Carrier 38AN,BK specifications will stop30secondsafterthecompressorstopsAfter

will stop30secondsafterthecompressorstopsAfter.

3 minutes,theindoorfanrunsatultra-lowspeedfor 30secondsThenormaldehumidificationoperationisre.- peatedforthenewlysensedroomtemperature.

3.Whentheroomtemperatureisequaltoorgreaterthan 4°Fbelowtheselectedtemperature,thesystemoperates asfollows:Thecompressorandoutdoorfanoperatefor 3minutesTheindoorfanwilloperateultra.-lowspeed andwillstop30secondsafterthecompressorstopsAf.- ter4or5minutes,theindoorfanstartsinultra-lowspeed

for30secondsThe. normal dehumidification operation is

repeated for the newly sensed room temperature. If the room temperature is still 4° F below the selected tem- perature, the compressor, outdoor fan, and indoor fan re- main off. After 7_A minutes, the indoor fan operates at ultra-low speed for 30 seconds. The normal dehumidifi- cation operation is repeated for the newly sensed room temperature.

•Heat Pump Heating Mode (Heat Pump Systems Only) -- When the Heat Pump mode is selected, the indoor fan will operate at the selected speed if the speed is high, medium, or low, unless overridden by the coil temperature (to pre- vent cold drafts). If the indoor fan is in Auto. mode, the fan will change operating speeds depending on the differ- ence between the room temperature, the set point, and the coil temperature. The reversing valve will be deenergized.

The compressor cannot run for 3 minutes from the time the system starts up or for 3 minutes from the time it last operated. When the temperature of the room is 8 ° F below the selected temperature, the unit will operate in Heat Pump mode until the temperature is 6° F above the selected tem- perature, or the compressor runs for 40 minutes (which- ever comes first). If the temperature of the room is less than 7 ° F below or equal to the selected temperature, the unit operates in Heat Pump mode until the selected set point temperature plus 2 ° F is reached.

•Electric Heat in Heat Pump Heating Mode (40QNH012 Heat Pump Unit Only) -- Supplemental electric heat is enabled when the outside-air thermistor located in the out- door unit is below 40 F and the room temperature ther- mistor is equal to or less than 5.4 ° F below set point. Elec- tric heat will remain on until 1.8 ° F above set point, then will turn off. Fan operation will be the same as described previously in the heat pump heating mode.

NOTE: Electric heat control cannot be overridden.

•Demand Defrost Mode (Heat Pump Systems Only) -- This unit uses a demand defrost system to remove frost from the outdoor coil during heating operation. The indoor and outdoor fans are shut off during Defrost mode. See Fig. 16. For 40QNH units, the electric heat is off during Defrost mode.

•Sleep Mode -- The Sleep mode timer turns the unit off when the timer reaches zero minutes. The durations that

can be selected are 1, 2, 3, or 7 hours. After the initial 30 minutes, the user set point shifts approximtely 1° F warmer. This sequence repeats itself every 40 minutes up to a total

of 150 minutes. When Sleep mode is enabled, the display on the remote controller is dimmed.

•ON/OFF Timer Mode -- The ON/OFF timer will turn the

unit on or off at a user selectable on and off time (this is one time event only). The unit will start in the same mode and at the same selected temperature as when the system shut off. If the room temperature is not within approxi-

mately 5 ° F of the set point 40 minutes before start-up, the unit runs before the user selected on time is reached to

achieve the set point temperature at start-up.

•Automatic Operation Mode for Cooling Only Systems -- The unit samples the air in the room. Based on the room temperature, the unit selects one of the following modes:

1.Cooling Mode -- If the room temperature is more than

82.4F with a preset temperature of 78.8 F.

2.Dry Mode -- If the room temperature is more than

75.2F and less than 82.4 F with a preset temperature of 77 F.

3.Fan Only Mode -- lfthe room temperature is less than

75.2E

The preset temperature can be changed by a-4° F using the remote control.

•Automatic Operation Mode for Heat Pump Systems -- The operation mode will be determined aider 20 seconds of room monitoring (to determine the room temperature and the outdoor-air temperature).

•Test Mode -- The Test mode can be selected by setting

the slide switch on the fan coil unit to TEST position. The slide switch is located on the front of the unit as shown in

Fig. 17. The fan coil unit will start immediately (there is no compressor time delay when using Test mode) in Cool- ing mode with an infinitely low set point. The indoor fan speed will be at the high setting, and the swing louvers will be on (moving up and down).

NOTE: The unit cannot be controlled by the remote con- troller until the slide switch is returned to the REMOTE

position.

•Emergency Mode --This mode is only to be used if the remote controller is lost, damaged, or the batteries are dis- charged. To initiate emergency mode, manually move the slide switch on the fan coil unit to the EMER position (Fig. 17). The unit is automatically operated in cooling or heating (40QNE/H units only) mode according to room temperature. Emergency operation settings are as follows:

1.Operation mode: AUTO.

2.Fan speed: AUTO.

3.Cooling set point: 77 F

4.Timer mode: Continuous

NOTE: The unit cannot be controlled by the remote con- troller until the slide switch is returned to the REMOTE

position.

16