2 x 4 in. junc-  
tion box.  
MEDIUM COVER PLATE  
-5/16 IN. (211 MM)  
8
Cover Plate:  
3
2003796-001 Cover Plate is used to cover marks left on the  
wall by the old thermostat.  
Dimensions:  
UP  
TB7100 Thermostat: See Fig. 1.  
C7189U Remote Indoor Sensor: see Fig. 4.  
TR21 Remote Indoor Sensor: See Fig. 3.  
6
IN.  
2
(152 MM)  
2
32003796-001 Cover Plate: See Fig. 2.  
LARGE COVER PLATE  
1
BRACKET FOR MOUNTING ON JUNCTION BOX NOT INCLUDED  
WITH COVER PLATE  
.
2
USE BOTTOM MOUNTING HOLES.  
M13669  
Fig. 2. 32003796-001 Cover Plate dimensions in in. (mm).  
THERMOSTAT  
AND WALLPLATE  
3
(76)  
6
(152)  
1
-3/8  
35)  
(
3-3/4  
(95)  
4-9/16  
(116)  
M13668  
Fig. 1. TB7100 Thermostat  
dimensions in in. (mm).  
7
/8 (22)  
M27480  
Fig. 3. TR21 indoor sensor dimensions in in. (mm).  
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NO  
YES  
4
-5/8  
117)  
(
NO  
NO  
5 FEET  
1.5 METERS]  
[
1
(
-1/8  
29)  
M22258  
2
-3/4 (70)  
M4465  
FRONT VIEW  
SIDE VIEW  
Fig. 5. Select thermostat location.  
Do not install the thermostat where it can be affected by:  
Fig. 4. C7189U Indoor Sensor dimensions in in. (mm).  
—
—
—
—
—
Drafts or dead spots behind doors and in corners.  
Hot or cold air from ducts.  
Radiant heat from sun or appliances.  
Concealed pipes and chimneys.  
Unheated (uncooled) areas such as an outside wall behind  
the thermostat.  
MERCURY NOTICE  
If this control is replacing a control that contains  
mercury in a sealed tube, do not place your old  
control in the trash. Dispose of properly.  
Separate Wallplate from Thermostat  
Contact your local waste management authority  
for instructions regarding recycling and the proper  
disposal of an old control.  
1.  
Separate the wallplate from the thermostat. See Fig. 6.  
WALLPLATE  
WIRE HOLE  
INSTALLATION  
When Installing this Product...  
1.  
Read these instructions carefully. Failure to follow them  
could damage the product or cause a  
hazardous condition.  
2.  
3.  
4.  
Check ratings given in instructions and on the product to  
ensure the product is suitable for your application.  
Installer must be a trained, experienced service  
technician.  
After installation is complete, check out product  
operation as provided in these instructions.  
THERMOSTAT  
M22267  
Fig. 6. Separate wallplate from thermostat.  
CAUTION  
Install Wallplate (See Fig. 7)  
Electrical Shock or Equipment Damage Hazard.  
Can shock individuals or short equipment  
circuitry.  
Mount the thermostat horizontally on the wall:  
1.  
.
Pull the wires through the wire hole on the wallplate.  
Position the wallplate on the wall with the arrow pointing  
up. Level the wallplate for appearance only.  
2
Disconnect power supply before installation.  
3
.
Use a pencil to mark the mounting holes.  
Select Thermostat Location  
4. Remove the wallplate from the wall and drill two 3/16 in.  
holes in the wall (if drywall) as marked. For firmer  
material such as plaster, drill two 7/32 in. holes. Tap the  
wall anchors (provided) into the drilled holes until flush  
with the wall.  
Select a location for the thermostat about 5 ft (1.5m) above the  
floor in an area with good air circulation at average  
temperature. See Fig. 5.  
5
.
Pull the wires through the wire hole on the wallplate and  
position the wallplate over the wall anchors.  
Insert the mounting screws into the wall anchors and  
tighten.  
6.  
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WALL  
WIRES THROUGH WALL  
AND WIRE SLOT  
WALL  
ANCHORS (2)  
MOUNTING  
HOLES  
M13666  
WIRE HOLE  
Fig. 9. Insert wires into terminal block.  
M13665  
MOUNTING  
SCREWS (2)  
4
.
.
Push excess wire back into the wall opening and restrict  
wires to the shaded area. See Fig. 10.  
Plug the wall opening with nonflammable insulation to  
prevent drafts from affecting the thermostat.  
5
Fig. 7. Install wallplate.  
WALLPLATE  
WIRE  
WIRING  
CAUTION  
Electrical Shock Hazard.  
Can cause electrical shock or equipment damage.  
Disconnect power supply before connecting wiring.  
IMPORTANT  
—
All wiring must agree with applicable codes,  
ordinances and regulations.  
—
Use 18 gauge thermostat wire. Shielded cable is not  
required.  
NOTES:  
—
WALL OPENING  
Refer to Table 5 for terminal designation  
descriptions.  
SHADED AREA  
M22266  
—
See Fig. 11 through 17 for wiring diagrams for  
specific equipment applications.  
Fig. 10. Restrict wires to shaded area of wire hole.  
Table 4. Wiring Diagrams.  
1.  
Select set of terminal identifications that correspond to  
your system type (conventional or heat pump). See Fig. 8.  
Wiring Diagram  
Figure  
System Type  
SCREW  
TERMINALS  
Standard Heat/Cool (1H/1C)  
Heat Only  
11, 12  
13  
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
Heat Only with Fan  
14  
Cool only  
15  
Heat Pump (No Auxiliary Heat) (1H/1C)  
Heat Pump (with Auxiliary Heat) (2H/1C)  
16  
17  
4
2
2
Pipe Fan Coil  
18  
M27415  
Pipe Fan Coil  
19  
Fig. 8. Terminal identifications for system type.  
Pipe Fan Coil with aux. heat  
20  
PTAC 1H/1C (High speed, Low speed fan) 21  
PTAC 2H/1C (High speed, Low speed fan) 22  
2
3
.
.
Loosen screw terminals used for the application.  
Insert the wires into the terminal block and tighten each  
screw terminal. See Fig. 9.  
Multiple TR21 Sensors  
25, 26, 27  
28  
Multiple C7189U Sensors  
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Table 5. Terminal Designation Descriptions.  
Terminal  
NOTES:  
1.  
When used in a single-transformer system, leave  
metal jumper wire in place between Rc and R. If  
used on a two-transformer system, remove metal  
jumper wire between Rc and R.  
Designation  
Description  
Rc  
Power for cooling—connect to secondary side  
(
see Note 1) of cooling system transformer.  
2.  
Common wire is optional when thermostat is used  
with batteries. When using separate transformers  
for heating and cooling, the common must come  
from the cooling transformer.  
If thermostat is configured for a heat pump in the  
Installer Setup, configure changeover valve for  
cool (O-factory setting) or heat (B).  
R
Power for heating—connect to secondary side  
(see Note 1) of heating system transformer.  
Y
C
Compressor output.  
3
.
.
Common wire from secondary side of cooling  
(see Note 2) system transformer.  
4
Sensor wires must have a cable separate from the  
thermostat control cable.  
W1  
Heat relay. Auxiliary heat relay for heat pump,  
PTAC.  
G
Fan relay. Low fan speed for fan coil and PTAC.  
Fan relay. Medium fan speed for fan coil only.  
G2  
G3  
Fan relay. High fan speed for fan coil and  
PTAC.  
O/B  
Changeover valve for heat pumps.  
(see Note 3)  
S1  
(
Indoor remote sensor, remote setback, or  
See Note 4) changeover input.  
Indoor remote sensor, remote setback, or  
S2  
(See Note 4) changeover input.  
Conventional System Wiring  
3
COMPRESSOR CONTACTOR  
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
1
L1  
HOT)  
FAN RELAY  
(
2
4 VAC  
1
C
G
Y
3
L2  
L1  
HOT)  
W1  
G2  
G3  
S1  
S2  
(
2
2
4 VAC  
L2  
O/B  
RC  
R
COMPRESSOR CONTACTOR  
FAN RELAY  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
SETBACK  
COOLING  
TRANSFORMER  
L1  
2
1
(
HOT)  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
SETBACK  
HEAT RELAY  
2
4 VAC  
HEAT RELAY  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
L2  
HEATING  
TRANSFORMER  
2
3
FACTORY INSTALLED JUMPER.  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION  
IS OPTIONAL.  
