Trane TAYSTAT 540 Owner's Manual
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Trane TAYSTAT 540 Owner's Manual

Programmable heat-pump thermostat
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Programmable Heat-Pump Thermostat
TAYSTAT 540
OWNER'S GUIDE
Pub. No. 22-5185-01
69-1229

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Summary of Contents for Trane TAYSTAT 540

  • Page 1 Programmable Heat-Pump Thermostat TAYSTAT 540 OWNER’S GUIDE Pub. No. 22-5185-01 69-1229...
  • Page 2 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: Program up to four time periods and temperature settings to complement your lifestyle.
  • Page 3 Your thermostat displays the current day, time, period, temperature and system ( for cooling) in normal mode. In programming mode, only the setting or settings being programmed display. For example “Sa Su” (Saturday Sunday) displays while programming the weekend schedule. All settings are explained below: SET DISPLAYS WHILE SETTING THE CLOCK.

  • Page 4: Clock

    PROGRAMMING YOUR THERMOSTAT CLOCK Setting the Current Day and Time To set or reset the current day and time, follow these instructions. IMPORTANT Always press the keys with your fingertip or similar blunt tool. Sharp objects like pen and pencil points will damage the keyboard.
  • Page 5 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).
  • Page 6 RETURN 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.
  • Page 7 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 Wake 6:00 AM...
  • Page 8 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. Period Wake Leave Return Sleep Table 2. Your Weekday Schedule. Heating Start Time Temperature...
  • Page 9 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. Period 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).
  • Page 10 Setting the Weekday Program IMPORTANT Always press the keys with your fingertip or similar blunt tool. Sharp objects like pen and pencil points will damage the keyboard. 1. Slide the SYSTEM switch to the setting you want to program (Heat or Cool). Throughout programming, the thermo- stat displays a flame snowflake...
  • Page 11 2. Set weekday Wake time and tempera- ture. Press Select four times. Press to set Wake time. Note: Schedule times are programmable in increments of 15 minutes. For each press, the time increases or decreases by 15 minutes. Press Select. Press set Wake temperature.
  • Page 12 Press Select. Press set Leave temperature. 4. Set weekday Return time and tempera- ture. Press Select. Press set Return time. M17312 5. Set weekday Sleep time and tempera- ture. M12628 Press Select. Press set Return temperature. M17314 Press Select. Press set Sleep time.
  • Page 13 Press Select. Press set Sleep temperature. IMPORTANT: Before pressing another key, continue with Setting the Weekend Program. Setting the Weekend Program Note: For initial programming, you must set the weekday schedule as shown in Setting the Weekday Program before you can access weekend program- ming.
  • Page 14 Press Select. Press set Wake temperature. Example shows Cool setting. Note: When setting the Weekend Program, the days Sa Su display. 2. Set weekend Leave time and tempera- ture. M17318 Press Select. Press Leave time. M17319 Press Select. Press set Leave temperature. M17320 Pub.
  • Page 15 3. Set weekend Return time and tempera- ture. Press Select. Press set Return time. Press Select. Press set Return temperature. 4. Set weekend Sleep time and tempera- ture. M17321 M17322 Press Select. Press set Sleep time. M17323 Press Select. Press set Sleep temperature.

  • Page 16: Temporary Temperature Hold

    5. Press Select. End displays. 6. Return to Step 1., Setting the Week- day Program to program the opposite mode, (heating) or Your weekday and weekend schedules are now programmed. Temporary Temperature Hold 1. Press temporary temperature. M17325 Note: M17300 (cooling).

  • Page 17: System Setting

    Indefinite Temperature Hold The Hold key allows you to hold a tempera- ture indefinitely. When Hold is active, Hld displays continuously. 1. Press Hold. 2. Press key to set indefinite temperature setting. 3. To cancel, press Hold and wait five seconds.

  • Page 18: Fan Setting

    SYSTEM settings control the thermostat operation as follows: Cool: Normal setting for months when your home needs cooling (air condition- ing). Digital display shows a snowflake when cooling is on. Off: Both heating and cooling are off. Heat: Normal setting for months when your home needs heating.

  • Page 19: Emergency Heat

    Auto: Normal setting for most homes. Some systems may delay the fan turning on and off with the equip- ment. The fan runs continuously. Use for improved air circulation and air quality. Auto On SWITCH Emergency Heat The Emergency Heat feature allows you to “turn on”...

  • Page 20: Minimum Off-Timing

    Minimum Off-Timing Your thermostat comes equipped with a minimum off-timer. At certain times during heating or cooling, the system will not start up again for at least five minutes after it turns off (compressor is off and can’t be heard). This occurs when you change the SYSTEM switch position while the compressor is off or when you change the temperature setting, causing...

  • Page 21: Troubleshooting Guide

    TROUBLESHOOTING GUIDE Symptom Possible Cause Display will not Thermostat is not come on. being powered. Temperature The upper or lower settings will not temperature limits change (Example: were reached. cannot set the heating higher or the cooling lower). Action Check if the thermostat is mounted and latched on the wallplate–mount and latch the thermostat on the wallplate.
  • Page 22 Troubleshooting (Contiuned) Symptom Possible Cause Heating will not No power to the come on. thermostat. System selection is not set to Heat. Heating setpoint is below room temperature. Cooling will not No power to the come on. thermostat. System selection is not set to Cool.
  • Page 23 Troubleshooting (Contiuned) Symptom Possible Cause System on indicator Heating/cooling is lit, equipment turns on but no warm or cool the fan when the air is coming from equipment has the registers. reached the setpoint. System on indicator Minimum off timer is in effect.

  • Page 24: Limited Warranty

    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.

  • Page 25: Customer Assistance

    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.
  • Page 26 Pub. No. 22-5185-01 69-1229...
  • Page 27 Pub. No. 22-5185-01 69-1229...
  • Page 28 Pub. No. 22-5185-01 ® U.S. Registered Trademark 69-1229 6-99 G.H. Printed in Mexico American Standard Inc. Troup Highway Tyler, TX 75711-9010...

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