Fujitsu Air Conditioner Air Conditioner Ceiling Suspension Type User Manual

CONTENTS  
SAFETY PRECAUTIONS ....................................... 2  
FEATURES AND FUNCTIONS .............................. 3  
NAME OF PARTS ................................................... 4  
PREPARATION ....................................................... 6  
OPERATION ........................................................... 7  
TIMER OPERATION ............................................... 9  
SLEEP TIMER OPERATION ................................. 10  
ADJUSTING THE DIRECTION OF  
AIR CIRCULATION ............................................... 11  
SWING OPERATION ............................................ 12  
ENERGY SAVE OPERATION ............................... 13  
MANUAL AUTO OPERATION ............................. 13  
CLEANING AND CARE ........................................ 14  
TROUBLESHOOTING .......................................... 15  
OPERATING TIPS................................................. 16  
SAFETY PRECAUTIONS  
Before using the appliance, read these “PRECAUTIONS” thoroughly and operate in the correct way.  
The instructions in this section all relate to safety; be sure to maintain save operating conditions.  
“DANGER”, “WARNING” and “CAUTION” have the following meanings in these instructions:  
This mark indicates procedures which, if improperly performed, are most likely to  
DANGER!  
WARNING!  
CAUTION!  
result in the death of or serious injury to the user or service personnel.  
This mark indicates procedures which, if improperly performed, might lead to the  
death or serious injury of the user.  
This mark indicates procedures which, if improperly performed, might possibly result  
in personal harm to the user, or damage to property.  
Do not attempt to install this air conditioner by yourself.  
DANGER!  
This unit contains no user-serviceable parts. Always consult authorized service per-  
sonnel for repairs.  
When moving, consult authorized service personnel for disconnection and installa-  
tion of the unit.  
Do not become over-exposed to cold air by staying in the direct path of the airflow of  
the air conditioner for extended periods of time.  
Do not insert fingers or objects into the outlet port or intake grilles.  
Do not start and stop air conditioner operation by turning off the electrical breaker  
and so on.  
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn  
off the electrical breaker, and consult authorized service personnel.  
Provide occasional ventilation during use.  
CAUTION!  
Do not direct air flow at fireplaces or heating apparatus.  
Do not climb on, or place objects on, the air conditioner.  
Do not hang objects from the indoor unit.  
Do not set flower vases or water containers on top of air conditioners.  
Do not expose the air conditioner directly to water.  
Do not operate the air conditioner with wet hands.  
Turn off power source when not using the unit for extended periods.  
Always turn off the electrical breaker whenever cleaning the air conditioner or chang-  
ing the air filter.  
Connection valves become hot during Heating; handle with care.  
Check the condition of the installation stand for damage.  
Do not place animals or plants in the direct path of the air flow.  
When restarting after a long period of disuse in the winter:  
turn the power switch on at least 12 hours before starting the unit.  
Do not drink the water drained from the air conditioner.  
Do not use in applications involving the storage of foods, plants or animals, precision  
equipment, or art works.  
Do not apply any heavy pressure to radiator fins.  
Operate only with air filters installed.  
Do not block or cover the intake grille and outlet port.  
Ensure that any electronic equipment is at least one meter away from either the in-  
door or outdoor units.  
Avoid installing the air conditioner near a fireplace or other heating apparatus.  
When installing the indoor and outdoor unit, take precautions to prevent access to infants.  
Do not use inflammable gases near the air conditioner.  
En-2  
FEATURES AND FUNCTIONS  
AUTOMATIC OPERATION  
COOLING MODEL  
Merely press the START/STOP button, and the unit will  
begin automatic operation in the Cooling or Dry mode as  
appropriate, in accordance with the thermostat setting  
and the actual temperature of the room.  
HEAT & COOL MODEL (REVERSE CYCLE)  
Merely press the START/STOP button, and the unit will  
begin automatic operation in either the Heating, Cooling  
or Monitor modes as appropriate, in accordance with the  
thermostat setting and the actual temperature of the  
room.  
SLEEP TIMER  
COOLING MODEL  
When the SLEEP timer button is pressed during Cooling  
or Dry mode, the thermostat setting is gradually raised  
during the period of operation. When the set time is  
reached, the unit automatically turns off.  
HEAT & COOL MODEL (REVERSE CYCLE)  
When the SLEEP timer button is pressed during Heating  
mode, the air conditioner’s thermostat setting is gradu-  
ally lowered during the period of operation; during Cool-  
ing or Dry mode, the thermostat setting is gradually raised  
during the period of operation. When the set time is  
reached, the unit automatically turns off.  
WIRELESS REMOTE CONTROL UNIT  
The WIRELESS REMOTE CONTROL UNIT allows convenient  
control of air conditioner operation.  
OMNI-DIRECTIONAL AIR FLOW  
(SWING OPERATION)  
Three-dimensional control over air direction swing is possi-  
ble through dual use of both an UP/DOWN air direction swing  
and RIGHT/LEFT air direction swing. Since UP/DOWN air  
direction flaps operate automatically according to the oper-  
ating mode of the unit, it is possible to set air direction based  
on the operating mode.  