M27416  
2
3
REMOVE FACTORY INSTALLED JUMPER.  
Fig. 11. Typical wiring of single transformer 1H/1C system.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION  
IS OPTIONAL. WHEN USED, THE COMMON MUST CONNECT  
TO THE COOLING TRANSFORMER SECONDARY.  
M27417  
Fig. 12. Typical hookup of dual transformer 1H/1C system.  
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Heat Pump System Wiring  
1
3
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
L1  
L1  
(
HOT)  
(
HOT)  
L2  
24 VAC  
3
24 VAC  
C
G
W1  
G2  
G3  
S1  
S2  
L2  
2
1
Y
4
O/B  
RC  
R
INDOOR TEMPERATURE  
SENSOR/REMOTE  
SETBACK  
2
HEAT RELAY  
CHANGEOVER VALVE  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
COMPRESSOR CONTACTOR  
FAN RELAY  
SETBACK  
5
2
3
FACTORY INSTALLED JUMPER.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
OPTIONAL.  
M27418  
2
3
FACTORY INSTALLED JUMPER.  
Fig. 13. Typical hookup of heat-only system.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS  
OPTIONAL.  
3
1
C
G
Y
O/B  
RC  
R
W1  
4
5
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE  
INSTALLER SETUP.  
L1  
(
HOT)  
G2  
G3  
S1  
S2  
OPTIONAL INDOOR REMOTE SENSOR OR REMOTE SETBACK.  
WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT  
2
4 VAC  
CABLE.  
M27421  
L2  
2
Fig. 16. Typical hookup of single-stage heat pump with no  
auxiliary heat (1H/1C).  
HEAT RELAY  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
SETBACK  
FAN RELAY  
L1  
(
HOT)  
3
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
C
G
Y
O/B  
RC  
R
2
4 VAC  
W1  
G2  
G3  
S1  
S2  
L2  
2
3
FACTORY INSTALLED JUMPER.  
1
4
WHEN USING BATTERIES, THE 24V COMMON CONNECTION  
IS OPTIONAL.  
M27419  
2
Fig. 14. Typical hookup of heat-only system with fan.  
CHANGEOVER VALVE  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
COMPRESSOR CONTACTOR  
FAN RELAY  
5
SETBACK  
3
1
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
AUXILIARY HEAT RELAY  
L1  
(
HOT)  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
2
4 VAC  
L2  
2
3
FACTORY INSTALLED JUMPER.  
2
WHEN USING BATTERIES, THE 24V COMMON CONNECTION  
IS OPTIONAL.  
COMPRESSOR CONTACTOR  
FAN RELAY  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
SETBACK  
4
5
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"  
IN THE INSTALLER SETUP.  
OPTIONAL INDOOR REMOTE SENSOR OR REMOTE SETBACK.  
WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT  
CABLE.  
M27422  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
Fig. 17. Typical hookup of single-stage heat pump with  
auxiliary heat (2H/1C).  
2
3
FACTORY INSTALLED JUMPER.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION  
IS OPTIONAL.  
M27420  
Fig. 15. Typical hookup of cool-only system.  
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Fan Coil System Wiring  
3
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
1
L1  
3
(
HOT)  
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
1
L1  
HOT)  
(
24 VAC  
L2  
2
4 VAC  
2
L2  
2
TWO PIPE HEAT/COOL RELAY  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
HEAT RELAY  
LOW FAN RELAY  
SETBACK/CHANGEOVER  
PIPE SENSOR  
COOLING RELAY  
LOW FAN RELAY  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
SETBACK  
MEDIUM FAN RELAY  
HIGH FAN RELAY  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
MEDIUM FAN RELAY  
HIGH FAN RELAY  
2
3
FACTORY INSTALLED JUMPER.  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS  
OPTIONAL.  
M27425  
2
3
FACTORY INSTALLED JUMPER.  
Fig. 20. Typical wiring of 2 pipe fan coil without reheat.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS  
OPTIONAL.  
M27423  
Fig. 18. Typical wiring of 4 pipe fan coil.  
PTAC System Wiring  
L1  
(
HOT)  
3
3
C
G
Y
O/B  
RC  
R
W1  
1
24 VAC  
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
L1  
(
HOT)  
G2  
G3  
S1  
S2  
L2  
1
2
4 VAC  
4
L2  
2
2
TWO PIPE HEAT/COOL RELAY  
CHANGEOVER VALVE  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
SETBACK/CHANGEOVER  
PIPE SENSOR  
LOW FAN RELAY  
COMPRESSOR CONTACTOR  
LOW FAN RELAY  
5
SETBACK  
HIGH FAN RELAY  
MEDIUM FAN RELAY  
AUXILIARY HEAT RELAY  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
HIGH FAN RELAY  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
2
3
FACTORY INSTALLED JUMPER.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS  
OPTIONAL.  
2
3
FACTORY INSTALLED JUMPER.  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS  
4
5
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE  
INSTALLER SETUP.  
OPTIONAL.  
M27424  
OPTIONAL INDOOR REMOTE SENSOR OR REMOTE SETBACK.  
WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT  
CABLE.  
Fig. 19. Typical wiring of 2 pipe fan coil with reheat.  
M27426  
Fig. 21. Typical hookup of PTAC with HI and LO fan speeds  
1H/1C).  
(
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TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT  
Installing Batteries  
L1  
(
HOT)  
1.  
Install two AA alkaline batteries on the back of the ther-  
mostat as marked. See Fig. 23.  
3
2
4 VAC  
C
G
Y
O/B  
RC  
R
W1  
G2  
G3  
S1  
S2  
L2  
1
BATTERIES (2)  
BATTERY HOLDER  
4
2
CHANGEOVER VALVE  
INDOOR TEMPERATURE  
SENSOR/REMOTE  
COMPRESSOR CONTACTOR  
LOW FAN RELAY  
5
SETBACK  
HIGH FAN RELAY  
AUXILIARY HEAT RELAY  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD  
PROTECTION AS REQUIRED.  
2
3
FACTORY INSTALLED JUMPER.  
M22259  
BACK OF THERMOSTAT  
WHEN USING BATTERIES, THE 24V COMMON CONNECTION IS  
OPTIONAL.  
Fig. 23. Installing batteries.  
Locate and remove tab labeled Remove. See Fig. 24.  
4
5
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"  
IN THE INSTALLER SETUP.  
2.  
OPTIONAL INDOOR REMOTE SENSOR OR REMOTE SETBACK.  
WIRES MUST HAVE A CABLE SEPARATE FROM THE THERMOSTAT  
CABLE.  
M27427  
IMPORTANT  
This tab must be removed in order to set the real-time  
clock.  
Fig. 22. Typical hookup of PTAC with HI and LO fan speeds  
2H/1C).  
(
REMOVE  
TAB  
POWER THE THERMOSTAT  
You can choose from three methods to power the thermostat:  
ITON  
•
•
•
Batteries only (AAA alkaline).  
24 Vac direct connection only.  
24 Vac direct connection with battery backup (AAA alkaline).  
AL  
M
V
 D
 I
INST  
Wiring 24 Vac Common  
•
Single-Transformer System—Connect the common side of  
the transformer to the C screw terminal of the thermostat  
wallplate. Leave the metal jumper wire in place between Rc  
and R.  
ITON  
AL  
M
V
 D
  I
  G
INST  
•
Two-Transformer System—Connect the common side of  
the cooling transformer to the C screw terminal of the  
thermostat wallplate. Remove the metal jumper wire  
between Rc and R.  
M22260  
Fig. 24. Remove tab labeled REMOVE from  
thermostat back.  
Locate and Mount TR21 or C7189U Remote  
Indoor Temperature Sensor (Optional)  
Locate and mount the sensor in the same fashion as the  
thermostat. See the Select Thermostat Location section.  
Consider the following as well:  
1.  
Be sure wire distance between sensor and thermostat is  
less than 200 feet.  
2.  
Mark the area on the wall selected for mounting the  
sensor or junction box.  
3.  
4.  
5.  
Sensor wire must be separate from the thermostat cable.  
Run wire cable to a hole at the selected wall location.  
Pull approximately three inches of wire through the  
opening.  
NOTE: Color-coded, 18-gauge wire is recommended.  
