69-1213 - XT302C Deluxe Programmable Heat-Cool Thermostat

Installer's Guide

H&BC Technical Communications

TRANE XT302C (01) PDF MANUAL

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TRANE XT302C (01)

XT302C Deluxe Programmable Heat-Cool Thermostat
18-HD25D7-5

APPLICATION

INSTALLER'S GUIDE

The XT302C Deluxe Programmable Heat-Cool Thermostat provides electrnic control of 24 Vac single-zone multistage systems. Refer to Table 1 for a general description of the thermostat. This thermostat requires a common wire to supply power.

Table 1. Description of XT302C.

Model XT302C

System Multistage

Changeover System Selection Automatic Heat-Off-Cool-Auto

Fan Selection

Comments

On-Auto

System and fan selections are done by keyboard.

RECYCLING NOTICE
If this thermostat is replacing a thermostat that contains mercury in a sealed tube, do not place your old thermostat in the trash.
Contact your local waste management authority for instructions regarding recycling and the proper disposal of the old thermostat.

Wallplate Installation
Position wallplate horizontally on the wall or on a 2 in. x 4 in. wiring box.
1. Position and level the wallplate for appearance only (the thermostat will function properly even when not level).

INSTALLATION
When Installing this Thermostat...
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.
Location
Install the thermostat about 5 ft (1.5m) above the floor in an area with good air circulation at average temperature. See Fig. 1. Avoid installing the thermostat where it can be affected by the following:
· 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.

YES NO

5 FEET [1.5 METERS]

M17106
Fig. 1. Typical location of thermostat.

69-1213-1

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

WIRES THROUGH WALL

WALL

WALL ANCHORS (2)

THERMOSTAT

W1 W2 G R

BLUE YELLOW BROWN
WHITE BLACK GREEN
RED

COMPRESSOR HEAT CONTACTOR 2 STAGE 2

HUMIDISTAT OPENS ON RISE TAYSTAT253A

OUTDOOR TEMPERATURE SENSOR TAYSENS100A

COMPRESSOR CONTACTOR 1

HEAT STAGE 1

FAN

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

L1 (HOT) L2 1
TRANSFORMER M17116

Fig. 3. Typical hookup of XT302C in a heat cool system.

MOUNTING HOLES
MOUNTING SCREWS
M15044
Fig. 2. Mounting the wallplate.
2. Use a pencil to mark the mounting holes. See Fig. 2. 3. Remove the wallplate from the wall and drill two 3/16
inch holes in the wall (if drywall) as marked. For firmer material such as plaster, drill two 7/32 inch holes. Gently tap anchors (provided) into the drilled holes until flush with the wall. 4. Position the wallplate over the holes, pulling wires through the wiring opening. 5. Loosely insert the mounting screws into the holes. 6. Tighten mounting screws.

FOR WRAPAROUND INSERTION STRIP 7/16 IN. (11 MM).

FOR STRAIGHT INSERTION STRIP 5/16 IN. (8 MM).
M4826

Fig. 4. Proper wiring technique.

Mounting Thermostat
1. Engage tabs at the top of the thermostat and wallplate. See Fig. 5.
2. Press lower edge of case to close and latch.
NOTE: To remove thermostat from wall, first pull out at bottom of thermostat; remove top last.

WIRING
All wiring must comply with local electrical codes and ordinances. Refer to Fig. 3 for typical hookup diagram. A letter code is located near each terminal for identification.
WARNING
Electronic Shock or Equipment Damage Hazard. Can shock individuals or cause equipment damage. Disconnect power before wiring to prevent electrical shock or equipment damage.
1. Loosen the terminal screws on the wallplate and connect the system wires. See Fig. 4.
NOTE: Use 18 gauge, color-coded thermostat cable for proper wiring.
2. Securely tighten each terminal screw. 3. Push excess wire back into the hole. 4. Plug the hole with nonflammable insulation to
prevent drafts from affecting the thermostat.

