Page 1
HE AT & CO OL M ODE L
(R E V E RS E CY CLE )
R OOM A IR CON DITIO N E R
W A LL M OU N T E D T Y PE
Indoor U nit
AS H7U S ACW
OP E R AT ING MA NUAL
Outdoor U nit
AOH7US AC
E nglis h
K E EP T HIS OPE RAT IO N M ANUAL
FOR FUTURE R EF E R E N CE
P/N 9308850058-02
Page 2
Fig. 6
Fig. 7
Fig. 8
Page 3
CONTENTS
SAFETY PRECAUTIONS .................................... En-1
FEATURES AND FUNCTIONS ........................... En-2
NAME OF PARTS ................................................ En-3
PREPARATION .................................................... En-4
OPERATION ........................................................ En-5
TIMER OPERATION ............................................ En-7
SLEEP TIMER OPERATION ................................ En-8
SAFETY PRECAUTIONS
● 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 excessively chilled by staying for lengthy periods in the direct cooling
airflow.
● Do not insert fingers or objects into the outlet port or intake grilles.
● Do not start and stop air conditioner operation by disconnecting the power supply
cord and so on.
● Take care not to damage the power supply cord.
● In the event of a malfunction (burning smell, etc.), immediately stop operation, dis-
connect the power supply plug, and consult authorized service personnel.
● If the power supply cord of this appliance is damaged, it should only be replaced by
the authorized service personnel, since special purpose tools and specified cord are
required.
ADJUSTING THE DIRECTION OF
AIR CIRCULATION .............................................. En-9
SWING OPERATION ......................................... En-10
MANUAL AUTO OPERATION .......................... En-10
CLEANING AND CARE ..................................... En-11
TROUBLESHOOTING ....................................... En-12
OPERATING TIPS.............................................. En-14
CAUTION!
● Provide occasional ventilation during use.
● 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.
● Do not pull power supply cord.
● Turn off power source when not using the unit for extended periods.
● Check the condition of the installation stand for damage.
● Do not place animals or plants in the direct path of the air flow.
● 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.
● Connection valves become hot during Heating; handle with care.
● 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 metre 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-1
Page 4
FEATURES AND FUNCTIONS
AUTOMATIC OPERATION
Merely press the START/STOP button, and the unit will begin automatic operation in either the Heating, Cooling, Dry,
or Monitor modes as appropriate, in accordance with the
thermostat setting and the actual temperature of the room.
SLEEP TIMER
When the SLEEP timer button is pressed during Heating
mode, the air conditioner’s thermostat setting is gradually
lowered during the period of operation; during cooling 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.
SWING OPERATION
REMOVABLE INTAKE GRILLE
The indoor unit’s INTAKE GRILLE can be removed for easy
cleaning and maintenance.
MILDEW-RESISTANT FILTER
The AIR FILTER has been treated to resist mildew growth,
thus allowing cleaner use and easier care.
SUPER QUIET OPERATION
When the FAN CONTROL button is used to select QUIET,
the unit begins super-quiet operation; the indoor unit’s airflow is reduced for quieter operation.
AIR CLEANING FILTER (Optional)
The optional Air Cleaning Filter (Model APS-03B) uses an
electrostatic principle to clean the air of fine particulate
matter such as tobacco smoke and plant pollen.
The Air Flow Direction Louvers swings automatically up and
down so that the air speeds to every nook and corner of
your room.
En-2
Page 5
NAME OF PARTS
Fig. 1 Indoor Unit
1 Operating Control Panel (Fig. 2)
2 POWER Switch
3 MANUAL AUTO button
4 Remote Control Signal Receiver
5 Indicator Lamps (Fig. 3)
6 OPERATION Indicator Lamp (red)
7 TIMER Indicator Lamp (green)
● If the TIMER indicator Lamp flashes when
the timer is operating, it indicates that a
fault has occurred with the timer setting
(See Page 14 Auto Restart).