MILDEW-RESISTANT FILTER  
The AIR FILTER has been treated to resist mildew growth,  
thus allowing cleaner use and easier care.  
En-3  
NAME OF PARTS  
Instructions relating to heating(*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
Fig. 1  
1
7 6 5 4  
9
0
MANUAL  
AUTO  
SWING SWING TIMER OPERATION  
3
2
Fig. 2  
8
Fig. 4  
A
Electrical Breaker  
A
B
This breaker is installed during  
the electrical installation.  
Fig. 3  
Fig. 5  
F
G
SLEEP  
TIMER  
Q
R
C
CLOCK  
AUTO  
COOL  
MASTER  
SET SET  
FAN  
CLOCK  
AM  
PM  
OFF  
TIMER SLEEP  
ON  
OFF  
ON TIMER RESET  
CONTROL TEMP. TIME CONTROL  
S
U
V
H
I
D
E
H
M
ENERGY SAVE  
A
START  
STOP  
AUTO  
AUTO  
COOL  
DRY  
FAN  
HEAT  
HIGH  
MED  
LOW  
J
*
W
X
Y
T
SET  
SWING  
K
SET  
SWING  
N
O
P
Fig. 7  
TIME TEST  
ENERGY  
SAVE  
ADJUST RUN ACL  
L
M
Fig. 6  
En-4  
Fig. 1 Indoor Unit  
Fig. 5 Remote Control Unit  
1 Operating Control Panel (Fig. 2)  
2 MANUAL AUTO button  
C SLEEP Button  
D MASTER CONTROL Button  
E SET TEMP./SET TIME Buttons (  
F Signal Transmitter  
3 Remote Control Signal Receiver  
4 OPERATION Indicator Light (red)  
5 TIMER Indicator Light (green)  
6 SWING Indicator Light (orange)  
(HORIZONTAL SWING)  
)
G TIMER Button  
H FAN CONTROL Button  
I START/STOP Button  
J Battery compartment lid  
7 SWING Indicator Light (orange)  
(VERTICAL SWING)  
Inside of the battery compartment lid (Fig. 6)  
K AIR FLOW DIRECTION Button  
L ENERGY SAVE Button  
M CODE CHANGE (Slide Switch)  
Switching the remote control unit code.  
(Max. 4 units)  
If the TIMER indicator light flashes when  
the timer is operating, it indicates that a  
fault has occurred with the timer setting  
(See Page 17 Auto Restart).  
8 Intake Grille  
9 UP/DOWN Air Direction Flap  
0 RIGHT/LEFT Air Direction Louvers  
(behind UP/DOWN Air Direction Flap)  
N TIME ADJUST Button  
O TEST RUN Button  
This button is used when installing the air  
conditioner and should not be used under  
normal conditions as it will cause the air  
conditioner’s thermostat function to oper-  
ate incorrectly.  
Fig. 4 Outdoor Unit  
If this button is pressed during normal op-  
eration, the unit will switch to test opera-  
tion mode, and the indoor unit’s OPERA-  
TION indicator light and TIMER indicator  
light will begin to flash simultaneously.  
To stop the test operation mode, either  
press the TEST RUN button once again, or  
press the START/STOP button to stop the  
air conditioner.  
A Intake side  
B Outlet side  
P ACL Button  
Q Remote Control Unit Display (Fig. 7)  
R Transmit Indicator  
S Clock Display  
T Operating Mode Display  
U Timer Mode Display  
V Fan Speed Display  
W Temperature Set Display  
X Timer Set Indicator  
Y Temperature Set Indicator  
En-5  
PREPARATION  
CAUTION!  
Load Batteries (R03/LR03/AAA×4)  
Take care to prevent infants from  
accidentally swallowing batteries.  
When not using the remote control unit  
for an extended period, remove the  
batteries to avoid possible leakage and  
damage to the unit.  
If leaking battery fluid comes in contact  
with your skin, eyes, or mouth, immedi-  
ately wash with copious amounts of  
water, and consult your physician.  
Dead batteries should be removed  
immediately and disposed of properly,  
either in a battery collection receptacle  
or to the appropriate authority.  
Press and slide the battery compartment lid to open it.  
1
Insert batteries.  
Be sure to align the battery polarities (  
2
3
) correctly.  
Close the battery compartment lid.  
Set the Current time  
Do not attempt to recharge dry batteries.  
Press the TIME ADJUST button.  
Never mix new and used batteries, or  
batteries of different types.  
1
Use the tip of a ball-point pen or other small object to press the button.  
Batteries should last about one year  
under normal use. If the remote control  
unit’s operating range becomes appre-  
ciably reduced, replace the batteries and  
press the ACL button with the tip of a  
ballpoint pen or other small object.  
Use the (  
)SET TIME buttons to adjust the clock to  
2
3
the current time.  
button: Press to advance the time.  
button: Press to reverse the time.  