A. ENGAGE TABS AT TOP OF THERMOSTAT AND WALLPLATE.

B. PRESS LOWER EDGE OF CASE TO LATCH.

M17151

Fig. 5. Mounting thermostat on wallplate.

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

SET WAKE TIMES AND SETPOINTS
INCREASE TIME SETTING OR SCROLL FORWARD THROUGH INSTALLER SETUP AND SYSTEM TEST
SET CURRENT DAY AND TIME
RETURN TO NORMAL OPERATIONS
SET CURRENT OR PROGRAM DAY
ENTER INDEFINITE OR TIMED HOLD MODE
DECREASE TIME SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP AND SYSTEM TEST
CHANGE BETWEEN DAYLIGHT SAVINGS AND STANDARD TIME

INCREASE TEMPERATURE SETTING OR SCROLL FORWARD THROUGH INSTALLER SETUP OPTIONS

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Copy

Leave

Return

Set Program

Filter

System

Sleep Fan

COPY ONE PROGRAMMED DAY TO ANOTHER DAY

CHANGE BETWEEN HEATING AND COOLING SETPOINTS

SELECT FILTER EXPIRATION IN NUMBER OF DAYS

Fig. 6. XT302C key locations and descriptions.

DECREASE TEMPERATURE SETTING OR SCROLL BACKWARD THROUGH INSTALLER SETUP OPTIONS
DISPLAY INFORMATION SUCH AS PRESENT SETTINGS AND OUTDOOR TEMPERATURE
SET RETURN TIMES AND SETPOINTS
SET SLEEP TIMES AND SETPOINTS
SET LEAVE TIMES AND SETPOINTS
SELECT FAN OPERATION
SELECT SYSTEM OPERATION (HEAT, COOL, OFF, AUTO)
M17118

Using Thermostat Keys
The thermostat keys are used to: · Set current day and time, · Program times and setpoints for heating and cooling, · Temporarily override program temperatures, · Display present setting, · Configure Installer Setup, · Check Self-Test, · Display outdoor temperature (optional accessory), · Set the system operation, and · Set the fan operation.
See Fig. 6 for keypad explanation.
SETTINGS
System and Fan Settings
The system default setting is Heat and the fan default setting is Auto. Use the System and Fan keys to change the settings. See Figs. 7 and 8. The fan settings can be set for each program period individually. The system selection is for all the program periods.

System settings control the thermostat operation as follows:
Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between
heating and cooling operation, depending on the indoor temperature.

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Leave

Return

Set Program

Filter

System

Copy

Sleep Fan

System

System Heat Off Cool Auto

M12956

Fig.7. System key location and display.

Fan settings control the system fan as follows: On: Fan operates continuously. Auto: Fan operates with equipment.

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Leave

Return

Set Program

Filter

System

Copy

Sleep Fan

Fan

Fig. 8. Fan key location and display.

Fan OnAuto
M12957

NOTE: Always press the keys with your fingertip or similar blunt tool. Sharp instruments like a pen or pencil point can damage the keyboard.

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

Temperature Settings
Refer to Table 2 for the default program. For 7-Day and 24-Hour Operation, the settings are the same for each day of the week. Refer to the Owners Guide, Pub. No. 22-5127-04, for instructions on changing the default settings.

Table 2. Default Program Settings.

Period Wake Leave Return Sleep

Time 6:00 AM 8:00 AM 5:00 PM 10:00 PM

Heat Setpoint
70°F (21°C)
62°F (16.5°C)
70°F (21°C)
62°F (16.5°C)

Cool Setpoint
78°F (25.5°C)
85°F (29.5°C)
78°F (25.5°C)
82°F (28°C)

Fan Setting Auto
Auto
Auto
Auto

The Leave, Return and Sleep periods may be cleared. For example, the daytime energy-savings period (from Leave to Return) may not be used by the homeowner. To clear any period, follow the instructions in the Owners Guide in the Clearing Schedule Period section.

