Contents

Installation
- Verify You Have Correct Thermostat
- Step 1. Prepare for Installation
- Step 2. Remove Old Thermostat
- Step 3. Install Mounting Plate
- Step 4. Set Thermostat for Your Type of Heating System
- Heating System Table
- Step 5. Wire Thermostat Terminals
- Step 6. Mount Thermostat
- Step 7. Install the batteries
- Special Wiring Instructions
Programming
- Faceplate Illustration and Description
- Step 1. Set Current Time and Day
- Step 2. Learn About Programming Features
- Programming Tips
- Step 3. Program Heating Schedule
- Step 4. Program Cooling Schedule
- Step 5. Check System
Operation
- Change Clock for Daylight/Standard Time
- Set Fan and System Switches
- Replace Batteries
- Override program settings
Frequently asked questions
Customer Assistance
Limited warranty

Honeywell CT3200 Owner's Guide

Honeywell CT3200 Thermostat manual cover

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Honeywell CT3200 Thermostat Specification

The Honeywell CT3200 Thermostat is a programmable device designed to optimize home heating and cooling efficiency. It features a simple, user-friendly interface with a clear digital display that enhances usability. The thermostat is compatible with most 24V heating and cooling systems, including single-stage heating and cooling, gas and oil furnaces, and electric furnaces.

The CT3200 allows for 5-2 day programming, enabling users to set different schedules for weekdays and weekends. This functionality supports four daily periods, providing flexibility to adjust the temperature according to the user's lifestyle and preferences. The thermostat is equipped with precise temperature control, maintaining your desired temperature with an accuracy of ±1°F, ensuring consistent comfort.

Installation is straightforward, with easy-to-follow instructions, making it accessible for both professional installers and DIY enthusiasts. The thermostat includes a battery backup system to retain programming and settings during power outages, ensuring continuous operation and reliability.

Energy efficiency is at the core of the CT3200’s design, helping users reduce energy consumption and costs through its programmable settings. The thermostat also features a filter change reminder to maintain optimal system performance by alerting users when it's time to change the HVAC filter.

The Honeywell CT3200 is built with durable materials, ensuring longevity and dependable operation. Its compatibility with a wide range of systems, coupled with its ease of use and programming capabilities, makes it a versatile choice for enhancing comfort and energy efficiency in residential settings. Overall, the CT3200 offers a balance of functionality, reliability, and energy savings.

Honeywell CT3200 Thermostat F.A.Q.

How do I reset my Honeywell CT3200 thermostat to factory settings?

To reset your Honeywell CT3200 thermostat, switch the thermostat to the 'Off' position, then remove the batteries. Wait for about 10 seconds, reinsert the batteries, and turn the thermostat back on. This will reset the thermostat to its factory settings.

Why is my Honeywell CT3200 thermostat not turning on the heat?

Ensure that the thermostat is set to the 'Heat' mode and that the temperature setting is higher than the current room temperature. Check the circuit breaker and the furnace switch to ensure they are on. If the issue persists, there may be a wiring or mechanical issue that requires professional service.

How can I program the Honeywell CT3200 thermostat for weekdays and weekends?

To program the Honeywell CT3200, press the 'Set' button, then use the 'Weekday/Weekend' button to select the period you want to program. Use the arrow keys to adjust the time and temperature settings for each period. Press 'Set' again to save your settings.

What should I do if my Honeywell CT3200 thermostat display is blank?

Check if the thermostat is receiving power by ensuring the batteries are properly installed and charged. If the display is still blank, check the circuit breaker and wiring connections. Replace the batteries if necessary, and consult the user manual if the problem persists.

How do I change the batteries on my Honeywell CT3200 thermostat?

To change the batteries, gently pull the thermostat away from the wall plate. Locate the battery compartment on the back of the unit. Remove the old batteries and replace them with new AA alkaline batteries, ensuring correct polarity. Reattach the thermostat to the wall plate.

Can I use my Honeywell CT3200 thermostat without a C-wire?

Yes, the Honeywell CT3200 can operate without a C-wire as it is battery-powered. However, using a C-wire can provide continuous power and may be necessary for certain advanced features. Consult the installation manual for more details.

How do I troubleshoot incorrect temperature readings on my Honeywell CT3200?

Ensure that the thermostat is not exposed to direct sunlight, drafts, or other heat sources, which can affect temperature readings. Verify the calibration settings in the thermostat menu and adjust if necessary. If the problem persists, contact Honeywell support for assistance.

What is the procedure to lock the keypad on the Honeywell CT3200 thermostat?

To lock the keypad, press and hold the 'Up' and 'Down' arrow keys simultaneously for about 5 seconds. The display will show a lock icon indicating that the keypad is locked. Repeat the process to unlock the keypad.

Why is my Honeywell CT3200 thermostat showing error code EE?

Error code EE on the Honeywell CT3200 indicates an internal error or malfunction. Try resetting the thermostat by removing the batteries for a few seconds and then reinserting them. If the error persists, it may require professional repair or replacement.

How often should I replace the batteries in my Honeywell CT3200 thermostat?

It is recommended to replace the batteries in the Honeywell CT3200 thermostat once a year, or immediately when the low battery indicator appears on the display, to ensure uninterrupted operation.