Honeywell Tradeline T7300F series 2000 User manual

® U.S. Registered Trademark
© 1998 Honeywell International Inc. • • All Rights Reserved
INSTALLATION INSTRUCTIONS
62 012 3
62-0125—3
T7300F Series 2000 Commercial
Microelectronic Conventional
or Heat Pump Thermostat
APPLICATION
The T7300F Thermostat provides electronic control of 24
Vac commercial single zone heating, ventilating and air
conditioning (HVAC) equipment. When used with a
Q7300A,G,L Subbase, the thermostat is automatically
configured for conventional heat/cool applications. When
used with a Q7300H Subbase, the thermostat is configured
for conventional or heat pump applications, depending on
subbase model. When used with a Q7300C,D Subbase,
the thermostat is automatically configured for heat pump
applications. The T7300F is also field configurable for
automatic or manual changeover between heating and
cooling. The system and fan selections are made by
keyboard entry. All T7300F Thermostats require a common
wire to supply power.
RECYCLE NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of the old thermostat.
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
the instructions can damage the product or cause
a hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out the product operation.
Mount Thermostat on Subbase
The thermostat mounts on the subbase after it is
installed.
1. Engage tabs at the top of thermostat and subbase.
See Fig. 1.
2. Press lower edge of case to latch.
NOTE: To remove the thermostat from the wall, first pull
out at the bottom of the thermostat; then
remove the top.
Fig. 1. Mount thermostat on subbase.
SETTINGS
Using Thermostat Keys
The thermostat keys are used to:
• set current time and day,
• program times and setpoints for heating and cooling,
• override the program temperatures,
• display present setting,
• set system and fan operation,
• configure Installer Setup,
• check Installer System Test
See Fig. 2 for key information.
M4824A
B. PRESS LOWER EDGE OF CASE TO LATCH.
A. ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE.

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
62-0125—3 2
Fig. 2. Thermostat key locations and descriptions.
Set System and Fan (select models)
The system default setting is Heat. The fan default is set
so the fan operates continuously in Occupied and
Recovery mode and with the heating or cooling
equipment in Unoccupied mode. Use the System and
Fan keys to change the settings.
The system settings are:
Em Heat (Q7300C,D and H heat pump models):
Emergency heat relay is on continuously. Thermo-
stat cycles highest stage of heat. Cooling system is
off. Compressor is de-energized.
Heat: Thermostat controls the heating.
Off: Both the heating and cooling are off.
Cool: Thermostat controls the cooling.
Auto: Thermostat automatically changes between
heating and cooling operation depending on the
indoor temperature.
The fan settings are:
On: Fan operates continuously.
Auto: Equipment controls the fan in the Unoccupied
mode. The Intelligent Fan™ operation (Installer
Setup number 17) offers three choices for the fan
operation in Occupied mode:
—fan turns on only when there is a call for heating
or cooling,
—fan operates continuously in Occupied mode,
—fan is on continuously in Occupied and recovery
modes.
Set Temperature
Refer to Table 1 for the default temperature setpoints.
See Owners Guide form number 63-4356 for complete
instructions on changing the setpoints.
Table 1. Default Temperature Setpoints.
INSTALLER SETUP
NOTE: For most applications, the thermostat factory-
settings do not need to be changed. Review the
factory-settings in Table 2 and if no changes are
necessary, go to the Installer System Test sec-
tion.
The Installer Setup is used by the installer to customize
the thermostat to specific systems. Installer Setup
numbers are listed in Table 2. The table includes all the
configuration options available.
A combination of key presses are required to use the
Installer Setup feature.
— To enter the Installer Setup, press and hold the Heat/
Cool Settings key with both the increase ∆and ∇
decrease keys until the first number is displayed. All
display segments appear for approximately three
seconds before the number is displayed. See Fig. 3
and 4.
Fig. 3. LCD display of all segments.