Comfort-RTM CONTROL
Adaptive Intelligent RecoveryTM CONTROL (A HONEYWELL TRADEMARK)
COOLING DROOP
TEMPERATURE DISPLAY
CLOCK FORMAT
SYSTEM SETTING (HEATING AND COOLING SETTING)
OUTDOOR TEMPERATURE DISPLAY
PROGRAMMING
M17110

OFF
ON
ON
FARENHEIT (°F)
24-HOUR CLOCK FORMAT
AUTO/MANUAL (SYSTEM AUTOMATICALLY SELECTS HEAT OR COOL; YOU CAN SELECT HEAT, COOL OR OFF.) NO OUTDOOR TEMPERATURE IS DISPLAYED
7-DAY PROGRAMMING

ON
OFF (CONVENTIONAL RECOVERY)

OFF

CENTIGRADE (°C)

24-HOUR CLOCK FORMAT
MANUAL ONLY (YOU SELECT HEAT, COOL OR OFF.)

AUTO ONLY (SYSTEM AUTOMATICALLY SELECTS HEAT OR COOL)

NO OUTDOOR TEMPERATURE IS DISPLAYED
24-HOUR PROGRAMMING

CONSTANT TEMPERATURE SETPOINT PROGRAMMING

Figure 9. Customizing Your Thermostat chart, from Owners Guide, Pub. No. 22-5127-04.

INSTALLER SETUP

The Installer Setup is used to customize the thermostat for specific systems. Some of the options include Comfort-RTM control activation, Fahrenheit vs. Centigrade temperature display, outdoor temperature display (requires outdoor sensor installation), and system changeover. Installer Setup numbers are listed in Table 3. The table includes all the configuration options and the factory-settings for the XT302C Deluxe Programmable Multistage Thermostat .

NOTE:

For most applications, the thermostat factorysettings apply. Review the factory settings in Table 2 and if no changes are necessary, go to the Installer Self-Test section.

IMPORTANT The chart Customizing Your Thermostat found in the beginning of the Owners Guide (see Fig. 9) must be completed. The homeowner identifies the options you install by referring to this chart.

Installer Setup Procedure

1. Press and hold the Information

, Increase v,

and Decrease w keys at the same time until all display

segments and the first setup number displays

(all display segments appear for approximately three

seconds before the setup number displays). See

Figs. 11 and 12.

Set Program Start Time Set Day/Time Temporary Setting Enrg

Hold for Em Ht

Aux Ht

Sav Room

MonTueWedThuFriSatSun

Heat Cool Outdoor

WakeLeaveReturnSleep In Recovery Auto Repl Batt

System

DST Fan

Em Heat OffCool Auto Wait

OnAuto

M17111

Fig. 10. Display of all the segments of the LCD.

INSTALLER SETUP NUMBER DISPLAY (COLUMN 2 OF TABLE 3)

FACTORY SETTING OR OTHER

CHOICE DISPLAY (COLUMN 3

OR 5 OF TABLE 3)

M10349

Fig. 11. Display of Installer Setup number and option.

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

-- To advance to the next Installer Setup, press Time v . -- To change a setting, press Increase v or Decrease w. -- To scroll the Installer Setup numbers backwards, press
Time w. -- To exit the Installer Setup, press Run Program.
CAUTION
Equipment Damage Hazard. Can cause permanent equipment damage. Electric heat systems must be configured to 1 in Installer Setup number 2 to prevent equipment damage caused by the system running without the fan.

IMPORTANT
Only configurable numbers display. Example: Installer Setup Number 1 does not display because it is not configurable. Review the factory settings in Table 3 and make any desired changes in the Actual Settings column. When the Installer Setup is complete, review the settings to confirm that they match the system and the boxes you checked in the Customizing Your Thermostat chart located in the Owners Guide.

