Computer Expressions 40CG User Manual

OWNER’S MANUAL  
38CG,CS018-030  
40CG,CS018-030  
Wall Console/Underceiling Duct Free Systems  
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CONTENTS  
Page  
Page  
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
INDOOR UNIT FRONT PANEL . . . . . . . . . . . . . . . . . . . 7  
INDOOR UNIT COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
OUTDOOR UNIT COIL . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
CONDENSATE DRAINS . . . . . . . . . . . . . . . . . . . . . . . . . 8  
SYSTEM OPERATION CHECK LIST . . . . . . . . . . . . . . 8  
DIP SWITCH SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . 8  
ENERGY SAVING RECOMMENDATIONS. . . . . . . . . 8  
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2,3  
OPERATING MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
REMOTE CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7  
REMOTE CONTROL OPERATION . . . . . . . . . . . . . . . . 3  
UNIT OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . 9  
CLEANING AND MAINTENANCE . . . . . . . . . . . . . . .7,8  
AIR FILTERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
PC 111 Catalog No. 533-80052 Printed in U.S.A. Form OM38/40-2 Pg 1 2-02 Replaces: OM38/40-1  
Book 1  
4
Tab 3e 2f  
The remote control can perform the following functions:  
NOTE: When transmitting a command from the controller to  
the unit, be sure to point the controller toward the right side of  
the unit. See Fig. 4. The unit will confirm receipt of a com-  
mand by sounding 2 audible beeps.  
• Turn the system ON and OFF  
• Select operating mode  
• Adjust room air temperature and fan speed  
• Set time periods for automatic system operation  
BATTERY INSTALLATION — Two AAA 1.5V alkaline  
batteries (included) are required for operation of the remote  
control. See Fig. 2 for battery location.  
IMPORTANT: If no changes are made within 10 sec-  
onds, the remote control will return to its previous  
setting.  
FAN SPEED — To select the Fan mode and change the Fan  
Speed, follow the steps below:  
1. Press MODE button to select the Fan mode.  
To install batteries:  
1. Remove battery compartment cover by sliding off of  
remote.  
2. Press UP/DOWN button to select desired fan speed or  
to Auto.  
2. Insert batteries being sure to follow polarity markings in-  
side battery compartment.  
3. Press ON/OFF button to send changes to unit from re-  
mote control.  
NOTE: If unit is operating in DEHUMIDIFICATION mode  
the fan will only operate in Low speed and cannot be changed.  
3. Replace battery compartment cover.  
NOTE: Replace batteries whenever “Low battery” indicator  
appears on remote control display panel.  
DISPLAY SCREEN — There are five operating mode indica-  
tors that appear on the remote control display screen. See Fig. 3.  
TEMPERATURE SETTINGS — The temperature settings  
can be easily changed by pointing the controller toward the unit  
and pressing the UP/DOWN button until desired temperature  
OPERATION  
appears on screen. The  
OFF button is pressed.  
symbol appears each time the ON/  
Remote Control Operation The remote control  
has 3 buttons (see Fig. 4) used for operating and controlling the  
system:  
• MODE button — changes operating mode  
• UP/DOWN button — selects desired operating mode  
• ON/OFF button — turns the system on or off and trans-  
mits programing selections to unit.  
Another way of changing the temperature is as follows:  
1. Select the temperature display by pressing the MODE  
button. The degree symbol will flash next to the digits on  
the screen.  
2. Press UP/DOWN button to select the desired tempera-  
ture. The available temperature range is from 54 F to  
90 F.  
3. Press ON/OFF button to send changes to unit from re-  
mote control.  
BACK OF  
REMOTE CONTROL  
AIRFLOW DIRECTION — Perform the following steps to  
change the direction of airflow from the unit:  
2 AAA 1.5V BATTERIES  
1. Press MODE button to select the Sweep function.  
2. Press the top of the UP/DOWN button to move the air  
deflector on the unit in an up and down motion. The air-  
flow symbol displays motion.  
BATTERY COMPARTMENT  
COVER  
3. Press the bottom of the UP/DOWN button. The airflow  
deflector stops at a given angle. The airflow symbol dis-  
play remains in a fixed position.  
