AIR CONDITIONER
Duct Type
Indoor Unit
ARTG36LH
ARTG45LH
ARTG54LH
ARTG60LH
PART NO. 9374379583
KEEP THIS MANUAL FOR FUTURE REFERENCE
OPERATING MANUAL
2
CONTENTS
SAFETY PRECAUTIONS ........................................ 2
FEATURES AND FUNCTIONS ............................... 3
NAME OF PARTS ................................................... 4
PREPARATORY OPERATION ................................ 5
OPERATION ........................................................... 6
TIMER FUNCTIONS ............................................... 8
ON/OFF TIMER ....................................................... 8
WEEKLY TIMER ...................................................... 9
SAFETY PRECAUTIONS
l Do not attempt to install this air conditioner by yourself.
l This unit contains no user-serviceable parts. Always consult authorized service personnel
for repairs.
l When moving, consult authorized service personnel for disconnection and installation of
the air conditioner.
l Do not become excessively chilled by staying for many hours in the direct cooling airflow.
l Do not insert ngers or objects into the outlet port or intake grilles.
l
Do not start and stop air conditioner operation by turning off the electrical breaker and so on
.
l In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the
electrical breaker, and consult authorized service personnel.
l In the event of refrigerant leakage , be sure to keep away from re or any flammables.
(consult authorized service personnel)
l Provide occasional ventilation during use.
l Do not direct air flow at replaces or heating apparatus.
l Do not climb on, or place objects on, the air conditioner.
l Do not hang objects from the indoor unit.
l Do not set flower vases or water containers on top of air conditioners.
l Do not expose the air conditioner directly to water.
l Do not operate the air conditioner with a wet hand. An electric shock may result.
l Do not touch the switches with sharp objects.
l Turn off power source when not using the unit for extended periods.
l Always turn off the electrical breaker whenever cleaning the air conditioner or changing the
air lter.
l Connection valves become hot during Heating; handle with care.
l Check the condition of the installation stand for damage.
l Do not place animals or plants in the direct path of the air flow.
l When restarting after a long period of disuse in the winter, turn the power switch on at least
12 hours before starting the unit.
l Do not drink the water drained from the air conditioner.
l Do not use the air conditioner for other purposes. In order to avoid any quality deterioration,
do not use the unit for cooling precision instruments, food, planets, animals or works of
art.
l Do not apply any heavy pressure to radiator ns.
l Operate only with air lters installed.
l Do not block or cover the intake grille and outlet port.
l Ensure that any electronic equipment is at least 1m away from either the indoor or outdoor
units.
l Avoid installing the air conditioner near a replace or other heating apparatus.
l When installing the indoor and outdoor units, take precautions to prevent access by in-
fants.
l Do not use inflammable gases near the air conditioner.
l Before using the appliance, read these “SAFETY PRECAUTIONS” thoroughly and operate in the correct way.
l The instructions in this section all relate to safety; be sure to maintain safe operating conditions.
l “DANGER”, “WARNING” and “CAUTION” have the following meanings in these instructions:
TEMPERATURE SET BACK TIMER ......................11
ECONOMY OPERATION ...................................... 12
CLEANING AND CARE ......................................... 12
TROUBLESHOOTING .......................................... 13
OPERATING TIPS ................................................. 14
SELF-DIAGNOSIS ................................................ 16
TEMPERATURE AND HUMIDITY RANGE ........... 16
DANGER
This mark indicates procedures which, if improperly performed, are most likely to result
in the death of or serious injury to the user or service personnel.
WARNING
This mark indicates procedures which, if improperly performed, might lead to the death
or serious injury of the user or service personnel.
CAUTION
This mark indicates procedures which, if improperly performed, might possibly result in
personal harm to the user, or damage to property.
DANGER
CAUTION
3
lThis appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not play with the appliance.
lIf you see lightning or hear thunder, there might be a lightning strike. To prevent electric
shock hazard, turn off the air conditioner by using the remote controller, and do not touch
the unit or the power plug during thunderstorm.
lDo not place any other electrical products or household belongings under indoor unit or
outdoor unit. Dripping condensation from the unit might get them wet, and may cause
damage or malfunction of your property.
lKeep clean and tidy around the outdoor unit, and do not place the things around it. If it is
covered with fallen leaves, there could be an infiltration of small animals or insects whose
contact with the internal electrical components leads to the product malfunction.
lDo not stand on unstable steps when operating or cleaning the air conditioner. It may overturn
and can cause the injury.