Set Program Set Temperature Change
Time/Temp
Occupied
Temp
Unoccupied
Start Time Day
System Fan
Copy
Occupied
Start Time
Run
Program
Temporary
Occupied
Continuous
Unoccupied
Set Current
Day/Time
Clear
Start Time
Unoccupied
Temp
Heat/Cool
Settings
Auto
System Fan
Mon
Room
AM
Occupied
Heat
M10233A
SET OVERRIDE
TEMPERATURE
OFFSET AND
ACTIVATE
TEMPORARY
OVERRIDE
ENTER HOLD MODE SET CURRENT
DAY AND TIME
CLEAR PROGRAM PERIOD COPY ONE
PROGRAMMED DAY
TO ANOTHER DAY
SELECT FAN
OPERATION
SELECT
SYSTEM
OPERATION
CHANGE BETWEEN HEATING
AND COOLING SETPOINTS
AND SCROLLS BACKWARDS
THROUGH INSTALLER SETUP
NUMBERS AND SYSTEM TEST
DECREASE
TEMPERATURE
OR TIME SETTING
INCREASE
TEMPERATURE
OR TIME SETTING
SET UNOCCUPIED TEMPERATURE
SETPOINTS AND SCROLLS
THROUGH INSTALLER SETUP
AND SYSTEM TEST
SET OCCUPIED
TEMPERATURE
SETPOINTS
SET CURRENT DAY OR
PROGRAM DAY
ENTER UNOCCUPIED
PROGRAM MODE
ENTER OCCUPIED
PROGRAM MODE
RETURNS TO
NORMAL
OPERATIONS
Control Occupied Unoccupied
Heating 70°F (21°C) 55°F (13°C)
Cooling 78°F (25.5°C) 90°F (32°C)
Heat
Auto
System Fan
O
f
f
Un
Mon
Wait
Lo
In
Room
Remote
%Humid
Auto
Sav
AM
PM
Comm
Cool
Duct
Only
On
Recovery
Hi
Med
Tue
Wed
Th
u
Fri
S
a
t
S
u
n
Occu
p
ie
d
1
2
O
verrid
e
M4916
Aux Ht
Aux Ht
Em Ht
Em Ht
Set Program
Set Program
Set Day/Time
Set Day/Time
Start Time Temporary Setting Enrg
Em Heat

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
3 62-0125—3
Fig. 4. Installer Setup number and setting display.
— To advance to the next Installer Setup number, press
the Unoccupied Temp key.
— To return to a previous Installer Setup number, press
the Heat/Cool Settings key.
— To change a setting, use the increase ∆or ∇decrease
key.
— To exit the Installer Setup, press the Run Program
key. The Installer Setup is automatically exited if no
key presses are made for four minutes.
Installer Setup numbers are listed in Table 2.
CAUTION
Possible equipment damage.
Fan must be running when system is
operating or equipment damage can result.
Heat pump and electric heat systems must be
configured in Installer Setup 2 to prevent
equipment damage caused by the system from
running without the fan.
IMPORTANT
Only configurable numbers are shown on the
device. Example: If thermostat does not have a
system key, Installer Setup Number 12 will not
be displayed. Review Table 2 factory-settings
and mark any desired changes in the Actual
Setting column. When Installer Setup is com-
plete, review the settings to confirm that they
match the system.
M10238B
INSTALLER SETUP
NUMBER DISPLAY
(COLUMN 2
OF TABLE 2
)
FACTORY SETTING
OR OTHER CHOICE
DISPLAY (COLUMN 3
OR 5 OF TABLE 2
)
Table 2. Thermostat Installer Setup Options
Select
Installer Setup
Number
(Press
Unoccupied
Temp Key to
change)
Factory Setting
Other Choices
(Press ∆or ∇key to change)
Actual
SettingDisplay Description Display Description
Not used. 1 — — — — —
Fan operation
a
. 2 0 Conventional
applications where
equipment controls fan
operation in heat
mode.
1 Electric heat applications
where thermostat controls
fan operation in heat mode.
Output stages
of heating.
3 Depends
on
subbase.
Stages of heat. 0, 1, 2,
or 3
0—No heating.
1—One stage of heat.
2—Two stages of heat.
3—Three stages of heat.
Heating cycle
rate.
4 4 Stage 1—4 cph. 3, 6, 8
or 9
3—3 cph used for hot
water systems or high
efficiency furnaces.
5 4 Stage 2—4 cph. 6—6 cph used for
conventional systems.
