Programmable Dehumidification
Optimal Dehumidification Mode
(OPTM DHUM)
(User Menu step 6)When turned on this feature automatically reduces indoor humidity if humidity is 2% above setting. Humidity is set by pressing the HUMIDITY button when in the appropriate mode, in this case Cooling, and pressing the 
or 
buttons to set desired humidity level followed by pressing
RUN PROGRAM. This dehumidifi- cation feature may use more energy by making dehumidification a priority initiating a call for cooling if humidity is 2% above desired setting. This feature may also
Fahrenheit or Celsius
Temperature Display.
(User menu, Step 7) This thermostat is factory set to display temperature in Fahrenheit. If you prefer, you may configure the thermostat to display Celsius. See the CONFIGURATION Section, page 5.
Single Period Fan Control.
(User menu, Step 8) This feature allows you to have the fan run for a predetermined period of time by pressing the FAN key twice within 1.5 seconds. If a time is set in the User
menu (page 4, step 8) the display will show FAN, # hrs and PRG FAN ON for six seconds. After six seconds the display will continue to indicate PRG FAN ON for the time period selected. After this time period, the fan will return to normal operation. To return the
fan to normal operation before the end of the time period, press the FAN button.
Beeper on.
(User menu, Step 9) The thermostat has a beeper that will emit a tone when any key is pressed. In the user menu, the BEEP feature can be turned OFF using 
or 
to provide silent key operation.
Heat Fast.
(User menu, Step 10) This feature, when set to ON, will bring the second stage of heating on any time you manually raise the temperature three or more degrees above room temperature. If HEAT FAST is set to OFF, the thermostat will delay the second stage from 0 to 30 minutes based on how well the first stage is keeping up with your setting.
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