CAUTION
SAFETY PRECAUTIONS
FEATURES AND FUNCTIONS
n
Energy saving and Comfortable function
n
Remote controller
WIRED REMOTE CONTROLLER
The wired remote controller allows convenient control of indoor
unit operation.
WIRELESS REMOTE CONTROLLER (OPTION)
The optional wireless remote controller can be used. When
you use remote controller, there are following different points
as compared with using wired remote controller.
[The additional function for wireless ones]
• SLEEP timer
• TIMER
• 10 °C HEAT operation
And you can use both wireless and wired remote controller
simultaneously. (But function is limited.)
[The restricted functions for wired ones]
• Weekly timer
• Temperature set back timer
WEEKLY TIMER
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
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.
n
Convenient function
INVERTER
At the start of operation, large amount of 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 operation.
ECONOMY OPERATION
When ECONOMY operation mode is operated, the room temperature will be little higher than the set-temp under cooling
mode and lower than set-temp under heating mode. Therefore,
the ECONOMY mode is able to save more energy than other
normal mode.
AUTO CHANGEOVER
The operation mode (cooling, dry, heating) is switched automatically to maintain the set temperature, and the temperature
is kept constant at all times.
4
NAME OF PARTS
Remote controller
START/STOP button
SET TEMP. (temperature) button
MODE button
FAN button
ECONOMY button
TIMER MODE (CLOCK ADJUST) button
DAY (DAY OFF) button
SET BACK button
SET TIME ( < > ) button
TIMER DELETE button
TIMER SET button
Vertical airflow direction and
Swing button
*1
Horizontal airflow direction
and Swing button
*2
MAINTENANCE(FILTER RESET) button
#1
Operation lamp
Timer and Clock indicator
Operation mode indicator
Fan speed indicator
Operation lock indicator
Temperature indicator
Function indicator
Defrost indicator
Thermo sensor indicator
ECONOMY indicator
Vertical swing indicator
*3
Filter indicator
#1
*
1~3 These functions cannot be used.
(Please also see the operating manual
of the option when using it with options,
etc.)
#
1 Can be used if set correctly during
installation. Please consult authorized
service personnel when using this
function.
5
PREPARATORY OPERATION
Press the TIMER MODE (CLOCK
ADJUST) button for 2 seconds or
more. The time indicator on the
remote controller will ash.
2
SU MO TU WE TH FR SA
Press the DAY button and select the current day.
A
appears around the selected day.
Press the SET TIME (< >) buttons to set the current time.
Press repeatedly to adjust the current time in 1-minute incre-
ments. Press and hold to adjust the current time in 10-minute
increments.
ex. Monday 23:00
Press again to end.
SUMOTUWETH FR
SA
1
3
5
Press the SET BACK button to switch between the
12- and 24-hour time displays.
3
4
SUMOTUWETH FR
SA
SUMOTUWETH FR
SA
SET BACK
Set the current day and time
6
OPERATION
AUTO COOL DRY HEAT*FAN
AU TO MEDHIGH LOW
Temperature setting range
AUTO ............................................... 18 to 30 °C
COOL/DRY ...................................... 18 to 30 °C
HEAT
*
.............................................. 16 to 30 °C
Lower Rise
Operation lamp
Air conditioner ON: Lit brightly
Air conditioner OFF: Not lit
Press the START/STOP button.
Press the MODE button to set the operation mode.
If DRY is selected, the fan speed will be set to AUTO.
Press the SET TEMP. buttons to set the room temperature.
Press the FAN button to set the fan speed.
Press the ECONOMY button to start or stop ECONOMY operation.
For details on the function, refer to page 12.
To start/stop operation
To set the operation mode
l
Operation mode setting
l
Room temperature setting
l
Fan speed setting
ECONOMY operation
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
7
Press the ECONOMY button for more than 2 seconds to select
whether the room temperature is detected at the indoor unit or
the remote controller.
