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Features and Operation
Controls-Dip Switches
Dip Switches
The dip switches are located behind the front case
panel, and are accessible through an opening on the
front of the unit. The left row of dip switches controls
Temperature Limiting. The right row of dip switches
controls the heat pump lockout, Freeze Sentinel,
constant fan, Energy Management System, and indoor
fan speed.
Note:
• The dip switches are set in the down posi-
tion from the factory.
• The owner is responsible for setting the
appropriate dip switches and connecting
terminals.
ALL I
2
All I2R (Heat Pump Lockout)
When this switch is up, heat pump operation
is locked out. Only electric resistance heat is
available when switch is up.
Note: Not all models are equipped with heat
pumps. Refer to the Nomenclature chapter to
determine if your model is equipped with a
heat pump.
FREEZ S (Freeze Sentinel)
Refer to the Freeze Sentinel section of
this chapter for more information.
CONST FAN
When this switch is up, the fan runs
continuously at high speed even if unit
is off.
NOT USED
DUCT
This switch, in conjunction with the
thermostat connection, controls indoor
fan speed.
Refer to the Fan Speed section of this
chapter for more information
OCCUPIED
Refer to the Energy Management
System section of this chapter for more
information.
(Continued next page)
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