Fujitsu AST13PSA-W User manual

OPERATING MANUAL
HEAT & COOL MODEL
(REVERSE CYCLE)
ROOM AIR CONDITIONER
WALL MOUNTED TYPE
Indoor Unit
AST13PSA–W
Outdoor Unit
AOT13PNA

– 56 –
CONTENTS
SAFETY PRECAUTIONS
SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . 56
NAME OF PARTS . . . . . . . . . . . . . . . . . . . . . . . 57
FEATURES AND FUNCTIONS . . . . . . . . . . . . . 57
PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . 60
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
TIMER OPERATION . . . . . . . . . . . . . . . . . . . . . . 63
SLEEP TIMER OPERATION . . . . . . . . . . . . . . . 64
ADJUSTING THE DIRECTION OF
AIR CIRCULATION . . . . . . . . . . . . . . . . . . . . . . . 65
SWING OPERATION . . . . . . . . . . . . . . . . . . . . . 66
MANUAL AUTO OPRATION . . . . . . . . . . . . . . . 66
CLEANING AND CARE . . . . . . . . . . . . . . . . . . . 67
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . 69
OPERATING TIPS . . . . . . . . . . . . . . . . . . . . . . . 70
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 71
WARNING! • If the power supply code of this air conditioner is damaged, it must be replaced
by the manufacturer or its authorized service personnel only in order to avoid a
safety hazard.
DANGER! • Do not attempt to install this air conditioner by yourself.
• This unit contains no user-serviceable parts. Always consult authorized service
personnel for repairs.
• When moving, consult authorized service personnel for disconnection and instal-
lation of the unit.
• Do not become excessively chilled by staying for lengthy period 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 sup-
ply 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,
turn off the circuit breaker, and consult authorized service personnel.
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, pre-
cision equipment, or art works.
• Connection values 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 meter away from either the
indoor 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.

– 57 –
NAME OF PARTS
Fig. 1 Indoor Unit
eRemote Control Signal Receiver
uSWING Indicator Lamp (orange)
iIntake Grille (Fig. 4)
oAir Filter
!0 Air Flow Direction Louver
!1 Right-Left Louvers
(behind Air Flow Direction Louver)
!2 Drain Hose
!3 Power Supply Plug
!4 Power Supply Cord
!5 Air Cleaning Filter (optional)
qOperating Control Panel (Fig. 2)
wMANUAL AUTO button
rIndicator lamps (Fig. 3)
tOPERATION Indicator Lamp (red)
yTIMER 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 70 Auto Restart).
Fig. 6 Remote Control Unit
@0 SLEEP button
@1 MASTER CONTROL button
@2 SET TEMP. / SET TIME button ( / )
@3 Signal Transmitter
@4 TIMER button
@5 FAN CONTROL button
@6 START / STOP button
@7 AIR FLOW DIRECTION button
@8 SWING LOUVER button
Rear side (Fig. 7)
@9 TIME ADJUST button
#0 ACL button
(located inside battery compartment)
#1 TEST RUN button
• This button is used when installing the unit,
and should not be used under normal condi-
tions, as it will cause the air conditioner’s
thermostat function to operate incorrectly.
• If this button is pressed during normal opera-
tion, 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, press the
START / STOP button to stop the air condi-
tioner.
Fig. 5 Outdoor Unit
!6 Intake Port
!7 Outlet Port
!8 Pipe Unit
!9 Drain port (bottom)
#2
Remote Control Unit Display (Fig. 8)
#3 Transmit Indicator
#4 Clock Display
#5 Operating Mode Display
#6 Timer Mode Display
#7 Fan Speed Display
#8 Temperature Set Display
#9 Timer Set Indicator
$0 Temperature Set Indicator

– 58 –
MANUAL
AUTO
OPERATION
TIMER
SWING
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 1
r
t
y
u
!3
!4
!2
e
q
w
!8
!6
!0
o
!0
!0
!5
!7
i
Fig. 6
Fig. 5
Fig. 1
Fig. 4
Fig. 3
Fig. 2
Fig. 7
Fig. 8

