Home

href="
Programmable Thermostat  
TAYSTAT 340, 350  
OWNER’S GUIDE  
Pub. No. 22-5183-01  
69-1228-1  
href="
FEATURES  
The Trane Co. sells comfort systems.  
Comfort is achieved through matching the  
correct equipment and controls. This  
thermostat is designed to provide the  
maximum comfort for your needs.  
Some of the basic offerings are:  
HOLD KEY OVERRIDES PROGRAM  
OR HOLDS TEMPERATURE INDEFINITELY.  
INCREASE KEY:  
INCREASE  
SETPOINT,  
OR ADVANCE  
TO NEXT STEP.  
LCD DISPLAY  
SELECT KEY:  
TO SET TIME  
AND DAY.  
Hold  
Select  
PM  
Program up to four time periods and  
temperature settings to complement  
your lifestyle.  
TUE  
DECREASE KEY:  
DECREASE  
TEMPERATURE  
OR SCROLL  
THROUGH  
INSTALLER  
SETUP OPTIONS.  
Set different schedules for weekdays  
and weekends.  
FAN  
Auto On  
SYSTEM  
Cool Off Heat  
M18527  
Programs are permanently held in  
memory in the event of a power failure.  
SYSTEM SWITCH  
FAN SWITCH  
Indefinite temperature hold.  
Preprogrammed for your convenience.  
Pub. No. 22-5183-01  
69-1228—1  
2
href="
Your thermostat displays the  
current day, time, period,  
temperature and system ( for  
CURRENT TEMPERATURE DISPLAYS.  
HEATING OR COOLING SETPOINT  
DISPLAYS DURING PROGRAMMING.  
SET DISPLAYS WHILE  
SETTING THE CLOCK.  
CURRENT TIME DISPLAYS  
IN NORMAL MODE.  
PERIOD START TIME DISPLAYS  
IN PROGRAMMING MODE.  
TEMPORARY DISPLAYS  
DURING TEMPORARY  
TEMPERATURE HOLD.  
heating and  
for cooling) in  
normal mode. In programming  
mode, only the setting or  
settings being programmed  
display. For example “SAT SUN”  
(Saturday Sunday) displays  
while programming the  
CURRENT DAY DISPLAYS IN  
NORMAL MODE. MONDAY  
THROUGH FRIDAY DISPLAY  
DURING WEEKDAY  
PROGRAMMING MODE.  
SATURDAY AND SUNDAY  
DISPLAY DURING WEEKEND  
PROGRAMMING MODE.  
SET TEMPORARY  
weekend schedule.  
DURING NORMAL MODE, THE CURRENT PERIOD  
DISPLAYS. DURING PROGRAMMING, THE PERIOD BEING  
PROGRAMMED DISPLAYS (WAKE, LEAVE, RETURN OR SLEEP).  
FLAME DISPLAYS DURING HEATING OR WHILE  
PROGRAMMING HEATING SETPOINT; SNOWFLAKE DISPLAYS  
DURING COOLING OR WHILE PROGRAMMING COOLING SETPOINT.  
M18560  
Pub. No. 22-5183-01  
3
69-12281  
href="
SET  
PROGRAMMING YOUR  
THERMOSTAT  
PM  
M12591A  
CLOCK  
Setting the Current Day and Time  
To set or reset the current day and time,  
follow these instructions:  
Note:  
While setting the current time, SET  
displays.  
2. To set Day of Week, press Select  
again. Press or to set current day.  
IMPORTANT  
Always press the keys with your  
fingertip or similar blunt tool. Sharp  
objects like pen and pencil points will  
damage the keyboard.  
SET  
M18565  
Note:  
To exit and save the programming  
mode at any time, press Hold.  
3. Press Hold to exit programming mode.  
1. To set Current Time, press Select twice.  
Press or to set current time.  
Pub. No. 22-5183-01  
69-12281  
4
href="
Organizing Your Schedule  
Your thermostat can be set for four time periods (Wake, Leave, Return, and Sleep) for the  
weekday schedule (Monday through Friday), and four time periods for the weekend schedule  
(Saturday and Sunday). Without additional programming, your thermostat follows the same  
preprogrammed schedule for both weekdays and weekends (see Table 1).  
WAKE  
Choose the time you want your heating or cooling system to start to  
reach your comfort temperature after the SLEEP period.  
How? Consider the time required to reach your comfort level. Adjust the  
Wake time to earlier when you know it will take the system longer to  
reach your comfort temperature.  
LEAVE  
Choose the time you want your heating or cooling system to start an  
energy-saving mode while you are away at work or school.  
