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Carrier 53DFST2-NP Owner's Manual page 5

Programmable digital

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• DUAL SET POINT BEHAVIOR -- The adjustable
set point range is: 35 to 99 degrees in Fahrenheit
and 7 to 35 degrees in Celsius. When in the modes
Heat or Cool, this adjustable range is unhampered.
When adjusting any Auto mode, including program-
ming Occupied and Unoccupied periods, the ther-
mostat will not allow the Heat set point to get closer
to the Cool set point than the value programmed as
the minimum difference in Step 7, page 4.
When entering the Auto mode from Cool, the Heat
and Cool set point temperatures will remain spread
apart by the amount that they were adjusted, prior
to entering Auto.
For example: If the Cool set point was set to 80
while in the Cool mode and the Heat set point was
adjusted to 70 while in the Heat mode, upon enter-
ing the Auto mode the Cool and Heat set points
would be 80 and 70. Both set point temperatures
would then move up and down together, (in this
example spread by 10 degrees), by pressing the up
or down buttons.
To move the Heat and Cool set points closer
together, enter the Cool or Heat mode by pressing
the Mode button, then adjust the set point(s) closer
together. Heat is limited to how close it can come to
Cool by Step 7, page 4.
• FACTORY DEFAULTS -- Before restoring factory
defaults, set thermostat to OFF mode. If, for any
reason it is desirable to return all stored settings
back to the factory default settings, press the Mode
button. While holding the Mode button in, press the
Down button for 2 seconds. All icons will appear.
Press and hold the Override button until Fd
appears. All icons will appear. Press and hold in the
Fan button until Fd appears. This resets all factory
settings. To calibrate
room temperature,
press
the Mode button once more. At this point use the Up
and Down buttons to calibrate room temperature, if
needed. Press the Mode button to return to normal
operation.
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Page 5

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