T8131C Programmable Thermostat OWNER'S GUIDE Weekday/Weekend Programmable Heat and/or Cool Thermostat and Mounting Plate 1 69-0812-2 69-0812--2 Welcome to the world of comfort and energy savings with your new Honeywell programmable thermostat. Your new T8131 Thermostat is designed to provide you with reliable, precise temperature control. By following the simple programming instructions in this manual, your thermostat will automatically control the temperature in your home. Temperature control saves energy and allows you to awake (or return home) to a comfortable level of heating or air conditioning. Direct questions concerning the operation of this thermostat to Honeywell Customer Assistance at 1-800-468-1502, Monday-Friday, 7:00 a.m.-5:30 p.m., Central time. 2 69-0812--2 Table of Contents Page Programming Thermostat ............................................................................................................... 4 Program Schedule .......................................................................................................................... 6 T8131C Programming Guide .......................................................................................................... 8 Setting Fan and System Switches .................................................................................................. 12 Installing Batteries ........................................................................................................................... 13 Troubleshooting Guide .................................................................................................................... 15 Limited One-Year Warranty .................................................................................... Inside Back Cover 3 69-0812--2 Programming Thermostat NOTE: When batteries are installed, your T8131 Thermostat can be programmed in your hand (armchair programming), or when it is mounted on the wall. Batteries are not required for normal thermostat operation; however, installed batteries are recommended to retain your personal temperature program in memory if ac power is lost. See Installing Batteries section. When you program the thermostat, set one schedule for weekdays and another for weekends, because your temperature requirements probably vary. (During weekends, only the WAKE and SLEEP time periods are available.) Use the personal Program Schedule for planning your program schedule of time and temperature settings for various times of the day. Four time periods are available during weekdays --WAKE, LEAVE, RETURN, and SLEEP. View these periods individually on the display when you press the Set Schedule key. Select WAKE if you want the house at a comfortable temperature when you get up, while you get ready for work or school. When deciding what time to set for your WAKE period, include extra lead time, depending on the outside temperature and your furnace response time, to give the furnace a head start to heat the house before you get up. (This will be a higher temperature during heating season, or a lower temperature during cooling season.) 4 69-0812--2 Select LEAVE if you want an energy-saving temperature while you are away at work or school. (This will be a lower temperature during heating season, or a higher temperature during cooling season.) Select RETURN if you want the house at a comfortable temperature for activities before bedtime. When deciding what time to set for your RETURN period, include extra lead time, depending on the outside temperature and your furnace response time, to give the furnace a head start to heat the house before you arrive home. (Again, higher for heating or lower for cooling.) Select SLEEP if you want an energy-saving temperature while you are sleeping. (For more comfortable sleeping, some people choose not to raise the cool temperature during the night.) 5 Fill in the times and temperatures you desire for weekdays and weekends. If you decide not to program the thermostat, it automatically controls heating at 68°F (20°C) and cooling at 78°F (26°C), 24 hours a day. Also, you do not need to enter a time and temperature program for all periods if your schedule does not require it. For example, a house that is occupied during weekdays would not require programs for LEAVE and RETURN. When pressing the keys, use the ball of your finger or a soft pencil eraser. NOTE: Using sharp fingernails or pencil points can damage the keypad. If you make an error at any time during programming, just press the Run Program key, and continue again at the last step. 69-0812--2 Program Schedule HEATING PROGRAM SCHEDULE Weekdays WAKE 1 LEAVE RETURN 1 SLEEP Weekends WAKE 1 SLEEP 1 Start Time Heating Temperature 2 WAKE and RETURN start times should include extra lead time, based on outside temperature and furnace response time, to give your furnace a head start to heat the house. 2 The temperatures cannot be set any higher than 88°F (31°C) or any lower than 45°F (7°C). 6 69-0812--2 COOLING PROGRAM SCHEDULE Weekdays WAKE 1 LEAVE RETURN 1 SLEEP Weekends WAKE 1 SLEEP 1 Start Time Heating Temperature 2 WAKE and RETURN start times should include extra lead time, based on outside temperature and furnace response time, to give your furnace a head start to heat the house. 2 The temperatures cannot be set any higher than 88°F (31°C) or any lower than 45°F (7°C). NOTE: If you decide not to program the thermostat, it automatically controls heating at 68°F (20°C) and cooling at 78°F (26°C), 24 hours a day. 7 69-0812--2 T8131C Programming Guide NOTE: Batteries are required only for armchair programming, and to retain your personal temperature schedule in memory if ac power is lost. When replacing batteries, set the system switch to OFF. Remove the battery door (on the thermostat left side) using a coin at the bottom. Follow instructions in Installing Batteries section. Set Current Time/Day To set time, press and release Set Set Clock/Day Ahead once, and press Back until current time shows; to set Run until current day shows; then press Program . Ahead Back day, press and release Clock/Day again, and press Heating Program With system switch at HEAT, press and release on display. Weekday Schedule once. WAKE, MON-FRI and SET appear 8 69-0812--2 Ahead Warmer Press Back to program WAKE time and Cooler to program WAKE temperature for Mon-Fri. Repeat sequence for LEAVE, RETURN, and SLEEP. Weekend Schedule Ahead Press until SAT SUN, WAKE and SET appear on display. Press Back Warmer to program WAKE time and press SLEEP. to program WAKE temperature for Sat-Sun. Repeat sequence for Cooler Cooling Program With system switch at COOL, follow the same instructions as for the Heating Program. Run After programming, adjust fan and system switches, as desired. Press and release Program to start the program. 