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TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT  
Wire Indoor Sensor  
SUBBASE  
S1 S2  
CAUTION  
TR21  
Electrical Interference (Noise) Hazard.  
Can cause erratic system operation.  
Keep wiring at least one foot away from large inductive  
loads such as motors, line starters, lighting ballasts and  
large power distribution panels.  
T
T
T4  
T3  
1
TR21-A  
1
.
Check Installer Setup Number (ISU) 340 to ensure it is  
set to the desired value. (See Table 6.)  
Wire sensor to S1 and S2 thermostat terminals.  
Push excess wire back into the hole. Plug the hole using  
nonhardening caulk, putty or insulation to prevent drafts  
from affecting performance.  
TR21  
T
T
2.  
.
3
4
5
.
.
Remove sensor cover.  
Mount sensor to the wall or junction box using the  
1
THE TR21-A IS A 10K OHM SENSOR.  
screws and anchors provided.  
M27483  
6
.
.
Level the sensor for appearance only. Device functions  
correctly even when not level.  
Install sensor cover.  
Fig. 27. Wiring two TR21 (20K ohm) Sensors and one  
TR21-A (10K ohm) sensor to provide a temperature  
averaging network  
7
Sensor Wiring for Temperature Averaging  
SUBBASE  
S1  
S2  
SUBBASE  
S1  
S2  
TR21  
T
TR21  
T
1
C7189  
C7189  
T
T
C7189  
C7189  
TR21  
T
TR21  
T
1
WIRES MUST HAVE A CABLE SEPARATE  
FROM THE THERMOSTAT CABLE.  
T
T
M27432  
Fig. 28. Wiring four C7189U (10K ohm) Sensors to provide  
a temperature averaging network.  
M27481  
SET CALENDAR AND TIME  
Fig. 25. Wiring four TR21 (20K ohm) Sensors.  
This thermostat is designed to, under normal use,  
automatically keep current time and day in memory for up to  
ten years once the calendar is set. There are two ways to set  
the calendar for this thermostat:  
SUBBASE  
S1  
S2  
Setting Calendar Once Functioning  
T4  
T3  
T4  
T3  
See steps 1 through 4, in the Advanced Settings section, to set  
year, month and day.  
Setting Calendar When First Powered  
1
1
When first powered, the thermostat proceeds through a  
sequence of screens to set the calendar.  
TR21-A  
TR21-A  
—
When first powered, the thermostat proceeds through a  
sequence of screens to set the calendar. See Fig. 29.  
1
THE TR21-A IS A 10K OHM SENSOR.  
M27482  
Fig. 26. Wiring two TR21-A (10K ohm) Sensors to provide a  
temperature averaging network.  
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3.  
The Setup Number displays to the center of the screen.  
It is a four-digit code beginning with zero. The current  
setting is displayed to the right.  
MONTH  
YEAR  
DAY  
UP AND DOWN  
BUTTONS  
CHANGES  
MONTH,  
NOTE: To cycle through the Setup Numbers, press the up or  
down arrow.  
DAY AND  
YEAR  
Tue  
DeSelect Day FanUseEdit  
System & Fan  
Schedule  
View  
Clock & More  
DONE  
BUTTON  
Tue  
ADVANCES  
TO TIME  
Set To  
SETTING  
SCREEN  
System Auto Fan Auto  
Heat Off Cool  
System & Fan  
Schedule  
Clock & More  
GO BACK BUTTON  
GOES BACK TO LAST SETTING  
NEXT BUTTON  
ADVANCE TO NEXT SETTING  
M22302A  
Fig. 29. Setting calendar when thermostat is first powered.  
M22304  
UP AND DOWN BUTTONS  
CHANGES TIME  
Fig. 31. Entering Installer Setup.  
User Settings (Simple Set)  
Access to the user settings is obtained as follows:  
1
2
.
.
From the main screen, press SYSTEM.  
Press and hold the center key approximately five sec-  
onds.  
View  
3.  
The Setup Number displays to the center of the screen.  
It is a four-digit code beginning with zero. The current  
setting is displayed to the right.  
Clock & More  
NOTE: To cycle through the Setup Numbers, press the up or  
down arrow.  
DONE BUTTON  
ADVANCES TO HOME SCREEN  
M22303  
Fig. 30. Setting time when thermostat is first powered.  
INSTALLER SETUP  
System Auto Fan Auto  
Em Heat Off Cool  
FanUseEdit  
System & Fan  
Advanced Settings  
CancelDone  
The thermostat has advanced settings to match the HVAC  
system. These settings can be adjusted to match specific  
needs.  
There are two different groups of settings:  
—
—
A complete set designed for the installation use.  
A simple set to limit accessibility for typical users.  
M22305  
Fig. 32. Entering User Setup.  
Installer Settings (Complete Set)  
Access to the installer settings is obtained as follows:  
1
.
From the main screen, press SYSTEM.  
Press and hold the two keys on either side of the center  
key for approximately five seconds. (See Fig. 31.)  
2.  
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INSTALLER SETUP NUMBERS (ISU), SETTINGS, AND TESTS (TABLE 6)  
Use the Installer System Test to test the heating, cooling and  
fan. Refer to the latter portion of Table 6.  
IMPORTANT  
Use Installer System Test to test heating, cooling and  
fan. The setting chosen for System Type (ISU 0170)  
can prevent some System Test Numbers from  
appearing.  
CAUTION  
Equipment Damage Hazard.  
Minimum compressor off time is bypassed during  
Installer System Test  
NOTE: Unless otherwise noted, setup items are accessible  
through only the Installer setup and not the User  
setup.  
Avoid cycling compressor quickly.  
Table 6. Installer Setup Menu.  
Installer  
Setup  
Number  
Installer Setup  
Name  
Default  
Setting  
All Settings  
Notes  
Available year range: 2001 - 2178  
Available year range: 2001 - 2178  
0120  
0130  
0140  
0150  
0160  
Date (Year Upper) 20  
Date (Year Lower) 08  
20—21  
00-99  
1-12  
Date (Month)  
Date (Day)  
6
15  
4
1-31 (Month Dependent)  
Schedule Options  
0—Non-Programmable  
4—Programmable  
0170  
System Selection  
1
1—1H/1C Conv  
Relay Y is used for 2 pipe fan coil output relay.  
2
3
4
5
6
7
8
9
1
—1H w/o fan  
—1H with fan  
—1C  
—1H/1C HP  
—2H/1C HP  
—4 pipe Fan Coil  
—2 pipe Fan Coil  
—2 pipe Fan Coil w/ Aux Heat  
0—PTAC 1H/1C (Hi speed, Lo  
speed Fan)  
1—PTAC 2H/1C (Hi speed, Lo  
1
speed Fan)  
0
180  
185  
Heat Fan Operation 0  
0—Fossil  
Only shows up if conventional system with heat  
stages and fan capability is selected (ISU 0170). If  
heat pump is selected, fan defaults to electric. If fan  
coil or PTAC modes are selected, fan defaults to  
electric (does not show up).  
1—Electric  
0
Pre-occupancy  
Purge Duration  
0
0—no duration  
1—one hour  
Shown only if system has fan and schedule is  
programmable (ISU 0160).  
2
—two hours  
Pre-occupancy purge is enabled by a nonzero  
duration.  
3—three hours  
0
190  
220  
Reversing Valve  
O/B  
0
3
0—O (O/B On Cool)  
1—B (O/B On Heat)  
Only shown if heat pump or PTAC system is selected.  
0
Cycles Per Hour  
1-6  
Only shown if system has cool stages (ISU 0170).  
Shown for heat pump, fan coil, PTAC, and  
conventional cooling stages.  
(
CPH) for first stage  
cooling/compressor  
0240  
0270  
0280  
CPH for first stage  
heat  
5
9
0
1-12  
1-12  
Only shown if system is conventional with heat  
stages, 4 pipe fan coil, 2 pipe fan coil (ISU 0170).  
CPH for Em Heat  
Only shown if HP with reheat, 2 pipe fan coil with  
reheat, and PTAC with reheat (ISU 0170).  
Continuous  
Backlight  
0—No  
1—Yes  
Always shown; however, if AC power is not present,  
the option is overridden and normal backlight  
operation occurs.  