Table 3. Installer Setup Options for the XT302C.

Select

Press Time v or w Installer
Setup Number

Press Increase v or Decrease w to change setting

Factory Setting

Other Choices

Display

Description

Display

Description

Programming

Press Time w to

bypass 241

and go directly

to setup #42

7-day programming 1 or 2

1--24-hour programming 2--No programming

Fan operation 2

Conventional

applications where

equipment controls

fan operation in heat

mode

Applications where thermostat controls fan operation in heat mode

Number of

heating Stages

2 heating stages

0 or 1 0--no heating

1--1 heating stage

Stage 1 heating 4 cycle rate

3--3 cph

5, 6, or 9 5--5 cph

recommended 5, 6, or

6--6 cph

9 cph not

9--9 cph

recommended

Stage 2 heating 5 cycle rate

5--5 cph

3, 6, or 9 3--3 cph

recommended

6--6 cph

3, 6, or 9 cph not

9--9 cph

recommended

Number of

Cooling Stages

1 cooling stage

0 or 2 0--no cooling

2--2 cooling stages

Stage 1 cooling 9 cycle rate

3--3 cph

2 or 5 2--2 cph

recommended

5--5 cph

2 or 5 cph not

recommended

Stage 2 cooling 10 cycle rate

3--3 cph

2 or 5 2--2 cph

recommended

5--5 cph

2 or 5 cph not

recommended

System setting 12 adjustment

Auto changeover

1 or 2 1--Manual changeover

2--Auto changeover only

Actual Setting
(continued)

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

Table 3. Installer Setup Options for the XT302C (continued).

Select
Adaptive Intelligent RecoveryTM control

Press Time v or w Installer
Setup Number
13

Degree

temperature

display

Clock format 16

Extended fan 19 operation in heatinga

Extended fan 20 operation in cooling

Outdoor

temperature

display (select

models)

Comfort-RTM 28 Enable

Minimum

Deadband

Between

Heating and

Cooling in Auto

Changeover

Mode

Minimum On 32 Time (Heat)

Press Increase v or Decrease w to change setting

Factory Setting

Other Choices

Display

Description

Display

Description

Adaptive Intelligent 1

Recovery (a

Honeywell trademark)

control is activated

(system starts early so

setpoint is reached by

start of program

period)

Conventional recovery (system starts recovery at programmed time)

Temperature displays 1

in °F

Temperature displays in °C

12-hour clock format 1

24-hour clock format

No extended fan

1, 2 or 3 1--Fan operation extends

operation after the call

30 seconds after the call

for heat ends

ends.

2--Fan operation extends

60 seconds after the call

ends.

3 --Fan operation extends

90 seconds after the call

ends.

No extended fan

1, 2 or 3 1--Fan operation extends

operation after the

30 seconds after the call

call for cool ends

ends.

2--Fan operation extends

60 seconds after the call

ends.

3 --Fan operation extends

90 seconds after the call

ends.

No outdoor

temperature displays

Outdoor temperature displays. Requires a TAYSENS100A Outdoor Sensor.

No fan delay

1 or 2

1--30 seconds 2--15 seconds

Heating and cooling 3 thru 10 Heating and cooling

setpoints can be set

setpoints can be set no

no closer than 4°F

closer than the chosen

(2°C)

value:

3--3°F (1.5°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)

5-minute minimum on 0 thru 15 Minimum number of minutes

time for compressor

(0 thru 15) the compressor

will be on during call for

heat

Actual Setting
(continued)

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

Table 3. Installer Setup Options for the XT302C (continued).

