Honeywell T8112C Support Question
Honeywell T8112C Support Question
Find answers below for this question about Honeywell T8112C.Need a Honeywell T8112C manual? We have 1 online manual for this item!
Question posted by ttonyy99 on August 3rd, 2011
Cooling Or Heating Not Coming On When Required To
Unit comes on and off at different times. when setting range to cool it does not come on and after a while it does, its not consistent when you need it on or when you need it off. I replaced the battery and checked my ranges, Also it turns off premature before getting to setpoint. I hopes this helps.
Current Answers
Related Honeywell T8112C Manual Pages
Owner's Manual - Page 1
Registered Trademark © 2004 Honeywell International Inc. Electronic Programmable Thermostat
Owner's Manual
® U.S. All Rights Reserved
69-0862-4
Owner's Manual - Page 2
Table of Contents
Programming Your Thermostat 3 Program Schedule 5 Set Current Time/Day 6 Heating Program 6 Cooling Program 7
Operating Your Thermostat 7 Using Programming Features 7 Setting Fan Switch 8 Setting System Switch 9
Maintaining Your Thermostat 9 Installing Batteries 9
Troubleshooting Guide 12 Limited One-Year Warranty 17
2
69-0862-4
Owner's Manual - Page 3
... up. (This will be a higher temperature during heating season, and a lower temperature during cooling season.)
LEAVE is the time period you can be a lower temperature during heating season, and a higher temperature during workdays: WAKE, LEAVE, RETURN, and SLEEP. Programming Your Thermostat
When batteries are installed, your thermostat can set for an energy-saving temperature while you are...
Owner's Manual - Page 4
... the night.)
it automatically controls heating at 68°F (20°C) and cooling at 78°F (20°C), 24 hours a day. When pressing the keys, use the ball of sharp fingernails or pencil points can set one schedule for weekdays and another for weekends because your requirements will set for an energy-saving temperature while...
Owner's Manual - Page 5
... Schedule
Weekdays WAKE a LEAVE RETURNa SLEEP Weekends WAKE a SLEEP
Start Time
Heating Temperatureb
Cooling Temperatureb
a 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. b The temperatures cannot be set higher than 88°F (26°C) or lower than 45...
Owner's Manual - Page 6
...°C), and cooling at the bottom. Repeat sequence for programming your new thermostat. IMPORTANT Batteries are required for Mon-Fri. Use Time keys to program WAKE time and Temp keys to Heat, press and release the Set Schedule key once. To set time, press and release Set Clock/Day key once.
Press Time keys until current time shows.
Remove the battery door (on the...
Owner's Manual - Page 7
...
USE TO SET CURRENT DAY AND TIME
USE TO SET PROGRAM PERIOD
Fan Auto On
System Cool Off Heat
HOLD TEMP KEY
USE TO SET TIME LATER
USE TO SET COOLER TEMPERATURE
M8473
Cooling Program
WIth System switch at the next scheduled program change; After programming, adjust the Fan and System switches, as for SLEEP. Operating Your Thermostat
Using Programming...
Owner's Manual - Page 8
... and runs on automatically with the furnace. Setting Fan Switch
Fan switching positions are: Auto: Normal setting for more efficient electronic air cleaning.
8
69-0862-4 A single- Pressing the two Time keys together cancels the program. Permanently Change a program-Repeat the steps in the Heating Program or Cooling Program sections, as applicable. Hold a temperature indefinitely...
Owner's Manual - Page 9
...making sure
the positive and negative terminals are off. Purchase two AA alkaline batteries; Make sure the thermostat is set in the Off position.
3. Maintaining Your Thermostat
Installing Batteries
IMPORTANT Batteries must be installed for programming and operation of the thermostat and heating/cooling system. nonalkaline batteries do not last as long and can leak, causing damage to remove...
Owner's Manual - Page 10
... disappears, leaving the display completely blank and the heating and/or cooling system not operating.
