switch to the OFF position (see figure be- low). Leave the battery out of the thermostat for at least two minutes, to allow the ther- mostat to reset itself. See AUTOMATIC CHANGEOVER to determine proper posi- tions of Group B option switches #1 and #2.
EMR (ON)
ON
Group B
Option
Switches
1 2 3
Switch #1 (see AUTOMATIC CHANGEOVER) Switch #2 (see AUTOMATIC CHANGEOVER)
Switch #3 OFF
•AUTOMATIC CHANGEOVER — If you have a heating/cooling system, you can set the thermostat to automatically switch the sys- tem from heating to cooling as needed. (If you have a heating only system, Group B
option switch #1 should be OFF and option switch #2 should be ON.) To enable auto- matic changeover, you must move Group B option switch #1 to the ON position and switch #2 to the OFF position. Turn off 24 VAC power to the thermostat. Then remove the thermostat body from the wall. Check the position of Group B option switches #1 and #2 (the first two switches on the left). If they are in the correct positions, simply put the thermostat back on the wall and restore 24 VAC power. If the switches are not cor- rectly positioned, remove the battery, then use a pencil or small screwdriver to move the switches to the correct positions (see figure on next page). Leave the battery out of the thermostat for at least two minutes, to allow the thermostat to reset itself. Re- place the battery, reprogram the thermo-
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