Author: dcahill
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How do I program the schedule on my thermostat?

Programmable Thermostat TX700U TX700Uc
There are four periods per each grouping of days, for Heat mode and Cool mode.  They are: MORN, DAY, EVE, NITE.  ALL 4 periods MUST be set for the thermostat to function properly.  Select either HEAT or COOL with the Temperature mode switch.  These same programming steps for all four...
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Can I disable a programmed schedule on my thermostat?

Programmable Thermostat TX1500U TX500U TX700U TX9100U
This feature allows the thermostat to be placed in either programmable or manual operating mode.  In programmable mode, the thermostat controls the room temperature automatically according to your pre-set program that follows your daily routine. In manual mode, the thermostat operates manually just like a mechanical or non-programmable model.  This method...
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Can I switch between 2 and 4 period programming?

Programmable Thermostat TX1500U TX500U TX700U TX9100U
The thermostat comes from the factory set at 4 periods per day.  This allows you to program 4 different start times with 4 different temperatures throughout the day.  If you are home all day and only need 2 changes per day, you can simplify the programming steps by changing the...
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How do I reset my thermostat?

Programmable Thermostat TX1500U TX500U TX700U TX9100U
If your thermostat is behaving erratically or something strange is in the display, hitting “Reset” buttons can often correct the problem. Hardware Reset: Try this first since it does not erase anything.  Take the front of the thermostat off the wall and look for a small black round reset buttons...
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How do I switch between Fahrenheit and Celsius on my thermostat?

Programmable Thermostat TX1500U TX500U TX700U TX9100U
To change the temperature displayed to read Celsius instead of Fahrenheit, (or Fahrenheit to Celsius): Take the front cover off the stat off the wall. Look on the circuit board to find the dip switch table which tells you what the dip switches are for. Look for the Row which...
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How do I switch between 12 hr and 24 hr time on my thermostat?

Programmable Thermostat TX1500U TX500U TX700U TX9100U
The following steps will allow you to switch between Standard and Military time: Remove the front cover of the thermostat from the wall.  On the circuit board, locate the row of dip switches.  It is a horizontal rectangular black box with white switches.   Move Switch #5 to the opposite...
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How do I adjust the temperature differential for 2nd stage heating?

Programmable Thermostat TX1500U TX1500Uc TX500U TX500Uc TX700U TX700Uc TX9100U TX9100Uc
The OFFSET setting is shown as number of degrees (default = 4F). It is similar in nature to the Swing setting, however,  it only effects the operation of the second (auxiliary) heating stage of your system.   ​ The auxiliary heat is there for when your system can’t keep up...
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How do I program the schedule on my thermostat?

Programmable Thermostat TX500U TX500Uc
There are four periods per each grouping of days, for Heat mode and Cool mode.  They are: MORN, DAY, EVE, NITE.  ALL 4 periods MUST be set for the thermostat to function properly.  Select either HEAT or COOL with the Temperature mode switch.  These same programming steps for all four...
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How do I adjust calibration on my thermostat?

Programmable Thermostat TX1500U TX1500Uc TX500U TX500Uc TX700U TX700Uc TX9100U TX9100Uc
If you wish to adjust the displayed temperature up or down, there is calibration feature in your thermostat.  Although it is factory calibrated and should not need to be changed, you can adjust it to match a different thermometer in home. To adjust your calibration, perform the following steps: Ensure...
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How do I set day & time on my thermostat?

Programmable Thermostat TX1500U TX1500Uc TX500U TX500Uc TX700U TX700Uc TX9100U TX9100Uc
If you wish to change the day and or time, perform the following steps: ​ ​ open the front door of the thermostat. Slide the SET slide switch in the upper right corner to “Day/Time”. You will see the day blinking at the top.  Press the “Up” button until it...
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What is swing, and how do I set it?

Programmable Thermostat TX1500Uc TX500Uc TX700Uc TX9100Uc
Note: Maximum time between button presses is 10 seconds A thermostat  works by turning your heating or cooling system on and off whenever the room temperature varies from the desired set-point  temperature.   The amount of this variation is called the swing. Generally your system should cycle on about 3...
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How do I reset my thermostat?

Programmable Thermostat TX1500Uc TX500Uc TX700Uc TX9100Uc
If your thermostat is behaving erratically or something strange is in the display, hitting “Reset” buttons can often correct the problem. Hardware Reset: Try this first since it does not erase anything.  Take the front of the thermostat off the wall and look for a small round black reset buttons...
READ MORE