(Each time the buttons are pressed, the time will be advanced/reversed in  
one-minute increments; hold the buttons depressed to change the time  
quickly in ten-minute increments.)  
SET  
SWIN
SET  
SWING  
Press the TIME ADJUST button again.  
This completes the time setting and starts the clock.  
TIME EST  
ENERGY  
SAVE  
ADJUST RUN ACL  
To Use the Remote Control Unit  
The remote control unit must be pointed at signal receiver to operate correctly.  
Maximum operating range: Approximately 10 meters. (This may not apply when  
the battery is low or there is a obstacle.)  
When a signal is properly received by the air conditioner, a beep will be heard.  
If no beep is heard, press the remote control unit button again.  
Remote Control Unit Holder  
For Hand Held Use  
Insert  
Slide up  
Screws  
1 Mount the Holder.  
2 Set the Remote  
3 To remove the Remote  
Control Unit.  
Control Unit.  
For Wall Mount Use  
Insert  
Slide  
Screws  
Screw  
2 Set the Remote  
1 Mount the Holder.  
3 Attach the unit to the  
Control Unit.  
holder as shown.  
En-6  
OPERATION  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
To Select Mode Operation  
SLEEP  
TIMER  
Press the START/STOP button.  
The indoor unit’s OPERATION indicator light (red) will be on.  
1
The air conditioner will start operating.  
COOL  
Press the MASTER CONTROL button to select the de-  
2
sired mode.  
MASTER  
SET SET  
FAN  
CONTROL TEMP. TIME CONTROL  
Each time the button is pressed, the mode will change in the following  
order.  
c
c
c
AUTO  
COOL  
DRY  
d
d
*HEAT  
FAN  
About three seconds later, the entire display will reappear.  
Example: When set to COOL  
To Set the Thermostat  
SLEEP  
TIMER  
Press the SET TEMP. buttons.  
button: Press to raise the thermostat setting.  
button: Press to lower the thermostat setting.  
Thermostat setting range:  
AUTO .................................. 64 to 88 °F  
MASTER  
SET SET  
FAN  
CONTROL TEMP. TIME CONTROL  
* Heating ............................... 60 to 88 °F  
Cooling/Dry ........................ 64 to 88 °F  
The thermostat cannot be used to set room temperature during the FAN mode (the  
temperature will not appear on the remote control unit’s display).  
About three seconds later, the entire display will reappear.  
Example: When set to 82 °F  
The thermostat setting should be considered a standard value, and may differ  
somewhat from the actual room temperature.  
To Set the Fan Speed  
SLEEP  
TIMER  
Press the FAN CONTROL button.  
Each time the button is pressed, the fan speed changes in the following order:  
c
c
c
c
AUTO  
HIGH  
MED  
LOW  
AUTO  
About three seconds later, the entire display will reappear.  
MASTER  
SET SET  
FAN  
CONTROL TEMP. TIME CONTROL  
When set to AUTO:  
* Heating : Fan operates so as to optimally circulate warm air.  
However, the fan will operate at very low speed when the temperature  
of the air from the indoor unit is low.  
Cooling : As the room temperature approaches that of the thermostat setting,  
the fan speed becomes slower.  
Example: When set to AUTO  
Fan  
: The fan alternately turns on and off; when on, the fan runs at the low  
fan speed.  
The fan will operate at a very low setting during Monitor operation  
and at the start of the Heating mode.  
To Stop Operation  
Press the START/STOP button.  
The OPERATION indicator light (red) will turn off.  
En-7  
OPERATION  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
About Mode Operation  
AUTO:  
COOLING MODEL  
When the room temperature is 4 °F  
Cooling Operation  
higher than the set temperature, the  
mode will switch between Cooling and  
Drying.  
Dry Operation  
Thermostat control  
During the Drying mode operation, the  
FAN setting should be switched to LOW  
for a gently cooling effect during which  
the fan may temporarily stop rotating.  
4 °F  
If the mode automatically selected by the  
Setting temperature  
unit is not satisfactory, see page 7 for in-  
structions on changing the mode setting  
(COOL, DRY, FAN).  
AUTO (* AUTO CHANGEOVER):  
HEAT & COOL MODEL (Reverse cycle)  
When AUTO CHANGEOVER is selected, the air conditioner selects the appropri-  
ate operation mode (Cooling or Heating) according to your room’s present tem-  
perature.  
When AUTO CHANGEOVER is first selected, the fan will operate at very low speed  
for about one minute while the unit determines the current conditions of the  
room and accordingly selects the proper operation mode.  
When the air conditioner has adjusted your room’s temperature to near the ther-  
mostat setting, it will begin monitor operation. In the monitor operation mode,  
the fan will operate at low speed. If the room temperature subsequently changes,  
the air conditioner will once again select the appropriate operation (Heating, Cool-  
ing) to adjust the temperature to the value set in the thermostat. (The monitor  
operation range is ±4 °F relative to the thermostat setting.)  
If the mode automatically selected by the unit is not satisfactory, see page 7 for  
instructions on changing the mode setting (HEAT, COOL, DRY, FAN).  