6
4 Stage 3—4 cph. 8—8 cph used for
conventional systems.
7 4 Emergency heat relay
is on continuously.
Highest stage of heat
cycles at 4 cph
(Q7300C,D,H [heat
pump models only]).
9—9 cph used for electric
heat systems.
Output stages
of cooling.
8 Depends
on
subbase.
Stages of cooling. 0, 1, 2
or 3
0—No cooling.
1—One stage of cool.
2—Two stages of cool.
3—Three stages of cool.
Cooling cycle
rate.
9
10
11
Stage 1—4 cph. 3 3—3 cph.
4⎯4 cph.Stage 2—4 cph.
Stage 3—4 cph.
a
Number 2 must be set to 1 to extend fan operation.
b
Number 22 must be set to 1 and remote sensor(s) must be installed.

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
62-0125—3 4
System setting
adjustment
(models with
System key).
12 Depends
on
model.
System selection. 0, 1 or 2 0—System setting key is
operational.
1—Auto setting is disabled.
2—Auto only setting.
Not used. 13 — — — — —
Degree
temperature
display.
14 0 Temperature is
displayed in °F.
1 Temperature is displayed
in °C.
Displaying
temperature.
15 0 Temperature is
displayed.
1 Temperature is not
displayed.
Clock format. 16 0 12-hour clock format. 1 24-hour clock format.
Intelligent
Fan™
operation.
17 2 Fan operates
continuously in
Occupied and
Recovery mode. Fan
operates with call for
heating or cooling in
Unoccupied mode.
0 or 1 0—Fan only operates with
calls for heating or cooling
in Occupied and
Unoccupied modes.
1—Fan operates
continuously in Occupied
mode. Fan operates with
calls for heating or cooling
in Unoccupied mode.
Auxiliary
Contact
Operation.
18 0 0⎯Time-of-day
contacts.
1 1—Economizer contacts.
Extended fan
operation in
heating
a
.
19 0 No extended fan
operation after the call
for heat ends.
1 Fan operation is extended
90 seconds after the call for
heat ends.
Extended fan
operation in
cooling.
20 0 No extended fan
operation after the call
for cool ends.
1 Fan operation is extended
90 seconds after the call for
cool ends.
Fan key adjust-
ment (models
with Fan key).
21 0 Fan setting key is
operational.
1 Fan setting key is Auto
only.
Remote
sensing.
22 0 Remote sensing not
activated.
1 Remote sensing activated.
Temperature
averaging
network
b
.
23 0 Temperature averaging
disabled.
1 Temperature averaging
between local sensor and
remote sensor(s) activated.
Not used. 24 — — — — —
Keypad lockout
level (keypad
lockout is
enabled and
disabled by dip
switch 1 on
back of
thermostat).
25 0 No lockout. 1 or 2 1—Lockout all keys on
thermostat except system
and fan settings, temporary
setpoint, clock and day
adjustments.
2—Lockout all keys except
set Current Day/Time,
increase ∆and decrease ∇
keys.
3⎯Lockout all keys except
temporary occupied, Set
Current Day/Time (for
clock, day adjustments).
Duration of
temporary
override.
26 3 3—Three hour
override.
1, 8 or
12
1—One hour override.
8—Eight hour override.
12—Twelve hour override.
Not used. 27 thru 29 — — — — —
Table 2. Thermostat Installer Setup Options (Continued)
Select
Installer Setup
Number
(Press
Unoccupied
Temp Key to
change)
Factory Setting
Other Choices
(Press ∆or ∇key to change)
Actual
SettingDisplay Description Display Description
a
Number 2 must be set to 1 to extend fan operation.
b
Number 22 must be set to 1 and remote sensor(s) must be installed.

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
5 62-0125—3
Deadband. 30 2 Heating and cooling
setpoints can be set no
closer than 2°F
(1.1°C).
3 thru
10
Heating and cooling
setpoints can be set no
closer than the chosen
value:
3—3°F (1.7°C)
4—4°F (2°C)
5—5°F (2.5°C)
6—6°F (3°C)
7—7°F (3.5°C)
8—8°F (4°C)
9—9°F (4.5°C)
10—10°F (5°C)
Interstage
control point
(Q7300C,D
only).
