/ T8131C Programmable Thermostat OWNER’S GUIDE Weekday/Weekend Programmable Heat and/or Cool Thermostat and Mounting Plate 1 69-0908-1 69-0908—1
Welcome to the world of comfort and energy savings with your new Honeywell Trol-A-Temp® programmable thermostat. 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. Your new T8131 Thermostat is designed to provide you with reliable, precise temperature control.
Table of Contents Page Programming Thermostat ............................................................................................................... 4 Program Schedule .......................................................................................................................... 6 T8131C Programming Guide .......................................................................................................... 8 Setting Fan and System Switches ............................................
Use the personal Program Schedule for planning your program schedule of time and temperature settings for various times of the day. 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.
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.) 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.
Program Schedule HEATING PROGRAM SCHEDULE Weekdays WAKE 1 LEAVE RETURN 1 SLEEP Weekends WAKE 1 SLEEP 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).
COOLING PROGRAM SCHEDULE Weekdays WAKE 1 LEAVE RETURN 1 SLEEP Weekends WAKE 1 SLEEP 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).
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.
Warmer Ahead Press to program WAKE time and to program WAKE temperature for Mon-Fri. Cooler Back Repeat sequence for LEAVE, RETURN, and SLEEP. Press Weekend Schedule Ahead until SAT SUN, WAKE and SET appear on display. Press to program Back Warmer 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.
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 a temperature indefinitely—press Hold Temp , Warmer ; temperature cancels Cooler Run ; to cancel, press Program .
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.
Setting Fan and System Switches First set the fan switch. Then set the system 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. COOL: The thermostat controls your air conditioning system. Cool Off Heat OFF: Both the heating and air conditioning systems are off.
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.
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.
Troubleshooting Guide IF… Display will not come on. THEN… ■ 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 ■ The temperature setting limit was reached. The setting range is 45°F to 88°F (7°C to 31°C). than 45°F (7°C) or higher than 88°F (31°C) during programming. Temperature change occurs at the wrong times. ■ Verify the program times for the period.
Heating will not come on (Cont). ■ If temperature setting is higher than the current temperature and displays HEAT, contact Honeywell Customer Assistance at 1-800-468-1502. Cooling will not come on. ■ Check that the green LED is lit. ■ Check that the switch on the thermostat is set to COOL. ■ Check the system fuse or circuit breaker and replace or reset, if necessary. ■ The thermostat has a built-in time delay on cooling.
Cooling will not come on (Cont). ten minutes and displays COOL, contact the Honeywell Customer Assistance at 1-800-468-1502. The house is too warm or too cool. ■ Press PRESENT SETTING key to check the current temperature setting. ■ If desired, change the temperature setting. See page 5. SYSTEM ON indicator is lit, but no heat is coming from the registers. ■ Allow time for the furnace to heat up and the fan to come on before checking for heat at the register.
TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. AND CANADA Savings for Once-A-Day 10°F (5°C) decrease Savings for Twice-A-Day 10°F (5°C) decrease* Savings for 5°F (3°) summer increase Approximate percentage of energy cost savings 30% 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 North Bay Quebec St. John's Halifax Vancouver Thermostat patents pending.
Limited One-Year Warranty Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time.
Toll-free Customer Assistance For all questions concerning this thermostat, please read and follow the instructions. If additional assistance is needed, call Honeywell Customer Assistance toll-free at 1-800-468-1502, MondayFriday, 7:00 a.m.-5:30 p.m. Central time. Before you call, please have the following information available: Thermostat model number and date code, and type of heating/cooling system (for example, hot water, warm air, oil and gas). 69-0908—1 Rev. 5-96 J.S.