0300  
Changeover  
1
0—Manual  
Only shown if system has both heat and cool stages  
(ISU 0170). Shown for CNV, HP, PTAC and 4 pipe fan  
coil (ISU 0170). Not shown for 2 pipe fan coil modes.  
1—Auto  
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Table 6. Installer Setup Menu. (Continued)  
Installer  
Setup  
Number  
Installer Setup  
Name  
Default  
Setting  
All Settings  
2 (1.5)—2°F (1.5°C)  
3 (2.0)—3°F (2.0°C)  
Notes  
0310  
Deadband  
3°F  
Only shown if Automatic Changeover selected (ISU  
0300).  
(2°C)  
4
5
6
7
8
9
(2.5)—4°F (2.5°C)  
(3.0)—5°F (3.0°C)  
(3.5)—6°F (3.5°C)  
(4.0)—7°F (4.0°C)  
(4.5)—8°F (4.5°C)  
(5.0)—9°F (5.0°C)  
0320  
0330  
0340  
Temperature  
Indication Scale  
0
1
0
0—°F  
1—°C  
Daylight Saving  
0—Disabled  
1—Enabled (US)  
Remote Temp  
Sensor/Remote  
Setback/  
0—None  
Only shown on models that offer remote sensing.  
1—Remote 10K Indoor  
2—Remote 20K Indoor  
3—Changeover 2 pipe Fan Coil  
modes only  
Changeover Input  
NO input (default mode is Heat)  
NO input (default mode is Cool)  
4—Changeover 2 pipe Fan Coil  
modes only  
0
340  
Remote Temp  
Sensor/Remote  
0
0—None  
Only shown on models that offer remote sensing.  
(
Non-  
1—Remote 10K Indoor  
2—Remote 20K Indoor  
3—Changeover 2 pipe Fan Coil  
modes only  
program Setback/  
mable) Changeover Input  
NO input (default mode is Heat)  
NO input (default mode is Cool)  
4—Changeover 2 pipe Fan Coil  
Hotel card NO, with 1 second software delay going  
from UnOcc to Occupied; 2 minute delay going from  
Occupied to UnOcc.  
6—Remote Setback  
Hotel Card NC, with 1 second software delay going  
from UnOcc to Occupied; 2 minute delay going from  
Occupied to UnOcc.  
0
341  
342  
Delay for Remote  
Setback  
0
0
0—No Delay  
2—2 Minute Delay  
Only shown if Remote Setback (ISU 0340) is enabled.  
0
Override Option  
0—No Override  
1—Override  
This option is only available for non-programmable  
mode (ISU 0160)  
(
only available in  
non-programmable  
mode)  
0
343  
346  
Unoccupied  
Heating Setpoint  
60°F  
80°F  
50-65°F  
10-18°C  
(
only when remote  
setback enabled)  
0
Unoccupied  
Cooling Setpoint  
75-90°F  
24-30°C  
(
only when remote  
setback is enabled)  
0
347  
348  
Fan Ramping  
1
0
0—Disabled (Lo, Med, Hi)  
To enable the fan ramping algorithm. Only available  
for fan coil or PTAC applications (ISU 0170)  
1—Enabled  
0
Fan Mode  
0—User can choose Cycle or  
Constant 3 speed: Low->Med->  
High->Auto-> Low  
To select a particular fan mode: Auto is the fan ramp  
mode. If ramping is not selected, fan mode  
automatically defaults to Low Med High (Constant  
only) and ISU 0348 is unavailable. Only available for  
fan coil or PTAC applications (ISU 0170)  
1—Cycle Only - Auto only  
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Table 6. Installer Setup Menu. (Continued)  
Installer  
Setup  
Number  
Installer Setup  
Name  
Default  
Setting  
All Settings  
0—Inactive  
—Reset back to Auto after 2  
hours  
—Reset back to Auto after 4  
Notes  
0
349  
Auto Fan Reset  
0
The timer will be set after the user selects the  
constant fan speed. Fan will be set to Auto  
automatically when time out. The start time is  
calculated after initial call for heat/cool is satisfied,  
then 2 hour timing begins.  
1
2
hours  
The timer will be set after the user selects the  
constant fan speed. Fan will be set to Auto  
automatically when time out. The start time is  
calculated after initial call for heat/cool is satisfied,  
then 4 hour timing begins. Only available for fan coil  
or PTAC applications (ISU 0170)  
0
535  
540  
Temporary  
Occupied Duration  
Limit  
3
4
0–12 hours  
0 means no limit.  
0
Number of Periods  
2—2 Periods  
Does not appear if Non-programmable is chosen (ISU  
0160).  
4—4 Periods  
Applies to all days of the week. If 2 is selected the  
Cancel Period option will not appear on the display.  
0580  
Minimum  
Compressor Off  
Time  
5
0—Off  
2—2 minutes  
3—3 minutes  
Only shown if system has cool stages in CNV, Heat  
Pump, PTAC (ISU 0170).  
4
5
—4 minutes  
—5 minutes  
0600  
0610  
0640  
0650  
0660  
0670  
Heat Temperature 90  
Range Stops  
40 to 90°F (4 to 32°C)  
50 to 99°F (10 to 37°C)  
12—12 Hour  
Only shown if system has heat stages (ISU 0170).  
Only shown if system has cool stages (ISU 0170).  
Cool Temperature 50  
Range Stops  
Clock Format  
12  
24—24 Hour  
Extended Fan-on  
time Heat  
0
0—Off  
90—90 seconds  
Not displayed if fan set to fossil or cool only systems  
(ISU 0170)  
Extended Fan-on  
time Cool  
0
0—Off  
40—40 seconds  
Only shown if system has cool stages. (ISU 0170)  
Keypad Lockout  
0
0—Unlocked  
Unlocked: All functions accessible.  
Partial 1: Locks out schedule and system changes.  
Partial 2: Locks out schedule, system, and fan  
changes.  
1
2
—Partial Lockout 1  
—Partial Lockout 2  
3—Partial Lockout 3  
Partial 3: Locks out schedule, system, fan, and up/  
down arrow changes.  
4—Fully Locked  
Full: Entire interface locked/non-functional.  
0680  
Temperature  
Control Heat  
2
1—Less Aggressive  
2—Standard  
Only shown if system has heat stages (ISU 0170).  
Only integral gains are affected by this setting. The  
setting affects control operation in all control regimes  
3—More Aggressive  
(not just recovery or setpoint change).  
0
685  
690  
Recovery Heat  
Ramp Rate  
5
2
0-20°F/hour  
Only shown if system has heat stages (ISU 0170).  
0 disables the ramped recovery (step setpoint change  
at period start time).  
0
Temperature  
Control Cool  
1—Less Aggressive  
2—Standard  
Only shown if system has cool stages (ISU 0170).  
Only integral gains are affected by this setting. The  
setting affects control operation in all control regimes  
3—More Aggressive  
(not just recovery or setpoint change).  
0695  
Recovery Cool  
Ramp Rate  
3
0-20°F/hour  
Only shown if system has cool stages (ISU 0170).  
0 disables the ramped recovery (step setpoint change  
at the period start time).  
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Table 6. Installer Setup Menu. (Continued)  
Installer  
Setup  
Number  
Installer Setup  
Name  
Default  
Setting  
All Settings  
Notes  
0700  
Temperature  
Display Offset  
0
-3 (-1.5)— -3°F (-1.5°C)  
-2 (-1.0)— -2°F (-1.0°C)  
This offset applies to both the control temperature  
and to the display temperature for indoor sensor (and  
remote indoor sensor).  
-1 (-0.5)— -1°F (-0.5°C)  
0
1
2
3
(0.0)—0°F (0.0°C)  
(0.5)—1°F (0.5°C)  
(1.0)— 2°F (1.0°C)  
(1.5)—3°F (1.5°C)  
0
710  
720  
Restore Factory  
Defaults  
0
2
0—No  
1—Yes  
Resets all ISU parameters to default values and  
resets the schedule to default. Retains only calendar  
settings and time.  
0
Screen Display  
0—Display Room Temperature  
1
2
—Display Setpoint  
—Display Both  
INSTALLER TESTS  
Test 1  
Installer Test  
Cool  
0
0
0—Off  
1—Cool Stage 1  
Only shown if system has cool stages.  
Only shown if system has fan.  