31 0 Disabled. 1 thru
12
Temperature has to change
more than the chosen
value before the system
calls for the next stage.
(Example: 68°F (20°C) is
the heat setpoint, 2°F
(1.1°C) is the interstage
setting, temperature is
65.5°F (18.5°C), the
second stage turns on,
brings the temperature to
66°F (19°C) and turns off.
The heat pump continues
to run until the setpoint is
met.)
Minimum on-
time.
32 2 2-minute minimum on-
time for heating and
cooling.
0 or 1 No minimum on-time or
1-minute minimum on-time
for heating and cooling.
Minimum off-
time for the
compressor.
33 4 4-minute minimum off-
time for the
compressor.
0, 1, 2,
3 or 5
Minimum number of
minutes (0 thru 5) the
compressor will be off
between calls for the
compressor.
Temperature
range stops in
heating.
34 90 Highest setpoint for
heating.
40 to 89 Temperature range (1°F
[0.6°C] increments) for
heating setpoint.
Temperature
range stops in
cooling.
35 45 Lowest setpoint for
cooling.
46 to 99 Temperature range (1°F
[0.6°C] increments) for
cooling setpoint.
Not used. 36 — — — — —
Table 2. Thermostat Installer Setup Options (Continued)
Select
Installer Setup
Number
(Press
Unoccupied
Temp Key to
change)
Factory Setting
Other Choices
(Press ∆or ∇key to change)
Actual
SettingDisplay Description Display Description
a
Number 2 must be set to 1 to extend fan operation.
b
Number 22 must be set to 1 and remote sensor(s) must be installed.

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
62-0125—3 6
IMPORTANT
Review the settings to confirm that they match
the system. Press Run Program to exit the
Installer Setup. Be sure to set the current day
and time immediately.
Set Current Day and Time
1. Press Set Current Day/Time.
NOTE: On initial power up or after an extended
power loss, 1:00 pm flashes on the LCD
until a key is pressed.
2. Press Day until the current day is displayed.
NOTE: Sun=Sunday, Mon=Monday, Tue=Tues-
day, Wed=Wednesday, Thu=Thursday,
Fri=Friday, Sat=Saturday.
3. Press increase ∆or decrease ∇until the current
time is displayed.
NOTE: Tapping the Set Current Day/Time will
change the time in one hour increments.
4. Press Run Program.
Temperature
display
adjustment.
37 0 No difference in
displayed temperature
and actual room
temperature.
1 thru 6 1—Display adjusts to 1°F
(0.6°C) higher than actual
room temperature.
2—Display adjusts to 2°F
(1.1°C) higher than actual
room temperature.
3—Display adjusts to 3°F
(1.7°C) higher than actual
room temperature.
4—Display adjusts to 1°F
(0.6°C) lower than actual
room temperature.
5—Display adjusts to 2°F
(1.1°C) lower than actual
room temperature.
6—Display adjusts to 3°F
(1.7°C) lower than actual
room temperature.
Minimum off-
times in
heating.
38 4 4—4-minute minimum
off-time.
0, 1, 2,
3, or 5
Minimum number of
minutes (0 thru 5) the
heating equipment will be
off between calls for heat.
Not used 39 — — — — —
Installer Setup
lockout
(keypad
lockout is
enabled and
disabled by dip
switch 1 on
back of
thermostat).
40 0 0—No Installer Setup
lockout.
1 1—Installer Setup lockout
activated.
Table 2. Thermostat Installer Setup Options (Continued)
Select
Installer Setup
Number
(Press
Unoccupied
Temp Key to
change)
Factory Setting
Other Choices
(Press ∆or ∇key to change)
Actual
SettingDisplay Description Display Description
a
Number 2 must be set to 1 to extend fan operation.
b
Number 22 must be set to 1 and remote sensor(s) must be installed.
