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Operating Thermostat
Setting SYSTEM and FAN Switches
Use the SYSTEM and FAN switches to control
thermostat operation.
SYSTEM settings:
Cool: The thermostat controls the cooling.
Off: Both the heating and cooling are off.
Heat: The thermostat controls the heating.
Em. Ht. (heat pump models only): The
thermostat cycles emergency heat relay
(E) and cycles auxiliary heat (W2), as
needed, to maintain setpoint. Terminal L is
energized continuously (fault heat relay is
on continuously). Compressor is de-
energized.
Slide the SYSTEM switch in the lower right
corner of the thermostat to select the desired
system setting.
FAN settings:
Auto: Fan operates with equipment.
On: Fan operates continuously.
Slide the FAN switch in the lower left corner of
the thermostat to select the desired fan setting.
Heat and Cool Indicators:
Indicates a call for heat.
Indicates a call for cool.
NOTE: In the programming mode, the
and indicate system setting.