White-rodgers 1F97-71 Manuel d'utilisateur télécharger pdf (Page 13)

13

AUTOMATIC CHANGEOVER to determine

proper positions of Group B option switches

#1 and #2.

EMR Switch Positions

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 system

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 automatic

changeover, you must move Group B option

switch #1 to the ON position and switch #2 to

the OFF position. Turn off 24v AC 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 24v AC power. If the switches are not

correctly 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. Replace the

battery, reprogram the thermostat, if neces-

sary, put the thermostat back on the wall, and

restore 24v AC power. To set the thermostat

for automatic changeover after programming,

press

SYSTEM

SWITCH

to set the thermostat to AUTO

ON

123

Group B

Option

Switches

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 39 40

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