8 SWING Indicator Lamp (orange)
9 Intake Grille (Fig. 4)
0 Air Filter
A Air Flow Direction Louver
B Right-Left Louvers
(behind Air Flow Direction Louver)
C Drain Hose
D Power Supply Plug
E Power Supply Cord
F Air Cleaning Filter (optional)
Fig. 5 Outdoor Unit
G Intake Port
H Outlet Port
I Pipe Unit
J Drain port (bottom)
Fig. 6 Remote Control Unit
K SLEEP button
L MASTER CONTROL button
M SET TEMP./SET TIME buttons ( )
N Signal Transmitter
O TIMER button
P FAN CONTROL button
Q START/STOP button
R AIR FLOW DIRECTION button
S SWING LOUVER button
Rear side (Fig. 7)
T TIME ADJUST button
U ACL button
(located inside battery compartment)
V TEST RUN button
● This button is used when installing the
conditioner, and should not be used under normal conditions, as it will cause the
air conditioner’s thermostat function to operate incorrectly.
● If this button is pressed during normal op-
eration, the unit will switch to test operation mode, and the Indoor Unit’s OPERATION Indicator Lamp and TIMER Indicator
Lamp 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.
W Remote Control Unit Display (Fig. 8)
X Transmit Indicator
Y Clock Display
Z Operating Mode Display
[ Timer Mode Display
\ Fan Speed Display
] Temperature Set Display
_ Timer Set Indicator
a Temperature Set Indicator
●
Refer to the fold-out page on the cover.
En-3
Page 6
PREPARATION
Turn on the Power
Connect the Power Supply Plug (Fig. 1 D) to an electri-
1
cal outlet; in the case of a direct line connection, turn
on the circuit breaker.
Set the POWER switch (Fig. 2 2) to ON.
2
Load Batteries (R03/LR03 x 2)
Press and slide the battery compartment lid on the re-
1
verse side to open it.
Slide in the direction of the arrow while pressing the mark.
Insert batteries.
2
Be sure to align the battery polarities ( ) correctly.
Close the battery compartment lid.
3
CAUTION!
● 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, immediately wash with copious amounts of
water, and consult your physician.
● Dead batteries should be removed
quickly and disposed of properly, either
by placing in a public battery collection
receptacle, or by returning to appropriate
authority.
● Do not attempt to recharge dry batteries.
Never mix new and used batteries, or
batteries of different types.
Batteries should last about one year
under normal use. If the remote control
unit’s operating range becomes appreciably reduced, replace the batteries and
press the ACL button with the tip of a
ballpoint pen or other small object.
Set the Current time
Press the TIME ADJUST button (Fig. 7 T).
1
Use the tip of a ball-point pen or other small object to press the button.
Use the SET TIME buttons (Fig. 6 M) to adjust
2
the clock to 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.)
Press the TIME ADJUST button again.
3
This completes the time setting and starts the clock.
To Use the Remote Control Unit
● The Remote Control Unit must be pointed at signal receiver (Fig. 1 4) to operate
correctly.
● Operating Range: About 7 meters.
● When a signal is properly received by the air conditioner, a beeping sound will
be heard.
● If no beep is heard, press the Remote Control Unit button again.
Remote Control Unit Holder
Insert
Press in
Screws
1 Mount the Holder. 2 Set the Remote Control
Unit.
Slide up
Pull out
3 To remove the Remote Control
Unit (when use at hand).
En-4
Page 7
OPERATION
To Select Mode Operation
Press the START/STOP button (Fig.6 Q).
1
The Indoor Unit’s OPERATION Indicator lamp (red) (Fig. 3 6) will light.
The air conditioner will start operating.
Press the MASTER CONTROL button (Fig.6 L) to se-
2
lect the desired mode.
Each time the button is pressed, the mode will change in the following
order.
About three seconds later, the entire display will reappear.
To Set the Thermostat
Press the SET TEMP. buttons (Fig. 6 M).
button: Press to raise the thermostat setting.
button: Press to lower the thermostat setting.
sss
AUTO COOL DRY
t
HEAT FAN
t
Example: When set to COOL.
● Thermostat setting range:
AUTO .................................. Standard temperature setting ± 2 °C
Heating ............................... 16 - 30 °C
Cooling/Dry ........................ 18 - 30 °C
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.
The thermostat setting should be considered a standard value, and may differ
somewhat from the actual room temperature.
To Set the Fan Speed
Press the FAN CONTROL button (Fig. 6 P).
Each time the button is pressed, the fan speed changes in the following order:
AUTO HIGH MED LOW QUIET
About three seconds later, the entire display will reappear.
When set to AUTO:
Heating : Fan operates so as to optimally circulate warmed air.
However, the fan will operate at very low speed when the temperature
of the air issued from the indoor unit is low.