*Heating:  
Use to warm your room.  
* During Heating mode:  
Set the thermostat to a temperature set-  
ting that is higher than the current room  
temperature. The Heating mode will not  
operate if the thermostat is set lower than  
the actual room temperature.  
When Heating mode is selected, the air conditioner will operate at very low fan  
speed for about 3 to 5 minutes, after which it will switch to the selected fan set-  
ting. This period of time is provided to allow the indoor unit to warm up before  
begin full operation.  
When the room temperature is very low, frost may form on the outside unit, and  
its performance may be reduced. In order to remove such frost, the unit will  
automatically enter the defrost cycle from time to time. During Automatic De-  
frosting operation, the OPERATION indicator light (red) will flash, and the heat  
operation will be interrupted.  
During Cooling/Dry mode:  
Set the thermostat to a temperature set-  
ting that is lower than the current room  
temperature. The Cooling and Dry modes  
will not operate if the thermostat is set  
higher than the actual room temperature  
(in Cooling mode, the fan alone will oper-  
ate).  
Cooling:  
Use to cool your room.  
During Fan mode:  
The heat and cool functions of this unit  
cannot operate in the Fan mode.  
Dry:  
Use for gently cooling while dehumidifying your room.  
You cannot heat the room during Dry mode.  
During Dry mode, the unit will operate at low speed; in order to adjust room  
humidity, the indoor unit’s fan may stop from time to time. Also, the fan may  
operate at very low speed when detecting room humidity.  
The fan speed cannot be changed manually when Dry mode has been selected.  
Fan:  
Use to circulate the air throughout your room.  
En-8  
TIMER OPERATION  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
Before using the timer function, be sure that the remote control unit is set to the current time (See page 6).  
To Use the ON timer or OFF timer  
SLEEP  
TIMER  
Press the START/STOP button  
(if the unit is already operating, proceed to step 2).  
The indoor unit’s OPERATION indicator light (red) will turn on.  
TIMER  
ON  
1
2
MASTER  
SET SET  
CONTROL TEMP. TIME CONTROL  
FAN  
Press the TIMER button to select the OFF timer or ON  
timer operation.  
Each time the button is pressed the timer function changes in the follow-  
ing order:  
To Cancel the Timer  
Use the TIMER button to select “TIMER  
RESET.”  
The air conditioner will return to normal  
operation.  
c
c
c
RESET  
OFF  
ON  
PROGRAM(OFF ON, OFF ON) d  
To Change the Timer Settings  
The indoor unit’s TIMER indicator light (green) will turn on.  
Perform steps 2 and 3.  
To Stop Air Conditioner Operation  
while the Timer is Operating  
Use the SET TIME buttons to adjust the desired OFF  
time or ON time.  
Set the time while the time display is flashing (the flashing will continue  
for about five seconds).  
3
Press the START/STOP button.  
To Change Operating Conditions  
If you wish to change the operating  
button: Press to advance the time.  
button: Press to reverse the time.  
conditions (Mode, Fan Speed, Thermostat  
Setting), after making the timer setting,  
wait until the entire display reappears, then  
press the appropriate buttons to change to  
the desired operating condition.  
About five seconds later, the entire display will reappear.  
To Use the PROGRAM timer  
Press the START/STOP button  
SLEEP  
TIMER  
TIMER  
ON  
1
(if the unit is already operating, proceed to step 2).  
The indoor unit’s OPERATION indicator light (red) will turn on.  
MASTER  
SET SET  
FAN  
CONTROL TEMP. TIME CONTROL  
Set the desired times for OFF timer and ON timer.  
2
See the section “To Use the ON timer or OFF timer” to set the desired  
To Cancel the Timer  
mode and times.  
About five seconds later, the entire display will reappear.  
The indoor unit’s TIMER indicator light (green) will turn on.  
Use the TIMER button to select “TIMER  
RESET.”  
The air conditioner will return to normal  
operation.  
Press the TIMER button to select the PROGRAM timer  
3
To Change the Timer Settings  
operation (either OFF ON or OFF ON will display).  
1. Follow the instructions given in the section  
To Use the ON Timer or OFF Timer” to se-  
lect the timer setting you wish to change.  
The display will alternately show “OFF timer” and “ON timer”, then change  
to show the time setting for the operation to occur first.  
The PROGRAM timer will begin operation. (If the ON timer has been  
selected to operate first, the unit will stop operating at this point.)  
2. Press the TIMER button to select either  
OFF ON or OFF ON.  
To Stop Air Conditioner Operation  
while the Timer is Operating  
About five seconds later, the entire display will reappear.  
Press the START/STOP button.  
To Change Operating Conditions  
If you wish to change the operating  
conditions (Mode, Fan Speed, Thermostat  
Setting), after making the timer setting,  
wait until the entire display reappears, then  
press the appropriate buttons to change to  
the desired operating condition.  
En-9  
TIMER OPERATION  
About the PROGRAM timer  
About the ON timer  
The PROGRAM timer allows you to integrate OFF timer  
and ON timer operations in a single sequence. The se-  
quence can involve one transition from OFF timer to ON  
timer, or from ON timer to OFF timer, within a twenty-  
four hour period.  