4. Press ON/OFF button to send changes to unit from re-  
mote control.  
Fig. 2 Location of Batteries on Remote Control  
NOTE: If placing the air deflector in a fixed position is chosen,  
the deflector stops at the angle in which it was located when  
the ON/OFF button was pressed.  
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SETTING CLOCK  
HEATING  
1. Slide down front cover of controller below ON/OFF but-  
ton. See Fig. 4.  
2. Press CLOCK button using the tip of a pen or paper clip.  
See Fig. 5.  
3. Press UP/DOWN button to set minutes.  
4. Press MODE button. The hour digits will flash.  
5. Press to UP/DOWN button to set the hour.  
COOLING  
FAN ONLY  
DEHUMIDIFICATION  
6. To confirm current clock settings, press CLOCK button  
once again using the tip of a pen or paper clip. The remote  
control will automatically go back to previous display  
and the clock is displayed.  
A
AUTO  
Fig. 3 Operating Mode Indicators on  
Remote Control  
3
INFRARED SIGNAL TRANSMITTER WINDOW  
TEMPERATURE SENSOR  
CLOCK  
TRANSMISSION INDICATOR  
LOW BATTERY INDICATOR  
UP/DOWN BUTTON  
TIMER START/STOP  
ONE-TIME/DAILY INDICATORS  
START  
STOP  
1
2
3
SLEEP  
DAILY  
MODE BUTTON  
FAN  
MODE  
SWEEP  
OPERATION MODE INDICATORS -  
COOLING, FAN, HEATING,  
DEHUMIDIFICATION, AUTO  
DESIRED TEMPERATURE  
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SENSOR ACTIVE INDICATOR  
FAN INDICATORS -  
LOW, MEDIUM, HIGH, AUTO  
A
A
SWEEP INDICATOR  
ON/OFF BUTTON  
TIMER  
SET  
TIMER SET BUTTONS*  
SLIDE DOWN PANEL  
DELA  
Y
CLEAR  
CLOCK BUTTON*  
ROOM  
CLOCK  
SENSE  
ROOM TEMPERATURE BUTTON*  
DELAY BUTTON*  
LOCAL SENSING BUTTON  
beep  
UNIT  
S
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A
P
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3
1
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2
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SW  
EE  
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REMOTE  
*Buttons located behind slide down panel.  
Fig. 4 Remote Control  
PROGRAMMING TIME PERIODS — The duct free sys-  
tem can be programmed to operate at desired levels. Be sure to  
set the clock before programming the system.  
• Increments of time are in 10 minute intervals.  
• The Timer Start/Stop indicator light on the unit is on  
when a time period is set. See Fig. 4.  
START  
STOP  
1
2
3
SLEEP  
DAILY  
MODE  
FAN  
SWEEP  
• The remote control displays the Start/Stop time of the  
time period that is closest to the current time. If the unit  
is ON, “STOP” and the time period is displayed. If the  
unit is OFF, “START” and the time period is displayed.  
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IMPORTANT: Be sure to point the remote control  
toward the unit while pressing the TIMER or SET  
buttons.  
TIMER  
SET  
DELA  
Y
CLEAR  
ROOM  
CLOCK  
SENSE  
Setting Start/Stop Time — Timer feature is used to set unit  
operation Start/Stop times. Three different time periods up to  
10 hours apart and within 24 hours can be programmed using  
this feature.  
1. Slide down front cover of controller below ON/OFF but-  
ton. See Fig. 4.  
Fig. 5 Location of Clock Set Button  
on Remote Control  
4
2. Press the TIMER button. Each time the button is pressed  
the next Start or Stop set time appears on the display. See  
Fig. 6.  
SLEEP  
START  
TIMER  
STOP  
3. Press UP/DOWN button to set the time.  
INDICATOR  
1
2
3
SLEEP  
DAILY  
4. To set another time period, press the TIMER SET button  
to go to another time period and repeat steps 2 and 3  
above.  
MODE  
FAN  
SWEEP  
5. Press the SET button to set the displayed time when done.  
See Fig. 7.  
