Carrier 38CKC042 Air User Manual

 

• Your system may also be equipped with a zoning system which 
allows individual control over the temperatures of separate areas 
of your home.

• Your air conditioner removes humidity from your home during 
the cooling season. After a few minutes of operation, you should 
be able to see water trickle from the condensate drain of the 
cooling coil. Check this occasionally to be sure the drain system 
is not clogged. Of course, don’t expect to see much drainage if 
you live in a very dry environment.

• Do not operate your unit when outdoor temperatures are below 
55°F.

 

The operation of your air conditioning system is controlled by 
the indoor thermostat. You simply adjust the thermostat and it 
maintains the indoor temperature at the level you select. Most 

thermostats have three controls: a temperature control selector, 
a FAN control, and a SYSTEM or MODE control.

The temperature control selector can be a dial, lever, or set of 
buttons that allows you to establish the degree of temperature 
you wish to maintain for your personal comfort. Some thermo-
stats possess two temperature control selectors: one for setting 
the temperature desired for cooling operation, and one for set-
ting the temperature desired for heating operation. 

The FAN control offers two options for controlling the indoor 
blower: AUTO and ON. When set to AUTO, the blower runs 
only while the thermostat operates the cooling or heating equip-
ment. When set to ON, the blower runs continuously—regard-
less of whether the cooling or heating equipment is operating.

Typically, the SYSTEM or MODE control on your thermostat 
offers the following selections: COOL, OFF, and HEAT. Your 
thermostat may also have a fourth selection, AUTO. Neither the 
cooling nor heating equipment will operate when the SYSTEM 

 

 

RESET FILTER BUTTON

RESTARTS THE TIMER

THAT CALCULATES

THE NEXT AIR FILTER

CHANGE OR CLEANING

FAN BUTTON CHOOSES
BETWEEN ON OR AUTO
FAN OPERATION

LCD READOUT DISPLAYS

CURRENT ROOM TEMPERATURE,

DESIRED ROOM TEMPERATURE,

UNIT MODE SETTING,

AND FAN MODE SETTING

MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COOL, AND AUTO OPERATION

UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
DESIRED TEMPERATURE
SETTINGS

MODE

FAN

RESET/FILTER

Thermostat

 

 

HOLD

RESET FILTER

RESET FILTER BUTTON

RESTARTS THE TIMER

THAT CALCULATES

THE NEXT AIR FILTER

CHANGE OR CLEANING

HOLD BUTTON MAINTAINS
THE CURRENT TEMPERATURE
AND OVERRIDES PROGRAMMED
TEMPERATURE CHANGES
UNTIL RESET

SET TIME

BUTTON

FAN BUTTON CHOOSES
BETWEEN ON OR AUTO
FAN OPERATION

MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COOL, AND AUTO
OPERATION

PROGRAM BUTTONS

FOR PROGRAMMING

HEATING/COOLING

CYCLES

UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
DESIRED TEMPERATURE
SETTINGS

LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE
OR OUTDOOR TEMPERATURE,
UNIT MODE SETTING,
FAN MODE SETTING,
AND TIME OF DAY

Programmable
Thermostat

HOLD

RESET FILTER

SET TIME/TEMP

FAN

END 

CHANGE DAY

MODE

PROGRAM

COPY PREVIOUS DAY