Cooling : As the room temperature approaches that of the thermostat setting,
the fan speed becomes slower.
Fan : The fan alternately turns on and off; when on, the fan runs at the low
fan speed.
ssss
s
Example: When set to 26 °C.
Example: When set to AUTO.
The fan will operate at very low setting during Monitor operation and
at the start of the Heating mode.
When set to QUIET:
SUPER QUIET operation begins. The indoor unit’s airflow will be reduced for qui-
eter operation.
● SUPER QUIET operation cannot be used during Dry mode. (The same is true
when dry mode is selected during AUTO mode operation.)
● During Super Quiet operation, Heating and Cooling performance will be reduced
somewhat.
En-5
Page 8
To Stop Operation
Press the START/STOP button.
The OPERATION Indicator Lamp (red) (Fig. 3 6) will go out.
About Mode Operation
AUTO: ● Depending on the room temperature at the time operation begins, the
operating mode will be switched automatically as shown in the
accompanying table.
Also, depending on the operating mode, the room temperature setting
will cause the “standard” temperature to be set as shown.
Actual Room Operating Mode Thermostat Setting
Temperature (standard setting)
30°C or above Cooling 27°C
27°C-30°C Cooling 26°C
25°C-27°C Dry 24°C
22°C-25°C Monitor
Below 22°C Heating 23°C
The operating mode and standard thermostat settings are selected automatically when operation begins.
● When automatic operation is initiated, the fan will run at very low speed
for about one minute while the unit detects and selects the proper op-
erating mode.
● Once the operating mode has been set, the mode will not change even
if the room temperature changes.
However, during the monitor operation mode, if the room temperature
changes to below 22°C, the mode will automatically switch to Heat,
and when it rises above 25°C the mode will automatically switch to
Dry.
● When in the monitor mode, the fan will operate very slowly.
● If the START/STOP button is pressed to recommence operation within
two hours after stopping automatic operation, the unit will begin oper-
ating from the same mode as before.
Heating:
● Use to warm your room.
● 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 setting. 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 Defrosting operation, the OPERATION indica-
tor Lamp (red) will flash, and the heat operation will be interrupted.
Cooling:
Dry:
● Use to cool your room.
● 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.
During Heating mode:
Set the thermostat to a temperature setting 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.
During Cooling/Dry mode:
Set the thermostat to a temperature setting 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 operate).
During Fan mode:
You can not use the unit to heat and cool
your room.
En-6
Page 9
TIMER OPERATION
Before using the timer function, be sure that the Remote Control Unit is set to the correct current time (See page 4).
To Use the ON timer or OFF timer
Press the START/STOP button (Fig. 6 Q)
1
(if the unit is already operating, proceed to step 2).
The Indoor Unit’s OPERATION Indicator lamp (red) (Fig. 3 6) will light.
Press the TIMER button (Fig. 6 O) to select the OFF
2
timer or ON timer operation.
Each time the button is pressed the timer function changes in the following order:
ss
RESET OFF ON
PROGRAM (OFF → ON, OFF ← ON)
The indoor unit’s TIMER Indicator lamp (green) (Fig. 3 7) will light.
s
t
Use the SET TIME buttons (Fig. 6 M) to adjust the de-
3
sired OFF time or ON time.
Set the time while the time display is flashing (the flashing will continue
for about five seconds).
button: Press to advance the time.
button: Press to reverse the time.
About five seconds later, the entire display will reappear.
To Cancel the Timer
Use the TIMER button to select “TIMER
RESET”.
The air conditioner will return to normal
operation.
To Change the Timer Settings
Perform steps 2 and 3.
To Stop Air Conditioner Operation
while the Timer is Operating
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
the operating condition desired.
To Use the PROGRAM timer
Press the START/STOP button (Fig. 6 Q)
1
(if the unit is already operating, proceed to step 2).
The Indoor Unit’s OPERATION Indicator lamp (red) (Fig. 3 6) will light.
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
mode and times.
About three seconds later, the entire display will reappear.
The indoor unit’s TIMER Indicator lamp (green) (Fig. 3 7) will light.
Press the TIMER button (Fig. 6 O) to select the PRO-
3
GRAM timer operation (either OFF ON or OFF ON
will display).
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.)
About five seconds later, the entire display will reappear.
