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Honeywell T8131C Support Question

Honeywell T8131C Support Question

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Question posted by grantphillips51 on October 14th, 2020

Waited Over An Hour After Replacing Batteries But Can Not Get Rid Of Low Battery

display?

Current Answers

Answer #1: Posted by INIMITABLE on October 14th, 2020 2:37 PM
This answer was accepted by the poster of the original question.
INIMITABLE

Member since:
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Troubleshoot "Batt Lo"Step 1

Grip the face plate of the thermostat and pull it away from the wall plate to expose the batteries.

Step 2

Pull out the three AAA batteries.

Step 3

Put in three fresh AAA batteries. Make sure the positive and negative terminals on the battery are lined up with the positive and negative receptors on the thermostat.

Step 4

Replace the thermostat's cover. The display will no longer flash "Batt Lo."

Troubleshoot a Honeywell Programmable Thermostat that Won't ResetStep 1


I hope this is helpful? PLEASE "ACCEPT" and mark it "HELPFUL" to complement my little effort. Hope to bring you more detailed answers

-INIMITABLE

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

... of heating or air conditioning. Welcome 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 Your new T8131 Thermostat is designed to a comfortable level of comfort and energy savings with reliable, precise temperature control. Temperature control saves energy and allows you to awake (or...
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

...your program schedule of time and temperature settings for normal thermostat operation; View these periods individually on the wall. Batteries are available during cooling season.) 4 69-0812-2 See Installing Batteries section. Four time periods are not required for various ... will be programmed in memory if ac power is mounted on the display when you press the Set Schedule key.
Owner's Manual - Page 5

...use the ball of your furnace response time, to give the furnace a head start to program the thermostat, it . If you do not need to raise the cool temperature during programming, just press the ...Run Program key, and 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...
Owner's Manual - Page 7

..., based on outside temperature and furnace response time, to give your furnace a head start 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 NOTE: If you decide not to heat the house. 2 The temperatures cannot be...
Owner's Manual - Page 8

T8131C Programming Guide NOTE: Batteries are required only for armchair programming, and to OFF. When replacing batteries, set the system switch to retain your personal temperature schedule in Installing Batteries section. Remove the battery door (on display. 8 69-... and SET appear on the thermostat left side) using a coin at HEAT, press and release Weekday Schedule once.
Owner's Manual - Page 9

... Warmer Press to program WAKE time and to program WAKE temperature for SLEEP. Ahead Press Weekend Schedule until SAT SUN, WAKE and SET appear on display.
Owner's Manual - Page 12

... on high with the air conditioner and runs on automatically with the furnace. COOL: The thermostat controls Cool Off Heat your heating system. 12 69-0812-2 Auto On Use for improved .... Cool Off Heat HEAT: The thermostat controls Cool Off Heat your air conditioning system. Then set the fan switch. A single-speed fan turns on low with the air conditioner or furnace.
Owner's Manual - Page 13

... retain your personal temperature schedule in memory if ac power is set to the OFF position. • Use a coin to remove the battery door. 13 REMOVING BATTERY DOOR M1719C 69-0812-2 nonalkaline batteries do not last as long. We recommend Energizer® batteries. • Make sure the thermostat is lost. • Use two AA alkaline...
Owner's Manual - Page 14

...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 30 seconds of the batteries. INSTALL TWO AA ALKALINE BATTERIES AS SHOWN POWER...
Owner's Manual - Page 15

... to the left of the LCD is lit, indicating the thermostat is 45°F to 88°F (7°C to HEAT. Troubleshooting Guide IF... Display will not go lower s The temperature setting limit was reached. s Check the system fuse or circuit breaker and replace or reset, if necessary. 15 69-0812-2 Reprogram if necessary...
Owner's Manual - Page 16

... circuit breaker and replace or reset, if necessary. If the air conditioner does not come on (Cont). s If temperature setting is higher than current temperature and displays COOL, move the system switch from COOL to COOL. If the air conditioner comes on cooling. Heating will not come on the thermostat is lit. s Check...
Owner's Manual - Page 17

... up and the fan to come on display after fresh batteries are installed. s Remove batteries. The furnace or air conditioner On cycle is needed, call Honeywell Customer Assistance at 1-800-468-1502. s If desired, change the temperature setting. s Contact your heating or air conditioner contractor. Wait one hour. Cooling will not come on before checking...
Owner's Manual - Page 18

John's Halifax Vancouver Thermostat patents pending. Buffalo Cleveland Milwaukee Denver Des Moines Omaha Salt Lake City Boston Chicago Detroit Pittsburgh Indianapolis Cincinnati Kansas City St. San Diego M2416A 18 ...
Owner's Manual - Page 19

...during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywell's option) within the terms stated above limitation may not apply ...or reinstallation costs. Limited One-Year Warranty Honeywell warrants this product, excluding battery, to be to repair or replace the product within a reasonable period of time. In Canada, write Retail...
Owner's Manual - Page 20

...-468-1502, MondayFriday, 7:00 a.m.-5:30 p.m. Printed in Mexico Copyright © 1996 Honeywell Inc. 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). Toll-free Customer Assistance For...

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