10
69-0862-4 Fan Auto On
System Cool Off Heat
FAN SWITCH
SYSTEM SWITCH
M5782
After batteries are running low, bATLo indicator flashes for one to two months before batteries run out completely. Replace batteries as soon as possible after indicator starts flashing...
Owner's Manual - Page 11
See Programming Your Thermostat section for instructions.
11
69-0862-4
If the display is blank, the batteries are installed within 20 to 30 seconds of removing the old ones, the thermostat does not have to be reprogrammed. If the new batteries are dead or incorrectly installed and the thermostat has to be reprogrammed. To remove batteries, press down on the left ends.
Owner's Manual - Page 12
... 31°C). 88°F (31°C) during programming. Reprogram, if necessary.
12
69-0862-4 Troubleshooting Guide
If... Display does not come on the clips. Display should come on.
• Set the System switch to reset thermostat.
Remove batteries. Make sure the current day and time are correct. Do not use anything abrasive on .
• Make sure...
Owner's Manual - Page 13
... displays bAtLo, install fresh batteries.
13
69-0862-4
Allow a minimum of five minutes for time-guard protection to Cool.
Cooling does not come on . Then...
• Check that System switch on thermostat is set to expire.
• Check the system fuse or circuit breaker and replace or reset, if necessary.
• If display is set to Heat. If... Heating does not come on .
Owner's Manual - Page 14
If air conditioner does not come on (Cont)
Then...
• The thermostat has a built-in time delay on after changing the setting before the air conditioner starts.
&#...the air conditioner comes on ). • If temperature setting is lower than current
temperature, and System On indicator is lit, move System switch from Cool to the Cool position. Cooling does not come on cooling. or four-...
Owner's Manual - Page 15
... to come on thermostat display. See Programming Your Thermostat section.
• Allow time for the current setting and display temperature to differ occasionally.
• During recovery from the registers. Too warm or too cool.
Then...
• Press Run Program key to 30 minutes after the recovery period.
• The thermostat is normal for the furnace to heat up to check...
Owner's Manual - Page 16
Install fresh
batteries are installed. NOTICE
This equipment is a Class B digital apparatus, which complies with Canadian Radio Interference Regulations, CRC c.1374.
16
69-0862-4
Then... Wait one hour. If... alkaline batteries. bAtLo remains on display after fresh • Remove the batteries.
Owner's Manual - Page 17
... Drive, Golden Valley, MN 55422. If the product is defective or malfunctions, Honeywell shall repair or replace it , postage prepaid, 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 time.
If, at any time during the warranty period, the product is defective, (i) return it, with a bill of...
Owner's Manual - Page 18
... A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE TWO-YEAR DURATION OF THIS WARRANTY. This warranty gives you . Honeywell's sole responsibility shall be to repair or replace the product within the terms stated above limitation may not apply to you specific legal rights;
This warranty does not cover removal or reinstallation costs...
Similar Questions
T8112c1007 Is Not Working How Do I Replace It.
My honeywell t8112c1007 is not working how do I replace it. Not working how do I replace it and what...
My honeywell t8112c1007 is not working how do I replace it. Not working how do I replace it and what...
(Posted by alagrande 4 years ago)
Thermostat Will Not Trigger Heat After Replacing Batteries
My thermostat batteries died while away. I replaced them and it appears to be working but no matter ...
My thermostat batteries died while away. I replaced them and it appears to be working but no matter ...
(Posted by rfeldman5 7 years ago)
Honeywell T8602c Thermostat. It Says 'replace Batteries'.
I have replaced the batteries 3 times and it still says "Replace Batteries". Fan will go on, but the...
I have replaced the batteries 3 times and it still says "Replace Batteries". Fan will go on, but the...
(Posted by lauririvetti 9 years ago)
How To Set Up Honeywell Heat Pump Nonprogrammable Thermostat Rth3100c
(Posted by yanSjever 10 years ago)
How To Replace Battery In Thermostat
my thermostat digitial display is blank and might need new battery how to replace battery
my thermostat digitial display is blank and might need new battery how to replace battery
(Posted by wwebjenks 12 years ago)