About the PROGRAM timer
● The PROGRAM timer allows you to integrate OFF timer and ON timer operations
in a single sequence. The sequence can involve one transition from OFF timer to
ON timer, or from ON timer to OFF timer, within a twenty-four hour period.
● The first timer function to operate will be the one set nearest to the current time.
The order of operation is indicated by the arrow in the Remote Control Unit’s
display (OFF → ON, or OFF ← ON).
● One example of PROGRAM timer use might be to have the air conditioner auto-
matically stop (OFF timer) after you go to sleep, then start (ON timer) automatically in the morning before you arise.
En-7
To Cancel the Timer
Use the TIMER button to select “TIMER
RESET.”
The air conditioner will return to normal
operation.
To Change the Timer Settings
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.
2. Press the TIMER button to select either
OFF ON or OFF ON.
To Stop Air Conditioner Operation
while the Timer is Operating
Press the START/STOP button.
To Change Operating Conditions
If you wish to change 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 the operating condition desired.
Page 10
SLEEP TIMER OPERATION
Unlike other timer functions, the SLEEP timer is used to set the length of time until air conditioner operation is stopped.
To Use the SLEEP timer
While the air conditioner is operating or stopped, press the
SLEEP button (Fig. 6 K).
The indoor unit’s OPERATION Indicator lamp (red) (Fig. 3 6) lights and the TIMER
Indicator lamp (green) (Fig. 3 7) light.
To Change the Timer Settings
Press the SLEEP button (Fig. 6 K) once again and set the time
using the SET TIME buttons (Fig. 6 M).
Set the time while the Timer Mode Display is flashing (the flashing will continue
about five seconds).
button: Press to advance the time.
button: Press to reverse the time.
About five seconds later, the entire display will reappear.
To Cancel the Timer:
Use the TIMER button to select “TIMER
RESET”.
The air conditioner will return to normal
operation.
To Stop the Air Conditioner During
Timer Operation:
Press the START/STOP button.
About the SLEEP timer
To prevent excessive warming 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:
When the SLEEP timer is set, the thermostat setting is
automatically lowered 1°C every thirty minutes. When the thermostat has been lowered a total of 4°C, 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
30
minutes
1 hour
1 hour
30 minutes
1°C
2°C
Set time
3°C
4°C
During Cooling/Dry operation:
When the SLEEP timer is set, the thermostat setting is automatically raised 1°C every sixty minutes. When the thermostat has been raised a total of 2°C, 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
1 hour
Set time
1°C
2°C
En-8
Page 11
ADJUSTING THE DIRECTION OF AIR CIRCULATION
Vertical (up-down) direction of airflow is adjusted by pressing the Remote Control Unit’s AIR FLOW DIRECTION button. Horizontal (right-left) airflow direction is adjusted manually, by moving the Air Flow Direction Louvers.
Whenever making horizontal airflow adjustments, start air conditioner operation and be sure that the vertical air direction
louvers are stopped.
Vertical Air Direction Adjustment
Press the AIR FLOW DIRECTION button (Fig. 6 R).
Each time the button is pressed, the air direction range will change as follows:
1
2 3 4 5 6
Types of Air flow Direction Setting:
1,2,3 : During Cooling/Dry Modes
4,5,6 : During Heating mode
1,2,3,4,5,6 : During Fan mode
The Remote Control Unit’s display does
not change.
● 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.
During Cooling/Dry mode : Horizontal flow 1
During Heating mode : Downward flow 6
During Fan mode : Horizontal flow 1
● During AUTO mode operation, for the first minute after beginning operation,
airflow will be horizontal 1; the air direction cannot be adjusted during this period.
DANGER!
● Never place fingers or foreign objects in-
side the outlet ports, since the internal fan
operates at high speed and could cause
personal injury.
● Always use the remote control unit’s
AIR FLOW DIRECTION button to adjust
the vertical airflow louvers. Attempting
to move them manually could result in
improper operation; in this case, stop
operation and restart. The louvers
should begin to operate properly again.
● During use of the Cooling and Dry
modes, do not set the Air Flow Direction Louvers in the Heating range (4-
6) for long periods of time, since water vapor may condense near the outlet louvers and drops of water may drip
from the air conditioner. During the
Cooling and Dry modes, if the Air Flow
Direction Louvers are left in the heating range for more than 30 minutes,
they will automatically return to position 3.