When the
thermo sensor indicator appears, the room
temperature is detected at the remote controller.
NOTES
l If this function is locked, the location where the room temperature is detected cannot be changed and the mark ashes
when the ECONOMY button is pushed for 2 seconds or more.
Indoor unit
Room temperature sensor selection
OPERATION
Child lock function
Press the DAY (DAY OFF) button and TIMER SET button
simultaneously for 2 seconds or more to activate the child lock
function and lock all of the buttons on the remote controller
except the START/STOP button, SET TEMP. buttons, MODE
button, and FAN button. Press the buttons again for 2 seconds
or more to deactivate 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
indicator ashes.
l
This function is locked at the factory. In order to detect the room temperature correctly, consult authorized serv-
ice personnel when using this function.
8
To set the ON/OFF timer
TIMER FUNCTIONS
ON/OFF TIMER
Press the TIMER MODE button to
select the ON timer or OFF timer.
2
• Press the TIMER DELETE button to cancel the timer mode.
•
The timer mode can also be canceled by changing the timer mode using the TIMER MODE button
.
1
NON
STOP
OFF
TIMER
ON
TIMER
WEEKLY
TIMER
No indicator
SUMOTUWETH FR
SA
Press the SET TIME (< >) buttons to set the time.
After the time is set, the timer will start automatically.
The amount of time until the OFF timer operates that is displayed
on the timer indicator decreases as time passes.
From 1 to 24 hours
ex. OFF timer set for 6 hours
l
To cancel
OFF timer (See page 8.)
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 8.)
Use this timer function to start air conditioner operation. The timer operates and air conditioner operation starts after the
set time has passed. The timer can be set up to 24 hours in advance.
WEEKLY timer (See page 9.)
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 11.)
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.
9
WEEKLY TIMER
Press the TIMER MODE button to select the weekly timer.
2
Press the TIMER SET button for
2 seconds or more.
1
3
lDay of the week setting
Press the DAY button to select the day of the week, and then press the TIMER
SET button to conrm the setting.
For ALL, all of the days can be set together when a appears around
each day.
ALL SU MO TU WE TH FR SA
4
lTime setting
Press the SET TIME (< >) buttons to set the time, and then press the TIMER SET
button to conrm the setting and proceed to the next ON or OFF time setting.
Up to 2 times 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.
5
Repeat steps 3 and 4.
To complete the weekly timer settings, press the TIMER
SET button for 2 seconds or more.
lTo delete the operating time
If the TIMER DELETE button is pressed dur-
ing steps
3 or 4, 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.
NOTES
l The operating time can be set in 30-minute increments only.
l The OFF time can be carried over to the next day.
l The ON timer and the OFF timer functions cannot be set using the weekly timer. Both an ON and OFF time must be set.
ON-1 OFF-1 ON-2 OFF-2
ex. The timer is set for 7:00-18:00.
1
2
1
2
3
Weekly timer setting
When the operating time is set,
the
mark appears.
10
SUMOTUWETH FR
SA
369
12 15 18 21
SUMOTUWETH FR
SA
369
12 15 18 21
WEEKLY TIMER
l
To start
When the weekly timer is selected, the
timer starts automatically.
The operating time for the current
day is displayed.
l
To cancel
l
Press the TIMER DELETE button to
cancel the timer mode.
l
The timer mode can also be
canceled by changing the timer
mode using the TIMER MODE
button.
1
During the weekly timer, press
the TIMER SET button for
2 seconds or more to set the
day.
Select the day to set the DAY
OFF.
Press the DAY (DAY OFF)
button for 2 seconds or more
to set the DAY OFF.
Press the TIMER SET button
for 2 seconds or more to complete the DAY OFF setting.
2 43
l
To cancel
Follow the same procedures as those
for setup.
ex. The DAY OFF is set for Monday.
NOTES
l
The DAY OFF setting is only available for days for which weekly settings already exist.
l
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.
l
Normal
l
Next day setting
Setting dayPreceding day Next day Setting dayPreceding day Next day
l
The DAY OFF setting can only be set 1 time. The DAY OFF setting is cancelled automatically after the set day has passed.
The
mark ashes under a day of the week.
