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5.4.5 Remote Thermostat Mode (Optional Accessory)
A remote thermostat can be installed for the furnace with the Remote Thermostat Installation Kit
(Part # 204000045 for US installations, Part # 204000048 for Canadian installations). Once
installed, the furnace must be placed in Remote Thermostat mode by following the steps below:
1. Ensure the furnace is plugged in but is turned OFF.
2. Ensure the Set back feature is turned OFF.
3. Press and hold the Economy + Up + Program buttons for 2.5 seconds and then release (00
appears in the display).
4. Press the UP button (01 appears in the display).
5. Press the ON/OFF button; the display will go blank. The furnace is now in Remote Thermostat
mode.
IMPORTANT
Do not unplug the furnace within two hours of entering Remote Thermostat mode. This will cause
the furnace to revert back to the Default Factory Setting.
Note: To return the furnace back to Control Panel mode, repeat steps 1-3. At step 4, press the UP
button until 02 appears in the display. Next, press the ON/OFF button; the display will go blank. The
furnace is now in Control Panel mode.
ECONOMY
Figure 42
IMPORTANT
DO NOT place furnace into 01 (Remote Thermostat Mode) without wall thermostat connection
components. Failure to do so may cause improper operation of the unit.
The following buttons/indicators on the control panel will remain functional in either mode:
ON/OFF Button
FILTER Indicator
ON Indicator
DISPLAY (The DISPLAY will be blank except in the event of an error code. All error codes will
show on the DISPLAY in either mode. Error codes will not show on the remote thermostat even
when in remote thermostat mode.)
IMPORTANT
The remote thermostat will NOT control the furnace's ability to power on or power down. This
must still be done by using the ON/OFF button of the furnace.
EX38DT Installation and Operation Manual
00 -
Default Factory Setting
01 -
Remote Thermostat Mode
02 -
Control Panel Mode
UP
PROGRAM
33
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