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Your new thermostat can be removed from its wiring
subbase for easy programming, resetting the
thermostat, or changing the batteries. The wiring
subbase will remain attached to the wall.
To remove thermostat from wiring subbase:
1. Press SYSTEM button until OFF is displayed in the
time field.
2. Gently lift the bottom of the thermostat up and out
as shown in Figure 1.
3. Pull thermostat up and away from wiring subbase.
To replace thermostat onto wiring subbase:
1. Align slots on top of thermostat with square pins
on subbase.
2. Latch the top of the thermostat into place. Pivot the
thermostat down and push in to lock the bottom of
the thermostat into place.
Figure 1
REMOVING THERMOSTAT FROM WIRING SUBBASE
SYSTEM
AUTO FAN
9
Replacing The Back-Up Batteries:
CAUTION: Installing batteries backwards can damage
thermostat.
NOTE: Replace batteries with four “AA” alkaline batteries only.
1. Press SYSTEM button until "OFF" appears in the time field on
the display.
2. Remove thermostat from wiring subbase. (See “REMOVING
THERMOSTAT FROM SUBBASE” for more information.)
3. Turn thermostat over. Locate battery compartment.
NOTE: Replace all four batteries at the same time. The thermostat
will “hold” all programmed information for about 30 seconds without
battery power. If 30 seconds elapse before batteries are replaced, the
program will be lost.
4. Replace all batteries with four new “AA” alkaline batteries. Be
sure the positive (+) ends of the batteries match the positive
terminals in the battery compartment.
5. Replace thermostat onto wiring subbase.
6. Press SYSTEM button until HEAT or COOL shows on the right
side of the display.
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AUTO FAN
SYSTEM
OPERATION
SYSTEM