The timer function is designed to bring your room to a  
comfortable temperature by the set time; as a result, the  
unit automatically begins operation before the set time  
so that the room reaches the desired temperature by the  
time set on the timer.  
The first timer function to operate will be the one set near-  
est to the current time. The order of operation is indi-  
cated by the arrow in the remote control unit’s display  
(OFF ON, or OFF ON).  
The hotter it is in summer, or the colder it is in winter, the  
earlier that operation will begin.  
* During Heating Operation ....... from 45 to 10 minutes be-  
fore set time.  
One example of PROGRAM timer use might be to have  
the air conditioner automatically stop (OFF timer) after  
you go to sleep, then start (ON timer) automatically in  
the morning before you rise.  
During Cooling/Dry Operation ... from 20 to 10 minutes be-  
fore set time.  
During Fan Operation ..............at the set time.  
SLEEP TIMER OPERATION  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
Unlike other timer functions, the SLEEP timer is designed to set the duration of time in which the unit does not operate.  
To Use the SLEEP timer  
While the air conditioner is operating or stopped, press the  
SLEEP  
TIMER  
SLEEP button.  
SLEEP  
Both the indoor unit’s OPERATION indicator light (red) and the TIMER indicator  
light (green) will turn on.  
COOL  
MASTER  
SET SET  
FAN  
To Change the Timer Settings  
CONTROL TEMP. TIME CONTROL  
Press the SLEEP button once again and set the time using the  
SET TIME buttons.  
Set the time while the Timer Mode Display is flashing (the flashing will continue for  
about five seconds).  
To Cancel the Timer:  
Use the TIMER button to select “TIMER  
RESET”.  
The air conditioner will return to normal  
operation.  
button: Press to advance the time.  
button: Press to reverse the time.  
To Stop the Air Conditioner During  
Timer Operation:  
About five seconds later, the entire display will reappear.  
Press the START/STOP button.  
About the SLEEP timer  
To prevent excessive heating or cooling during sleep, the SLEEP timer function automatically modifies the thermostat setting  
in accordance with the time setting. When the set time has elapsed, the air conditioner completely stops.  
*During Heating operation:  
During Cooling/Dry operation:  
When the SLEEP timer is set, the thermostat setting is  
automatically lowered 2 °F every thirty minutes. When the  
thermostat has been lowered a total of 8 °F, the thermostat  
setting at that time is maintained until the set time has elapsed,  
at which time the air conditioner automatically turns off.  
When the SLEEP timer is set, the thermostat setting is auto-  
matically raised 2 °F every sixty minutes. When the thermo-  
stat has been raised a total of 4 °F, the thermostat setting at  
that time is maintained until the set time has elapsed, at which  
time the air conditioner automatically turns off.  
SLEEP timer setting  
SLEEP timer setting  
2 °F  
Set time  
4 °F  
6 °F  
8 °F  
30  
minutes  
1 hour  
1 hour  
4 °F  
2 °F  
1 hour  
30 minutes  
Set time  
En-10  
ADJUSTING THE DIRECTION OF AIR CIRCULATION  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
Vertical (up-down) direction of airflow is adjusted by pressing the remote control unit’s AIR FLOW DIRECTION VERTICAL SET  
button. Horizontal (right-left) direction of airflow is adjusted by pressing the remote control unit’s AIR FLOW DIRECTION  
HORIZONTAL SET button.  
DANGER!  
Vertical Air Direction Adjustment  
Never place fingers or foreign objects inside  
the outlet port could cause personal injury.  
Press the AIR FLOW DIRECTION VERTICAL SET button .  
Each time the button is pressed, the air direction range will change as follows:  
Always use the remote control unit’s  
1
2
3
4
5
AIR FLOW DIRECTION button to adjust  
the UP/DOWN air direction flap or  
RIGHT/LEFT air direction louvers. At-  
tempting to move them manually  
could result in improper operation; in  
this case, stop operation and restart.  
The louvers should begin to operate  
properly again.  
Types of Air flow Direction Setting:  
1,2,3 During Cooling/Dry Modes  
1,2,3,4,5 : *During Heating mode  
:
1
2
The remote control unit’s display does  
not change.  
3
4
During use of the Cooling and Dry  
modes, do not set the UP/DOWN air  
direction flap in the range 4 to 5 for  
long periods of time, since water vapor  
may condense near the outlet port and  
drops of water may drip from the air  
conditioner.  
Fig. 8  
5
Use the air direction adjustments within the ranges shown above.  
The vertical airflow direction is set automatically as shown, in accordance with  
the type of operation selected.  
When used in a room with infants, chil-  
dren, elderly or sick persons, the air  
direction and room temperature  
should be considered carefully when  
adjusting settings.  
Horizontal flow 1  
Downward flow 5  
:
During Cooling/Dry mode  
: * During Heating mode  
During AUTO mode operation, for the first minute after beginning operation,  
airflow will be horizontal 1; the air direction cannot be adjusted during this pe-  
riod.  