– 59 –
FEATURES AND FUNCTIONS
INVERTER
At the start of operation, a large power is used to
bring the room quickly to the desired temperature.
Afterwards, the unit automatically switches to a low
power setting for economic and comfortable opera-
tion.
AUTO CHANGEROVER
The operation mode (cooling, dry, and heating) is
switched automatically to maintain the set tempera-
ture, and the temperature is kept constant at all
times.
SLEEP TIMER
When the SLEEP timer button is pressed during
heating mode, the air conditioner’s thermostat set-
ting is gradually lowered during the period of opera-
tion; 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
The Air Flow Direction Louvers swings automatically
up and down so that the air speeds to every nock
and corner of your room.
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-03D)
uses an electrostatic principle to clean the air of fine
particulate matter such as tobacco smoke and plant
pollen.

To Use the Remote Control Unit
• The Remote Control Unit must be pointed at signal
receiver (Fig. 1 e) 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
– 60 –
PREPARATION
Turn on the power
Connect the Power Supply Plug (Fig. 1 !3) to an
electrical outlet; in the case of a direct line connec-
tion, turn on the circuit breaker.
Load Batteries (R03 / LR03 x 2)
Press and slide the battery compart-
ment lid on the reverse side to open it.
Slide in the direction of the arrow while pressing
the mark.
Insert batteries.
Be sure to align the battery polarities
( / ) correctly.
Close the battery compartment lid.
Set the Current Time
Press the TIME ADJUST button (Fig. 7 @9)
Use the tip of a ball-point pen or other small
object to press the button.
Use the / SET TEMP. SET TIME
buttons (Fig. 6 @2) to adjust 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 steps; hold
the buttons depressed to change the time quickly
in ten-minute steps).
Press the TIME ADJUST button again.
This completes the time setting and starts the
clock.
1
1
2
3
2
3
Screws
qMount the
Holder. wSet the Remote Control Unit. eTo remove the Remote Control Unit
(when use at hand).
Insert Slide up
Pull out
Press in
• 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 leakage 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 pub-
lic 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 batter-
ies and press the ACL button with the tip of a ball-
point pen or other small object.

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 approached that of the ther-
mostat setting, the fan speed becomes slower.
Fan :
The fan alternately turns on and off; when on, the
fan runs at the low fan speed.
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 air-
flow will be reduced for quieter 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.
Example :
When set to COOL
To Set the Fan Speed
Press the FAN CONTROL button (Fig. 6 @5).
Each time the button is pressed, the fan speed
changes in the following order.
– 61 –
OPERATION
To Select Mode Operation
Press the START / STOP button (Fig. 6 @6).
The Indoor Unit’s OPERATION Indicator Lamp
(red) (Fig. 3 t) will light.
The air conditioner will start operation.
Press the MASTER CONTROL button
(Fig. 6 @1) to select 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 reap-
pear.
1
2
AUTO COOL DRY
HEAT FAN
AUTO HIGH MED
QUIET LOW
To Set Thermostat
Press the SET TEMP. SET TIME button
(Fig. 6 @2).
button :
Press to raise the thermostat setting.
button : Press to lower the thermostat setting.
• Thermostat setting range:
AUTO . . . . . . . . . . 18 to 30 °C
Heating . . . . . . . .
16 to 30 °C
Cooling/Dry . . . . .
18 to 30 °C
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.
In order to increase the drying effect during quiet
cooling operation, the fan of the indoor unit may
stop.
Example :
When set to COOL
Example :
When set to 26 °C

