Trane TCONT900AC43UA User Manual

69-1817-04

TCONT900AC43UA Communicating,
Programmable Comfort Control

OWNER’S GUIDE

Pub No. 22-5211-02

TABLE OF CONTENTS

Page Contents
3Features
4 Home Screen
6 Programming Your Heating and Cooling Schedule
14 Operating Your Comfort Control
21 Cleaning Your Comfort Control Screen
22 Reading Your Outdoor Temperature
26 Reading Your Inside Humidity Level
27 Controlling Your Inside Dehumidification Setting
29 Controlling Your Inside Humidification Setting
34 Advanced Settings
36 User Setup Menu
47 Error Codes
48 Frequently Asked Questions and Answers
49 Limited Five-Year Warranty
51 Customer Assistance

IMPORTANT

The Comfort Control has a touch screen interface. Touch keys appear, as necessary, to
complete tasks. Always press the keys with your fingertips. Sharp instruments like a pen or
pencil point can damage the Comfort Control.

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FEATURES

• Large, Clear Display with Backlighting – current temperature, set temperature and time are
easy-to-read and all are displayed on the home screen.

• Menu Driven Programming – Guides you through the scheduling process, showing only
necessary information and choices on each screen.

• Ability to Select Multiple Days – allows you to easily customize the Comfort Control for your
unique schedule.

• Real-Time Clock – keeps time during power failure; automatically updates for daylight savings.

• Precise Temperature Control (+/- 1°F) (+/- .5°C) – reliable, consistent comfort.

• Multiple HOLD options – allows you to modify schedule indefinitely or for a specific time.

• Change Reminders – reminds you to service or replace the air filters and/or humidifier pad.

• Programmable Fan – increases air quality when combined with a whole-house air cleaner.

• Outdoor Temperature Indication – shows current outdoor temperature on the display to help
you plan outdoor activities.

NOTE: The home screen may differ slightly, depending on the heating and/or cooling system you

have and the Comfort Control settings for your system type.

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HOME SCREEN

SCHEDHOLD

CLOCK

SC

E

O

SYSTEM

g

Schedule

de

S

o

Key Description

SELECTS ON/AUTO/CIRC

SELECTS EM. HEAT/HEAT/OFF/COOL/AUTO

ENTERS SCHEDULING MODE

FAN

Insi

AUT

SYSTEM

SCHED

SETS A PERMANENT HOLD AND

ACTIVATES VACATION HOLD

HOLD

TUE

UP ARROW

et T

Followin

REENMOR

SCREEN

LOCKS OUT THE SCREEN TO ALLOW FOR CLEANING

CLOCK

SETS THE TIME FORWARD OR BACK

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RAISES TEMPERATURE SETTING

DOWN ARROW

LOWERS TEMPERATURE SETTING

MORE (SELECT MODELS)

SHOWS ADDITIONAL SYSTEM
INFORMATION

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HOME SCREEN

SCHEDHOLD

CLOCK

SC

E

UE

O

SYSTEM

g

Schedule

de

S

o

UE

SHOWS CU

K

E

SHOWS

E

Display Description

RRENT DAY OF THE WEE

SHOWS FAN SETTING

SHOWS CURRENT SYSTEM POSITION

DISPLAY CURRENT TIME OF DAY,

HOLD TIME REMAINING OR NUMBER

OF VACATION DAYS REMAINING

FAN

SYSTEM

TIME

T

T

Insi

AUT

HEA

INSIDE TEMPERATUR

THE CURRENT INSIDE TEMPERATUR

SET TO TEMPERATURE

SHOWS THE CURRENT

et T

Followin

REENMOR

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SET TEMPERATURE

FOLLOWING SCHEDULE

SHOWS THE THERMOSTAT IS
FOLLOWING THE PROGRAMMED
SCHEDULE

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PROGRAMMING YOUR HEATING AND COOLING SCHEDULE

Your Comfort Control can control up to four different schedule periods per day:

Wake – Period when you awaken and want your home at a comfortable temperature.
Leave – Period when you are away from home and want an energy-saving temperature.
Return – Period when you return home and want your home back to a comfortable temperature.
Sleep – Period when you are asleep and want an energy-saving temperature.