Horizontal Air Direction Adjustment  
SET  
SWING  
SET  
SWING  
Press the AIR FLOW DIRECTION HORIZONTAL SET button .  
Each time the button is pressed, the air direction range will change as follows:  
TIME TEST  
DJUST RUN ACL  
1
2
3
4
5
Example: When set to vertical air direc-  
The remote control unit’s display does  
not change.  
tion  
RIGHT/LEFT  
air direction louvers  
Use the air direction adjustments within the ranges shown above.  
SET  
SWING  
SET  
SWING  
1
2
3
5
4
TIME E
ENERGY  
SAVE  
ADJUST
Example: When set to horizontal air di-  
rection  
Fig. 9  
En-11  
SWING OPERATION  
Begin air conditioner operation before performing this procedure  
To select Vertical airflow SWING Operation  
Press the AIR FLOW DIRECTION VERTICAL SWING button .  
The SWING indicator light (VERTICAL SWING) (orange) will turn on.  
In this mode, the UP/DOWN air direction flap will swing automatically to direct the  
air flow both up and down.  
SET  
SWING  
SET  
SWING  
TTEST  
ENERGY  
SAVE  
UN ACL  
To Stop Vertical airflow SWING Operation  
Example: When set to vertical swing  
Press the AIR FLOW DIRECTION VERTICAL SWING button  
once again.  
The SWING indicator light (VERTICAL SWING) will turn off.  
Airflow direction will return to the setting before swing was begun.  
About Vertical Airflow Swing Operation  
The range of swing is relative to the currently set airflow  
If the swing range is not as desired, use the remote con-  
trol unit’s AIR FLOW DIRECTION VERTICAL SET button to  
change the range of swing.  
direction.  
Air flow direction set  
Range of swing  
1 to 3  
The SWING operation may stop temporarily when the air  
conditioner’s fan is not operating, or when operating at  
very low speeds.  
1
2
3
4
5
1 to 3  
2 to 4  
3 to 5  
1 to 5 (All range)  
During use of the Cooling and Dry modes, do not set the  
air UP/DOWN direction flap, in the Heating range (4 to  
5) for long periods of time, since water vapor may con-  
dense near the outlet port and drops of water may drip  
from the air conditioner.  
Air direction range (See page 11, Fig. 8)  
To select Horizontal Airflow SWING Operation  
Press the AIR FLOW DIRECTION HORIZONTAL SWING button.  
The SWING indicator light (HORIZONTAL SWING) (orange) will turn on.  
In this mode, the RIGHT/LEFT air direction louvers will swing automatically to direct  
the airflow both right and left.  
SET  
SWING  
SET  
SWING  
TIME TEST  
ENERGY  
SAVE  
ADJUST RUN AC
To Stop Horizontal airflow SWING Operation  
Example: When set to horizontal swing  
Press the AIR FLOW DIRECTION HORIZONTAL SWING button  
once again.  
The SWING indicator light (HORIZONTAL SWING) will turn off.  
Airflow direction will return to the setting before swing was begun.  
About Horizontal Airflow Swing Operation  
The range of swing is relative to the currently set airflow  
If the swing range is not as desired, use the remote con-  
trol unit’s AIR FLOW DIRECTION HORIZONTAL SET but-  
ton to change the range of swing.  
direction.  
Air flow direction set  
Range of swing  
1 to 5 (All range)  
1 to 3  
The SWING operation may stop temporarily when the air  
conditioner’s fan is not operating, or when operating at  
very low speeds.  
1
2
3
4
5
2 to 4  
3 to 5  
1 to 5 (All range)  
Air direction range (See page 11, Fig.9)  
En-12  
ENERGY SAVE OPERATION  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
The air conditioner can be operated while keeping energy consumption costs down.  
How To Use the ENERGY SAVE OPERATION  
SET  
SWING  
SET  
SWING  
Press the START/STOP button  
(if the unit is already operating, proceed to step 2).  
The indoor unit’s OPERATION indicator light (red) will turn on.  
1
TIME TEST  
ENERGY  
SAVE  
ADJUST RUN ACL  
Press the MASTER CONTROL button to select the  
COOL, DRY, *HEAT mode.  
2
3
To Cancel the ENERGY SAVE:  
Press the ENERGY SAVE button.  
ENERGY SAVE can only be used if the MASTER CONTROL button is used  
to select the “COOL”, “DRY” or *“HEAT”.  
Press the ENERGY SAVE button.  
About the ENERGY SAVE  
The air conditioner saves energy costs by controlling the thermostat temperature setting.  
*During Heating operation:  
During Cooling/Dry operation:  
The thermostat temperature setting decreases by 2 °F as  
soon as the ENERGY SAVE button is pressed, and then de-  
creases by another 2 °F every thirty minutes.  
In this manner, energy is saved by continuing to heat at a  
thermostat temperature of 8 °F less than the setting.  
The thermostat temperature setting increases by 2 °F as soon  
as the ENERGY SAVE button is pressed, and then increases  
by another 2 °F after one hour has passed.  