Test 2  
Installer Test  
Fan  
0—Off  
1—Fan Stage 1  
2
—Fan Stage 2  
3—Fan Stage 3  
Test 3  
Test 4  
Installer Test  
Heat  
0
0
0—Off  
1—Heat Stage 1  
Only shown if system has fan.  
Systems with 2 Heat stages will have option 2  
enabled for Installer Test 3.  
2—Heat Stage 2  
Installer Test EM  
Heat  
0—EM Heat Off  
1—EM Heat On  
Only shown if multi-stage HP is selected (heat pump  
with more heating than cooling stages).  
NOTE: Press the Done button to exit the Installer System Test.  
MAIN SCREEN  
DOWN BUTTON  
LOWERS TEMPERATURE SETTING OR  
MAKES SELECTIONS IN OTHER SCREENS  
SHOWS CURRENT  
DAY OF WEEK  
TEMPERATURE  
SETTING  
CURRENT  
TIME  
UP ARROW BUTTON  
RAISES TEMPERATURE SETTING OR  
MAKES SELECTIONS IN OTHER SCREENS  
Mon  
Set To  
Aux Heat On  
System Auto Fan Auto  
System & Fan  
Schedule  
System  
Fan Auto  
Clock & More  
Cool  
System & Fan  
Schedule  
Clock & More  
CURRENT  
SYSTEM SETTING  
INDICATES  
THERMOSTAT IS  
"
CALLING FOR  
SCHEDULE BUTTON  
SELECTS PROGRAMMING  
MODE  
COOL OR HEAT"  
CURRENT  
FAN SETTING  
CLOCK &  
M22317  
SYSTEM & FAN BUTTON  
SELECTS FAN AUTO OR ON  
SELECTS HEAT, OFF, COOL  
AND EM HEAT  
MORE BUTTON  
SELECTS TIME AND  
FURNACE FILTER  
INFORMATION  
Fig. 34. Main screen display.  
M22316  
Fig. 33. Main screen selections.  
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PROGRAMMING  
Table 7 shows default program settings.  
Table 7. Energy-saving Default Program Settings.  
Mon  
Tue  
Wed  
Thu  
Fri  
Setpoints  
Schedule  
Sat  
Sun  
Period  
Time  
8:00am  
10:00pm  
—
Heat  
70°F (21°C)  
55°F (10°C)  
—
Cool  
75°F (24°C)  
85°F (29.5°C)  
—
Select Day  
Occ1  
Next  
Step Cancel  
Unocc1  
Occ2  
Unocc2  
—
—
—
Fan Settings  
M22332  
Auto: Fan runs only when heating/cooling system is on.  
See the Fan Schedule section for more information.  
On: Fan runs continuously.  
Fig. 35. Initial schedule edit screen.  
6.  
OCCUPIED 1 flashes, denoting the period that is about  
to be edited.  
System Settings  
7
8
.
.
Press NEXT, and the start time for that period flashes.  
Change the start time by pressing the Up and Down  
arrow keys.  
Heat: Thermostat controls the heating system.  
Off: Both heating and cooling systems are off. Fan is turned  
off.  
9
1
.
Press NEXT to edit the heating and cooling setpoints.  
Cool: Thermostat controls the cooling system.  
Auto: Thermostat automatically changes between heat and  
cool operation, depending on indoor temperature.  
0. Continue to cycle through the remaining periods and  
make changes by pressing the NEXT key.  
DAYS  
SCHEDULE  
PERIOD  
HEAT OR COOL  
TEMPERATURES  
Programming Heating and Cooling Schedule  
SELECTED  
The thermostat can control up to four different schedule  
periods per day:  
UP ARROW  
CHANGES TIME  
AND  
OCC 1: Work arrival time. Period to keep space at a  
Period  
Mon  
Tue  
Wed  
Thu  
Fri  
Occupied1 Unocc1  
Occupied2 Unocc2  
comfortable temperature.  
UNOCC1: Work exit time. Period to keep space at an  
energy-saving temperature.  
AM  
TEMPERATURES  
OCC 2: Second occupied period.  
UNOCC2: Second unoccupied period.  
Go Back Next  
Done  
DOWN ARROW  
CHANGES TIME  
AND  
NOTE: Available schedule times are at 15-minute intervals.  
TEMPERATURES  
GO BACK KEY  
DONE KEY  
GOES BACK TO THE  
LAST SCHEDULE STEP  
Editing Schedule  
EXITS AND SAVES  
CHANGES MADE  
TO SCHEDULE  
1.  
2.  
3.  
4.  
Press MORE  
NEXT STEP KEY  
Press SCHEDULE.  
Press EDIT.  
ADVANCES PERIOD,TIME,  
HEAT AND COOL TEMPERATURES  
M23041  
Press SELECT DAY to select the days you wish to  
schedule.  
Press NEXT when finished selecting days  
Fig. 36. Screen to edit existing settings.  
5.  
1
1. When complete, press DONE. SAVING CHANGES  
appears on the screen to indicate changes are being  
saved to the day(s) modified.  
NOTES:  
—
—
Multiple days can be selected.  
To skip over a day, press the Up or Down arrow  
keys.  
Checkmarks appear next to selected days. These  
are scheduled with identical times and tempera-  
tures.  
12. To exit schedule without saving changes, press CANCEL  
any time.  
—
Setting Time  
1
2
3
.
.
.
Press CLOCK.  
Use arrows to set current time.  
Press DONE.  
IMPORTANT  
The current day of the week should already be set  
correctly. If not, see the Advanced Settings section to  
set the day.  
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sensor enabled, the thermostat screen system mode will lock  
on heat or cool (whatever the changeover sensor is  
communicating to the thermostat). If ISU #340 does not have a  
changeover sensor enabled, then the system mode from the  
thermostat screen can manually be adjusted between heat or  
cool. It follows the fan sequencing described above with ISU  
OPERATION  
Fan Sequence Operations (ISU 347, 348, 349)  
If heat pump or conventional application modes are enabled in  
ISU 170, then ISU 347 is not available for fan ramp algorithm.  
The fan operates as a default ON/AUTO selection that works  
the same way as our CommercialPRO TB7220 thermostat.  
There is only one fan relay output that is activated.  
347, 348, 349.  
2
pipe with reheat - 2 pipe modes do not contain the ability to  
have automatic changeover. They are manual changeover  
only. The thermostat will have a priority when choosing a  
system mode (heat or cool). When ISU #340 has a 2 pipe  
changeover sensor enabled, the thermostat screen system  
mode will lock on heat only. When the 2 pipe changeover  
sensor is sensing cool mode, the user can adjust to heating  
mode which will bring on the auxiliary heat. If ISU #340 does  
not have a changeover sensor enabled, then the system mode  
from the thermostat screen can manually be adjusted between  
heat or cool. It follows the fan sequencing described above  
with ISU 347, 348, 349.  
If PTAC or fan coil thermostat application modes are enabled in  
ISU 170, then ISU 347 fan ramp algorithm is available for  
installer setup selection. The fan ramp algorithm will  
automatically calculate the appropriate fan speed that is  
needed to meet the proportional band requirements to speed  
up setpoint satisfaction. When the setpoint is satisfied it will  
revert to the lowest fan speed setting to conserve energy.  
The thermostat comes factory default with the fan ramping  
algorithm enabled (ISU 347). This gives the user the ability to  
select Auto-Lo-Med-Hi option in ISU 348 or Auto only option in  
ISU 348. Auto sets the thermostat into the fan ramping  
algorithm mode and automatically sets the sufficient speed for  
PI control. Auto also automatically shuts the fan off when there  
is not a call for heating or cooling. If the user decides to disable  
ISU 347, then the fan will only have Lo-Med-Hi option  
available.  
Operating Sequence  
The thermostat energizes specific terminal(s), depending on  
the demand for heating, cooling or fan. The thermostat screen  
shows the time, inside temperature, system and fan selections.  
Additional indicators are shown when the heating, cooling or  
fan is energized. See Tables 8 and 9 for specification  
information.  
If ISU 347 is not enabled, then ISU 348 does not appear as a  
user selection choice.  
Table 8. Sequence of Operation for Conventional Systems.  
System  
Fan  
Energize  
Screen  
If ISU 347 is enabled, then ISU 349 is available as a selection  
choice. The user can select either a 2 hour or 4 hour timer fan  
reset function. The fan will reset from a constant on speed to  
Auto mode after the time period expires. If ISU 347 is not  
enabled, then ISU 349 does not appear as a user selection  
choice.  