– 62 –
OPERATION
To Stop Operation
Press the START/STOP button.
The OPERATION indicator lamp (red) (Fig. 3
t) will go out.
About AUTO CHANGEOVER Operation
AUTO :
• When AUTO CHANGEOVER operation first
selected, the fan will operate at very low speed
for about one minute, during which time the unit
detects the room conditions and selects the prop-
er operating mode.
If the difference between thermostat setting and
actual room temperature is more than +2°C
Cooling or dry operation
When the outside temperature is lower than
10°C, cooling or dry mode operation is not per-
formed. Monitor operation
If the difference between thermostat setting and
actual room temperature is within ±2°C
Monitor operation
If the difference between thermostat setting and
actual room temperature is more than –2°C
Heating operation
When the outside temperature is higher than 20°C,
heating operation is not performed. Monitor
operation
• When the air conditioner has adjusted your
room's temperature to near the thermostat set-
ting, it will begin monitor operation. In the moni-
tor 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,
Cooling) to adjust the temperature to the value
set in the thermostat.
(The monitor operation range is ±2°C relative to
the thermostat setting.)
• If the mode automatically selected by the unit is
not what you wish, select one of the mode opera-
tion (HEAT, COOL, DRY, FAN).
About Mode Operation
Heating :
• Use to warm your room.
• When Heating mode is selected, the air condi-
tioner 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 provid-
ed 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 perfor-
mance 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 indicator
Lamp (red) will flash, and the heat operation will
be interrupted.
Cooling :
• Use to cool your room.
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 adjusting 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 ther-
mostat is set higher than the actual room tempera-
ture (in Cooling mode, the fan alone will operate).
During Fan mode :
You can not use the unit to heat and cool your
room.

– 63 –
• To Change the Timer Setting
Perform steps 2 and 3.
• To Stop Air Conditioner Operation while the
Timer is Operating
Press the START/STOP button.
Use the SET TEMP.SET TIME button (Fig. 6 @2 )
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).
button : Press to advance the time.
button : Press to reverse the time.
About five seconds later, the entire display will
reappear.
• 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.
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 automatically stop (OFF timer) after you go to
sleep, then start (ON timer) automatically in the morning
before you arise.
TIMER OPERATION
To Use the ON timer or OFF timer
Press the START/STOP button (Fig. 6 @6 ).
(if the unit is already operating, proceed to step 2).
The indoor unit's OPERATION Indicator Lamp
(red) (Fig 3. t) lights and the TIMER Indicator
Lamp (green) (Fig 3. y) light.
• To Cancel the Timer
Use the TIMER button to select “TIMER RESET.”
The air conditioner will return to normal operation.
Press the TIMER button (Fig. 6 @4) to select
the OFF timer or ON timer operation.
Each time the button is pressed the timer func-
tion changes in the following order :
The indoor unit's TIMER Indicator lamp (green)
(Fig. 3 y) will light.
1
2
3
RESET OFF ON
PROGRAM (OFF ON, OFF ON)
Before using the timer function, be sure that the
Remote Control Unit is set to the correct current time
(See Page 60).
To Use the Program timer
Press the START/STOP button (Fig. 6 @6 ).
(if the unit is already operating, proceed to
step 2).
The indoor unit's OPERATION Indicator Lamp
(red) (Fig. 3 t) will light.
• To Cancel the Timer
Use the TIMER button to select “TIMER RESET.”
The air conditioner will return to normal operation.
Set the desired times for OFF timer and
ON timer.
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 y) will light.
• To Change the Timer Setting
1.Follow the instructions given in the section “To
Use the ON Timer or OFF Timer” to select the
timer setting you wish to change.
2.Press the TIMER button to select either OFF
ON or OFF ON.
Press the TIMER button (Fig. 6 @4) to select
the PROGRAM 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 oper-
ate first, the unit will stop operating at this
point).
About five seconds later, the entire display will
reappear.
• 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.
1
2
3

– 64 –
About the SLEEP Timer
To prevent excessive warming or cooling during
sleep, the SLEEP timer function automatically modi-
fies 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 OPERATION
To Use the SLEEP Timer
While the air conditioner is operating or
stopped, press the SLEEP button (Fig. 6 t).
The indoor unit's OPERATION Indicator Lamp (red)
(Fig.3 t) will light.
• To Cancel the Timer
Use the TIMER button to select “TIMER RESET.”
The air conditioner will return to normal operation.
To Change the Timer Setting
Press the SLEEP button (Fig 6. @0) once
again and set the time using the SET TIME
buttons (Fig 6. @2).
Set the time while the Timer Mode Display is flash-
ing (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 Stop the Air Conditioner During Timer
Operation:
Press the START/STOP button.
Unlike other timer functions, the SLEEP timer is
used to set the length of time until air conditioner
operation is stopped.
• SLEEP timer setting
• SLEEP timer setting
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 thermo-
stat setting at that time is maintained until the set time
has elapsed, at which time the air conditioner automati-
cally turns off.