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NOTE: If changes are not made within 10 seconds, the remote  
control will return to its previous display. To correct an error,  
the programmed Timer settings must be cancelled and re-  
entered. See Canceling Daily Timer section.  
A
A
Fig. 8 Sleep Timer Indicator on  
Sleep Timer — The Sleep Timer function allows the desired  
temperature to be updated while the occupant is sleeping. The  
temperature in the room air gradually rises until this time peri-  
od is exited. The unit will then return to the previous tempera-  
ture set. To set the Sleep Timer, follow the steps below:  
1. Slide down front cover of controller below ON/OFF but-  
ton. See Fig. 4.  
Remote Control Display  
Canceling Daily Timer — This function will cancel the se-  
lected Daily Timer program.  
1. Slide down front cover of controller below ON/OFF but-  
ton. See Fig. 4.  
2. Press the TIMER button to select the time period that will  
be activated daily.  
2. Press the TIMER button until Sleep function is reached.  
3. Select the “SLEEP” timer period.  
4. Press UP/DOWN button to set the start time and press  
Timer button to set stop time.  
3. Press the SET button and hold until the word “DAILY”  
disappears on the display.  
5. Press the SET button to set the display time when done.  
See Fig. 8.  
Setting Daily Timer — Time periods can be programmed to  
operate the system at set times during a 24-hour period. This  
timer function can be used for all 3 time periods and sleep peri-  
od described above.  
NOTE: The daily timer operates only when there is a direct  
line of sight between the controller and the unit.  
1. Slide down front cover of controller below ON/OFF but-  
ton. See Fig. 4.  
2. Press the TIMER button to select the time period that will  
be activated daily.  
3. Press and hold the SET button until the word “DAILY”  
appears on the display. See Fig. 9.  
4. Press the SET button again to remove the daily operation  
from the selected time period. Be sure to point remote  
control toward the unit while pressing the SET button.  
Canceling Specific Start/Stop Time Period — One or more  
timers can be cancelled by performing the following steps:  
1. Slide down front cover of controller below ON/OFF but-  
ton. See Fig. 4.  
2. Press the TIMER button and select desired Timer to can-  
cel (1,2,3 or Sleep).  
3. Press CLEAR button to cancel the selected Timer period.  
The Start/Stop times will disappear from the display.  
4. Press the SET button to confirm the cancellation. Be sure  
to point remote control toward the unit while pressing the  
SET button.  
4. Press the SET button again to confirm the daily operation  
for the selected time period. Be sure to point remote con-  
trol toward the unit while pressing the SET button.  
Canceling All Time Periods — All timers can be cancelled by  
performing the following steps:  
1. Slide down front cover of controller below ON/OFF but-  
ton. See Fig. 4.  
START  
1
START  
2
START  
2. Press the TIMER button.  
STOP  
1
STOP  
2
STOP  
3
3. Press and hold the CLEAR button until all Start/Stop  
times disappear from the display.  
4. Check to be sure timer light is off on unit.  
Fig. 6 Timer Display Set Up on Remote Control  
5. Press the SET button to confirm the cancellation. Be sure  
to point the remote control toward the unit while pressing  
the SET button.  
ROOM AIR TEMPERATURE DISPLAY — The current room  
air temperature is automatically displayed when the remote  
controller is powered off. To display the room air temperature  
when the unit is powered on:  
START  
STOP  
TIMER  
INDICATOR  
1
2
3
SLEEP  
DAILY  
MODE  
FAN  
SWEEP  
1. Slide down front cover of controller below ON/OFF  
button. See Fig. 4.  
2. Press the ROOM button. The current room air tempera-  
ture will be displayed for several seconds, then disappear.  
See Fig. 10.  
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Fig. 7 Set Timer Indicator on  
Remote Control Display  
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To set Local Sense function:  
1. Slide down front cover of controller below ON/OFF  
button. See Fig. 4.  
START  
STOP  
2. Press the SENSE button. The “House” symbol will ap-  
pear on the display screen. See Fig. 12.  
3. Place the remote control in desired location in room. Be  
sure there is a direct line between the remote control and  
the unit.  