Setting Setting Call for Action Terminals Message  
Off  
Auto  
Auto  
Auto  
—
—
—
—
Cool  
—
—
Cool  
or Auto  
Stage 1  
Cooling  
Y, G  
Cool On  
Heat  
Auto  
Auto  
—
—
—
Equipment Sequence Operations (ISU 170)  
Heat  
or Auto  
Stage 1  
Heating  
W, Gb  
Heat On  
Heat Pump and Conventional  
Heat Pump and conventional use a single fan speed. The  
single fan speed label is the G terminal relay output. Display on  
the thermostat for these modes will give the Fan On/Auto  
option. There is no fan ramping algorithm, ISU 347, 348, 349  
are not available.  
a
If Installer Setup System type is set to two stages of cooling.  
G energizes only if Installer Setup 0180 is set to Electric.  
b
Table 9. Sequence of Operation for Heat Pump Systems.  
PTAC  
System Fan  
Energize  
Screen  
PTAC modes 10 and 11 will have the same selection options  
available as the heat pump selection options. The only  
difference is that the PTAC options have a Lo and Hi speed fan  
output instead of single speed output and that it follows the fan  
sequencing described above with ISU 347, 348, 349.  
Setting Setting Call for Action Terminals Message  
Off  
Auto  
Auto  
—
O/Ba  
—
Cool  
Cool  
or Auto  
Stage 1 Cooling  
Y, G, O/Ba  
Cool On  
4
4
Pipe  
Heat  
Auto  
Auto  
—
O/Ba  
—
pipe is treated similar to 1H/1C conventional. It follows the  
fan sequencing described above with ISU 347, 348, 349.  
Y, G, O/Ba  
Heat  
or Auto  
Stage 1 Heating  
Heat On  
Stages 1 and 2  
Heating  
b
Auxiliary  
Heat On  
2
Pipe  
Y, W1 , G,  
O/Ba  
There are two different 2 pipe modes - 2 pipe only and 2 pipe  
with reheat.  
a
Configure O/B in Installer Setup. Based on last piece of  
equipment called (cooling = O; heating = B).  
b
If Installer Setup System Type is set to 2Heat/1Cool Heat  
Pump with Auxiliary Heat.  
2
pipe only - 2 pipe modes do not contain the ability to have  
automatic changeover. They are manual changeover only. The  
thermostat will have a priority when choosing a system mode  
(heat or cool). When ISU #340 has a 2 pipe changeover  
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Table 10. Sequence of Operations for Fan Coil Systems.  
System Setting  
Fan Setting  
Call for Action  
Energize Terminals  
Screen Message  
Off/Cool/Heat/Em Heat/Auto Auto  
--  
--  
Cool or Auto  
Auto  
4 Pipe Cooling  
b
b
b
Cool On  
Y, G , G2 , G3  
Y, G  
Cool or Auto  
Cool or Auto  
Cool or Auto  
Heat or Auto  
LO  
4 Pipe Cooling  
4 Pipe Cooling  
4 Pipe Cooling  
4 Pipe Heating  
Cool On  
Cool On  
Cool On  
Heat On  
MED  
HIGH  
Auto  
Y, G2  
Y, G3  
c
b
b
b
W1 , G , G2 , G3  
Heat or Auto  
Heat or Auto  
Heat or Auto  
Cool or Heat  
Cool or Heat  
Cool or Heat  
Cool or Heat  
Em Heat  
LO  
4 Pipe Heating  
4 Pipe Heating  
4 Pipe Heating  
c
Heat On  
W1 , G  
MED  
HIGH  
Auto  
LO  
c
Heat On  
W1 , G2  
c
Heat On  
W1 , G3  
Pipe Cooling/Heatinga  
Pipe Cooling/Heatinga  
Pipe Cooling/Heatinga  
Pipe Cooling/Heatinga  
a
b
b
b
Cool On or Heat On  
Cool On or Heat On  
Cool On or Heat On  
Cool On or Heat On  
Heat On  
2
2
2
2
Y , G , G2 , G3  
Ya, G  
MED  
HIGH  
Auto  
LO  
Ya, G2  
Ya, G3  
2 Pipe Call for Auxiliary Heat  
2 Pipe Call for Auxiliary Heat  
2 Pipe Call for Auxiliary Heat  
2 Pipe Call for Auxiliary Heat  
a
c
b
b
b
Y , W1 , G , G2 , G3  
Em Heat  
a
c
Heat On  
Y , W1 , G  
Em Heat  
MED  
HIGH  
a
c
Heat On  
Y , W1 , G2  
Em Heat  
a
c
Heat On  
Y , W1 , G3  
a
If Installer Setup (0170) System Type is set to 2 pipe Fan Coil (8) or 2 pipe Fan Coil w/Aux Heat (9), the Y terminal will be used  
for cooling and heating. If Installer Setup (0170) System Type is set to 4 pipe Fan Coil (7), the Y terminal will be used for cooling  
only.  
b
When fan is in AUTO, it automatically selects the fan speed based on how far away the temperature is from the setpoint.  
c
If Installer Setup (0170) System Type is set to 2 pipe Fan Coil with Auxiliary Heat (9), the W1 terminal will be used for reheat. If  
Installer Setup (0170) System Type is set to 4 pipe Fan Coil (7),the W1 terminal will be used for heating.  
Table 11. Sequence of Operations for PTAC Systems.  
System Setting  
Fan Setting  
Auto  
Call for Action  
Energize Terminals  
Screen Message  
Off/Cool/Heat/  
Em Heat/Auto  
--  
O/Bb  
--  
Cool or Auto  
Cool or Auto  
Cool or Auto  
Heat or Auto  
Heat or Auto  
Heat or Auto  
Em Heat  
Auto  
LO  
Stage 1 Cooling  
a
a
b
Cool On  
Cool On  
Cool On  
Heat On  
Heat On  
Heat On  
Heat On  
Heat On  
Heat On  
Y, G , G3 , O/B  
Stage1 Cooling  
Y, G, O/Bb  
HIGH  
Auto  
LO  
Stage 1 Cooling  
Y, G3, O/Bb  
Stage 1 Heating  
a
a
b
Y, G , G3 , O/B  
Stage 1 Heating  
Y, G, O/Bb  
HIGH  
Auto  
LO  
Stage 1 Heating  
Y, G3, O/Bb  
Stage 1 and 2 Heating  
Stage 1 and 2 Heating  
Stage 1 and 2 Heating  
c
a
a
b
Y, W1 , G , G3 , O/B  
Em Heat  
c
b
Y, W1 , G, O/B  
Em Heat  
HIGH  
c
b
Y, W1 , G3, O/B  
a
When the fan is in AUTO, it automatically selects the fan speed based on how far away the temperature is from the setpoint.  
Configure O/B in Installer Setup. Based on last piece of equipment called (cooling=O; heating=B).  
If Installer Setup (1070) System Type is set to 2Heat/1 Cool PTAC.  
b
c
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OVERRIDE  
Special Programmable Mode Functions  
Changes temperature setting until the next period takes effect.  
For use during Unoccupied periods.  
Installer Setup 160 allows the thermostat to be configured for  
either a mode with a programmable 7 day schedule or as a  
non-programmable thermostat.  
1.  
Press OVERRIDE. The settings change by default to the  
next Occupied period.  
Preoccupancy purge (ISU 185)  
NOTE: Changes are limited to those allowed by the  
lockout level.  
This feature is available only when the thermostat is configured  
as a programmable schedule and when a fan is used. The fan  
will run 1-3 hours before the occupied schedule starting time to  
circulate air.  
2.  
Press Up or Down arrow to change the override temper-  
ature, and NEXT to adjust override time.  
Override Button, Temporary Override (Duration Limit ISU  
HOLIDAY  
535)  
Changes temperature setting for a designated number of days.  
Press MORE and then HOLIDAY. The screen shows “Hold  
Until 1 DAYS”.  
While in the programmable schedule mode, an override button  
is available to perform temporary override control. The default  
override time can be configured through ISU 535. Lockout  
configuration via ISU 670 can provide restrictions on access to  
setpoint changes, system changes, and schedule changes.  
1.  
2.  
3.  
