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Honeywell T8112C Support Question

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Question posted by Dscustomcabinets on September 18th, 2014

Fan Switch

If I flip the switch to fan why don't it turn on do I have to press enter?

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Related Honeywell T8112C Manual Pages

Owner's Manual - Page 1

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

...display when you press the Set Schedule key. When deciding what time to set for various times of the day. When deciding what time to Maintaining Your Thermostat section. During weekends...is the time period you are available during cooling season.) RETURN is the time the thermostat turns on installing or replacing the batteries, refer to set for your furnace response time, to...

Owner's Manual - Page 4

...to give the furnace a head start to heat the house before you do not need to enter a time and temperature program for all periods if your schedule does not require 4 69-0862-4.... If you are sleeping. (For more comfortable sleeping, some people choose not to program the thermostat, it . When pressing the keys, use the ball of sharp fingernails or pencil points can set one schedule for weekdays...

Owner's Manual - Page 6

... Temp keys to program WAKE temperature for programming your new thermostat. Press Time keys until current time shows. When inserting batteries, set to Heat, press and release the Set Schedule key once. Press Run Program key. Heating Program With the System switch set the System switch to Off. Remove the battery door (on the display. NOTE...

Owner's Manual - Page 7

.... Operating Your Thermostat Using Programming Features Temporarily Change temperature for SLEEP. After programming, adjust the Fan and System switches, as for Sat...-Sun. The change ; to program WAKE temperature for the Heating Program. Use Time keys to program WAKE time and Temp keys to cancel sooner, press Run Program key. 7 69-0862-4 Press...

Owner's Manual - Page 8

...the normal program or the starting program-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 69-0862-4 Check Current Temperature Setting-Press Run Program key once. speed fan turns on low with the air conditioner...

Owner's Manual - Page 9

Setting System Switch System switching positions control thermostat operation: Cool: Thermostat controls air conditioning system. Make sure the thermostat is set in the Off position. 3. Purchase two AA alkaline batteries; AM TU LEAVE Fan Auto On FAN SWITCH System Cool Off Heat SYSTEM SWITCH M5783 1. nonalkaline batteries do not last as long and can leak, causing damage to remove the...

Owner's Manual - Page 10

... dead, bAtLo indicator 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...

Owner's Manual - Page 11

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. 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.

Owner's Manual - Page 12

... the period in question. Do not use anything abrasive on . • Set the System switch to Off. Reprogram, if necessary. 12 69-0862-4 Remove batteries. Then... Temperature display does... not go • The temperature setting limit is 45 to 88°F (7 to reset thermostat. Troubleshooting Guide If... The setting lower than 45°F (7°C) or higher than range is ...

Owner's Manual - Page 13

... setting is higher than current temperature, and System On indicator is lit, contact your local dealer. • Check that System switch on thermostat is set to Cool. Then... • Check that System switch on thermostat is blank or displays bAtLo, install fresh batteries. 13 69-0862-4 Allow a minimum of five minutes for time-guard...

Owner's Manual - Page 14

... than current temperature, and System On indicator is lit, move System switch from Cool to the Cool position. After ten minutes, return switch to Off for ten minutes. If... Allow at least five minutes ...If air conditioner does not come on (Cont) Then... • The thermostat has a built-in time delay on , the compressor could have reached its high-limit temperature protection and shut ...

Owner's Manual - Page 15

..., change the temperature setting. Then... • Press Run Program key to 30 minutes after the recovery period. • The thermostat is coming from setback or setup, setting and ... from the registers. See Programming Your Thermostat section. • Allow time for the furnace to heat up and the fan to come on thermostat display. Thermostat current temperature setting does not match the...