M4951C
Set Current
Day/Time SetProgram Set Temperature Change
Time/Temp
Occupied
Temp
Unoccupied
StartTime Day
System Fan
Copy
Occupied
StartTime
Run
Program
Temporary
Occupied
Continous
Unoccupied
SetCurrent
Day/Time Clear StartTime
Unoccupied
Temp
Heat/Cool
Settings
Mon
PM
Set Day/Time
M4952C
SetProgram Set Temperature Change
Time/Temp
Occupied
Temp
Unoccupied
StartTime Day
System Fan
Copy
Occupied
StartTime
Run
Program
Temporary
Occupied
Continous
Unoccupied
SetCurrent
Day/Time
Clear
StartTime
Unoccupied
Temp
Heat/Cool
Settings
Day PM
Tue
Set Day/Time
M4953C
SetProgram Set Temperature Change
Time/Temp
Occupied
Temp
Unoccupied
StartTime Day
System Fan
Copy
Occupied
StartTime
Run
Program
Temporary
Occupied
Continous
Unoccupied
SetCurrent
Day/Time
Clear
StartTime
Unoccupied
Temp
Heat/Cool
Settings
PM
Tue
Set Day/Time
M4954B
SetProgram Set Temperature Change
Time/Temp
Occupied
Temp
Unoccupied
StartTime Day
System Fan
Copy
Occupied
StartTime
Run
Program
Temporary
Occupied
Continous
Unoccupied
SetCurrent
Day/Time
Clear
StartTime
Unoccupied
Temp
Heat/Cool
Settings
Auto
System Fan
Mon
Room
AM
Occupied 1
Heat
Run
Program

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
7 62-0125—3
INSTALLER SYSTEM TEST
Use the Installer System Test to check the thermostat
configurations and operation. Refer to Table 3 for a list of
the available system tests.
Table 3. Installer System Tests.
To start the system test:
CAUTION
Possible Equipment Damage.
Equipment damage can result if compressor
is cycled too quickly.
The minimum off time for compressors is
bypassed during the Installer System Test.
Press and hold the increase ∆and ∇decrease keys, at
the same time, until 10 appears. All segments of the LCD
are displayed for three seconds before 10 appears. See
Fig. 5 and 6.
Fig. 5. LCD Display of all segments.
Fig. 6. Test number display.
NOTE: If a duct temperature sensor is installed, the
duct temperature is also displayed.
Refer to Table and Thermostat Information section for
directions and results of the specific system tests.
NOTE: Press Run Program to exit the system test. The
system test times out after four minutes without
any key presses.
Test
Number System Test Description
10 to 19 Heating equipment can be turned on and off.
20 to 29 Emergency heat (Q7300C,D,H [heat pump
models only]) equipment can be turned on
and off.
30 to 39 Cooling equipment can be turned on and off.
40 to 49 Fan equipment can be turned on and off.
60 0 to
60 19
Keyboard keys test.
70 to 79 Thermostat information including date code,
software versions and subbase identification
are displayed.
Heat
Auto
System Fan
O
f
f
Un
Mon
Wait
Lo
In
Room
Remote
%Humid
Auto
Sav
AM
PM
Comm
Cool
Duct
Only
On
Recovery
Hi
Med
Tue
Wed
Th
u
Fri
S
a
t
S
u
n
Occu
p
ie
d
1
2
O
verrid
e
M4916
Aux Ht
Aux Ht
Em Ht
Em Ht
Set Program
Set Program
Set Day/Time
Set Day/Time
Start Time Temporary Setting Enrg
Em Heat
M10257A
TEST NUMBER
Table 4. Installer System Test Options
Key to Press
Test
Number Description
Heating Equipment System Test
Heat/Cool Settings 10 Enter heating equipment system test.
∆11 Stage-one heat turns on. The system fan is also energized.
∆12 Stage-two heat turns on. Stage-one heat and system fan remain on.
∆13 Stage-three heat turns on. Stage-one and stage-two heat with the system fan
are on.
∇12 Stage-three heat turns off.
∇11 Stage-two heat turns off.
∇10 Stage-one heat and system fan turn off.
Emergency Heating Equipment System Test (Q7300C,D,H [heat pump models only]).
Heat/Cool Settings 20 Change from heating to emergency heating equipment system test.
∆21 Emergency heat and system fan turn on.
∆22 Highest stage heat turns on.
∇21 Highest stage heat turns off.
∇20 Emergency heat turns off.