– 65 –
ADJUSTING THE DIRECTION OF AIR CIRCULATION
Vertical Air Direction Adjustment
Press the AIR FLOW DIRECTION button
(Fig.6 @7).
Each time the button is pressed, the air direction
range will change as follows:
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.
qwe
Cooling/
Dry mode
Heating
mode
Fan mode
rty u
ewq u
yt r
• 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 opera-
tion selected.
During Cooling/Dry mode : Horizontal flow q
During Heating mode : Downward flow y
• During Auto Changeover operation, the position
of the air flow direction louvers will change auto-
matically in accordance with the selected mode.
• If you wish to select a different airflow direction,
you may use the remote control unit's AIR FLOW
DIRECTION button to choose a different setting.
• When the temperature of the air being blown out
is low at the start of heating operation or during
defrosting, the airflow direction temporarily
becomes uto prevent cold air being blown onto
the body.
• When the AIR FLOW DIRECTION button of the
remote control unit is pressed, some time is
required until the airflow direction louvers reach
the desired position.
During this time, adjustment of the airflow direction
is not possible even when the AIR FLOW
DIRECTION button is pressed.
•
During Monitor operation in AUTO CHANGEOVER
mode, the airflow direction automatically becomes
q, and it can not be adjusted.
• 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.
• When used in a room with infants, children,
elderly or sick persons, the air direction and room
temperature should be considered carefully
when making settings.
• Always use the remote control unit's AIR
FLOW DIRECTION button to adjust the vertical
airflow louvers. Attempting to move them man-
ually could result in improper operation; in this
case, stop operation and restart. The louvers
should begin to operate properly again.
• When used in a room with infants, children,
elderly or sick persons, the air direction and
room temperature should be considered care-
fully 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.
• Never place fingers or foreign objects inside the
outlet ports, since the internal fan operates at
high speed and could cause personal injury.
Right-Left Louvers
Knob

– 66 –
SWING OPERATION
To Select SWING Operation
Press the SWING LOUVER button (Fig. 6
@8).
The SWING Indicator Lamp (orange) (Fig. 3 u) 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 @8)
once again.
The SWING Indicator Lamp (orange) (Fig. 3 u) will
go out.
Airflow direction will return to the setting before
swing was begun.
How to Use the Main Unit Controls
Press the MANUAL AUTO button (Fig. 2 w)
on the main unit control panel.
To stop operation, press the MANUAL AUTO button
once again.
(Controls are located inside the Intake Grille)
Begin air conditioner operation before performing
this procedure.
MANUAL AUTO OPERATION
Use the MANUAL AUTO operation in the event the
Remote Control Unit is lost or otherwise unavailable.
• The SWING operation may stop temporarily
when the air conditioner's fan is not operating or
when operating at very low speeds.
• The airflow direction can not be adjusted during
SWING operation even when the AIR FLOW
DIRECTION button is pressed.
About Swing Operation
• The SWING range is as follows :
Cooling/Dry mode
Heating mode
• When the air conditioner is operated with the
controls on the Main Unit, it will operate under
the same mode as the AUTO CHANGEOVER
mode selected on the Remote Control Unit
(see page 64).
• During MANUAL AUTO operation, the thermo-
stat is automatically set at a standard tempera-
ture setting (= 24°C).
• The fan speed selected will be “AUTO”, and the
airflow direction will be the standard direction
(cooling: q, heating: y).

