OPERATING MANUAL

AIR CONDITIONER

CASSETTE TYPE

AUT Series

KEEP THIS MANUAL

FOR FUTURE REFERENCE

FUJITSU GENERAL LIMITED P/N9374379200

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 CONTENTS
SAFETY PRECAUTIONS ....................................... 1 MANUAL AUTO OPERATION ............................... 9
NAME OF PARTS ................................................... 2 SELF-DIAGNOSIS .................................................. 9
PREPARATORY OPERATION ................................. 3 ADJUSTING THE DIRECTION OF
OPERATION ........................................................... 3 AIR CIRCULATION ............................................... 10
TIMER FUNCTIONS ............................................... 5 SWING OPERATION ............................................ 10
ON/OFF TIMER ...................................................... 5 CLEANING AND CARE ........................................ 11
WEEKLY TIMER ..................................................... 6 TROUBLESHOOTING .......................................... 12
TEMPERATURE SET BACK TIMER ....................... 8 OPERATING TIPS ................................................. 13
FILTER LAMP RESET ............................................. 9 TEMPERATURE AND HUMIDITY RANGE .......... 15

SAFETY PRECAUTIONS
● Before using the appliance, read these “SAFETY PRECAUTIONS” thoroughly and operate in the correct way.
● The instructions in this section all relate to safety; be sure to maintain safe 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! 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
WARNING! death or serious injury of the user.
This mark indicates procedures which, if improperly performed, might possibly result
CAUTION! 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.
● Take care not to damage the power supply cord.
● 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
changing 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 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 units, take precautions to prevent access by
infants.
● Do not use inflammable gases near the air conditioner.
1

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 NAME OF PARTS

2 4 9

1 Air Filter (In Air Intake Grille)

2 Air Flow Direction Flaps
1 3 Air Intake Grille
4 Indicator Lamps
5 FILTER Lamp (orange)
3 6 TIMER Indicator Lamp (green)
7 OPERATION Indicator Lamp (red)
4
5 6 7 8 8 Remote Control Signal Receiver
9 Operating Control Panel
0 MANUAL AUTO Button

Remote controller I
H
G

F J
K
E
2 1
6 3
7 4
8 C
9 B
5
0
A D

1 Start/Stop Button C Horizontal Airflow Direction

2 Set Temperature Button and Swing Button
3 Master Control Button D Filter Button
4 Fan Control Button E Operation Lamp
5 Economy Button F Timer and Clock Display
6 Timer Mode (CLOCK ADJUST) G Operation Mode Display
Button H Fan Speed Display
7 DAY (DAY OFF) Button I Operation Lock Display
8 SET BACK Button J Temperature Display
9 Set Time Button K Function Display
0 DELETE Button Defrost Display
A SET Button Thermo Sensor Display
B Vertical Airflow Direction and Economy Display
Swing Button Vertical Swing Display
Horizontal Swing Display
Filter Display

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 PREPARATORY OPERATION
Set the current day and time

1 2 Press the DAY button and select the current day.

A appears around the selected day.

Press the timer mode (CLOCK SU MO TU WE TH FR SA

ADJUST) button for 2 seconds
or more. The time display on
the remote controller will flash.

Press the set time buttons to set the current time.

3 Press repeatedly to adjust the current time in

1-minute increments. Press and hold to adjust the
current time in 10-minute increments.

SU MO TU WE TH FR SA

ex. Monday PM11:00

4 SET BACK Press the SET BACK button to switch between the
12- and 24-hour time displays.

SU MO TU WE TH FR SA SU MO TU WE TH FR SA

5
Press again to end.

OPERATION
Instructions relating to heating are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).

To start/stop operation

Press the start/stop button.

Operation lamp
Air conditioner ON: Lit brightly
Air conditioner OFF: Not lit

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 To set the operation mode
● Operation mode setting
Press the master control button to set the operation mode.
If DRY is selected, the fan speed will be set to AUTO.

AUTO COOL DRY FAN HEAT

● Room temperature setting

Press the set temperature buttons to set the room temperature.

