DCN: 140-02338 Rev 01 30419 Page 9
• For Changeover with Cooling systems (Orange wire), select “WITH COOL”.
This is the default setting.
• For Changeover with Heating systems (Brown wire), use the Up/Dn arrows to
change to “WITH HEAT”.
• Press Select to set
• Press Done to exit
Not sure which Changeover type?
Check the existing thermostat connections to help determine this.
• If the original system had an orange wire connected to the “O” terminal, then this is a
“changeover with cool” system.
• If there was a brown wire connected to the “B” terminal, then this is a “change over
with heat” system.
• Set the Change Over setting accordingly. (Caution: These are typical wiring
colors/connections and may differ)
• If heating comes on when cooling is expected or vice versa, change the
“Change Over Type” to the opposite setting.
Advanced System Settings Menu
The Advanced System Settings Menu provides for addition system setup options.
These settings can affect system operation and should only be changed by qualified HVAC
installers.
To access the Advanced System Settings menu, first press and hold the Fan button to get
to the MENU screen. Continue to hold down the Fan button and press and hold the Down
Arrow button for 5 seconds. The first menu item in the Advance System Settings menu
“Display Lock”, will be displayed. Use the Up/Down arrow buttons to scroll through the
menu options to the desired setting. Press “Select” (Mode) button to change a setting.
Once it begins to flash, use the Up/Down buttons to select the desired setting. Press the
“Select” button to accept the new setting (flashing will stop).
Advanced Settings
Display Lock Range: Y or N Default: N
Y = Display LOCKED
N = Display UNLOCKED
Allows the thermostat buttons to be locked. When the buttons are locked, none of the
thermostat buttons will function as normal.
To unlock the thermostat, press and hold the FAN button for 5 seconds to access the
Setup screen (it’s the only button that works in the lock mode). Access the Advanced
Settings Menu (as above) to turn the Display Lock off.
Test Mode Range Y or N Default: N
Test mode shortens the system built-in delays (like MOT and MRT)
Y= Test mode on. Reduces all delays to 10 sec for quicker system testing
N= Test mode off. Normal system delays
Test mode will time out after 30 min and return to normal operation.
Aux Heat Enable (Heat Pump Systems only) Range: Y or N Default: Y
Enables the Auxiliary Heat operation.
Typically, the Aux Heat will be heat-strips in a Heat Pump system
Aux heat control is wired to the W1 terminal.