Press Up or Down arrow to change the temperature  
desired for the thermostat to override the schedule.  
Press NEXT to change the desired days for the duration  
of the holiday.  
No remote setback  
The remote setback feature only works in the non-  
programmable mode.  
To cancel the Holiday Override early, press CANCEL.  
Fan Status Displayed on Main Screen  
When the thermostat is running the fan, the fan blade symbol  
appears next to FAN to indicate the thermostat has the fan  
on.  
Special Non-Programmable Mode Functions  
Override (Optional)  
The override feature is optional in the non-programmable  
mode. The override can be configured through ISU 342. When  
the override is activated in the non-programmable mode it will  
temporarily override to a new setpoint until the end time  
expires.  
NOTE: If the thermostat is not controlling the fan—typical for  
many gas, forced-air heating systems—the fan blade  
symbol  
will not appear even though the fan may  
be running.  
Remote Setback  
Replacing Batteries  
Remote Setback is available (ISU 340). Occupancy sensors,  
manual time clock inputs, and DDC night setback can be used  
to provide inputs to setback the thermostat. Unoccupied  
heating (ISU 343) and unoccupied cooling (ISU 346) setpoints  
are available to configure the setback setpoints.  
Not all thermostat models require batteries. If the thermostat  
has batteries, a low battery warning (see Fig. 38) flashes on  
the main screen for approximately 30 days.  
NOTE:  
Setting Temperature Overrides  
—
If batteries are not replaced when the Low Battery  
warning is flashing, the LO batt screen displays  
continuously and the thermostat stops operating  
until batteries are replaced.  
The thermostat has a low battery indicator.  
However, it is recommended that the batteries be  
replaced once each year. Do this to prevent  
leakage and prevent the thermostat and HVAC  
system from shutting down due to lack of  
thermostat battery power.  
There are three temperature override options:  
—
—
—
Hold Temperature Until  
Override, and  
Holiday.  
—
HOLD TEMPERATURE UNTIL  
Holds the temperature temporarily until the time set by the  
user, or the next scheduled period time.  
1
.
.
Press the Up or Down arrow next to the temperature to  
adjust. The Hold Until time appears on the screen. The  
time defaults to the next scheduled period start time  
Press NEXT to adjust the time for the thermostat to  
resume schedule.  
2
NOTE: The installer setup can limit the length of time  
for an override to 1, 2, 3, or 4 hours beyond the  
current time.  
3
4
.
.
Press DONE or wait 5 seconds.  
Press CANCEL or SCHEDULE to cancel “Hold Tempera-  
ture Until” and resume the schedule.  
M22322  
Fig. 37. Low battery signal.  
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Replace the batteries as follows:  
NOTE: If connected to an installed remote indoor temperature  
sensor, the thermostat internal sensor is not used.  
1.  
Remove the thermostat from the base by pulling it  
straight out. (See Fig. 39.)  
2
.
Install two new AA alkaline batteries with proper polar-  
ization.  
ONE REMOTE INDOOR SENSOR INSTALLED  
If one remote indoor temperature sensor is used, the screen  
showing the Inside temperature reading displays the  
temperature at the indoor remote sensor location.  
NOTES:  
—
—
Always use AA alkaline batteries.  
All programming (Schedule, Date and Time)  
information is retained during battery replacement.  
MULTIPLE REMOTE INDOOR SENSORS INSTALLED  
If more than one remote indoor sensor is used, the screen  
showing the Inside temperature reading displays the average  
of all the remote indoor sensors.  
3
.
.
Place thermostat back on subbase by aligning terminal  
screw blocks with the pins on the back of the thermostat.  
(
See Fig. 40.)  
4
Push the thermostat straight onto the base.  
Screen Locked  
Portions of the touch screen interface can be fully or partially  
locked. See the Advanced Settings section for information to  
use these features. When the thermostat displays LOCKED,  
the buttons are either fully or partially locked.  
WALL  
Fully Locked Screen  
In this mode, the entire interface is locked and not functional.  
To unlock screen, see the Advanced Settings section. The  
screen continuously displays SCREEN LOCKED.  
Partially Locked Screen  
When partially locked:  
—
Pressing a locked key prompts the screen to indicate  
LOCKED for five to seven seconds.  
M23024  
— Pressing an unlocked key with LOCKED shown removes  
LOCKED from the display.  
—
HOLIDAY and OVERRIDE options are available in all partial  
lockout levels.  
Fig. 38. Removing thermostat from subbase.  
—
Pressing HOLIDAY sets the temperature to the Unoccupied  
setting for the selected period of time. The next Occupied  
period switches back to the program settings.  
Pressing OVERRIDE sets the temperature to the Occupied  
setting for the selected period of time. The next Unoccupied  
period switches back to the program settings.  
To cancel the temperature override and follow the  
programmed schedule, press CANCEL.  
WALLPLATE  
TERMINAL SCREW BLOCK  
—
—
PINS ON  
BACK OF  
THERMOSTAT  
PARTIAL LOCKOUT 1  
This mode locks out schedule and system changes.  
—
—
—
User can change the temperature setpoint and fan settings,  
but cannot change schedule or system settings.  
The temporary changes last until next scheduled period.  
The screen displays that time.  
To unlock the screen, see Advanced Settings section.  
PARTIAL LOCKOUT 2  
This mode locks out schedule, system and fan changes.  
M22299  
—
—
—
User can change the temperature setpoint, but cannot  
change schedule, system, or fan settings.  
The temporary temperature change lasts until next  
scheduled period. The screen displays that time.  
To unlock the screen, see Advanced Settings section.  
Fig. 39. Placing thermostat back onto subbase.  
Reading Remote Indoor Temperature  
If connected to an installed remote indoor temperature sensor,  
the thermostat displays the indoor temperature from the  
remote sensor(s).  
PARTIAL LOCKOUT 3  
This mode locks out schedule, system, fan, and temperature  
setpoint settings.  
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—
Users cannot make changes to the temperature setpoint or  
any schedule, system, or fan settings.  
The only features available are HOLIDAY and OVERRIDE.  
To unlock the screen, see Advanced Settings section.  
The C7189U can be used to provide one remote sensor input  
or as a temperature averaging network with multiple TR21  
Sensors connected, as shown in Fig. 28.  
—
—
Checkout  
Temperature Recovery  
For best results, allow C7189U Wall Mount Temperature  
Sensor to absorb the air moving through the room for a  
minimum of twenty minutes before taking a resistance  
measurement.  
The thermostat is equipped with a feature to eliminate  
guesswork when setting a schedule. That is, the user need not  
know the amount of time for the HVAC system to bring the  
space to temperature (without overshoot) prior to the  
scheduled time.The thermostat manages that automatically.  
With an accurate thermometer (±1°F [0.5°C]) measure the  
temperature at the sensor location, allowing time for the  
thermometer to stabilize before reading.  
Simply set the program schedule to the desired time to have  
the space at comfort temperature. In addition, program the  
temperature to this comfort temperature. The thermostat  
activates the heating or cooling at the proper time to reach the  
scheduled temperature at the scheduled time.  
To verify sensor resistance, remove one wire from one of  
C7189U wiring terminals. Use an ohmmeter to measure the  
resistance across the sensor. Then compare sensor accuracy  
with the temperature/resistance curve in Fig. 40.  
NOTE: The setpoint changes gradually to use economical  
stages and avoid overshoot.  
2
20K  
For example—the space will be occupied at 8:00 AM and the  
desired temperature is 70°F. Set the OCC 1 period for 8:00 AM  
and 70°F. The thermostat turns on the heat prior to 8:00 AM to  
raise the temperature to 70°F by 8:00 AM.  
190K  
1
60K  
30K  
1
The thermostat provides an alert that the heating or cooling  
system is coming on before a scheduled time by displaying  
100K  
“
Recovery” on the screen.  
9
0K  
0K  
6
Minimum-Off Timer Compressor Protection  
The thermostat has an adjustable Minimum-Off Timer that can  
be set from zero to five minutes (Factory Setting—five  
minutes). The Minimum-Off Timer can be bypassed through  
the Installer System Test or it can be bypassed permanently by  
setting the Minimum-Off Timer to 0 minutes in the Installer  
Setup. The Minimum-Off Timer is activated after the  
compressor turns off:  
10K OHM AT  
3
0K  
o o  
7 F (25 C)  
7
0K  
-20  
0
20  
40  
60  
20  
80  
30  
100 120 o  
F
o
-
-
40  
40 -30 -20 -10  
0
10  
40 50 C  
M22823  
TEMPERATURE (DEGREES)  
—
If the thermostat is system powered (common wire), the  
Minimum-Off Timer is also activated upon initial startup and  
after power interruptions.  