Temperature setting range

AUTO ............................................... 18 to 30 °C
COOL/DRY ....................................... 18 to 30 °C
HEAT ................................................ 16 to 30 °C
Lower Rise

● Fan speed setting

Press the fan control button to set the fan speed.

AUTO HIGH MED LOW QUIET

ECONOMY OPERATION

Press the ECONOMY button to start or stop ECONOMY OPERA-

TION.
For details on the function, refer to page 10.

Room temperature sensor selection

Indoor unit

Press the ECONOMY button for more than 2 seconds to

select whether the room temperature is detected at the in-
door unit (remote sensor) or the remote controller.

When the thermo sensor display appears, the room

temperature is detected at the remote controller.

NOTES
• This function is locked at the factory. In order to detect the room temperature correctly, consult authorized service
personnel when using this function.
• If this function is locked, the location where the room temperature is detected cannot be changed and the
mark flashes when the ECONOMY button is pushed for 2 seconds or more.

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 OPERATION
Child lock function

Press the DAY (DAY OFF) button and SET button simulta-
neously for 2 seconds or more to activate the child lock
function and lock all buttons on the remote controller.
Press the buttons again for 2 seconds or more to deacti-
vate the child lock function.
When the child lock function is activated, the mark
appears. If any button is pressed during the child lock,
the CL display and flash.

TIMER FUNCTIONS
OFF timer (See page 5.)
Use this timer function to stop air conditioner operation. The timer operates and air conditioner operation stops
after the set time has passed. The timer can be set up to 24 hours in advance.

ON timer (See page 5.)

Use this timer function to start air conditioner operation. The timer operates and air condition operation starts
after the set time has passed. The timer can be set up to 24 hours in advance.

WEEKLY timer (See page 6.)

Use this timer function to set operating times for each day of the week.
Use the DAY OFF setting to switch off timed operation for a selected day in the coming week.
Because all days can be set together, the weekly timer can be used to repeat the timer settings for all of the days.

Temperature SET BACK timer (See page 8.)

Use this timer function to change the set temperature in the operation times set for each day of the week.
This can be used together with other timer settings.

ON/OFF TIMER
To set the ON/OFF timer

1 2
SU MO TU WE TH FR SA

Press the timer mode button to se-

lect the ON timer or OFF timer.

From 1 to 24 hours ex. OFF timer set for 6 hours

No display
Press the set time buttons to set the time.
NON OFF ON WEEKLY After the time is set, the timer will start automatically.
STOP TIMER TIMER TIMER The amount of time until the OFF timer operates that is dis-
played on the timer display decreases as time passes.

● To cancel
• Press the DELETE button to cancel the timer mode.
• The timer mode can also be canceled by changing the timer mode using the timer mode button.

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 WEEKLY TIMER
Weekly timer setting

1 SU MO TU WE TH FR SA 2
3 6 9 12 15 18 21

Press the SET button for 2

Press the timer mode button to select the weekly timer.
seconds or more.

● Day of the week setting

3 ALL SU MO TU WE TH FR SA

1 2
SU MO TU WE TH FR SA

Press the DAY button to select the day of the week, and then press the
SET button to confirm the setting.
For ALL, all of the days can be set together when a appears around 3 6 9 12 15 18 21

each day.

● Time setting
4 When the operating time is set, the
mark appears.

1 2 3 SU MO TU WE TH FR SA

ON-1 OFF-1 ON-2 OFF-2

3 6 9 12 15 18 21

ex. The timer is set for 7:00-18:00.

Press the set time buttons to set the time, and then press the SET button
to confirm the setting and proceed to the next ON or OFF time setting.
Up to two ON and OFF times can be set per day.
Press the DAY button to complete the time setting and return to the day
of the week setting.

● To delete the operating time

5 If the DELETE button is pressed during
steps 3 4or , the operating time for the
selected day will be deleted.
If all the days are selected, the operating
times for all of the days will be deleted.

