SYSTEM settings control the thermostat operation as follows:
Cool: Normal setting for months when your home needs cooling (air condition- ing). Digital display shows a
snowflake 
when cooling is on.
Off: Both heating and cooling are off.
Heat: Normal setting for months when your home needs heating. Digital display shows a flame 
when heating is on.
Em. Ht.: Switch to this setting when your home needs heat, but your equip- ment needs servicing or is not working properly. In this mode, the thermostat controls only the backup heat. The heat pump is off.
M17329
NOTE: In the programming mode, the 
and 
indicate the system setting.
Fan Setting
To select the desired fan setting, slide the FAN switch in the lower left corner of the thermostat.
| FAN |
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| SYSTEM | |||
Auto On | Cool Off Heat Em. Ht. | ||||||
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FAN SWITCH | M17337 |
| Pub. No. |
18 |
