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• 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.
OPERATING YOUR AIR CONDITIONER
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
Fig. 2—Carrier Non-Programmable Thermostat
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
HOLDRESET 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
HOLDRESET FILTER
SET TIME/TEMP
FAN
END
CHANGE DAY
MODE
PROGRAM
COPY PREVIOUS DAY
Fig. 3—Carrier Programmable Thermostat