● When used in a room with infants, chil-
dren, elderly or sick persons, the air
direction and room temperature
should be considered carefully when
making settings.
Right-Left Adjustment
Adjust the Right-Left louvers.
● Move the Right-Left louvers to adjust air flow in the direction you prefer.
knobs (three places)
knob
En-9
Page 12
SWING OPERATION
Begin air conditioner operation before performing this procedure.
To select SWING Operation
Press the SWING LOUVER button (Fig. 6 S).
The SWING indicator lamp (orange) (Fig. 3 8) will light.
In this mode, the Air Flow Direction Louvers will swing automatically to direct the
airflow both up and down.
To Stop SWING Operation
Press the SWING LOUVER button (Fig. 6 S) once again.
The SWING indicator lamp (orange) (Fig. 3 8) will go out.
Airflow direction will return to the setting before swing was begun.
About Swing Operation
● The range of swing is relative to the currently set airflow
direction.
● If the swing range is not as desired, use the Remote Con-
trol Unit’s AIR FLOW DIRECTION button to change the
range of swing.
● During Cooling/Dry modes, if SWING Operation in con-
tinued at the lowest (downward) range for more than 30
minutes, the unit will automatically switch the swing range
to the horizontal flow range, to prevent the condensation
of moisture on the outlet.
● The SWING Operation may stop temporarily when the
air conditioner’s fan is not operating, or when operating
at very low speeds.
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 (Fig. 2 3) on the main unit
control panel.
To stop operation, press the MANUAL AUTO button once again, or set the POWER
switch (Fig. 2 2) to OFF.
(Controls are located inside the Intake Grille)
● 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 Remote Control Unit (see page 6).
● The fan speed selected will be “AUTO”
and the thermostat setting will be
standard.
En-10
Page 13
CLEANING AND CARE
CAUTION!
● Before cleaning the air conditioner, be sure to turn it off and disconnect the Power Supply Cord.
● Be sure the Intake Grille (Fig. 1 9) is installed securely.
● Take care to prevent the intake grille from falling whenever opening, closing, or removing it.
● When removing and replacing the air filters, be sure not to touch the heat exchanger, as per-
sonal injury may result.
Cleaning the Intake Grille
1. Remove the Intake Grille.
1 Place your fingers at both lower ends of the grille
panel, and lift forward; if the Intake Grille seems to
catch partway through its movement, continue lifting
upward to remove.
2 Lift up the Intake Grille fully to remove.
Intake Grille
Cleaning the Air Filter
1. Open the Intake Grille, and remove the Air
Filter.
Lift up the air filter’s handle, disconnect the two lower
tabs, and pull out.
Air filter handle
Hooks (two places)
2. Remove dust with a vacuum cleaner or by
washing.
After washing, allow to dry thoroughly in a shaded place.
2. Clean with water.
Remove dust with a vacuum cleaner; wipe the unit with
warm water, then dry with a clean, soft cloth.
3. Replace the Intake Grille.
1 Holding the Intake Grille horizontally, fasten the two
upper hooks on the unit.
Intake Grille
2 Press the Intake Grille down at the lower sides to close.
(Located at the positions indicated by three arrows.)
3. Replace the Air Filter and close the Intake
Grille.
1 Align the sides of the Air Filter with the panel, and
push in fully, making sure the two lower tabs are returned properly to their holes in the panel.
Hooks (two places)
2 Close the Intake Grille.
(For purposes of example, the illustration shows the unit
without Intake Grille installed.)
● Dust can be cleaned from the Air Filter either with a
vacuum cleaner, or by washing the filter in a solution of
mild detergent and warm water. If you wash the filter, be
sure to allow it to dry thoroughly in a shady place before
reinstalling.
● If dirt is allowed to accumulate on the Air Filter, air flow
will be reduced, lowering operating efficiency and increasing noise.
● During periods of normal use, the Air Filters should be
cleaned every two weeks.
When using the optional Air Cleaning Filter
● Install the optional Air Cleaning Filter set (APS-03B) as instructed (installation instructions are furnished with the Air Clean-
ing Filter set).
● 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 40°C, harsh abrasive cleansers, or volatile agents like ben-
zene or thinner.
● Do not expose the unit body to liquid insecticides or hairsprays.
● When shutting down the unit for one month or more, first allow the fan mode to operate continuously for about one-half
day to allow internal parts to dry thoroughly.