ON OFF ON OFF
DAY OFF
WEEKLY WEEKLY
WEEKLY
WEEKLY
ON
OFF ON OFF
DAY OFF
ex. Operating time 7:00-18:00
WEEKLY timer operation
To set the DAY OFF (for a holiday)
11
TEMPERATURE SET BACK TIMER
Press the SET BACK button to change to the SET BACK con-
rmation display.
The SET BACK operating time and the set temperature will be
displayed.
2
Press the TIMER SET button
for 2 seconds or more.
1
3
l
Day setting
l
Operating time setting
Follow the same procedures to set the operating time as those for the weekly timer. The TIMER DELETE button is also used
as described in the procedures for the weekly timer.
4
NOTES
l
The SET BACK timer only changes the set temperature, it cannot be used to start or stop air conditioner operation.
l
The SET BACK timer can be set to operate up to 2 times per day but only 1 temperature setting can be used.
l
The SET BACK timer can be used together with the ON, OFF, and weekly timer functions.
l
The SET BACK operating time is displayed only in the SET BACK conrmation display. (Refer to step 1 for the SET BACK
conrmation display.)
SET BACK
ex. When setting all days together
l
Temperature setting
Press the SET TEMP. buttons to set the
temperature. (The temperature setting range
is the same as the range for the operation
mode.)
ex. Operating time 15:00–22:00
5
Repeat steps 3 and 4.
Press the TIMER SET button for
2 seconds or more to complete
the temperature SET BACK timer
settings.
SET BACK temperature
Normal temperature
l
To start
SET BACK
Press the SET BACK button. The SET BACK conrmation display appears for
5 seconds, and then the timer starts automatically.
ex. Display during SET BACK timer operation
(The operating time will not be displayed.)
l
To cancel
Press the SET BACK button, and then
press the TIMER DELETE button while
the SET BACK conrmation display is
displayed. Even if the SET BACK button
is pressed again, the SET BACK timer
will be cancelled.
If there is no existing
SET BACK temperature setting, “- -” will
be displayed for the
temperature.
1
3
2
4
1
2
Temperature SET BACK timer setting
Temperature SET BACK timer operation
ON
24°C
28°C
24°C
OFF
12
CLEANING AND CARE
Cleaning the Air Filter
l
Before cleaning the unit, be sure to stop the unit and disconnect the power supply.
l
Turn off the electrical breaker.
l
A fan operates at high speed inside the unit, and personal injury could result.
l
When used for extended periods, the unit may accumulate dust 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.
l
When cleaning the unit’s body, do not use water hotter than 40°C, harsh abrasive cleansers, or volatile agents like benzene or
thinner.
l
Do not expose the unit body to liquid insecticides or hairsprays.
l
If the unit will not be operated for a period of 1 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.
l
Remove the dust from the air lters by vacuuming or washing them. After washing, allow the air lters to dry thoroughly
in an area protected from sunlight.
l
Dust can be cleaned from the air lter either with a vacuum cleaner, or by washing the lter in a solution of mild deter-
gent and warm water. If you wash the lter, be sure to allow it to dry thoroughly in a shady place before reinstalling.
l
If dust is allowed to accumulate on the air lter, air flow will be reduced, lowering operating efciency and increasing
noise.
CAUTION
ECONOMY OPERATION
Begin air conditioner operation before performing this procedure.
To Use the ECONOMY Operation
Press the ECONOMY button.
The ECONOMY indicator will light.
ECONOMY operation begins.
To Stop the ECONOMY Operation
Press the ECONOMY button again.
The ECONOMY indicator will go out.
Normal operation begins.
About ECONOMY Operation
At the maximum output, ECONOMY operation is approximately 70% of normal air conditioner operation for cooling and heating.
l
If the room is not cooled (or heated) well during ECONOMY operation, select normal operation.
l
During the monitor period in the AUTO mode, the air conditioner operation will not change to ECONOMY operation even if
ECONOMY operation is selected by pressing the ECONOMY operation button.
l
When ECONOMY operation mode is operated, the room temperature will be little higher than the set-temp under cooling mode
and lower than set-temp under heating mode. Therefore, the ECONOMY mode is able to save more energy than other normal
mode.
l
Can be used if set correctly during installation. Please consult authorized service personnel when using this
function.
l
It lights on when it is time to clean the air lters.
