Author: dcahill
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How do I set the calibration?

Non-programmable Thermostat PSD111
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 calibration, perform the following: Turn temperature mode...
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What is swing, and how do I set it?

Non-programmable Thermostat PSD111
A thermostat works by turning your heating or cooling system on and off whenever the room temperature varies a certain number of degrees from the set-point.  This variation is the “swing”.  Your system should cycle on about 3 to 6 times per hour. The PSD111 has 2 swing settings called:...
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How do I switch between Fahrenheit and Celsius on my thermostat?

Non-programmable Thermostat PSD111
If you wish to change the temperature displayed to Read Celsius instead of Fahrenheit, (or Fahrenheit to Celsius): Take the front cover of the stat off the wall.  Look on the circuit board to find the jumper table which tells you what the jumpers are for. Look for the Row...
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What is the save button on my thermostat?

DMH110 Non-programmable Thermostat
The Save button allows you to save energy and money while you are not at home by allowing one button press to decrease the set point temperature in winter and increasing the set point temperature during summer.  Whenever you leave the house, hit the Save button to put it in...
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What is swing, and how do I set it?

DMH110 Non-programmable Thermostat
A thermostat works by turning your heating or cooling system on and off whenever the room temperature varies a certain number of degrees from the set-point.  This variation is the “swing”. Your system should cycle on about 3 to 6 times per hour. The DMH110 has 2 swing settings called:...
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How do I reset my thermostat?

DMH110 Non-programmable Thermostat
If your thermostat is behaving erratically or something strange is in the display, hitting the “Reset” buttons can often correct the problem. Reset: Take the front of the thermostat off the wall and look for a small round white reset buttons labeled “RESET” on the circuit board.   Hold this...
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How do I switch between Fahrenheit and Celsius on my thermostat?

DMH110 Non-programmable Thermostat
The DMH110 can be converted between Fahrenheit and Celsius scales To change temperature scale: Take the front cover of the stat off the wall. Look on the circuit board to find the jumper table which tells you what the jumpers are for. Look for the Row that has C in...
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How do I set the calibration on my thermostat?

DMH110 Non-programmable Thermostat
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 calibration, perform the following: Turn temperature mode...
READ MORE
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What is swing, and how do I set it?

Programmable Thermostat TX9100E
A thermostat works by turning your heating or cooling system on and off whenever the room temperature varies a certain number of degrees from the set-point.  This variation is called “swing.” We recommend setting #1 which provides maximum comfort.  This is also the default value that the thermostat already has...
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How do I adjust the temperature differential for 2nd stage heating?

Programmable Thermostat TX9100E
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 heat pumps.  The auxiliary heat is there for when your system can’t keep up with your...
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How do I program the schedule on my thermostat?

Programmable Thermostat TX9100E
There are four periods per each day, for Heat mode and Cool mode.  They are: MORN, DAY, EVE, NITE.  ALL 4 periods MUST be set for the thermostat to function properly.  These same programming steps for all four periods, must be performed independently for both Heat and Cool programs. TO...
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How do I lock and unlock my thermostat?

Programmable Thermostat TX9100E
To prevent tampering with your settings, the front panel keys and the rotary dial can be locked out, requiring a four digit code to unlock them. You may use either the default lock code of “0000”, or your own code number. The button presses below must be performed in a timely...
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