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NOTE: Schedule times are in 15-minute intervals.

Preprogrammed Energy Star Settings

Table 1 shows default program settings. Visit the Energy Star web site at www.energystar.gov for
additional education and resources on programmable Comfort Controls.

Table 1. Energy Star Default Program Settings.

Schedule Period Time Setpoints Fan Setting

Heat Cool

Wake 6:00 AM 70°F (21°C) 78°F (25.5°C) Auto

Leave 8:00 AM 62°F (16.5°C) 85°F (29.5°C) Auto

Return 6:00 PM 70°F (21°C) 78°F (25.5°C) Auto

Sleep 10:00 PM 62°F (16.5°C) 82°F (27.8°C) Auto

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EDITING SCHEDULE

SCHED

HOLD

PM

1. Press Sched key.

2. Press Edit key.

FAN

Inside

AUTO

SYSTEM

HEAT

MON

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF
COOL
AUTO

DONE

AM

PM

SCHED HOLD CLOCK SCREEN

TUE WED THU FRI SA SUN

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

Inside

CANCEL
PERIOD

AM

PM

SCHED

HOLD

CLOCK SCREEN

WAKE

EDIT

LEAVE RETURN SLEEP CANCEL

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Set

Set

FRI

Following
Schedule

Following

Schedule

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HEAT

COOL

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3. It is OK to pick multiple days. Select any combination of days to edit. These days are sched-
uled with the same times and temperatures. Check marks appear next to days selected.

TUE WED THU FRI SAT SUN

MON

OK TO PICK MULTIPLE DAYS

FAN

ON
AUTO
CIRC

CANCEL
PERIOD

AM

HEAT

COOL

DONE WAKE LEAVE RETURN SLEEP CANCEL

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4. Press Wake key. Once pressed, Wake flashes to show it is selected.

5. Press Up and Down keys to modify time and heat and cool temperatures from this screen.

NOTE: The Fan setting can be programmed for On, Auto, or Circ for each period selected. See

“Fan Schedule” on page 19 for more information.

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6. Press Leave key and repeat step 5.

MON

TUE WED THU FRI

SAVING

CHANGES

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7. Press Return key and repeat step 5.

8. Press Sleep key and repeat step 5.

9. When complete, press Done key. “Saving Changes” appears on the screen to indicate

changes are being saved to the day(s) modified.

NOTE: To set a Program Schedule for the remaining days of the week, repeat steps 1-9.

Example: If Mon - Fri was selected first, go back and repeat steps 1-9 for Sat and Sun.

10. To exit schedule without saving changes, press Cancel key any time.

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CANCELING A SCHEDULE PERIOD

SCHEDSCHED HOLDHOLD CLOCK SCREEN

DONE

WAKE

LEAVE RETURN SLEEP CANCEL

MON

TUE WED THU FRI SAT SUN

AM

PMPM

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF
COOL
AUTO

CANCEL

PERIOD

HEAT

COOL

Following
Schedule

Inside

Set To

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

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NOTE: You may want to cancel a period to match your lifestyle; for example, if someone is always

home during the day on Tuesday, you can cancel the Leave and Return periods (the Com­fort Control would then control to the Wake temperature until the Sleep period).

1. Press Sched key.

2. Press Edit key.

3. Select the Day(s) of the week desired.

4. Press schedule period you want to cancel (Wake, Leave, Return or Sleep). Once selected, the

period flashes.