After turning the power on.
Press the MAINTENANCE button for
2 seconds or more on the remote control.
The lter indicator will disappear.
Filter Indicator Reset (Special setting)
13
TROUBLESHOOTING
Symptom Problem
See
Page
NORMAL
FUNCTION
Does not operate immediately:
l
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.
l
Whenever the electrical breaker is turned off then on again, the protec-
tion circuit will operate for about 3 minutes, preventing unit operation
during that period.
—
Noise is heard:
l
During operation and immediately after stopping the unit, the sound of
water owing 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 owing)
.
—
*
l
During heating operation, a sizzling sound may be heard occasionally.
This sound is produced by the automatic defrosting operation.
14
Smells:
l
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:
l
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.
—
*
l
During heating operation, the outdoor unit’s fan may stop, and steam
may be seen rising from the unit. This is due to the automatic defrosting
operation.
14
Airow is weak or stops:
*
l
When heating operation is started, fan speed is temporarily very low, to
allow internal parts to warm up.
*
l
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.
—
*
l
During heating operation, the unit will temporarily stop operation (between 4 and 15 minutes) as the automatic defrosting mode operates.
During the automatic defrosting operation,
will be shown on the
remote controller display.
14
l
The fan may operate at very low speed during dry operation or when
the unit is monitoring the room’s temperature.
—
l
In the monitor AUTO operation, the fan will operate at very low speed.
—
Water is produced from
the outdoor unit:
*
l
During heating operation, water may be produced from the outdoor unit
due to the automatic defrosting operation.
14
The FILTER indicator
blinks:
l
Clean the lter. Afterwards, turn the FILTER indicator off.
12
thermo sensor
display on the remote
controller is ashing:
l
The room temperature sensor may be malfunctioning. Please consult
authorized service personnel.
—
CHECK ONCE
MORE
Does not operate at all:
l
Has the circuit breaker been turned off?
l
Has there been a power failure?
l
Has a fuse blown out, or a circuit breaker been tripped?
—
l
Is the timer operating? 8 to 11
Poor cooling (or Heating*)
performance:
l
Is the air lter dusty?
l
Are the air conditioner’s intake grille or outlet port blocked?
l
Did you adjust the room temperature settings (thermostat) correctly?
l
Is there a window or door open?
l
In the case of cooling operation, is a window allowing bright sunlight
to enter? (Close the curtains.)
l
In the case of cooling operation, are there heating apparatus and
computers inside the room, or are there too many people in the room?
If the problem persists after performing these checks, or if you notice burning smells, stop operation immediately, turn off electric
breaker, and consult with authorized service personnel.
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
WARNING
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the electrical
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:
14
Heating Performance*
l 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 insufcient
heating performance is being produced, we recommend you
use this air conditioner in conjunction with another type of
heating appliance.
l Heat-pump air conditioners heat your entire room by recircu-
lating air throughout the room, with the result that some time
may be required after rst starting the air conditioner until the
room is heated.
When Indoor and Outdoor Temperature
are High*
When both indoor and outdoor temperatures are high during use
of the heating mode, the outdoor unit’s fan may stop at times
to protect the unit.
Fan speed: AUTO
Heating* : 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 set
temperature, the fan speed becomes slower.
Fan : The fan runs at the low fan speed.
OPERATING TIPS
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
Microcomputer-controlled Automatic
Defrosting*
l When using the heating mode under conditions of low out-
door 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. During the defrost cycle, the indoor fan will
shutdown and
will be displayed on the remote control-
ler. It will take anywhere from 4 to 15 minutes before the air
conditioner starts up again.
l After heating operation stops, if frost forms on the outdoor
unit, the unit will start automatic defrosting operation.
At this time, the outdoor unit will automatically stop after
operating for a few minutes.
Low Ambient Cooling
When the outdoor temperature drops, the outdoor unit’s fans may
switch to low speed, or one of the fans may stop intermittently.
Hot Start*
The indoor unit prevents cold drafts when heating operation
begins.
