How to Use a Honeywell Thermostat

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A thermostat on the wall such as a model by Honeywell is the key to a comfortable temperature in your home. Models ranging from manual round thermostats to programmable digital models are relatively easy to use and allow you to set up a daily and weekly schedule.

Manual Thermostats

The familiar round thermostat is a manual model. On the upper left, there may be a "System" switch, which allows you to set the thermostat on Heat, Cool or Off. It may also have a "Fan" switch that you can set on Auto or On. When the fan is set on Auto, it only operates when the heating or air conditioning is on. When the fan is set to On, it works continuously. To set the thermostat, simply turn the dial clockwise to raise the temperature setting, or counterclockwise to lower the temperature.

Non-Programmable Thermostats

Basic digital thermostats, such as the Honeywell 5000, allow you to set one temperature for heating or cooling. You must manually change the temperature if you prefer a warmer or cooler house.

Step 1

Press any button to back light the screen.

Step 2

Press the "Fan" button to set the fan on Auto or On.

Step 3

Press the "System" button to put the thermostat in Heat, Cool or Off mode. To change the setting, push the button again. The screen will display the setting you've selected.

Step 4

On the right side of the display, the up and down arrow buttons operate the temperature settings. Simply press the up button to set the thermostat at a higher temperature, or the down button to lower the temperature.

Programmable Thermostats

Programmable thermostats, such as the CT3200, T8011, RTH230B or T8112D allow you to set an automatic seven-day schedule of heating or cooling. By lowering the heat or raising the temperature at night or when you aren't home, you can save on your heating and cooling energy costs. While the buttons may be in different locations on the face of the thermostat, and "Fan" and "System" may be a switch rather than a button, programming the weekly schedule is a similar process.

Set the Date and Time

Honeywell thermostats are relatively intuitive. While not all models display the date and time, digital programmable models need this information before you can begin to program the on-off heating or air conditioning cycles.

Step 1

Locate the "Set Clock/Day" button and press it. The time will appear on the display. Press and hold the "Ahead" or "Back" button until the correct time appears. Note if it is AM or PM and continue holding the button down if necessary until the time is correct.

Step 2

Press on the "Set Clock/Day" button. The day of the week will appear on the display. Press "Ahead" or "Back" and hold the button down until you reach the correct day.

Step 3

Press the "Run Program" button once to set the time and date. To change the time only for Daylight Savings or Standard time, program the time and then press on "Run Program."

Program the Thermostat

For five days a week, the thermostat gives you four settings: Wake, Leave, Return and Sleep. On the weekend, most models only give you Wake and Sleep settings. When setting the Wake and Return times, allow extra time for the house to warm or cool before you get out of bed or return home after a long day.

Step 1

Set the thermostat to Heat or Cool before programming the daily or weekend schedule.

Step 2

Press the "Set Schedule" button once. The display will show Wake, Mon-Fri and Set.

Step 3

Use the Time buttons to set the Wake time. Then use the Temp buttons to set the temperature. Press "Set Schedule" to move the programming to Leave. Repeat the process for Leave, Return and Sleep.

Step 4

Press "Set Schedule" until Sat-Sun appears. Set the Wake schedule by using the Time and Temp buttons. Press "Set Schedule" again to set the Sleep time and temperature settings.

Step 5

After setting the times and temperatures, press the "Run Program" button. The thermostat will run the program until you change the settings.

Make a Temporary Change

If you are at home on a day that you'd normally be out, you can temporarily change the temperature without reprogramming the entire system. Simply press the Temp buttons to adjust the current temperature. At the next scheduled change, such as Sleep, the thermostat will automatically return to its programmed times and temperatures.

If you will be up late or out of town for several days, you can keep the temperature at the temporary setting by pressing the Hold Temp button once and adjusting the temperature up or down. To return the thermostat to its programmed settings, press "Run Program" once.

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