3
Repeat steps and . 4
To complete the weekly timer settings, press the SET
button for 2 seconds or more.

NOTES
• The operating time can be set in 30-minute increments only.
• The OFF time can be carried over to the next day.
• The ON timer and the OFF timer functions cannot be set using the weekly timer. Both an ON and OFF time must be set.

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 WEEKLY TIMER
WEEKLY timer operation
● To start ● To cancel
SU MO TU WE TH FR SA

3 6 9 12 15 18 21

When the weekly timer is selected, the • Press the DELETE button to cancel
timer starts automatically. 3 6 9 12 15 18 21 the timer mode.
ex. Operating time 7:00-18:00 • The timer mode can also be
canceled by changing the timer
The operating time for the current mode using the timer mode button.
day is displayed.

To set the DAY OFF (for a holiday)

1 2 3 4
During the weekly timer, Select the day to set the DAY Press the DAY (DAY OFF) Press the SET button for 2
press the SET button for 2 OFF. button for 2 seconds or seconds or more to com-
seconds or more to set the more to set the DAY OFF. plete the DAY OFF setting.
day.

SU MO TU WE TH FR SA SU MO TU WE TH FR SA
The mark flashes under a day of the week.

● To cancel
3 6 9 12 15 18 21 3 6 9 12 15 18 21 Follow the same procedures as
those for setup.
ex. The DAY OFF is set for Monday.

NOTES
• The DAY OFF setting is only available for days for which weekly settings already exist.
• If the operating time carries over to the next day (during a next day setting), the effective DAY OFF range will be set as
shown below.

● Normal ● Next day setting

DAY OFF DAY OFF

ON OFF ON OFF ON OFF ON OFF

WEEKLY WEEKLY WEEKLY WEEKLY
Preceding day Setting day Next day Preceding day Setting day Next day
• The DAY OFF setting can only be set one time. The DAY OFF setting is cancelled automatically after the set day has
passed.

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 TEMPERATURE SET BACK TIMER
Temperature SET BACK timer setting

SET BACK
1 2
SU MO TU WE TH FR SA
If there is no existing
SET BACK tempera-
ture setting, “- -” will
3 6 9 12 15 18 21 be displayed for the
temperature.
Press the SET BACK button to change to the SET BACK con- Press the SET button for 2
firmation display. seconds or more.
The SET BACK operating time and the set temperature will
be displayed.

● Day setting ● Operating time setting

3 SU MO TU WE TH FR SA

3 6 9 12 15 18 21

1 2 3 4 ex. When setting all days together

Follow the same procedures to set the operating time as those for the weekly timer. The DELETE button is also used
as described in the procedures for the weekly timer.

● Temperature setting Press the set temperature buttons to set

4 the temperature. (The temperature setting
range is the same as the range for the
operation mode.)
5
SU MO TU WE TH FR SA

3 6 9 12 15 18 21

ex. Operating time 15:00–22:00 Repeat steps and . 3 4

Press the SET button for 2
seconds or more to complete
ON 28°C OFF the temperature SET BACK
SET BACK temperature
timer settings.
24°C 24°C
Normal temperature

Temperature SET BACK timer operation

● To start ● To cancel
SET BACK SU MO TU WE TH FR SA

1 2

ex. Display during SET BACK timer operation

Press the SET BACK button, and then
(The operating time will not be displayed.)
press the DELETE button while the
SET BACK confirmation display is dis-
Press the SET BACK button. The SET BACK confirmation display appears played. Even if the SET BACK button
for 5 seconds, and then the timer starts automatically. is pressed again, the SET BACK timer
will be cancelled.

NOTES
• The SET BACK timer only changes the set temperature, it cannot be used to start or stop air conditioner operation.
• The SET BACK timer can be set to operate up to two times per day but only one temperature setting can be used.
• The SET BACK timer can be used together with the ON, OFF, and weekly timer functions.
• The SET BACK operating time is displayed only in the SET BACK confirmation display. (Refer to step 1 for the SET BACK
confirmation display.)
8

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 FILTER LAMP RESET
Some indoor unit models are equipped with a filter lamp in the indoor unit display to indicate when it is time to clean the air
filters.