Select
Minimum On Time (Cool)

Press Time v or w Installer
Setup Number
33

Press Increase v or Decrease w to change setting

Factory Setting

Other Choices

Display

Description

Display

Description

10-minute minimum on 0 thru 15 Minimum number of minutes

time for compressor

(0 thru 15) the compressor

will be on during call for

cool

Temperature 34 range stops in heating

Highest setpoint

55 to 85 Temperature range (1°F

heating can be set to

increments) heating

setpoint can be set to

Temperature 35 range stops in cooling

Lowest setpoint

65 to 99 Temperature range (1°F

cooling can be set to

increments) cooling

setpoint can be set to

Temperature 37 display adjustment

No difference

3, 2, 1, -1, 3--Display adjusts to 3°F

in displayed

-2, or

higher than actual room

temperature and

-3

temperature

actual room

2--Display adjusts to 2°F

temperature

higher than actual room

temperature

1--Display adjusts to 1°F

higher than actual room

temperature

-1--Display adjusts to 1°F

lower than actual room

temperature

-2--Display adjusts to 2°F

lower than actual room

temperature

-3--Display adjusts to 3°F

lower than actual room

temperature

Minimum Off 38 Time (Heat)

5 minute minimum off 0 thru 15 Minimum number of minutes

time for the

(0 thru 15) the compressor

compressor

will be off between calls for

heat

Minimum Off 39 Time (Cool)

5 minute minimum off 0 thru 15 Minimum number of minutes

time for the

(0 thru 15) the compressor

compressor

will be off between calls for

cool

Cooling Droop 41

Cooling droop

activated

No cooling droop

Programming

Press Time w to

bypass 241

and go directly

to setup #42

7-day programming 1 or 2

1--24-hour programming 2--No programming

Actual Setting

IMPORTANT Review the settings to confirm that they match the system. Press Run Program to exit the Installer Setup. The thermostat saves the Installer Setup changes and initiates a reset in order to operate using the new settings.
NOTE: For initial installations only, set the current day and time following the setup reset.

Setting Current Day and Time
1. Press Set Current Day/Time.

Set Current Day/Time

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Leave

Return

Set Program

Filter

System

Copy

Sleep Fan

Mon

Set Day/Time PM
M12951

NOTE: On initial power up or after an extended power loss, 1:00 pm flashes on the display until a key is pressed.

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

2. Press Day until the current day displays.

Day

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Leave

Return

Set Program

Filter

System

Copy

Sleep Fan

Tue

Set Day/Time PM
M12952

NOTE: Sun=Sunday, Mon=Monday, Tue=Tuesday, Wed=Wednesday, Thu=Thursday, Fri=Friday, Sat=Saturday.

3. Press Time v or Time w until the current time displays.

Time

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Leave

Return

Set Program

Filter

System

Copy

Sleep Fan

Tue

Set Day/Time AM
M12953

NOTE: Tapping the Set Current Day/Time will change the time in one hour increments.

NOTE: If the current time is Daylight Savings Time, press Daylight Time until DST displays.

Daylight Time

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Leave

Return

Set Program

Filter

System

Copy

Sleep Fan

Tue

4. Press Run Program.

Set Day/Time AM
DST
M12954

To start the self-test:

Press and hold the Increase v and Decrease w keys at the same time until all display segments and the number 10 appears (all displays segments appear for approximately three seconds before the test number displays). See Figs. 12 and 13.

Table 4. Tests Available In The Installer Self-Test.

Test Number

Self-Test Description

Heating Equipment

Cooling Equipment

Fan Equipment

Comfort-R Terminals (H-H)

Keyboard Operation

Device Information

Set Program Start Time Set Day/Time Temporary Setting Enrg

Hold for Em Ht

Aux Ht

Sav Room

MonTueWedThuFriSatSun

Heat Cool Outdoor

WakeLeaveReturnSleep In Recovery Auto Repl Batt

System

DST Fan

Em Heat OffCool Auto Wait

OnAuto

M17111

Fig. 12. Display of all the segments of the LCD.