DAILY  
1
2
3
DAILY  
TIMER  
INDICATOR  
MODE  
FAN  
SWEEP  
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To Cancel Local Sense function — While in “Local Sense”  
function, press the SENSE button. The “House” symbol will  
disappear from the display screen and Local Sense function  
will be canceled.  
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Fig. 9 Daily Timer Indicator on  
Remote Control Display  
Fig. 10 Room Air Temperature Indicator on  
Remote Control Display  
STOP  
3
DAILY  
DELAYED START/STOP — This function will delay the  
Start/Stop function in increments of 1 hour. Delayed Start/Stop  
can be programmed with the unit turned ON or OFF.  
PROGRAMMING DISPLAY WITH UNIT ON  
With the unit turned ON:  
1. Slide down front cover of controller below ON/OFF  
button. See Fig. 4.  
2. Press the DELAY button. The clock will advance 1 hour  
and the word “STOP” and number “3” will flash. See  
Fig. 11.  
3. Press the DELAY button once to advance the clock an ad-  
ditional hour until desired delayed time is reached. Be  
sure to point the remote control toward the unit while  
pressing the DELAY button.  
4. The word “STOP” will stop flashing when the command  
has been transmitted and received by the unit.  
START  
With the unit turned OFF:  
3
1. Slide down front cover of controller below ON/OFF  
button. See Fig. 4.  
DAILY  
2. Press the DELAY button. The clock will advance 1 hour  
and the word “START” and number “3” will flash. See  
Fig. 11.  
3. Press the DELAY button once to advance the clock an ad-  
ditional hour until desired delayed time is reached. Be  
sure to point the remote control toward the unit while  
pressing the DELAY button.  
PROGRAMMING DISPLAY WITH UNIT OFF  
Fig. 11 Delayed Start/Stop Indicators on  
Remote Control Display  
4. The word “START” will stop flashing when the com-  
mand has been transmitted and received by the unit.  
Canceling Delayed Start/Stop — To cancel the Delayed Start/  
Stop function, follow the instructions in Canceling Specific  
Start/Stop Time Period section.  
LOCAL  
SENSE  
INDICATOR  
MODE  
FAN  
SWEEP  
NOTE: The Delay setting is stored in Time period 3.  
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LOCAL SENSE FUNCTION (2-Way Remote Control) —  
The local sense function allows the remote control to operate  
by transmitting the room air temperature to the unit at regular  
intervals from wherever the controller is located in the room.  
The unit will then operate to make the air near the remote con-  
trol reach the desired temperature.  
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Fig. 12 Local Sense Indicator on Remote  
Control Display  
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Unit Operation (Fig. 13 and 14) The system can  
be operated from the unit in the event the remote control is not  
working or is misplaced.  
OPERATION  
SWITCH  
UNIT  
FILTER  
AIR CON  
TIMER  
POWER  
TURN UNIT ON — Slide the Operation Switch on the unit to  
the AUTO position. The unit will operate at a temperature set-  
ting of 74 F and will automatically select the required operation  
mode and fan speed to maintain this setting.  
COMP.  
IMPED.  
PRESS.  
AUTO  
OFF  
REMOTE  
TURN UNIT OFF — Slide the Operation Switch on the unit  
to the OFF position.  
AUTO  
OFF  
REMOTE  
REMOTE CONTROL OPERATION — To return the sys-  
tem to Remote Control operation, slide the Operation Switch  
on the unit to the REMOTE position. The remote control  
will now operate the system. Refer to Remote Control Oper-  
ation section for remote control instructions.  
(CLOSE UP  
VIEW)  
Fig. 13 40CG,CS Indoor Unit Display Panel  
CLEANING AND MAINTENANCE  
5. Shake filter to remove excess water and dry thoroughly.  
6. Replace filter by sliding filter behind front grille until fil-  
ter snaps in place. See Fig. 15.  
7. Slide Operation Switch on unit to OFF position to cancel  
Filter status lamp.  
8. Slide Operation Switch on unit to REMOTE position to  
resume remote control operation.  