5. Press Cancel Period key.

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NOTE: Note that the time, temperature(s) and fan setting disappear. The bar above the selected

SCHEDSCHED HOLDHOLD CLOCK SCREEN

DONE

WAKE

LEAVE RETURN SLEEP CANCEL

MON

TUE WED THU FRI SAT SUN

AM

PMPM

FAN

AUTO

SYSTEM

EM HEAT

HEAT

OFF
COOL
AUTO

CANCEL
PERIOD

HEAT

COOL

Following
Schedule

Inside

Set To

OK TO PICK MULTIPLE DAYS SCREEN LOCKED

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period is removed, indicating the scheduled period was cancelled. To reinstate a schedule
period, press arrow keys to set desired time and temperatures.

6. Press Done key.

NOTE: When changing from non-programmable to programmable mode, the screen displays “Per-

manent Hold” under the time icon. This goes away when the schedule key is hit or the
schedule menu is entered.

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SETTING TIME

SCHEDSCHED HOLDHOLD CLOCK SCREEN

DONE

TUE

AM

PMPM

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1. Press Clock.

2. Use arrows to set current time.

3. Press Done key.

IMPORTANT

The current day of the week should already be set correctly. If not, see “Advanced Settings”
on page 34 to set the day.

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OPERATING YOUR COMFORT CONTROL

Setting Fan and System Keys

SETTING FAN KEY

The Fan key selections vary based on your heating and/or cooling system type.
On – Fan runs continuously. Use this setting for improved air circulation or for more efficient central
air cleaning. The Trane Proprietary Humidity Control might disable continuous fan function. See
“Trane Proprietary Humidity Control” on page 28 for additional information.

Auto – Fan follows fan program schedule. See “Fan Schedule” on page 19 for more information.
Circ – Circulation control will provide a variable circulation determined by the Adaptive Intelligent

Circulation (AIC) algorithm running the fan between 20% and 60% of the time.

SETTING SYSTEM KEY

The System key selections vary based on your heating and/or cooling system type.

Heat – Controls your heating system.
Off – Both heating and cooling systems are off.
Cool – Controls your cooling system.
Auto (when enabled) – Controls both your heating and cooling system based on temperature.
Em. Heat – Compressor is locked out and auxiliary heat cycles to maintain temperature. (Used only

for heat pump systems with backup heat)

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Setting Temperature Overrides

Your Comfort Control has three temperature override options: Hold Temperature Until, Permanent
Hold and Vacation Hold.

HOLD TEMPERATURE UNTIL (TEMPORARY HOLD)

Holds temperature temporarily until the next scheduled period time or until the time the user sets.

1. Press Up or Down arrow next to the temperature you want to adjust. “Hold Temperature Until”
time appears on the screen. The Hold Temperature Until time defaults to the start time of the
next scheduled period.

NOTE: The Time Up and Down arrows are shown for approximately seven seconds. Pressing on

the screen time (where the Hold Temperature Until time is shown) allows the arrows to
reappear.

2. Press Up or Down arrow next to the Time key to set desired time for the Comfort Control to
resume schedule.

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3. Press the Cancel or Sched key to cancel “Hold Tem-

SCHED HOLD CLOCK SCREEN

CANCEL

TUE

PM

FAN

AUTO

SYSTEM

HEAT

Inside

Hold Temperature

Until

Set

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perature Until” and resume schedule.

NOTE: Once “Hold Temperature Until” time is reached, the

comfort control shows “Following Schedule” on the
screen to indicate that “Temporary Hold” has ended.

PERMANENT HOLD

Permanent Hold changes the temperature setting until
Permanent Hold is cancelled.

1. Press Hold key. “Permanent Hold” appears on the
screen.

2. Press Up or Down arrow next to the temperature you
want to set during “Hold”.

3. Press Cancel key to cancel “Permanent Hold” and
resume the schedule.

NOTE: In ISU 0160, when changing from nonprogrammable

to programmable mode, the screen displays “Per­manent Hold” under the time icon. This goes away
when the schedule key is hit or the schedule menu
is entered.

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TUE

FAN

Inside

AUTO

SYSTEM

HEAT

Permanent

Hold

SCHED HOLD CLOCK SCREEN

Set To

AM

CANCEL

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