Operation - Carrier 52M Performance Series Installation And Operating Instructions Manual

OPERATION

IMPORTANT: When unit is first started, high humidity conditions can cause condensation to form on
discharge grille. Keep doors and windows closed. Room humidity will decrease and moisture will
evaporate.
TEMP CONTROL
ABOUT THE CONTROLS ON YOUR UNIT
NOTE: In case of a power failure, the unit will
remember the last programmed settings and will
restart to those settings.
1. TEMP CONTROL
Temp Control is used to maintain room temperature.
Compressor will cycle on and off to keep room at the
requested level of comfort.
COOLER - - Lowers temperature.
(Minimum temperature setting is 61_F/16_C)
WARMER - - Raises temperature.
(Maximum temperature setting is 86_F/30_C)
FAN, MODE& OPERATION
Fig. 27 – PTAC CONTROLS
2. FAN SPEED, MODE & ON/OFF
FAN SPEED - - Set fan operation for HI, MED, or
LO speed.
MODE- -COOL - - For cooling
MODE- -HEAT - - For heating
NOTE: If unit is a heat pump, raising the heat setting
5_F will cause unit to use its electric heating
elements for one cycle in order to reach the new
requested temperature quickly.
MODE- -FAN - - For fan- -only operation
ON/OFF - - Turns the unit on or off.
NOTE: The LED above the ON/OFF button will be
green when unit is ON and red when the unit is OFF.
All other LEDs will be off when unit is set to OFF
mode.
NOTE: Power remains connected to unit.
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