9 69-0812--2 A quick guide for operating or making changes follows: NOTE: Set system switch to HEAT or COOL to perform the following: Warmer Temporarily Change temperature for current period only--press Run itself at next scheduled change; to cancel sooner, press Program . Hold Temp , ; temperature cancels Cooler Warmer Cooler Hold a temperature indefinitely--press Run ; to cancel, press Program . Check Current Temperature Setting--press Weekday Schedule Weekend Schedule Present Setting . Check Programs--press Run press Program . then repeatedly to see each time and temperature; then 10 69-0812--2 Cancel a program--press press Clear Weekday Schedule then Weekend Schedule until program to cancel shows; then . Check Usage -- press Usage to determine length of time heat or air conditioning has been on since midnight; press again for yesterday's usage, and again for cumulative usage. Press Clear Run to clear cumulative reading, if desired; then press Program . Permanently Change a program--repeat steps in Heating Program or Cooling Program sections (pages 5 and 6), as applicable. Run Return to normal program or start program --press Program . 11 Questions? Call Honeywell Customer Assistance 1-800-468-1502. 69-0812--2 Setting Fan and System Switches First set the fan switch. Auto On AUTO: Normal setting for most homes. A single-speed fan turns on automatically with the air conditioner or furnace. A two-speed fan usually runs on high with the air conditioner and runs on low with the furnace. Then set the system switch. COOL: The thermostat controls your air conditioning system. OFF: Both the heating and air conditioning systems are off. HEAT: The thermostat controls your heating system. Cool Off Heat Cool Off Heat Auto ON: The fan runs continuously. Use for improved air circulation during special occasions or for more efficient electronic air cleaning. On Cool Off Heat 12 69-0812--2 Installing Batteries IMPORTANT Batteries are required only for armchair programming and to retain your personal temperature schedule in memory if ac power is lost. · Use two AA alkaline batteries; nonalkaline batteries do not last as long. We recommend Energizer® batteries. · Make sure the thermostat is set to the OFF position. · Use a coin to remove the battery door. REMOVING BATTERY DOOR M1719C 13 69-0812--2 To remove the batteries, press down on the left ends of the batteries. If you insert new batteries within 20 to 30 seconds of removing the old ones, the thermostat does not require reprogramming. However, if the display is blank, the batteries are dead or incorrectly installed and the thermostat requires reprogramming. · Install the fresh batteries, as shown, making sure positive and negative terminals are oriented correctly. · Replace the battery door. · Replace the batteries once a year to assure memory retention if ac power is lost. INSTALL TWO AA ALKALINE BATTERIES AS SHOWN POWER M9203 14 69-0812--2 Troubleshooting Guide IF... Display will not come on. THEN... s Check that the green light emitting diode (LED) located to the left of the LCD is lit, indicating the thermostat is powered properly. Temperature display will not go lower s The temperature setting limit was reached. The setting than 45°F (7°C) or higher than 88°F range is 45°F to 88°F (7°C to 31°C). (31°C) during programming. Temperature change occurs at the wrong times. Heating will not come on. s Verify the program times for the period. Be sure that AM and PM indications are correct. Make sure the current day and time are correct. Reprogram if necessary. s Check that the green LED is lit. s Check that the switch on the thermostat is set to HEAT. s Check the system fuse or circuit breaker and replace or reset, if necessary. 15 69-0812--2 Heating will not come on (Cont). s If temperature setting is higher than the current temperature and displays HEAT, contact Honeywell Customer Assistance at 1-800-468-1502. s Check that the green LED is lit. s Check that the switch on the thermostat is set to COOL. s Check the system fuse or circuit breaker and replace or reset, if necessary. s The thermostat has a built-in time delay on cooling. Allow five to ten minutes after changing the setting before the air conditioner starts. s If temperature setting is lower than current temperature and displays COOL, move the system switch from COOL to OFF for ten minutes. After ten minutes, return the switch to the COOL position. If the air conditioner comes on, the compressor could have reached its high limit temperature protection and shut down. If the air conditioner does not come on after the 16 69-0812--2 Cooling will not come on. Cooling will not come on (Cont). The house is too warm or too cool. ten minutes and displays COOL, contact the Honeywell Customer Assistance at 1-800-468-1502. s Press PRESENT SETTING key to check the current temperature setting. s If desired, change the temperature setting. See page 5. s Allow time for the furnace to heat up and the fan to come on before checking for heat at the register. s Contact your heating or air conditioner contractor. If further assistance is needed, call Honeywell Customer Assistance at 1-800-468-1502. s Be aware that it is normal for the current setting and display temperature to differ occasionally. s Remove batteries. Wait one hour. Install fresh alkaline batteries. 17 69-0812--2 SYSTEM ON indicator is lit, but no heat is coming from the registers. The furnace or air conditioner On cycle is too short or too long. The current thermostat setting does not match the display temperature. bAt Lo remains on display after fresh batteries are installed. TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. AND CANADA Savings for Once-A-Day 10°F (5°C) decrease 30% Savings for Twice-A-Day 10°F (5°C) decrease* Savings for 5°F (3°) summer increase Approximate percentage of energy cost savings 28% 26% 24% 22% 20% 18% 16% 14% 12% 10% 8% 6% 4% 2% Minneapolis St. Paul Montreal Ottawa Toronto Edmonton Regina Winnipeg Calgary Moncton N ...