En-11
Page 14
TROUBLESHOOTING
WARNING!
Before requesting service, perform the following checks:
NORMAL
FUNCTIONS
Doesn’t operate immediately:
Noise is heard:
In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect the
Power Supply Plug, 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 disconnect the Power Supply Plug or turn off your circuit breaker to
ensure that power is completely off.
Symptom
● 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 Supply Plug is disconnected and then reconnected to a power outlet, the protection circuit will operate for
about 3 minutes, preventing unit operation during that period.
● 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 sizzling sound may be heard occasional.
This sound is produced by the Automatic Defrosting operation.
Problem
See Page
—
—
14
Smells:
Mist or steam are
emitted:
Airflow is weak or stops.
● Some smell may be emitted from the indoor unit. This smell is
the result of room smells (furniture, tobacco, etc.) which have
been taken into the air conditioner.
● 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.
● 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 lamp will flash.
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Water is produced from
the outdoor unit.
● The fan may operate at very low speed during Dry operation or
when the unit is monitoring the room’s temperature.
● During SUPER QUIET operation, the fan will operate at very low
speed.
● In the monitor AUTO operation, the fan will operate at very low
speed.
● During Heating operation, water may be produced from the out-
door unit due to Automatic Defrosting operation.
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Page 15
TROUBLESHOOTING
CHECK ONCE
MORE
Symptom
Doesn’t operate at all:
Poor Cooling (or Heating)
performance:
The unit operates
differently from the remote
control unit’s setting:
Items to Check
● Is the Power Supply Plug disconnected its outlet?
● Has there been a power failure?
● Has a fuse blown out, or a circuit breaker been tripped?
● Is the POWER switch set to the OFF position?
● Is the timer operating?
● Is the air filter dirty?
● Are 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?
● Is the unit set for SUPER QUIET operation?
● Are the Remote Control Unit’s batteries dead?
● Are the Remote Control Unit’s batteries loaded properly?
See Page
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4
7-8
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5
4
If the problem persists after performing these checks, or if you notice burning smells, or the TIMER Indicator lamp (Fig. 3 7)
flashes, immediately stop operation, disconnect the Power Supply Plug (Fig. 1 D), and consult authorized service personnel.
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Page 16
OPERATING TIPS
Operation and Performance
Heating Performance
● 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 insufficient heating performance is being produced, we recommend you use this air conditioner in conjunction with
another kind of heating appliance.
● 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 conditioner until the room is heated.
In Event of Power Interruption
AUTO Restart
● The air conditioner power has been interrupted by a
power failure. The air conditioner will then restart automatically in its previous mode when the power is restored.
● Operated by setting before the power failure. Then, the
Air Flow Direction Louvers will automatically change to
their standard direction.
Microcomputer-controlled Automatic Defrosting
● 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 performance.
In order to prevent this kind of reduced performance, this
unit is equipped with a Microcomputer-controlled Automatic Defrosting function. If frost forms, the air conditioner will temporarily stop, and the defrosting circuit will
operate briefly (for about 7-15 minutes).
During Automatic Defrosting operation, the OPERATION
Indicator Lamp (red) will flash.
●
If a power failure occurs during TIMER operation, the timer
will be reset and the unit will begin (or stop) operation at the
new time setting. In the event that this (kind of timer fault
occurs the TIMER Indicator Lamp (green) will flash (see Page.
3) ).
● 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 Plug, reconnect it, and then
use the Remote Control Unit to resume operation.
Temperature and Humidity Range
Cooling Mode
Outdoor temperature
Indoor temperature
Indoor humidity
If the unit is used for long periods
under high-humidity conditions,
condensation may form on the surface of the indoor unit, and drip
onto the floor or other objects underneath.
● If the air conditioner is used under higher temperature conditioner 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 temperature than those listed above, the heat-exchanger may freeze, leading to water leakage and other damage.
● Do not use this unit for any purposes other than the Cooling, Heating, and Dehumidifying, and air-circulation of rooms in
ordinary dwellings.
About 21-43°C
About 18-32°C
About 80% or less
If the unit is used for long periods
under high-humidity conditions,
condensation may form on the surface of the indoor unit, and drip
onto the floor or other objects underneath.
Dry Mode
About 21-43°C
About 18-32°C
Heating Mode
About –5-24°C
About 30°C or less
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