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Honeywell CT2800 Support Question

Honeywell CT2800 Support Question

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Question posted by lavirus on June 18th, 2011

Battery Replacement Problem

I bought new energizer max to replace my old one in Honeywell ct2800 that was saying low Bat after replacing on the off position and switching on I saw the time for one second then it went back to bat low , it also doesnt allow me to set time or program, these are new batteries please help resolve the problem.

Current Answers

Answer #1: Posted by jindogae81 on October 13th, 2012 10:42 AM
jindogae81

Member since:
October 13th, 2012

Points: 30
130
points
Display shows flashing “bAt Lo.”

• The batteries are low; replace them as soon as possible.
• If “bAt Lo” continues to display after replacing batteries, set System switch
to OFF and insert batteries backward for 5-10 seconds. Replace batteries
correctly; display should come on.

Related Honeywell CT2800 Manual Pages

Owner's Manual - Page 1

...new Honeywell Programmable Thermostat. Registered Trademark Copyright © 2003 Honeywell International Inc. Weekday/Weekend (5-day/2-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. All Rights Reserved 69-1638-1 CT2800...
Owner's Manual - Page 2

... SWITCH INSTALLATION Verify You Have Correct Thermostat Fig. 1. If you are removing an old thermostat that include warm air furnaces and hot water. Alternate Model Yes No CT1950 for instructions regarding recycling and the proper disposal of thermostat is the correct thermostat for your system, visit us on the Web at www.honeywell.com/yourhome or call Honeywell...
Owner's Manual - Page 3

... properly. Honeywell recommends Energizer® • Wire cutter/stripper or sharp knife. Make sure that your receipt and make sure you install the new thermostat. IMPORTANT:... CT3611 No See your new thermostat. Required Tools and Supplies Optional Tools • Two AA alkaline batteries. Heating/Cooling System Steam A steam boiler with CT2800? Multistage Conventional A heating...
Owner's Manual - Page 4

... labels, mark wires with wires attached to keep them from the wall, but do not match letters on the old thermostat (Fig. 3). f. d. M20140 M19086 WIRES THROUGH WALL OPENING • The old thermostat is attached to on old thermostat terminals, see special wiring instructions section after Step 7. Do not label using colors. Step 2. b. Fig. 3. Disconnect the wires...
Owner's Manual - Page 5

Separate the mounting plate from the thermostat using a coin, as shown in drywall, gently tap the anchors (provided) into each of ... Check your progress The mounting plate is now mounted on the wall. Install Mounting Plate Fig. 5. b. e. g. Step 3. Position the mounting plate on the wall and should look like Fig. 7. Reposition the mounting plate over the holes, pull the wires through...
Owner's Manual - Page 6

... POSITION POSITION 1 - c. You can wait until the thermostat is set your type of heating system allows it to display the temperature in the temperature of heating system. NOTE: This setting enables proper fan operation. NOTE: These DIP switches are factory-set your new thermostat for your new thermostat for a warm air, gas, or oil heating system. To program the thermostat...
Owner's Manual - Page 7

... Switches 1 and 2 Use factory setting 1-On; 2-On 1-Off; 2-On Fuel Switch F F 1-Off; 2-On F 1-On; 2-Off E Step 5. Using the labels on the wires, match letter of your old thermostat ... G Y W R NOTE: If letters on old thermostat terminals do not match letters on new thermostat terminals, all old wires may not need connecting to new thermostat. Heating System Table Type of System Warm air,...
Owner's Manual - Page 8

e. Press the lower edge of the case to latch the bottom of the mounting plate (Fig. 11). Mount Thermostat Fig. 11. f. Align the tabs at the top of the thermostat with the tabs at the top of the thermostat (Fig. 12) M20130 M20131 69-1638-1 8 Step 6. Fig. 12.
Owner's Manual - Page 9

... heating/cooling system. a. Make sure that the positive and negative termi- Using a coin, open the battery door as marked inside the battery case. Install the batteries. Replace the battery door. e. Remove the clear plastic label from each other to avoid damaging your progress When the batteries are connected to your new CT2800 Thermostat and must be insulated from the digital...
Owner's Manual - Page 10

...old thermostat, do not label them where they will work with your system. Five wires connected to the C or C1 terminals), your heating/ cooling system is most likely a variation of a heat pump or multistage system. M20127 Thermostat C Terminal This thermostat...the fan ON switch, the CT2800 Thermostat will not interfere with such systems and should be returned to your new thermostat. Tape off...
Owner's Manual - Page 11

... cool (O terminal) or changeover in 5-wire systems. 11 69-1638-1 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 B installation C, X, B W2, H2 Y2 Do not connect Do not continue...
Owner's Manual - Page 12

... 2 Schedule Hold 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-Sets the clock and day. 4 Time Ahead and Back-Sets the time 9 ahead and back. 10 5 Program periods-Current program period or period...
Owner's Manual - Page 13

... is displayed (Fig. 18). Fig. 18. Run e. The program periods are displayed (Fig. 19). b. d. Learn About Programming Features Your CT2800 Thermostat allows you to two program periods for the weekends (Saturday and Sunday). The time is displayed (Fig. 17). Press Program once. Step 2. For each season, you will be lower and the energy-saving...
Owner's Manual - Page 14

...and weekend Programming Tips • You do not need to program times and temperatures for this period. If you decide not to program your thermostat, it automatically controls heating at 68°F (20°C), ...; The temperatures cannot be set any higher than 88°F (31°C) or any time during programming, press Program . If you decide not to program weekend schedules, the temperature ...
Owner's Manual - Page 18

...once. Set the System switch to Cool, and the Fan switch to Auto. This delay protects the compressor. Press Temp until the setting is displayed. g. The current time and day and current ... start. Run c. The time is 10°F (6°C) above room temperature.Your cooling system and fan should stop. NOTE: When cooling setting is changed, thermostat can delay up to five...
Owner's Manual - Page 19

... the normal setting for more efficient air cleaning. Dead Replace the batteries immediately. b. The thermostat controls your air conditioning system. Press on low with the air conditioner or furnace. NOTE: If new batteries are dead or incorrectly installed and reprogramming is blank, batteries are inserted within the month. Switch Fan Setting Auto On Result A single-speed fan...
Owner's Manual - Page 20

... program period only. d. Install new batteries. Press or until the desired temperature is temporary (Fig. 27). Override program settings NOTE: Make sure the System switch is reached.To cancel temporary change is displayed. NOTE: If "bAt Lo" continues to display after replacing the batteries, set System switch to lack of battery power in thermostat. Then reprogram. Make sure that...
Owner's Manual - Page 22

...display after replacing batteries, set System switch to reset thermostat. Press simultaneously. Change a program permanently Follow steps for period in question. Remove batteries and insert backward for 5-10 seconds to OFF and insert batteries backward for 5-10 seconds. Display shows flashing "bAt Lo." • • Temperature change occurs at wrong • times Then... Display...
Owner's Manual - Page 23

...-1638-1 Contact ac contractor. Plug the wiring hole in time delay on the Web at www.honeywell.com/yourhome or call , please have the following information available: - Number of the thermostat. Be aware that the System switch is blank or displays "bAt Lo," install fresh batteries. If temperature setting is higher than room temperature and SYSTEM...
Owner's Manual - Page 24

...USA Dock 4 - Honeywell's sole responsibility shall be free from the date of incidental or consequential damages, so this product, excluding battery, to be to repair or replace the product within the ... Radio Interference Regulations, CRC c.1374. Some states do not allow the exclusion or limitation of purchase by Honeywell that complies with proof of purchase (including date of purchase)...

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