Press the Filter button for 2 seconds or more. The indoor unit filter lamp will go off and the filter display will disappear.

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 CAUTION!

Do not press the MANUAL AUTO button with
Press the MANUAL AUTO button on the main unit operating wet hands or pointed objects, otherwise an
electric shock or malfunction may occur.
control panel.
To stop operation, open the air intake grille, press the MANUAL AUTO button once ● When the air conditioner is operated
again. 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.
However, about Multi-type air condi-
tioner the Heat pump model will fol-
low the operating mode of the other
indoor unit.
● The fan speed selected will be “AUTO”
and the thermostat setting will be
24 °C.

SELF-DIAGNOSIS
When “EE” in Temperature Display is displayed, inspection of the air conditioning system is necessary. Please consult
authorized service personnel.
Unit number (usually 0)
Error code
SU MO TU WE TH FR SA

ex. Self-diagnosis check

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 ADJUSTING THE DIRECTION OF AIR CIRCULATION
Instructions relating to heating are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
Start air conditioner operation before performing this procedure.

To set the operation mode

● Vertical air direction adjustment
* Press the START/STOP button to start the air conditioner, and then pro-
ceed as follows.
Press the VERTICAL AIRFLOW DIRECTION and SWING button to adjust
the direction of the vertical airflow.

Each time the button is pressed, the air direction range will change as follows:

1 2 3 4

The remote control unit’s display does not change.

● Attempting to move up/down air di-
rection flaps manually could result
in improper operation; in this case,
Recommended Air Flow Direction Setting: stop operation and restart. The
1, 2, 3, 4: During Cooling/Dry mode louvers should begin to operate
1
2, 3, 4: During Heating mode properly again.
2
3 ● When used in a room with infants,
4 children, elderly or sick persons, the
air direction and room temperature
should be considered carefully when
making settings.

● 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 4
● 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.

SWING OPERATION
Begin air conditioner operation before performing this procedure.

To select/stop swing operation

Press the VERTICAL AIRFLOW DIRECTION and SWING button for more
than 2 seconds. (Stop the setting by pressing for more than 2 seconds
again.)

About Swing Operation

The type of operation Range of swing ● The SWING operation may stop temporarily when the air
conditioner’s fan is not operating, or when operating at
Cooling/Heating/Dry/Fan 1 to 4
very low speeds.

10

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 CLEANING AND CARE
● Before cleaning the unit, be sure to stop the unit and disconnect the power supply.
CAUTION! ● Turn off the electrical breaker.
● A fan operates at high speed inside the unit, and personal injury could result.
● Be careful not to drop the intake grille.

● 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
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.

Cleaning the Air Filter

When the filter lamp flashes, remove and ● When reinstalling the filter, be sure that the hooks at A
and B engage correctly into place.
clean the filter.
B
1. Push the intake grille pushbuttons (two
places).

2. Open the intake grille.

4. 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.
● Dust can be cleaned from the air filter either with a
vacuum cleaner, or by washing the filter in a solution of
OPEN mild detergent and warm water. If you wash the filter, be
PUSH
sure to allow it to dry thoroughly in a shady place before
3. Hold down the hook at A and pull the fil- reinstalling.
ter out. ● If dirt is allowed to accumulate on the air filter, air flow
will be reduced, lowering operating efficiency and in-
creasing noise.
● After turning the power on, press the filter button on the
remote control to turn off the filter lamp. (Refer to the
operation manual packed with remote control unit for
details.)

Filter

B
A
Intake grille

11

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 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-
WARNING! 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.

Before requesting service, perform the following checks:

Symptom Problem See page

NORMAL Doesn’t operate imme- ● If the unit is stopped and then immediately started again, the com-
FUNCTION diately: pressor will not operate for about 3 minutes, in order to prevent
fuse blowouts. —
● Whenever the electrical breaker is turned off then on again, the
protection 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 sizzling sound may be heard occa-

sionally. This sound is produced by the Automatic Defrosting 13
operation.