How? Set the Leave temperature lower during heating season, and  
higher during cooling season.  
Pub. No. 22-5183-01  
5
69-12281  
href="
RETURN  
SLEEP  
Choose the time you want your heating or cooling system to start to  
reach your comfort temperature after the energy-savings LEAVE  
period.  
How? Consider the time required to reach your comfort level. Adjust the  
Return time to earlier when you know it will take the system longer to  
reach your comfort temperature.  
Set the time you want your heating or cooling system to start to reach  
your Sleep temperature.  
To use this period as an energy-savings mode, set the temperature  
lower during heating season, and higher during cooling season.  
Pub. No. 22-5183-01  
69-12281  
6
href="
The preprogrammed schedule is shown in Table 1. You may keep this schedule or organize your  
own. Schedules are adjustable as often as you wish. If you decide to keep this schedule, no  
further programming is necessary.  
Table 1. Preprogrammed Weekday and Weekend Schedule.  
Period  
Time  
6:00 AM  
Heat Setpoint  
70°F (21°C)  
Cool Setpoint  
78°F (26°C)  
Wake  
Leave  
Return  
Sleep  
8:00 AM  
5:00 PM  
10:00 PM  
62°F (17°C)  
70°F (21°C)  
62°F (17°C)  
85°F (29°C)  
78°F (26°C)  
75°F (24°C)  
To begin programming your weekday and weekend schedules, fill in Tables 2 and 3.  
Pub. No. 22-5183-01  
69-12281  
7
href="
Customizing Your Weekday Schedule  
Use Table 2 to organize your weekday schedule. Fill in the times and temperatures you want to  
program. The names of the four periods are filled in for you.  
Table 2. Your Weekday Schedule.  
Heating  
Temperature  
Cooling  
Temperature  
Period  
Start Time  
Wake  
Leave  
Return  
Sleep  
Pub. No. 22-5183-01  
69-12281  
8
href="
Customizing Your Weekend Schedule  
Use Table 3 to organize your weekend schedule. Fill in the times and temperatures you want to  
program. The names of the four periods are filled in for you.  
Table 3. Your Weekend Schedule.  
Heating  
Temperature  
Cooling  
Temperature  
Period  
Start Time  
Wake  
Leave  
Return  
Sleep  
Note: Start Time is the time your thermostat begins to reach the desired temperature.  
Note: The thermostat cannot be set higher than 99°F (37°C) or lower than 50°F (10°C).  
Pub. No. 22-5183-01  
69-12281  
9
href="
Setting the Weekday Program  
IMPORTANT  
Hold  
Select  
Always press the keys with your  
fingertip or similar blunt tool. Sharp  
objects like pen and pencil points will  
damage the keyboard.  
PM  
TUE  
1. Slide the SYSTEM switch to the setting  
you want to program (Heat or Cool).  
FAN  
Auto On  
SYSTEM  
Cool Off Heat  
Throughout programming, the thermo-  
stat displays a flame (heating) or  
snowflake (cooling) to help you  
identify which mode you are program-  
ming. At the end of Setting the Week-  
end Program, you are prompted to  
return to this step to program the  
opposite mode. Example shows Cool  
setting.  
M18545  
Note: To exit the programming mode at any  
time, press Hold (the thermostat saves  
your changes).  
Pub. No. 22-5183-01  
69-12281  
10  
href="
2. Set weekday Wake time and tempera-  
ture.  
SET  
a. Press Select four times. Press ▲  
or to set Wake time.  
SET  
M18564  
Note: When setting the Weekday Program,  
the days MON TUE WED THU FRI  
display.  
M18570  
3. Set weekday Leave time and tempera-  
ture.  
Note: Schedule times are programmable in  
increments of 15 minutes. For each  
press, the time increases or decreases  
by 15 minutes.  
a. Press Select. Press or to  
set Leave time.  
SET  
b. Press Select. Press or to  
set Wake temperature.  
M18566  
Pub. No. 22-5183-01  
11  
69-12281  
href="
b. Press Select. Press or to  
set Leave temperature.  
b. Press Select. Press or to  
set Return temperature.  
SET  
SET  
M18561  
M18562  
5. Set weekday Sleep time and tempera-  
ture.  
4. Set weekday Return time and tempera-  
ture.  
a. Press Select. Press or to  
set Sleep time.  
a. Press Select. Press or to  
set Return time.  
SET  
SET  
M18567  
M18568  
Pub. No. 22-5183-01  
69-12281  
12  
href="
b. Press Select. Press or to  
set Sleep temperature.  