2
1
2
1
– 67 –
• Before cleaning the air conditioner, be sure to
turn it off and disconnect the Power Supply Cord.
• Be sure the Intake Grille (Fig. 4 i) is installed
securely.
• When removing and replacing the air filters, be
sure not to touch the heat exchanger, as person-
al injury may result.
Do not operate with open Intake Grille, as this can
cause accidents.
CLEANING AND CARE
Cleaning the Intake Grille
Open the Intake Grille.
qPlace your fingers at both lower ends of the
grille panel, and lift forward; if the grille
seems to catch partway through its move-
ment, continue lifting upward to remove.
wPull past the intermediate catch and open
the Intake Grille wide so that it becomes
horizontal.
Intake Grille
Intake Grille
Knob
Mounting shaft
Intake Grille
Knob
Mounting shaft
Intake Grille
Knob
Bearing
Mounting
shaft
Intake Grille
1
Unlock the Intake Grille.
Hold the Intake Grille with one hand and pull the
Knobs on the right and the left all the way to
unlock the Intake Grille.
Raise the horizontal Intake Grille to remove it.
2
Clean with water.
Remove dust with a vacuum cleaner : wipe the
unit with warm water, then dry with a clean, soft
cloth.
3
Set the mounting shaft of the Intake
Grille into the bearings at the top of the
panel.
qPull the Knobs all the way.
wHold the grille horizontal and set the left and
right mounting shafts into the bearings at
the top of the panel.
4
Lock the Intake Grille.
Hold the Intake Grille with one hand and push
the Knobs on the right and the left all the way in
to lock the Intake Grille mounting shafts.
5
Close the Intake Grille.
Push the lower edge of the Intake Grille at both
ends and at the center to close it.
6

– 68 –
CLEANING AND CARE
Cleaning the Air Filter
Open the Intake Grille, and remove the
air Filter.
Lift up the air filter's handle, disconnect the two
lower tabs and pull out.
1When using the optional Air Cleaning
Filter
• Install the optional Air Cleaning Filter set (APS-
03D) as instructed (Instruction Manual are fur-
nished with the Air Cleaning Filter set).
Hooks (two place)
Air filter handle
Remove dust with a vacuum cleaner or
by washing.
After washing, allow to dry thoroughly in a shad-
ed place.
Replace the Air Filter and close the
Intake Grille.
qAlign 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.
2
Hooks (two place)
wClose the Intake Grille.
(For purposes of example, the illustration shows
the unit without Intake Grille installed.)
• Dust can 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 thorough-
ly in a shady place before reinstalling.
• If dirt is allowed to accumulate on the Air Filter,
air flow will be reduced, lowering operating effi-
ciency and increasing noise.
• During periods of normal use, the Air Filters
should be cleaned every two weeks.
• When used for extended periods, the unit may
accumulate dirt inside, reducing its perfor-
mance. We recommend that the unit be
inspected regularly, in addition to your own
cleaning and care. For more information, con-
sult authorized service personnel.
• When cleaning the unit's body, do not use
water hotter than 40°C, harsh abrasive
cleansers, or volatile agents like benzene or
thinner.
• Do not expose the unit body to liquid insecti-
cides or hairsprays.
• When shutting down the unit for one month or
more, first allow the fan mode to operate con-
tinuously for about onehalf day to allow internal
parts to dry thoroughly.

– 69 –
TROUBLESHOOTING
In the event of a malfunction (burning smell, etc.), immediately stop operation, immediately stop operation, dis-
connect 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.
Before requesting service, perform the following checks :
Symptom Problem See Page
NORMAL
FUNCTIONS Doesn’t operate immediately :
• If the unit is stopped and then immediately started again,
the compressor 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 dur-
ing 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.
Smells :
• 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.
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 condition-
er, resulting in condensation and misting.
Airflow is weak or stops :
• When Heating operation is started, fan speed is temporarily
very low, to allow internal parts to warm up.
Water is produced from the
outdoor unit :
• During Heating operation, water may be produced from the
outdoor unit due to Automatic Defrosting operation.
The outdoor unit does not
stop even when heating oper-
ation is stopped :
• When there is frost on the outdoor unite when heating oper-
ation is stopped, defrosting will be performed automatically.
At this time, OPERATION Indicator Lamp will flash, and
operation will stop after the outdoor unit has run for several
minutes.
• During Heating operation, a sizzling sound may be heard
occasional. This sound is produced by the Automatic
Defrosting operation.
• 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.
• During Heating operation, the unit will temporarily stop
operation (between 7and 15 minutes) as the Automatic
Defrosting mode operates. During Automatic Defrosting
operation, the OPERATION indicator lamp will flash.
• The fan may operate at very low speed during Dry opera-
tion 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.
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70
70
70
70
61
61
61