In this manner, energy is saved by continuing to cool or dry  
at a thermostat temperature of 4 °F more than the setting.  
ENERGY SAVE setting  
ENERGY SAVE setting  
Set temperature  
2 °F  
4 °F  
6 °F  
8 °F  
1 hour  
ENERGY  
SAVE ON  
ENERGY  
SAVE ON  
30 minutes  
1 hour  
4 °F  
2 °F  
Set temperature  
1 hour 30 minutes  
MANUAL AUTO OPERATION  
Use the MANUAL AUTO operation in the event the remote control unit is lost or otherwise unavailable.  
How To Use the Main Unit Controls  
Press the MANUAL AUTO button on the main unit operating  
CAUTION!  
control panel.  
To stop operation, press the MANUAL AUTO button once again.  
Do not press the MANUAL AUTO but-  
ton with wet hands or pointed objects,  
otherwise an electric shock or malfunc-  
tion may occur.  
When the air conditioner is operated  
with the controls on the Main unit, it  
will operate under the same mode as  
the AUTO mode selected on the re-  
mote control unit (see page 8).  
The fan speed selected will be “AUTO”  
and the thermostat setting will be  
73 °F.  
En-13  
CLEANING AND CARE  
Before cleaning the air conditioner, be sure to turn it off and disconnect the power supply.  
Turn off the electrical breaker.  
CAUTION!  
Cleaning the Air Filter  
3. Re-attach the air filters to the intake grille.  
1. Pull the air filters upward to remove them.  
Remove the air filters by raising its handle while pulling  
it out towards you.  
The air filters fit onto the inside of the intake grille.  
Dust can be cleaned from the air filter either with a vacuum  
cleaner, or by washing the filter in a solution of mild de-  
tergent and warm water. If you wash the filter, be sure to  
allow it to dry thoroughly in a shady place before rein-  
stalling.  
Air filter  
If dirt is allowed to accumulate on the air filter, air flow  
will be reduced, lowering operating efficiency and increas-  
ing noise.  
During periods of normal use, the air filters should be  
cleaned every four weeks.  
2. Clean the air filters.  
Remove the dust from the air filters by vacuuming or  
washing them. After washing, allow the air filters to dry  
thoroughly in an area protected from sunlight.  
When used for extended periods, the unit may accumulate dirt inside, reducing its performance. We recommend that the  
unit be inspected regularly, in addition to your own cleaning and care. For more information, consult authorized service  
personnel.  
When cleaning the unit’s body, do not use water hotter than 100 °F, harsh abrasive cleansers, or volatile agents like  
benzene or thinner.  
Do not expose the unit body to liquid insecticides or hairsprays.  
If the unit will not be operated for a period of one month or more, be sure to allow the inner parts of the unit to dry  
thoroughly, in advance, by operating the unit in fan mode for half a day.  
En-14  
TROUBLESHOOTING  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the elec-  
trical breaker, and consult authorized service personnel.  
Merely turning off the unit’s power switch will not completely disconnect the unit from the power  
source. Always be sure to turn off the electrical breaker to ensure that power is completely off.  
WARNING!  
Before requesting service, perform the following checks:  
Symptom  
See Page  
Problem  
NORMAL  
FUNCTION  
Doesn’t operate immedi-  
ately:  
If the unit is stopped and then immediately started again, the com-  
pressor will not operate for about 3 minutes, in order to prevent  
fuse blowouts.  
Whenever the power switch is turned off then on again, the pro-  
tection circuit will operate for about 3 minutes, preventing unit  
operation during that period.  
Noise is heard:  
During operation and immediately after stopping the unit, the  
sound of water flowing in the air conditioner’s piping may be  
heard. Also, noise may be particularly noticeable for about 2 to 3  
minutes after starting operation (sound of coolant flowing).  
During operation, a slight squeaking sound may be heard. This is  
the result of minute expansion and contraction of the front cover  
due to temperature changes.  
*During Heating operation, a swoosh sound may be heard occa-  
sionally. This sound is produced by the Automatic Defrosting op-  
eration.  
16  
Odor:  
Occasionally an odor may be emitted from the indoor unit. This  
may be the result of room odor (furniture, tobacco, etc.) which  
have been taken into the air conditioner.  
Mist or steam are  
emitted:  
During Cooling or Dry operation, a thin mist may be seen emitted  
from the indoor unit. This results from the sudden Cooling of  
room air by the air emitted from the air conditioner, resulting in  
condensation and misting.  
*During Heating operation, the outdoor unit’s fan may stop, and  
steam may be seen rising from the unit. This is due to Automatic  
Defrosting operation.  
16  
Airflow is weak or stops:  
*When Heating operation is started, fan speed is temporarily very  
low, to allow internal parts to warm up.  
*During Heating operation, if the room temperature rises above  
the thermostat setting, the outdoor unit will stop, and the indoor  
unit will operate at very low fan speed. If you wish to warm the  
room further, set the thermostat for a higher setting.  