Setting the Weekend Program  
SET  
Note: For initial programming, you must set  
the weekday schedule as shown in  
Setting the Weekday Program before  
you can access weekend program-  
ming. If your weekday is already  
programmed, you can access weekend  
programming by pressing Select 12  
times.  
M18563  
IMPORTANT:  
Before pressing another key,  
continue with Setting the Weekend  
Program.  
1. Set weekend Wake time and tempera-  
ture.  
a. Press Select. Press or to  
set Wake time.  
SET  
M18569  
Pub. No. 22-5183-01  
69-12281  
13  
href="
Example shows Cool setting.  
b. Press Select. Press or to  
set Wake temperature.  
b. Press Select. Press or to  
set Leave temperature.  
SET  
SET  
M18551  
M18549  
3. Set weekend Return time and tempera-  
ture.  
Note:  
When setting the Weekend Program,  
the days SAT SUN display.  
a. Press Select. Press or to  
set Return time.  
2. Set weekend Leave time and tempera-  
ture.  
SET  
a. Press Select. Press or to  
set Leave time.  
SET  
M18552  
Pub. No. 22-5183-01  
M18550  
69-12281  
14  
href="
b. Press Select. Press or to  
set Return temperature.  
b. Press Select. Press or to  
set Sleep temperature.  
SET  
SET  
M18553  
M18555  
5. Press Select. End displays.  
4. Set weekend Sleep time and tempera-  
ture.  
SET  
a. Press Select. Press or to  
set Sleep time.  
SET  
M18556  
After five seconds, your thermostat displays  
the current day, time and temperature.  
M18554  
Pub. No. 22-5183-01  
15  
69-12281  
href="
Note: The temporary temperature setting  
remains in effect until the next program  
period. To cancel, press Hold twice  
and wait five seconds.  
M18557  
Indefinite Temperature Hold  
The Hold key allows you to hold a tempera-  
ture indefinitely. When Hold is active, Hld  
displays continuously.  
6. Return to Step 1., Setting the Week-  
day Program to program the opposite  
mode,  
(heating) or  
(cooling).  
Your weekday and weekend schedules are  
now programmed.  
1. Press Hold.  
2. Press or key to set indefinite  
temperature setting.  
Temporary Temperature Hold  
1. Press or key twice to set a  
temporary temperature.  
TEMPORARY  
M18559  
Pub. No. 22-5183-01  
M18558  
69-12281  
16  
href="
3. To cancel, press Hold and wait five  
seconds.  
Hold  
Select  
PM  
System and Fan  
Use the SYSTEM and FAN switches to  
change the settings.  
TUE  
Note: When the TAYSTAT 350 is used with  
two-stage heating equipment, there  
is an airflow change when the stage  
change occurs.  
FAN  
Auto On  
SYSTEM  
Cool Off Heat  
SYSTEM SWITCH  
M18546  
SYSTEM settings control the thermostat  
operation as follows:  
Cool: The thermostat controls the cooling.  
Off: Both the heating and cooling are off.  
Heat: The thermostat controls the heating.  
System Setting  
To select the desired system setting, slide the  
SYSTEM switch in the lower right corner of  
the thermostat.  
Pub. No. 22-5183-01  
17  
69-12281  
href="
Heat and Cool Indicators  
Fan Setting  
Indicates a call for heating.  
Indicates a call for cooling.  
To select the desired fan setting, slide the  
FAN switch in the lower left corner of the  
thermostat.  
Hold  
Select  
PM  
TUE  
M18548  
Note: In the programming mode, the  
and indicate the system setting.  
FAN  
Auto On  
SYSTEM  
Cool Off Heat  
FAN SWITCH  
M18547  
FAN settings control the system fan as follows:  
Auto: Fan operates with equipment.  
On: Fan operates continuously.  
Pub. No. 22-5183-01  
69-12281  
18  
href="
Minimum Off-Timing  
CAUTION  
Equipment Damage Hazard.  
Your thermostat comes equipped with a  
minimum off-timer. At certain times during  
cooling, the system will not start up again for  
at least five minutes after it turns off (com-  
pressor is off and can’t be heard). This occurs  
when you change the SYSTEM switch  
Can cause permanent damage to  
the compressor or other equipment.  
To avoid possible equipment damage,  
do not operate cooling when outside  
temperature is below 50°F (10°C).  
See equipment manufacturer instruc-  
tions. To avoid possible compressor  
damage, allow the compressor to  
remain off for five minutes before  
restarting.  
position while the compressor is off or when  
you change the temperature setting, causing  
the compressor to turn off. The minimum off-  
timer is also triggered during power interrup-  
tion and power restoration. You will know the  
minimum off time is in effect by a flashing  
or  
on the display.  
