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 adalton67 on May 24th, 2013
Bat Lo
I replaced the batteries. Now has no digital display. Was NOT set to "off" before batteries taken outAnything suggestions?
Current Answers
Related Honeywell T8112C Manual Pages
Owner's Manual - Page 1
All Rights Reserved
69-0862-4 Electronic Programmable Thermostat
Owner's Manual
® U.S. Registered Trademark © 2004 Honeywell International Inc.
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
... a lower temperature during heating season, and a higher temperature during cooling season.)
RETURN is the time the thermostat turns on the heating/cooling equipment after an energy saving period. For instructions on installing or replacing the batteries, refer to program your hand before you get up. (This will be programmed in your time and...
Owner's Manual - Page 4
...you can damage the keypad.
Fill in the times and temperatures you decide not to program the thermostat, it .
ature and your furnace response time, to give the furnace a head start to ... each. 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 probably be different for ...
Owner's Manual - Page 5
... 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°F (7°C).
5
69-0862-4
Owner's Manual - Page 6
..., RETURN, and SLEEP.
6
69-0862-4 To set the System switch to Off.
Repeat sequence for programming your new thermostat. IMPORTANT Batteries are required for Mon-Fri. Remove the battery door (on the display. Press Time keys until current day shows.
When inserting batteries, set the day, press and release the Set Clock/Day key again. Press Run Program...
Owner's Manual - Page 7
... 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 cancels itself at Cool, follow the same instructions as desired. Operating Your Thermostat
Using Programming Features
Temporarily Change temperature for SLEEP. After programming...
Owner's Manual - Page 8
Check Programs-Press Set Schedule key repeatedly to the normal program or the starting program-Press...to return to the program.
Check Current Temperature Setting-Press Run Program key once. Cancel a program-Press Set Schedule key until display shows desired temperature. Setting Fan Switch
Fan switching positions are: Auto: Normal setting for more efficient electronic air cleaning.
8
69...
Owner's Manual - Page 9
...making sure
the positive and negative terminals are off. Make sure the thermostat is set in the Off position.
3.
Setting System Switch
System switching positions control thermostat operation: Cool: Thermostat controls air conditioning
system. Purchase two AA alkaline batteries; Heat: Thermostat controls heating system. nonalkaline batteries do not last as long and can leak, causing damage to...
Owner's Manual - Page 10
Replace the battery door. Replace batteries as soon as possible after indicator starts flashing. 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. As batteries are completely dead, bAtLo indicator disappears, leaving the display completely blank and the...
Owner's Manual - Page 11
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. To remove batteries, press down on the left ends. See Programming Your Thermostat section for instructions.
11
69-0862-4 If the new batteries are dead or incorrectly installed and the thermostat has to be reprogrammed.
Owner's Manual - Page 12
... to reset thermostat. The setting lower than 45°F (7°C) or higher than range is reached. Insert backward for the period in question.
Remove batteries. Correctly replace batteries. Do not use anything abrasive on .
• Set the System switch to 31°C). 88°F (31°C) during programming. Reprogram, if necessary.
12
69-0862-4
Display does not...
Owner's Manual - Page 13
... or circuit breaker and replace or reset, if necessary.
• If display is blank or displays bAtLo, install fresh batteries.
• If temperature setting is higher than current temperature, and System On indicator is lit, contact your local dealer.
• Check that System switch on . If...
Cooling does not come on thermostat is set to expire.
•...
Owner's Manual - Page 14
... from Cool to the Cool position. If air conditioner does not come on (Cont)
Then...
• The thermostat has a built-in time delay on cooling. If the air conditioner comes on ). • If temperature setting is lower than current
temperature, and System On indicator is lit, contact your local dealer. • If...
Owner's Manual - Page 15
...; Allow time for up and the fan to 30 minutes after the recovery period.
• The thermostat is coming from setback or setup, setting and display temperature can differ for the furnace to heat up to come on thermostat display.
Too warm or too cool.
Then...
• Press Run Program key to within +/- 1°. If...
Owner's Manual - Page 16
If... bAtLo remains on display after fresh • Remove the batteries. Install fresh
batteries are installed.
Then...
alkaline batteries. Wait one hour. NOTICE
This equipment is a Class B digital apparatus, which complies with Canadian Radio Interference Regulations, CRC c.1374.
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69-0862-4
Owner's Manual - Page 17
..., and mail it (at Honeywell's option) within a reasonable period of purchase by the consumer. If the product is defective or malfunctions, Honeywell shall repair or replace it , postage prepaid, to the following address:
In the U.S: Honeywell Return Goods, Dock 4, MN 10-3860, 1985 Douglas Drive, Golden Valley, MN 55422.
In Canada...
Owner's Manual - Page 18
... limitations on how long an implied warranty lasts, so the above limitation may have any questions concerning this limitation may not apply to repair or replace the product within the terms stated above.
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