To avoid the possibility of electric shock, always turn off  
power to the system before performing any cleaning or  
maintenance to the system. Turn off the outdoor disconnect  
switch located near outdoor unit. Be sure to disconnect  
indoor unit if on a separate switch.  
Indoor Unit Front Panel To clean the front panel on  
the indoor unit, wipe the outside with a soft, dry cloth. If neces-  
sary, a mild liquid detergent can be applied and wiped off with  
a dry cloth.  
Operating the system with dirty air filters may damage the  
indoor unit and could cause reduced cooling performance.  
Intermittent system operation, frost build-up on indoor coil  
and blown fuses may also result from system operation  
with dirty air filters.  
When cleaning the front panel, do not use water hotter than  
105 F and do not pour water onto the fan coil.  
Do not use abrasive or petroleum based cleaners as they  
may damage the front panel.  
Air Filters Remove and clean the air filters when the  
Filter lamp on the unit display panel is lit. See Fig. 14 and 15.  
NOTE: If air filters show signs of excessive wear or are torn,  
they must be replaced. Contact your local dealer for replace-  
ment filters.  
1. Open front panel on unit.  
2. Pull filters down to remove.  
3. Vacuum filters.  
Indoor Unit Coil To clean the indoor unit coil, remove  
the front panel and vacuum the coil fins. Avoid bending or  
damaging the fins.  
4. Clean with warm water.  
B
C
D
E
FILTER  
AIR CON  
LAMPS  
FEATURE  
Infrared Receiver  
FILTER Lamp  
DESCRIPTION  
Receives transmissions from the remote controller  
Lights when the air filters require cleaning  
TIMER  
POWER  
A
B
G
F
COMP.  
IMPED.  
PRESS.  
H
AIR CON Lamp  
Lights when the air conditioner operates  
Flashes when defrosting  
Lights when TIMER Start or Stop time is set  
Lights when the air conditioner is connected to the  
electrical supply of the proper line voltage  
Lights when a voltage problem exits  
C
D
E
F
TIMER Lamp  
POWER Lamp  
AUTO  
OFF  
REMOTE  
IMPEDANCE Lamp  
COMPRESSOR Lamp Lights when compressor operates  
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Flashes when the air conditioner is on standby  
PRESSURE Lamp  
Operation Switch  
Lights as low pressure warning  
A
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Flashes as a high pressure warning  
Turns the air conditioner ON, OFF, or puts it in AUTO operation  
Fig. 14 40CG,CS Indoor Unit Display Panel Features  
7
DIP Switch Settings The remote control contains  
seven DIP switches, located in the battery compartment, two of  
which control special system characteristics. See Fig. 16. The  
DIP switch default positions are set according to the model air  
conditioner installed, as per the following table.  
SWITCH  
1
2
3
4
5
6
7
POSITION  
ON OFF OFF OFF OFF ON OFF  
Switch No. 3 should be set as follows:  
OFF (default) — When only one air conditioner is installed  
in the room.  
ON — When there are two air conditioners with remote  
controllers installed in the room, in one of the remote control-  
lers this switch must be in the ON position. To activate the new  
switch setting, simultaneously press the MODE and ROOM  
buttons.  
Switch No. 4 should be set as follows:  
OFF — Displays temperature in °C, with a 24-hour clock  
format.  
ON — Displays temperature in °F, with a 12-hour clock  
(PM indictor) format.  
Fig. 15 Removing Air Filters  
To operate the special systems characteristics:  
1. Remove the batteries.  
2. Set the DIP switches to the required positions.  
Outdoor Unit Coil To clean the outdoor unit coil fol-  
low the steps below:  
3. Wait approximately 2 minutes and return batteries to  
proper position.  
Sharp fins and other metal parts on the outdoor unit coil  
can cause personal injury during cleaning.  
Energy Saving Recommendations The follow-  
ing recommendations will add greater efficiency to the duct  
free system:  
• Select a comfortable thermostat setting and leave it at  
chosen setting. Avoid continually raising and lowering  
the setting.  
• Keep unit filter clean. Frequent cleaning may be neces-  
sary depending on indoor air quality.  
