Honeywell CT2800 Support Question
Honeywell CT2800 Support Question
Find answers below for this question about Honeywell CT2800.Need a Honeywell CT2800 manual? We have 1 online manual for this item!
Question posted by kotikmama on February 26th, 2015
Display Is Blank And Heat Not Working
I attempted to adjust the heat by turning it up a little and suddenly, the screen went blank. I replaced the batteries, which didn't work. I then tried to reset by turning batteries in opposite ways, still not working. Am I going to have to replace the thermostat?
Current Answers
Related Honeywell CT2800 Manual Pages
Owner's Manual - Page 1
...day) Programmable Heat and/or Cool Low Voltage (20 to the world of Contents
Installation ...2 Programming...12 Operation...18 Frequently Asked Questions ...22 Customer Assistance ...23 Limited Warranty ...24
® U.S. Your new thermostat will automatically control the temperature in your new Honeywell Programmable Thermostat. CT2800 Programmable Thermostat
INSTALLATION AND PROGRAMMING...
Owner's Manual - Page 2
....honeywell.com/yourhome or call Honeywell Customer Care at 1-800-468-1502.
Compatible with the CT2800, the table recommends an alternate Honeywell model. Installation
MERCURY SWITCH
INSTALLATION
Verify You Have Correct Thermostat
Fig. 1. M3701
Make sure that include warm air furnaces and hot water. Heating/Cooling System
Conventional Single stage systems that the...
Owner's Manual - Page 3
... after you have the following parts: • Thermostat and mounting plate • Labels • Screws and anchors • Installation and Programming Instructions
2. Multistage Conventional A heating or cooling system with CT2800?
Alternate Model
No
CT3600
No
CT3600
No
CT3611
No
See your heating and cooling systems are working properly. Gather the needed tools and supplies listed...
Owner's Manual - Page 4
... after Step 7. e. M20140
M19086
WIRES THROUGH WALL OPENING
• The old thermostat is attached
to the old
thermostat. M20133
✓Check your old thermostat (Fig. 2). Remove Old Thermostat
Fig. 2. Disconnect the wires from the old thermostat and wrap the wires around a pencil to the heating/cooling system, either at the furnace or at the fuse/circuit...
Owner's Manual - Page 6
... the fan. NOTE: These DIP switches are factory-set your new thermostat for a warm air, gas, or oil heating system. If you can install the batteries and program your heating system uses: F- ON 2 - ON
F
1 -
To install the batteries, see the Programming section.
69-1638-1
6 THERMOSTAT BACK
DISPLAY F DISPLAY C
3 - ON
F
1 - a. ON 3 - Use the FUEL SWITCH on the next page...
Owner's Manual - Page 7
... section.
Loosen terminal screws and slip each wire beneath its matching terminal (Fig 10). d.
b. Heating System Table
Type of System
Warm air, gas, or oil heating system with the corresponding terminal on the back of your old thermostat wire
with an efficiency rating under 90%. (The furnace efficiency rating should be on the...
Owner's Manual - Page 9
.... 13. d.
Install the batteries
Fig. 13. These wires are installed correctly, the digital display flashes all entries once, then begins to touch. Make sure that allow these wires to program the thermostat. c. Replace the battery door. M1719C
Fig. 14. REMOVING BATTERY DOOR
IMPORTANT: Batteries must be installed for programming and operation of your CT2800 Thermostat. e.
Owner's Manual - Page 10
... operate the fan using the fan ON switch, the CT2800 Thermostat will work with the operation of a heat pump or multistage system. Continue the installation procedure.
Contact your heating contractor for information about which programmable thermostat will not interfere with your system.
See the thermostat compatibility table for installation assistance.
Six or more wires...
Owner's Manual - Page 11
...
*Remove factory-installed jumper between R and Rc terminals in heat (B terminal).
You have a multistage heating/cooling system. You have a single-stage heat pump or zoning system.
Old thermostat terminals that do not match new thermostat terminals
Use the table below to New Thermostat Terminal
R, RH, 4, V
R*
Rc, R
Rc*
W, W1, H
W
Y, Y1, M
Y
G, F
G
O
Do not continue...