The indoor unit fan will not operate until the heat exchanger
reaches the set temperature.
Dual Remote Controllers (optional)
An additional remove controller can be added up to the maximum
of two remote controllers. Either remote controller can control
the air conditioner. However, the timer functions cannot be used
at the slave unit.
Group Control
1 remote controller can control up to 16 air conditioners.
All of the
air conditioners will be operated with the same settings.
15
OPERATING TIPS
Mode operation
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.
HEAT*: l Use to warm your room.
l
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 beginning full operation.
l
When the outdoor temperature is very low, frost may form on the outdoor
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 heat operation will be interrupted.
l
After the start of heating operation, it takes sometime before the room
gets warmer.
COOL:
l
Use to cool your room.
DRY:
l
Use for gently cooling while dehumidifying your room.
l
You cannot heat the room during dry mode.
l
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.
l
The fan speed cannot be changed manually when dry mode has been
selected.
FAN:
l
Use to circulate the air throughout your room.
AUTO [in HEAT & COOL (Reverse Cycle) model]:
l
When AUTO (automatic changeover) is selected, the air conditioner selects the appropriate operation mode (cooling
or heating) according to your room’s present temperature.
l
When AUTO operation rst selected, the fan will operate at low speed for about a few minute, during which time the
indoor unit detects the room conditions and selects the proper operation mode.
Room temperature is higher than the dened temperature in
temperature setting → Cooling mode or dry mode
Room temperature is close to the dened temperature in temperature
setting → Determined by outdoor temperature
Room temperature is lower than the dened temperature in
temperature setting → Heating mode
l
When the air conditioner has adjusted your room’s temperature to near the thermostat setting, it will begin monitor operation. In the monitor operation mode, the fan will operate at low speed. If the room temperature subsequently changes, the air conditioner will once again select the appropriate operation (heating, cooling) to adjust the temperature to
the value set in the thermostat.
l
If the mode automatically selected by the unit is not what you wish, select one of the mode operation (HEAT, COOL,
DRY, FAN).
Dened
temperature in
temperature
setting
Cooling or Dry
Heating
Determined by
outdoor temperature
AUTO (in COOLING model):
l
When AUTO (automatic changeover) operation rst selected, the fan will operate at very low speed for about a few
minutes, during which time the indoor unit detects the room conditions and selects the proper mode.
Room temperature is higher than the dened temperature in
temperature setting → Cooling mode or dry mode
Room temperature is close to or lower than the dened temperature in
temperature setting → Monitor operation
l
When the indoor unit has adjusted your room’s temperature to near the temperature setting, it will begin monitor oper-
ation. In the monitor operation mode, the fan will operate at low speed. If the room temperature subsequently changes,
the indoor unit will once again select the appropriate operation (cooling) to adjust the temperature to the value set in
the temperature setting.
l
If the mode automatically selected by the unit is not what you wish, select one of the mode operation (COOL, DRY,
FAN).
Dened
temperature in
temperature
setting
Cooling mode
or Dry mode
Monitor operation
16
OPERATING TIPS
l If the power supply to the air conditioner is interrupted by a
power failure, the air conditioner will restart automatically in
the previously selected mode once the power is restored.
l Use of other electrical appliances (electric shaver, etc.) or
nearby use of a wireless radio transmitter may cause the air
conditioner to malfunction. In this event, temporarily disconnect the power supply, reconnect it, and then use the remote
controller to resume operation.
AUTO Restart
In Event of Power Interruption
Notices
*l During use of the heating mode, the top of the indoor unit
may become warm, but this is due to the fact that coolant is
circulated through the indoor unit even when it is stopped; it
is not a malfunction.
*
l During use of the heating mode, the outdoor unit will oc-
casionally commence the defrost operation for brief periods.
During the defrosting operation, if the user sets the indoor
unit for heating again, the defrosting mode 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.
SELF-DIAGNOSIS
When “Er” in temperature indicator is displayed, inspection of the air conditioning system is necessary. Please consult authorized
service personnel.
Unit number (usually “00”)
Error code
ex. Self-diagnosis check
TEMPERATURE AND HUMIDITY RANGE
For the permissible ranges of temperature and humidity, refer to the installation manual.
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