• Use drapes, curtains or shades to keep direct sunlight  
from heating room on very hot days.  
1. Remove any dirt, debris or obstruction from discharge  
opening.  
2. Use a garden hose to spray water on coil. Be sure to spray  
between coil fins to remove any debris that may inhibit  
heat transfer.  
Condensate Drains Clean all condensate drains at  
the start of each cooling season. Check the flow by pouring wa-  
ter into the drain.  
• Do not obstruct front grille air intake on front panel.  
• Turn on air conditioning before indoor air becomes too  
uncomfortable.  
System Operation Check List The items outlined  
in the following list will help to assure proper system operation:  
• Be sure unit is connected directly to electrical supply.  
• Replace both remote control batteries at the same time  
when the Low Battery symbol appears.  
• Point the remote control toward the unit display panel  
when transmitting a command.  
ON  
OFF  
3
1
2
4
5 6  
7
• Place the remote control in a location where there is a  
direct line for transmission of data to the unit.  
• Select a moderate temperature setting. Extreme tempera-  
tures waste electricity.  
• Keep doors and windows closed while unit is operating.  
• Close air vents in unoccupied rooms to save electricity.  
• Contact an authorized service representative if a problem  
arises that cannot be easily resolved.  
• Do not perform cleaning or maintenance activities while  
unit is on.  
• Keep remote control out of direct sunlight and heat.  
• Keep display panel on unit away from direct sunlight and  
heat as this may interfere with remote control transmissions.  
• Do not block air intakes and outlets on the indoor or out-  
door units.  
ON  
2
ECE  
1
3
4
5
6
7
Fig. 16 DIP Switch Location in Remote Control  
8
TROUBLESHOOTING GUIDE  
Refer to the Troubleshooting Guide below before contacting your local dealer.  
PROBLEM  
POSSIBLE CAUSE  
SOLUTION  
No command transmitted to unit.  
Unit did not receive transmitted command.  
Press the ON/OFF button.  
Make sure that remote control is pointed at unit  
during command transmission.  
Unit/system does not work  
Unit is not properly connected.  
Automatic circuit breaker switches to OFF.  
Fuse burned.  
Check electrical connection.  
Reset breaker.  
POWER Lamp is not lit  
FILTER Lamp is lit  
Replace fuse.  
Filters require cleaning.  
Remove and clean filters.  
Move the operation switch to OFF, then REMOTE.  
Desired temperature setting is higher than  
room air temperature when operating in the  
COOLING mode.  
Desired temperature setting is lower than  
room air temperature when operating in the  
HEATING mode.  
Lower the desired temperature setting.  
Raise the desired temperature setting.  
Unit is working, but does not  
perform the required operation  
The control system is malfunctioning.  
There is no direct line of sight between the  
remote control and the unit.  
Move the operation switch to OFF, then REMOTE.  
Place the remote control where there is a direct  
line of sight to the unit.  
Incorrect operation or malfunction.  
Move the operation switch to OFF, then to REMOTE.  
Restart the unit. If the problem persists, call service  
personnel.  
Various indicator lamps behave  
other than listed in previous table  
The operation switch on the Display Panel  
is in the AUTO or OFF position.  
The remote control batteries are weak.  
The remote control is malfunctioning.  
Move the operation switch to the REMOTE position.  
Unit does not operate with the  
remote control  
Replace the batteries.  
Turn the unit ON and OFF using the operation switch.  
The remote control of another  
air conditioner interferes with  
unit operation  
Both remote control are transmitting on the  
same wavelength.  
Call Service Personnel.  
9
Dealer’s Name _____________________________________________________________________________________________  
Address ___________________________________________________________________________________________________  
Telephone _________________________________________ Purchase _____________________________________________  
Indoor Model #_____________________________________ Outdoor Model #_______________________________________  
Indoor Serial # _____________________________________ Outdoor Serial # _______________________________________  
10  
Copyright 2002 Carrier Corporation  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Book 1  
4
PC 111 Catalog No. 533-80052 Printed in U.S.A. Form OM38/40-2 Pg 12 2-02 Replaces: OM38/40-1  
Tab 3e 2f  

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