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
62-0125—3 8
Thermostat Information
1. Press the Heat/Cool Settings key to access the
thermostat information.
2. Press the increase ∆ key to display the production
date code. The first two large digits are the month
and the third digit is the last digit of the year.
(Example: 036 = March 1996.)
3. Press the increase ∆ key again to display the soft-
ware identification code. (Example: 02 = software
ID code 2.)
4. Press the increase ∆ key again to display the soft-
ware revision number. (Example: 001 = revision
number 1.)
Cooling Equipment System Test
Heat/Cool Settings 30 Change from heating or emergency heating to cooling equipment system test.
∆31 Stage-one cooling and system fan turn on.
∆32 Stage-two cool turns on. Stage-one cool and system fan remain on.
∆33 Stage-three cool turns on (Q7300G only). Stage-one and stage-two cool with
system fan remain on.
∇32 Stage-three cool turns off.
∇31 Stage-two cool turns off.
∇30 Stage-one cool and system fan turn off.
Fan Equipment System Test
Heat/Cool Settings 40 Change from cooling to fan equipment system test.
∆41 Fan turns on.
∇40 Fan turns off.
Key Operation System Test
Heat/Cool Settings 60 2 Change from fan to key operation system test.
Unoccupied Temp 60 0 Unoccupied Temp test number is displayed.
Occupied Temp 60 1 Occupied Temp test number is displayed.
∆60 3 Increase test number is displayed.
∇60 5 Decrease test number is displayed.
Clear Start Time 60 7 Clear Start Time test number is displayed.
Day 60 8 Day test number is displayed.
Copy 60 9 Copy test number is displayed.
Unoccupied Start TIme 60 10 Unoccupied Start Time test number is displayed.
System
(select models)
60 11 System test number is displayed.
Fan (select models) 60 12 Fan test number is displayed.
Set Current Day/Time 60 14 Set Current Day/Time test number is displayed.
Run Program 60 15 Run Program test number is displayed.
Temporary Occupied 60 16 Temporary Occupied test number is displayed.
Occupied Start Time 60 17 Occupied Start Time test number is displayed.
Continuous
Unoccupied
60 19 Continuous Unoccupied test number is displayed.
Table 4. Installer System Test Options (Continued)
Key to Press
Test
Number Description
M4934
M4931
M4932
A
M10229

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
9 62-0125—3
5. Press the increase ∆ key again to display the
EEPROM identification code. (Example: 314 =
EEPROM ID 314.
6. Press the increase ∆key again to display the sub-
base identification code. (Example: HP = heat
pump subbase.)
7. Press Run Program to exit the system test mode.
The system test times out after four minutes with-
out any key presses.
Set Keypad Lockout Switch
The dip switch 1 on the back of the thermostat activates
the lockout features. The switch must be set to the ON
position (up) to activate the lockout feature. See Fig. 7.
The factory-setting is off (down). Remove the thermostat
from the subbase and set the switch to ON if keypad
lockout is desired. The level of lockout is determined by
the Installer Setup numbers 25 and 40.
Fig. 7. Set keypad lockout dip switch 1 on back of
thermostat.
NOTE: If changing Installer setup number 25 or 40, set
dip switch 1 to ON prior to entering Installer
setup.
M4933
A
M10290
ON
12
M1023
5
BACK OF THERMOSTAT
1
2
12
DIP 1 IS ON DIP 2 IS NOT USE
D

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
62-0125—3 10
TROUBLESHOOTING GUIDE
Symptom Possible Cause Action
Display does not turn
on.
Thermostat is not powered. •Check that the X terminal is connected to the system
transformer.
•Check for 24 Vac between X and R or RH terminals.
—If missing 24 Vac:
—check if the circuit breaker is tripped; if so, reset the
circuit breaker.
—check if the system fuse is blown; if so, replace the
fuse.
—check if the power switch on the HVAC equipment is
in the Off position; if so, set to the On position.
—check wiring between thermostat and HVAC
equipment and replace any broken wires and tighten
any loose connections.
—If 24 Vac is present, proceed with troubleshooting.
Temperature display is
incorrect.
Room temperature display has
been reconfigured.