*During Heating operation, the unit will temporarily stop opera-  
tion (between 7 and 15 minutes) as the Automatic Defrosting mode  
operates. During Automatic Defrosting operation, the OPERATION  
indicator light will flash.  
16  
The fan may operate at very low speed during Dry operation or  
7
7
when the unit is monitoring the room’s temperature.  
In the monitor AUTO operation, the fan will operate at very low  
speed.  
Water is produced from  
the outdoor unit:  
*During Heating operation, water may be produced by the out-  
16  
door unit due to Automatic Defrosting operation.  
En-15  
TROUBLESHOOTING  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
Items to check  
Symptom  
See Page  
Is the power supply plug disconnected from its outlet?  
Has there been a power failure?  
CHECK ONCE Doesn’t operate at all:  
MORE  
Has a fuse blown out, or a circuit breaker been tripped?  
Is the timer operating?  
9 to 10  
Poor Cooling (or *Heating)  
performance:  
Is the air filter dirty?  
Is the air conditioner’s intake grille or outlet port blocked?  
Did you adjust the room temperature settings (thermostat) cor-  
rectly?  
Is there a window or door open?  
In the case of Cooling operation, is a window allowing bright sun-  
light to enter? (Close the curtains.)  
In the case of Cooling operation, are there heating apparatus and  
computers inside the room, or are there too many people in the  
room?  
The unit operates differ-  
ently from the remote con-  
trol unit’s setting:  
Are the remote control unit’s batteries dead?  
Are the remote control unit’s batteries loaded properly?  
6
If the problem persists after performing these checks, or if you notice burning smells, or the TIMER indicator light flashes, stop  
operation immediately, disconnect the power supply, and consult with authorized service personnel.  
OPERATING TIPS  
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).  
Operation and Performance  
*Heating Performance  
*Microcomputer-controlled Automatic Defrosting  
This air conditioner operates on the heat-pump principle,  
absorbing heat from outdoor air and transferring that heat  
indoors. As a result, the operating performance is reduced  
as outdoor air temperature drops. If you feel that insuffi-  
cient heating performance is being produced, we recom-  
mend you use this air conditioner in conjunction with  
another kind of heating appliance.  
When using the Heating mode under conditions of low  
outdoor temperature and high humidity, frost may form  
on the outdoor unit, resulting in reduced operating per-  
formance.  
In order to minimize this kind of reduced performance,  
this unit is equipped with a Microcomputer-controlled Au-  
tomatic Defrosting function. If excessive frost forms, the  
air conditioner will temporarily stop, and the defrosting  
circuit will operate briefly (for about 4 to 15 minutes).  
Heat-pump air conditioners heat your entire room by  
recirculating air throughout the room, with the result that  
some time may be required after first starting the air con-  
ditioner until the room is properly heated.  
During Automatic Defrosting operation, the OPERATION  
indicator light (red) will flash.  
*When Indoor and Outdoor Temperature are High  
Low Ambient Cooling  
When both indoor and outdoor temperatures are high  
during use of the heating mode, the outdoor unit’s fan  
may stop at times.  
When the outdoor temperature drops, the outdoor unit’s  
one of the fans may stop intermittently.  
En-16  
OPERATING TIPS  
AUTO Restart  
In Event of Power Interruption  
Should the power supply to the air conditioner be inter-  
rupted by a power failure, the air conditioner will restart  
automatically in the previously selected mode once the  
power is restored.  
Use of other electrical appliances (electric shaver, etc.) or  
nearby use of a wireless radio transmitter may cause the  
air conditioner to malfunction. In this event, temporarily  
disconnect the power supply, reconnect it, and then use  
the remote control unit to resume operation.  
Should a power failure occur during TIMER operation,  
the timer will be reset and the unit will begin (or stop)  
operating under the new timer setting. In this event, the  
TIMER indicator light (green) will flash (see page 5).  
Temperature and Humidity Range  
Cooling/Dry Mode  
*Heating Mode  
Outdoor temperature  
COOLING MODEL  
About 32 to 115 °F  
HEAT & COOL MODEL  
(Reverse Cycle)  
About 32 to 115 °F  
About 65 to 90 °F  
About 32 to 75 °F  
About 86 °F or less  
Indoor temperature  
Indoor humidity  
About 80 % or less  
If the unit is used for long pe-  
riods under high-humidity  
conditions, condensation  
may form on the surface of  
the indoor unit, and drip onto  
the floor or other objects un-  
derneath.  
If the air conditioner is operated under higher temperature conditions than those listed, the built-in protection circuit may  
operate to prevent internal circuit damage. Also, during Cooling and Dry modes, if the unit is used under conditions of  
lower temperatures than those listed above, the heat-exchanger may freeze, leading to water leakage and other damage.  
The operation is not guaranteed under the condition where the fan blade is not lotating, or blocked by ice. If the temperature  
is below 32 °F, the optional separate device may be required.  
Do not use this unit for any purposes other than the Cooling, (*)Heating, Dehumidifying, and air-circulation of rooms in  
ordinary dwellings.  
En-17  

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