Replacing 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.
29
SYSTEM
—
—
SYSTEM
OPERATION
AUTO FAN
BATTERY
COMPARTMENT
+ —
+
+ —
+