Pub. No. 22-5183-01  
19  
69-12281  
href="
TROUBLESHOOTING GUIDE  
Symptom  
Possible Cause  
Action  
Display will not  
come on.  
Thermostat is not  
being powered.  
Check if the thermostat is mounted and  
latched on the wallplate–mount and latch the  
thermostat on the wallplate.  
Check if the circuit breaker is tripped–reset  
the circuit breaker.  
Check if the fuse is blown–replace the fuse.  
Check if the system switch is in the Off  
position–set to Heat or Cool.  
Temperature  
The upper or lower  
temperature limits  
were reached.  
Check that the temperature setpoints are  
within range:  
Heating: 50° to 99° F (10° to 37° C)  
Cooling: 50° to 99° F (10° to 37° C).  
settings will not  
change (Example:  
cannot set the  
heating higher or the  
cooling lower).  
(Contiuned)  
Pub. No. 22-5183-01  
69-12281  
20  
href="
Troubleshooting (Contiuned)  
Symptom  
Possible Cause  
Action  
Heating will not  
come on.  
No power to the Check that the setpoint is above room  
thermostat. temperature–reset temperature or wait for  
System selection is room temperature to fall.  
not set to Heat.  
Heating setpoint is  
below room  
Check if the circuit breaker is tripped–reset  
the circuit breaker.  
Check if the fuse is blown–replace the fuse.  
Check if the system switch at the equipment  
is in the Off position–set to Heat position.  
Wait five minutes for the system to respond.  
temperature.  
Cooling will not  
come on.  
No power to the Check that the setpoint is below room  
thermostat. temperature–reset temperature or wait for  
System selection is room temperature to rise.  
not set to Cool.  
Cooling setpoint is  
above room  
Check if the circuit breaker is tripped–reset  
the circuit breaker.  
Check if the fuse is blown–replace the fuse.  
Check if the system switch at the equipment  
is in the Off position–set to Cool position.  
Wait five minutes for the system to respond.  
temperature.  
Pub. No. 22-5183-01  
21  
69-12281  
href="
Troubleshooting (Contiuned)  
Symptom  
Possible Cause  
Action  
System on indicator Heating/cooling  
is lit, but equipment turns on  
Wait a minute after seeing the flame or  
snowflake and then check the registers.  
and  
no warm or cool air  
is coming from the  
registers.  
the fan when the  
equipment has  
reached the  
setpoint.  
System on indicator Minimum off timer is Wait five minutes until the minimum off timer  
or is flashing in effect. is complete.  
Pub. No. 22-5183-01  
69-12281  
22  
LIMITED WARRANTY  
Low Voltage Room Thermostats  
This warranty is extended by American Standard Inc., to the original purchaser and to any  
succeeding owner of the real property to which the Thermostat is originally affixed, and applies  
to products purchased and retained for use within the U.S.A. and Canada.  
If any part of your Thermostat fails because of a manufacturing defect within one year from the  
date of the original purchase, Warrantor will furnish without charge a new thermostat. Any local  
transportation, related service labor and diagnosis calls are not included.  
This warranty does not cover failure of your Thermostat if it is damaged while in your posses-  
sion or if the failure is caused by unreasonable use. In no event shall Warrantor be liable for  
incidental or consequential damages. In no event shall any implied warranty of merchandise  
or fitness for use exceed the term of the limited warranty stated above.  
Some states do not allow limitations on how long an implied warranty lasts or do not allow the  
exclusion or limitation of incidental or consequential damages, so the above limitation may not  
apply to you. This warranty gives you specific legal rights, and you may also have other rights  
which vary from state to state.  
Pub. No. 22-5183-01  
23  
69-12281  
href="
Parts will be provided by our factory organization or an authorized service organization in your area. All you  
need to do is look us up in the Yellow Pages or write to the address given below. If you wish further help or  
information concerning this warranty, contact:  
American Standard Inc.  
Troup Highway  
Tyler, TX 75711-9010  
Attention: Manager, After Sales Support  
CUSTOMER ASSISTANCE  
If, after reading this guide, you have any questions concerning the operation of your thermostat, please call  
the Thermostat Customer Assistance Helpline at 1-877-880-3381, Monday-Friday, 7:00 am-5:30 pm, Central  
time.  
For service, contact your local heating and cooling contractor.  
American Standard Inc.  
Pub. No. 22-5183-01  
® U.S. Registered Trademark  
Troup Highway  
Tyler, TX 75711-9010  
69-12281 Rev. 9-00 J.H. Printed in Mexico