Auto Mode; Sleep Mode - Carrier 40GXC Service Manual

AUTO MODE

When the Auto setting is selected, at startup the unit will run in
cooling, fan only, or heating based on the room temperature at
shown below.
°F
77
73.4
68
64.4
Fig. 25 – AUTO Mode
After startup and if the unit is running in cooling, the compressor
will be de- -energized when the room temperature is 73.4_F (23_C).
If the unit was running in heating, the compressor will be
de- -energized when the room temperature is 73.4_F (23_C).
There is a 6 minute time delay before modes are switched.

SLEEP MODE

Additional energy savings can be realized by selecting the Sleep
mode. When the sleep setting is selected, the temperature set point
is adjusted automatically as shown below:
At Startup
Cooling
T
S
Fan
Heating
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15
T +3.6°F
S
T +1.8°F
S
Cooling
Heating
T -1.8°F
S
T -3.6°F
S
1 HR 2 HR
Fig. 26 – SLEEP Mode
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