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Question posted by eri1834 on April 21st, 2011

T8131c Would Not Turn Off Furnace

T8131C set to auto heat with temp set to 69F. Furnace continued to heat house and when it reached 78F I turned furnace turned off by setting the cool/off/heat switch to off.

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Related Honeywell T8131C Manual Pages

Owner's Manual - Page 1

T8131C Programmable Thermostat OWNER'S GUIDE Weekday/Weekend Programmable Heat and/or Cool Thermostat and Mounting Plate 1 696-90-801821-2-2

Owner's Manual - Page 2

... awake (or return home) to a comfortable level of heating or air conditioning. Welcome to the world of comfort and energy savings with reliable, precise temperature control. By following the simple programming instructions in your home. Temperature control saves energy and allows you with your thermostat will automatically control the temperature in this...

Owner's Manual - Page 3

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

Owner's Manual - Page 4

...Thermostat can be a higher temperature during heating season, or a lower temperature during weekdays -WAKE, LEAVE, RETURN, and SLEEP. View these periods individually on the outside temperature and your furnace response time, to give the furnace...recommended to heat the house before you program the thermostat, set for normal thermostat operation; When deciding what time to set one ...

Owner's Manual - Page 5

...If you decide not to raise the cool temperature during weekdays would not require programs for cooling.) Select SLEEP if you want an ...continue again at 78°F (26°C), 24 hours a day. 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...

Owner's Manual - Page 6

... Weekdays WAKE 1 LEAVE RETURN 1 SLEEP Weekends WAKE 1 SLEEP Start Time Heating Temperature 2 1 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...

Owner's Manual - Page 7

... not 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 1 WAKE and RETURN start times should include extra lead time, based on outside temperature and furnace response...

Owner's Manual - Page 8

... set the system switch to OFF. then press Run Program . WAKE, MON-FRI and SET appear on the thermostat left side) using a coin at HEAT, press and release Weekday Schedule once. Remove the battery door (on display. 8 69-0812-2 Follow instructions in memory if ac power is lost. When replacing batteries, set time, press and release Set...

Owner's Manual - Page 9

... the Heating Program. Back Cooler Repeat sequence for SLEEP. Repeat sequence for LEAVE, RETURN, and SLEEP. Cooler Cooling Program With system switch at COOL, follow the same instructions as desired. Ahead Warmer Press to program WAKE time and to program WAKE temperature for Sat-Sun. Ahead Press Weekend Schedule until SAT SUN, WAKE and SET...

Owner's Manual - Page 10

...Warmer Hold a temperature indefinitely-press Hold Temp , ; to see each time and temperature; Check Programs-press Weekday Schedule then Weekend Schedule repeatedly to cancel sooner, press Run Program . ; to perform the following: Warmer Temporarily Change temperature for operating or making changes follows: NOTE: Set system switch to HEAT or COOL to cancel, press Run Program...

Owner's Manual - Page 11

... to clear cumulative reading, if desired; Return 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. Permanently Change a program-repeat steps in Heating Program or Cooling Program sections (pages 5 and 6), as applicable. Call Honeywell Customer Assistance 1-800-468-...

Owner's Manual - Page 12

...the furnace. COOL: The thermostat controls Cool Off Heat your heating system. 12 69-0812-2 ON: The fan runs continuously. Cool Off Heat HEAT: The thermostat controls Cool Off Heat your air conditioning system. A single-speed fan turns on low with the air conditioner or furnace. Then set the fan switch. OFF: Both the heating and air conditioning systems are off. AUTO...

Owner's Manual - Page 13

... for armchair programming and to remove the battery door. 13 REMOVING BATTERY DOOR M1719C 69-0812-2 We recommend Energizer® batteries. • Make sure the thermostat is set to the OFF position. • Use a coin to retain your personal temperature schedule in memory if ac power is lost. • Use two AA...

Owner's Manual - Page 14

... batteries within 20 to assure memory retention if ac power 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. •... batteries, press down on the left ends of removing the old ones, the thermostat does not require reprogramming.

Owner's Manual - Page 15

s Check that the switch on the thermostat is powered properly. Temperature display will not come on . Temperature change ... to 88°F (7°C to HEAT. Heating will not come on . The setting than 45°F (7°C) or higher than 88°F range is lit. Display will not go lower s The temperature setting limit was reached. s Verify the program times for ...

Owner's Manual - Page 16

... temperature and displays COOL, move the system switch from COOL to the COOL position. s The thermostat has a built-in time delay on , the compressor could have reached its high limit temperature protection and shut down. s If temperature setting is lit. Cooling will not come on the thermostat is lower than the current temperature and displays HEAT, contact Honeywell Customer...

Owner's Manual - Page 17

s Contact your heating or air conditioner contractor. s Remove batteries. The furnace or air conditioner On cycle is needed, call Honeywell Customer Assistance at 1-800-468-1502. The current thermostat setting does not match the display temperature. If further assistance is too short or too long. bAt Lo remains on (Cont). ten minutes and displays COOL, contact...

Owner's Manual - Page 18

Buffalo Cleveland Milwaukee Denver Des Moines Omaha Salt Lake City Boston Chicago Detroit Pittsburgh Indianapolis Cincinnati Kansas City St. John's Halifax Vancouver Thermostat patents pending. Approximate percentage of these savings). Paul Montreal Ottawa Toronto Edmonton Regina Winnipeg Calgary Moncton North Bay Quebec St. San Diego M2416A 18 69-...

Owner's Manual - Page 20

... toll-free at 1-800-468-1502, MondayFriday, 7:00 a.m.-5:30 p.m. If additional assistance is needed, 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). Central time. Printed in Mexico Copyright © 1996 Honeywell Inc. Toll...