Enter Installer Setup number 37 and reconfigure the display.
Thermostat is configured for
°F or °C display.
Enter Installer Setup number 14 and reconfigure the display.
Bad thermostat location. Relocate the thermostat.
Display shows two dashes and
a degree sign.
Installer Setup 22 is set for remote sensing and the sensor is
missing or the circuit is open or shorted.
Temperature settings
will not change.
(Example: Cannot set
heating higher or
cooling lower.)
Upper or lower temperature
limits were reached.
Check the temperature setpoints:
•Heating limits are 40 to 90°F (7 to 31°C)
•Cooling limits are 45 to 99°F (9 to 37°C)
The setpoint temperature
range stops were configured.
Check Installer Setup number 34 and 35 and reconfigure the
setpoint stops.
Keypad is locked. When a
locked key is pressed, LOC
flashes on the LCD.
•Reset dip switch 1 on the back of the thermostat to enable
the keypad.
•Enter Installer Setup number 25 or 40 and reconfigure
keypad lockout level.
Unable to configure
Installer Setup
Installer Setup is locked out. Reset the dip switch 1 on the back of the thermostat to enable
the keypad.
Temperature settings
change from original
setting.
Heating and cooling setpoints
set too close together. There is
a deadband in automatic
changeover thermostat
models. Example: cool
setpoint = 72, deadband = 3,
heat setpoint = 68, changing
heat setpoint to 70
automatically changes the
cool setpoint to 73.
•Check that the heating setpoint is lower than the cooling
setpoint.
•Check Installer Setup number 30 to identify the deadband
between heating and cooling setpoints. Reconfigure if
desired.
Room temperature is
out of control.
Remote temperature sensing
is not working.
Checkout all remote sensors.

T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
11 62-0125—3
Heating does not turn
on.
No power to the thermostat. •Check that the X terminal is connected to the system
transformer.
•Check for 24 Vac between X and R or RH terminals.
—If missing 24 Vac:
—check if the circuit breaker is tripped; if so, reset the
circuit breaker.
—check if the system fuse is blown; if so, replace the
fuse.
—check if the system switch at the equipment is in the
Off position; if so, set to the On position.
—check wiring between thermostat and HVAC
equipment and replace any broken wires and tighten
any loose connections.
—If 24 Vac is present, proceed with troubleshooting.
Thermostat minimum off-time
is activated and wait indicator
is displayed.
•Wait up to five minutes for the system to respond.
•Enter Installer Setup number 38. Reconfigure minimum off-
time (if required).
System selection is not set to
Heat.
Set system selection to Heat.
Cooling does not
turn on.
No power to the thermostat. •Check that X terminal is connected to the system
transformer.
•Check for 24 Vac between X and R or RC and Y terminals.
—If missing 24 Vac:
—check if the circuit breaker is tripped; if so, reset the
circuit breaker.
—check if the system fuse is blown; if so, replace the
fuse.
—check if the system switch at the equipment is in the
Off position; if so, set to the On position.
—check wiring between thermostat and HVAC
equipment and replace any broken wires and tighten
any loose connections.
—If 24 Vac is present, proceed with troubleshooting.
Thermostat minimum off-time
is activated and wait indicator
is displayed.
•Wait up to five minutes for the system to respond.
•Enter Installer Setup number 33. Reconfigure minimum off-
time (if required).
System selection is not set to
Cool.
Set system selection to Cool.
System on
indicator (flame=heat,
snowflake=cool) is
displayed, but no
warm or cool air is
coming from the
registers.
Conventional heating
equipment turns on the fan
when the furnace has
warmed up to a setpoint.
Wait one minute after the on indicator lights and then check
the registers.
Heating or cooling equipment
is not operating.
Verify operation of heating or cooling equipment in self-test.
24 Vac across all
terminals.
This is an arc suppression
voltage. Placing a load on the
terminal drops the voltage to
zero.
No action.
Symptom Possible Cause Action

62-0125—3 J.S. Rev. 12-98 www.honeywell.com
T7300F SERIES 2000 COMMERCIAL MICROELECTRONIC CONVENTIONAL OR HEAT PUMP THERMOSTAT
Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario
M1V 4Z9