If there is a call for cooling or heating during the Minimum-  
Off Time, the thermostat displays “Wait.”  
When the Minimum Off Timer expires, “Cool On” or “Heat  
On” (heat pumps only)” appears solidly in the display and  
the compressor and fan turn on.  
Fig. 40. 10K ohm sensor resistance versus temperature.  
TR21 Remote Temperature Sensor  
Operation  
When installed with Thermostat ISU 0340 set to 3 or 4, the  
remote inside temperature is displayed on the Thermostat  
Home Screen as Inside Temperature. The thermostat internal  
temperature sensor is not used.  
—
—
Temperature Sensor Operation and Checkout  
Allow outdoor or indoor temperature sensor to absorb the air  
for a minimum of five minutes before taking a reading. See the  
Sensor instructions for more information.  
The TR21 can be used to provide one remote sensor input or  
as a temperature averaging network with multiple TR21  
Sensors connected, as shown in Fig. 25 through 27.  
NOTE: The C7189U, TR21 and TR21-A Temperature  
Sensors are calibrated at the factory and cannot  
be recalibrated in the field.  
Checkout  
For best results, allow TR21 Wall Mount Temperature Sensor  
to absorb the air moving through the room for a minimum of  
twenty minutes before taking a resistance measurement.  
C7189U Remote Indoor Temperature Sensor  
With an accurate thermometer (±1°F [0.5°C]) measure the  
temperature at the sensor location, allowing time for the  
thermometer to stabilize before reading.  
Operation  
When installed with Thermostat ISU 0340 set to 3, the remote  
inside temperature is displayed on the Thermostat Home  
Screen as Inside Temperature. The thermostat internal  
temperature sensor is not used.  
To verify sensor resistance, remove one wire from one of the  
wiring terminals. Use an ohmmeter to measure the resistance  
across the sensor. Then verify the sensor accuracy with the  
temperature/resistance in Fig. 41.  
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80K  
70K  
60K  
50K  
40K  
30K  
20K  
2
7
0K OHM AT  
o o  
7 F (25 C)  
1
0K  
3
0
0
40  
50  
10  
60  
70  
20  
80  
90  
100 110 o  
F
o
30  
40  
C
TEMPERATURE (DEGREES)  
M5874A  
Fig. 41. 20K ohm sensor resistance versus temperature.  
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TROUBLESHOOTING (TABLE 12)  
Table 12. Troubleshooting.  
Possible Cause  
Symptom  
Action  
Display does not come on.  
Thermostat is not being powered.  
Check for 24 Vac between C and Rc.  
Check that AAA batteries are installed correctly  
and are good.  
Temperature settings do not  
change.  
The upper or lower temperature limits were Check temperature setpoints.  
reached. Check ISU 0600 and 0610; modify as needed.  
The keypad is fully locked.  
Check ISU 0670 to change keypad locked  
options.  
Heating or cooling does not come Thermostat minimum off-time is activated. Wait up to five minutes for the system to respond.  
on.  
System selection is not set to Heat or Cool. Set system Selection to correct position.  
System type Selection is incorrect.  
Check ISU 0170 and make sure correct System  
type is chosen.  
Thermostat is calling for Heat  
Heat on) or Cool (Cool on) but  
no heating or cooling is running.  
Heating or cooling equipment is not  
operating.  
Check wiring.  
Check ISU 0170 and make sure correct system  
type is chosen.  
Verify operation of equipment in System Test  
mode.  
(
Heat does not turn on (Heat On is Heating equipment failure.  
solid in the display).  
Check for 24 Vac at the equipment on the  
secondary side of the transformer between power  
and common. If voltage is not present, check the  
heating equipment to find the cause of the  
problem.  
Check for 24 Vac between the heat terminal (W)  
and transformer common. If 24 Vac is present, the  
thermostat is functional. Check the heating  
equipment to find the cause of the problem.  
Loose or broken wire connection between Check for 24 Vac between the heat terminal (W)  
thermostat and heating equipment.  
and transformer common. If voltage is not  
present, check wire connection (loose or broken)  
between the thermostat and the heating  
equipment.  
Cooling does not turn on (Cool  
On is solid in the display).  
Cooling equipment failure.  
Check for 24 Vac at the equipment on the  
secondary side of the transformer between power  
and common. If voltage is not present, check the  
cooling equipment to find the cause of the  
problem.  
Check for 24 Vac between the cool terminal (Y)  
and transformer common. If 24 Vac is present, the  
thermostat is functional. Check the cooling  
equipment to find the cause of the problem.  
Loose or broken wire connection between Check for 24 Vac between the cool terminal (Y)  
thermostat and cooling equipment.  
and transformer common. If voltage is not  
present, check the wire connection (loose or  
broken) between the thermostat and the cooling  
equipment.  
Fan does not turn on in a call for Fan Control in Heating is set to System  
heat (electric furnace). Controls Fan (Setting 0180).  
Set Fan Control in Heating to Thermostat  
Controls Fan (Setting 0180).  
Heat pump puts out cool air in the Changeover Valve (ISU 0190) is not  
Set Changeover Valve (ISU 0190) to match the  
changeover required by the installed heat pump.  
heat mode and warm air in the  
configured to match the changeover  
cool mode.  
required by the installed heat pump.  
Both the heating and cooling  
equipment are running at the  
same time.  
The heating equipment is not a heat pump Set System Type (ISU 0170) to match the  
but the System Type (ISU 0170) is set to installed heating and/or cooling equipment.  
Heat Pump.  
Heating and cooling wires are shorted  
together.  
Separate the shorted heating and cooling wires.  
23  
63-2675—03  
href="
TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT  
Table 12. Troubleshooting. (Continued)  
Symptom  
Heating equipment is running in Heating equipment is not a heat pump but Set System Type (ISU 0170) to match the  
installed heating and/or cooling equipment.  
Possible Cause  
Action  
the cool mode.  
System Type (ISU 0170) is set to Heat  
Pump.  
Heating equipment does not turn Heating equipment is not a heat pump but Set System Type (ISU 0170) to match the  
off and heat temperature setting System Type (ISU 0170) is set to Heat  
is set below room temperature Pump.  
Heat On is not in the display).  
installed heating and/or cooling equipment.  
(
Cannot set the system setting to System Type (ISU 0170) is set to Cool  
Heat. Only.  
Set System Type (ISU 0170) to match the  
installed heating and/or cooling equipment.  
Cannot set the system setting to System Type (ISU 0170) is set to Heat  
Set System Type (ISU 0170) to match the  
installed heating and/or cooling equipment.  
Cool.  
Only or Heat Only with Fan.  
Heat On is not in the display.  
System setting is not set to Heat and/or  
temperature setting is not set above room temperature setting above the room temperature.  
temperature.  
Set the system setting to Heat and set the  
Cool On is not in the display.  
Wait is in the display.  
System setting is not set to Cool and/or the Set the system setting to Cool and set the  
temperature setting is not set below room temperature setting below the room temperature.  
temperature.  
Compressor minimum off timer is active.  
Wait up to five minutes for the cooling or heating  
heat pump) equipment to turn on.  
(
“
Screen Locked” appears on the The keypad is fully or partially locked.  
Check ISU 0670 to change keypad locked  
options.  
screen and all or some of the  
keys do not respond.  
Perchlorate Material  
This thermostat contains a Lithium battery which may contain  
Perchlorate material.  
The following statement is required:  
Perchlorate Material—special handling may apply.  
See www.dtsc.ca.gov/hazardouswaste/perchlorate  
Automation and Control Solutions  
Honeywell International Inc.  
985 Douglas Drive North  
Honeywell Limited-Honeywell Limitée  
1
35 Dynamic Drive  
Golden Valley, MN 55422  
customer.honeywell.com  
Toronto, Ontario M1V 4Z9  
®
©
U.S. Registered Trademark  
2011 Honeywell International Inc.  
6
3-2675—03 M.S. Rev. 03-11  
Printed in U.S.A.  

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