– 70 –
Symptom Problem See Page
CHECK
ONCE MORE Doesn’t operate at all :
• Is the Power Supply Plug disconnected from its outlet?
• Has there been a power failure?
• Has a fuse blown out, or a circuit breaker been tripped?
Poor Cooling (or Heating)
performance :
• Is the air filter dirty?
• Are the air conditioner’s intake grille or outlet port blocked?
• Did you adjust the room temperature settings (thermostat)
correctly?
• Is there a window or door open?
• In the case of Cooling operation, is a window allowing
bright sunlight to enter? (Close the curtains.)
• In the case of Cooling operation, are there heating appara-
tus and computers inside the room, or are there too many
people in the room?
The unit operates differently
from the remote control unit’s
setting :
• Are the Remote Control Unit’s batteries dead?
• Are the Remote control Unit’s batteries loaded properly?
• Is the timer operating?
• Is the POWER switch set to the OFF position?
• Is the unit set for SUPER QUIET operation?
TROUBLESHOOTING
If the problem persists after performing these checks, or if you notice burning smells, or the TIMER Indicator
Lamp (Fig. 3, y) flashes, immediately stop operation, disconnect the Power Supply Plug (Fig. 1 !3) and consult
authorized service personnel.
About the SLEEP Timer
• 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 rec-
ommend you use this air conditioner in conjunc-
tion 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.
Microcomputer-controlled Automatic Defrosting
• When using the Heating mode under conditions
of low outdoor air temperature and high humidity,
frost may form on the outdoor unit, resulting in
reduced operating performance.
In order to prevent this kind of reduced perfor-
mance, 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 to 15 minutes).
During Automatic Defrosting operation, the
OPERATION indicator lamp (red) will flash.
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 settings before the power failure.
Then, the Air Flow Direction Louvers will auto-
matically change to their standard direction.
•
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 59).
• Use of other electrical appliances (electric
shaver, etc.) or nearby use of a wireless radio
transmitter may cause the air conditioner to mal-
function. In this event, temporarily disconnect the
Power Supply Plug, reconnect it, and then use
the Remote Control Unit to resume operation.
OPERATING TIPS
Cleaning the Air Filter
60
60
61
63 – 64
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– 71 –
OPERATING TIPS
Temperature and Humidity Range
SPECIFICATION
MODEL INDOOR UNIT OUTDOOR UNIT
AST13PSA-W AOT13PNA
TYPE HEAT&COOL MODEL (REVERSE CYCLE) INVERTER
POWER 230V to 50Hz
COOLING
CAPACITY 3.7 (Minimum 1.03 to Maximum 4.0) kW
INPUT POWER 1.48 (Minimum 0.35 to Maximum 1.82) kW
CURRENT 6.5 (Maximum 8) A
HEATING
CAPACITY 4.85 (Minimum 0.8 to Maximum 6.1) kW
INPUT POWER 1.61 (Minimum 0.33 to Maximum 2.28) kW
CURRENT 7.1 (Maximum 10) A
MAX. PRESSURE
SUCTION 800kPa
DISCHARGE 2700kPa
REFRIGERANT R22 950g
DIMENSIONS & WEIGHT
INDOOR UNIT
Height/Width/Depth 280/815/179 mm
Weight 9kg (NET)
OUTDOOR UNIT
Height/Width/Depth 535/695/250 mm
Weight 34kg (NET)
DB : DRY Bulb Temperature Cooling and Dry Heating
Indoor Outdoor Indoor Outdoor
WB : Wet Bulb Temperature DB WB DB WB DB WB DB WB
Maximum Temperature 32 23 43 26 30 –– 24 18
Minimum Temperature 18 13 10 –– 2 –– – 5 – 6
• 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 build-in protection cir-
cuit 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 purpose other than the Cooling, Heating, and Dehumidifying, and air-circulation of
rooms in ordinary dwellings.
• The specifications listed in the above table were measured under the following conditions.
• Temperatures
• Position of the AIRFLOW DIRECTION flap
For ADJUSTING THE DIRECTION OF AIR CIRCULATION on Page 9, use position wfor COOLING and
position rfor HEATING.
COOLING HEATING
DB WB DB WB
Indoor Temp. 27 19 20 15
Outdoor Temp. 35 24 7 6
[°C ]
[°C ]

MEMO

03M12H0004-2554 March 2000 Printed in Japan