Run Program

Set Current Day/Time

Hold Temp

Day

Daylight Time

Time

Wake
Heat/Cool Settings

Leave

Return

Set Program

Filter

System

Copy

Sleep Fan

Tue Wake
System Heat

AM Room

DST

Fan Auto

M12955

INSTALLER SELF-TEST
Use the Installer Self-Test to check the thermostat operation. Refer to Table 4 for a list of the available self-tests.
CAUTION
Equipment Damage Hazard. Equipment damage can occur if the compressor is cycled too quickly. The minimum off time is deactivated during the Installer Self-Test. Perform the test so that the compressor is cycled slowly.

TEST NUMBER

M10257A

Fig. 13. Display of test number.

Refer to Table 5 for the directions and results of the specific tests.

NOTE:

Press Time v to advance to the next test and Time w to go back to the previous test. Press Run Program to exit the self-test. This mode times out 5 minutes after the last key press.

NOTE: Press Time w to return to the previous test or Time v to advance to the next test.
NOTE: To exit, press Time v or Time w then Run Program.

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

Table 5. Installer Self-Test Options.

Key to Press

Test Number

Description

Heating Equipment Self-Test (10)

Time v 10

Enter heating equipment self-test.

Temp v 11

First stage heat turns on. When Installer Setup number 2 is 1, the system fan is also energized.

Temp v 12

Second stage heat turns on.

Temp w 11

Second stage heat turns off.

Temp w 10

First stage heat turns off.

Cooling Equipment Self-Test (30)

Time v 30

Enter cooling equipment self-test.

Temp v 31

First stage cool and fan turn on.

Temp v 32

Second stage cool turns on.

Temp v 31

Second stage cool turns off.

Temp w 30

First stage cool and fan turn off.

Fan Equipment Self-Test (40)

Time v 40

Enter fan equipment self-test.

Temp v 41

Fan turns on.

Temp w 40

Fan turns off.

Comfort-R Terminals Self-Test (50)

Temp v 50

Enter Comfort-R self-test.

Temp w 51

Reads HH terminals. If the terminals are open and Comfort-R is enabled, display reads % humidity. If the terminals are closed no % humidity displays.

Keyboard Operation Self-Test (60)

Time v 60 7

Enter keyboard operation self-test.

Temp v 60 9

Increase test number displays.

Temp w 60 8

Decrease test number displays.

Day Copy System

60 11 60 12 60 3

Day test number displays. Copy test number displays. System test number displays.

Fan

60 10

Set

60 1

Current

Day/Time

Run

60 15

Program

Daylight 60 19 Time

Heat/ Cool 60 5 Settings

Fan test number displays. Set Current Day/Time test number displays.
Run Program test number displays. Daylight Time test number displays. Heat/Cool Settings test number displays.

Wake Leave Return

60 0 60 14 60 16

Wake test number displays. Leave test number displays. Return test number displays.

Sleep Filter i

60 2 60 17 60 13

Sleep test number displays. Filter test number displays. Information test number displays.

Device Information Self-Test (70) - Refer to following section.

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

DEVICE INFORMATION SELF-TEST (70)

4. Press Increase v again to display the software revision number (Example: 001=Revision number 1).

1. Press Temp v and w keys simultaneously, then press Time w to access the thermostat information.
M4934
2. Press Increase v to display the production date code in a 3-digit format. The first two digits represent the month and the third digit represents the last digit of the year (Example: 128=December 1998).
M17112
3. Press Increase v again to display the software identification code. (Example: 200 = software ID code 200)

M10229
5. Press the Increase v again to display the model identification number. (Example: 314 = Model ID 314)
M4933A
6. Press Run Program to exit the self-test. The self-test mode times out 5 minutes after the last key press.
CHECKOUT
Outdoor Temperature Sensor (optional accessory)
Expose the outdoor temperature to outdoor air for a minimum of five minutes before reading.

M17113

TROUBLESHOOTING GUIDE

Symptom

Possible Cause

Action

Display will not come on.

Thermostat is not being powered.