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 ● During Cooling or Dry operation, a thin mist may be seen emitted
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 the Auto- 13
matic Defrosting operation.

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 to a higher setting.

*● During Heating operation, the unit will temporarily stop

operation (between 7 and 15 minutes) as the Automatic 13
Defrosting mode operates. During the Automatic Defrosting
operation, the OPERATION indicator lamp will flash.

● The fan may operate at very low speed during Dry operation or —
when the unit is monitoring the room’s temperature.

● During QUIET operation, the fan will operate at very low speed. —

● In the monitor AUTO operation, the fan will operate at very low —
speed.

Water is produced from *● During Heating operation, water may be produced from the out- 13
the outdoor unit: door unit due to the Automatic Defrosting operation.

The FILTER lamp blinks: ● Clean the filter. Afterwards, turn the FILTER lamp off. See the
operating manual that came with your remote control unit for the 9
method for turning off the FILTER lamp.

thermo sensor ● The room temperature sensor may be malfunctioning. Please

display on the remote consult authorized service personnel. —
controller is flashing:

12

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 TROUBLESHOOTING
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).

Symptom Items to check See page

CHECK ONCE Doesn’t operate at all: ● Has the circuit breaker been turned off?
MORE ● Has there been a power failure? —
● Has a fuse blown out, or a circuit breaker been tripped?

● Is the timer operating? 5 to 7

Poor Cooling (or *Heating) ● Is the air filter dirty?

performance: ● 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 QUIET operation? —

If the problem persists after performing these checks, or if you notice burning smells, or the TIMER indicator lamp and opera-
tion indicator lamp 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).

*Heating Performance *Microcomputer-controlled Automatic

Defrosting
● This air conditioner operates on the heat-pump principle,
absorbing heat from outdoor air and transferring that heat ● When using the Heating mode under conditions of low
indoors. As a result, the operating performance is reduced outdoor temperature and high humidity, frost may form
as outdoor air temperature drops. If you feel that insuffi- on the outdoor unit, resulting in reduced operating per-
cient heating performance is being produced, we recom- formance.
mend you use this air conditioner in conjunction with
another kind of heating appliance. In order to prevent this kind of reduced performance, this
unit is equipped with a Microcomputer-controlled Auto-
● Heat-pump air conditioners heat your entire room by matic Defrosting function. If frost forms, the air condi-
recirculating air throughout the room, with the result that tioner will temporarily stop, and the defrosting circuit will
some time may be required after first starting the air con- operate briefly (for about 4 to 15 minutes).
ditioner until the room is heated.
During Automatic Defrosting operation, the OPERATION
indicator lamp (red) will flash.
*When Indoor and Outdoor Tempera-
ture are High Low Ambient Cooling
● When both indoor and outdoor temperatures are high ● When the outdoor temperature drops, the outdoor unit’s
during use of the heating mode, the outdoor unit’s fan fans may switch to Low Speed, or one of the fans may
may stop at times. stop intermittently.

Fan speed: AUTO *Hot start (for heating)

Heating: The fan will operate at very low speed when the The indoor unit prevents cold drafts when heating opera-
temperature of the air issued from the indoor unit tion begins.
is low. The indoor unit fan will not operate or it will operate at a
Cooling: As the room temperature approaches that of the very low speed until the heat exchanger reaches the set tem-
set temperature, the fan speed becomes slower. perature.
Fan: The fan runs at the low fan speed.

13

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 Mode operation: AUTO

COOLING MODEL
● When the room temperature is 2 °C higher than the set ● During the Drying mode operation, the FAN setting should
temperature, the mode will switch between Cooling and be switched to LOW for a gently cooling effect during
Drying. which the fan may temporarily stop rotating.