Owner's Manual - Page 12
...Temp
1
Fan
Auto On
System
Cool Off Heat
Descriptions
1 Fan switch-Selects automatic fan operation or fan on.
2 Set Schedule-Puts the thermostat into programming mode.
3 Set Clock/Day-...temperature or programmed temperature.
13
9 SYSTEM ON-An arrow displays when the heating/cooling system is running.
10 TEMPORARY-An arrow displays when a
14
temporary override is made to normal operating...
Owner's Manual - Page 13
...-1638-1
The program periods are
displayed (Fig. 19). Set Current Time and Day
Clock/Day
a. Press Clock/Day again.
Learn About Programming Features
Your CT2800 Thermostat allows you to two program periods...(Monday-Friday), and up to program schedules for both a heating season and a cooling season.
• During the heating season, you can set the normal room temperature higher and the...
Owner's Manual - Page 14
... programming, press Program .
LEAVE
The time when you decide not to leave your thermostat, it automatically controls heating at 68°F (20°C), and cooling at a comfortable temperature for this ...when you are regularly away from home. RETURN
The time between returning home and going to program times and temperatures for this period. You can Weekdays and weekend set...
Owner's Manual - Page 15
Write in the times and temperatures that you want to HEAT. Set the System switch to program for your heating schedule. Fig. 20. e. A blank schedule is displayed (Fig. 21). Press
once.
Set the Monday-Friday WAKE temperature by pressing
Fig. 21. Step 3. Heating Schedule
Program Period
Suggested Settings
Time Temp
WAKE 6:00 AM 70°F (21...
Owner's Manual - Page 16
... period and repeat steps h. for the next pro- h. Set the Saturday and Sunday WAKE temperature by pressing
Time
until desired temperature displays
(Fig. 24). Fig. 23. Press Schedule again to display a blank schedule for each weekday program period.
Schedule
g.
gram period (Fig. 22) and repeat steps d.
Press
Run Program
to set program. f. Set...
Owner's Manual - Page 17
... run after a short delay. Check System
SLEEP 10:00 PM 82°F (28°C)
Verify that your heating system works
a. Your heating system should start
and the fan should shut off.
Verify that your cooling system works
IMPORTANT: To avoid damaging the compressor in the times and temperatures you want to Auto.
Set the...
Owner's Manual - Page 18
... be off. g. OPERATION
Change Clock for Daylight/Standard Time
a. Run
c. Press Temp
until the correct time is displayed. NOTE:
When cooling setting is displayed. The time is changed, thermostat can delay up to five minutes before turning on air conditioner.
Press and hold Time
until the setting is 10°F (6°C) above room
temperature...
Owner's Manual - Page 19
...continuously. Dead
Replace the batteries immediately. Open the battery door.
If display is blank, batteries are off. Press on the left side of the thermostat. b.
Both the heating and air ...heating/cooling system is not operating.
c. Set the Fan switch first and then set to remove them. Switch Fan
Setting Auto
On
Result
A single-speed fan turns on the back of the batteries...
Owner's Manual - Page 20
... temporarily
Fig. 27. d.
If leaving home for longer than a month, change batteries before
next scheduled program period, press
Run Program
.
69-1638-1
20
NOTE: If "bAt Lo" continues to display after replacing the batteries, set the System switch to lack of battery power in thermostat.
Heating/cooling schedule you programmed resumes when next scheduled program period is...
Owner's Manual - Page 22
...176;F (7°C to reset thermostat.
Be sure AM and PM indications are fresh and installed correctly. Reprogram if necessary.
69-1638-1
22 Press
simultaneously.
Make sure the batteries are correct. display should come on . replace them as soon as possible. If "bAt Lo" continues to display after replacing batteries, set System switch to Off.
display should come on
•...
Owner's Manual - Page 23
... and SYSTEM ON arrow is displayed, thermostat is blank or displays "bAt Lo," install fresh batteries. Contact ac contractor. Press RUN PROGRAM to the thermostat.
23
69-1638-1 Type of the thermostat. Check that might adversely affect thermostat operation. Contact heating contractor for correct wiring and good connections.
If display is set to HEAT. If desired, change the...
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