Check for 24 Vac between R and W terminals. Check if the circuit breaker is tripped--reset the circuit breaker. Check if the system fuse is blown--replace the fuse. Check if the power switch on the HVAC equipment is in the Off position--set to the On position. Check wiring between thermostat and HVAC equipment--replace any broken wires and tighten any loose connections. If 24 Vac is present, proceed with troubleshooting.

Temperature display is Room temperature

incorrect.

display has been

reconfigured.

Enter Installer Setup number 37 and reconfigure the display.

Thermostat is configured Enter Installer Setup number 14 and reconfigure the display. for °F or °C display.

Bad thermostat location. Relocate the thermostat.

Temperature displaying digits as dashes (---).

Internal temperature measurement failure.

Contact distributor or retailer.

Temperature settings will not change. (Example:
Cannot set the heating higher or the cooling lower.)

The upper or lower temperature limits were reached.

Check the temperature setpoints:
Heating limits are 55 to 85°F (13 to 29°C). Cooling limits are 65 to 99°F (18 to 37°C).

The setpoint temperature Check Installer Setup numbers 34 and 35 and reconfigure the

range stops were

setpoint stops.

configured.

(continued)

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

TROUBLESHOOTING (Continued).

Symptom

Possible Cause

Action

Heating will not come No power to the

on.

thermostat.

Check for 24 Vac between R and W terminals. If missing 24 Vac: Check if the circuit breaker is tripped--reset the circuit breaker. Check if the system fuse is blown--replace the fuse. Check if the power switch on the HVAC equipment is in the Off position--set to the On position. Check wiring between thermostat and HVAC equipment--replace any broken wires and tighten any loose connections. If 24 Vac is present, proceed with troubleshooting.

Heating will not come Thermostat minimum off Wait up to five minutes for the system to respond.

on.

time is activated.

System selection is not Set system selection to Heat. set to Heat.

Heating setpoint is below Check heating setpoint. Set heating setpoint to desired temperature. room temperature.

Cooling will not come No power to the

on.

thermostat.

Thermostat minimum off Wait up to five minutes for the system to respond. Enter Installer Setup

time is activated.

number 39. Reconfigure minimum off time (if required).

System selection is not Set system selection to Cool. set to Cool.

Cool setpoint is above Check cooling setpoint. Set cooling setpoint to desired temperature. room temperature.

Heating or cooling Heat or cool circuit is Add resistor in parallel with load or install interface relay.

come on momentarily opening up or becoming

and shut off

high impedance.

System on indicator (flame=heat, snowflake=cool) displays, but no
warm or cool air is coming from the registers.

Heating equipment turns on the fan when the furnace has warmed up to a setpoint.

Wait a minute after seeing the on indicator and then check the registers.

Heating or cooling equipment is not operating.

Verify operation of heating or cooling equipment in self-test.

Outdoor temperature not displayed or is incorrect.

Option not activated.
Outdoor sensor is connected incorrectly.

Enter Installer Setup number 24 and set to 1. Thermostat must have OT terminals and a TAYSENS100A installed.
Refer to TAYSENS100A installation instructions and check wiring between the thermostat and sensor.

Wrong sensor.

Replace sensor with TAYSENS100A sensor.

Filter expired.

Refer to the Filter Indication section in the Owner's Guide, Pub. No. 22-5127-04

System on indicator reads Filter and backlight is flashing.

Filter expired.

Refer to the Filter Indication section.

Time displaying digits Internal memory failure. Contact distributor or retailer. as three E's (EEE).

Pub. No. 18-HD25D7-5

69-1213--1 (T8624)

XT302C DELUXE PROGRAMMABLE HEAT-COOL THERMOSTAT

Pub. No. 18-HD25D7-5 69-1213--1 (TT8. C62. 4)Rev. 1-99

Printed in Taiw12an R.O.C.

American Standard Inc. Troup Highway Tyler, TX 75711-9010

Acrobat Distiller 3.0 for Power Macintosh