HEAT & COOL MODEL (Reverse Cycle)

Auto changeover function
● When AUTO CHANGEOVER is selected, the air conditioner ● When the room temperature is near the thermostat set-
selects the appropriate operation mode (Cooling or Heat- ting, the air conditioner will begin monitor operation. In
ing) according to your room’s present temperature. the monitor operation mode, the fan will operate at a very
● When AUTO CHANGEOVER is first selected, the fan will low speed. If the room temperature subsequently
operate at a very low speed for about 1 minute while the changes, the air conditioner will once again select the
unit determines the current conditions of the room and appropriate operation (Heating or Cooling) to adjust the
selects the proper operation mode. temperature to the value set in the thermostat. (The moni-
tor operation range is ±2 °C relative to the thermostat
If the difference between thermostat setting and actual
setting.)
room temperature is more than +2 °C
→ Cooling or dry operation
(Monitor operation may be selected if the outdoor
temperature is low.)
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
(Monitor operation may be selected if the outdoor
temperature is high.)

About Mode Operation

Heating: ● Use to warm your room.
During Heating mode:
● When Heating mode is selected, the air conditioner will operate at very Set the thermostat to a temperature set-
low fan speed for about 3 to 5 minutes, after which it will switch to the ting that is higher than the current room
selected fan setting. This period of time is provided to allow the indoor temperature. The Heating mode will not
unit to warm up before beginning full operation. operate if the thermostat is set lower than
● When the room temperature is very low, frost may form on the outside the actual room temperature.
unit, and its performance may be reduced. In order to remove such During Cooling/Dry mode:
frost, the unit will automatically enter the defrost cycle from time to Set the thermostat to a temperature set-
time. During Automatic Defrosting operation, the OPERATION indica- ting that is lower than the current room
tor Lamp will flash, and the heat operation will be interrupted. temperature. The Cooling and Dry modes
● After the start of heating operation, it takes sometime before the room will not operate if the thermostat is set
gets warmer. higher than the actual room temperature
Cooling: ● Use to cool your room. (in Cooling mode, the fan alone will ope-
rate).
Dry: ● Use for gently cooling while dehumidifying your room.
During Fan mode:
● You cannot heat the room during Dry mode.
You can not use the unit to heat and cool
● During Dry mode, the unit will operate at low speed; in order to adjust your room.
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.

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 OPERATING TIPS
AUTO Restart

In Event of Power Interruption

● Should the power supply to the air conditioner be inter- ● Use of other electrical appliances (electric shaver, etc.) or
rupted by a power failure, the air conditioner will restart nearby use of a wireless radio transmitter may cause the
automatically in the previously selected mode once the air conditioner to malfunction. In this event, temporarily
power is restored. disconnect the power supply, reconnect it, and then use
● Should a power failure occur during TIMER operation, the remote control unit to resume 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 lamp (green) will flash (see page 2).

Notice

Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
*● During use of the heating mode, the outdoor unit will *● During use of the heating mode, the top of the indoor
occasionally commence the defrost operation for brief unit may become warm, but this is due to the fact that
periods. During the defrosting operation, if the user sets coolant is circulated through the indoor unit even when
the indoor unit for heating again, the defrosting mode it is stopped; it is not a malfunction.
will continue, and the heating operation will begin after
completion of defrosting, with the result that some time
may be required before warm air is emitted.

TEMPERATURE AND HUMIDITY RANGE

Permissible ranges of temperature and humidity are as follows:

Cooling/Dry Outdoor temperature About –15 °C to 46 °C

Operation Indoor temperature About 18 °C to 32 °C
Indoor humidity Below approximately 80%.
If the air conditioner is used continuously for many hours,
water may condense on the surface and drip.
Heating Outdoor temperature About –15 °C to 24 °C
Indoor temperature About below 30 °C

If the unit is used under higher temperature conditions than those noted here, the automatic protection circuit may
operate, interrupting the operation.
If the unit is used under lower temperature conditions than those noted here, the heat exchanger may freeze, causing water
leakage or other malfunction.
● Do not use the air conditioner for any purpose other than room cooling/dry, room heating or fan.

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