Fujitsu ARU9RLF Installation Manual
Duct Type
PART NO.9374343072-04
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CONTENTS
SAFETY PRECAUTIONS ........................................ 1
FEATURES AND FUNCTIONS ............................... 2
NAME OF PARTS ................................................... 3
PREPARATORY OPERATION ................................. 4
OPERATION ........................................................... 5
TIMER FUNCTIONS ............................................... 7
ON/OFF TIMER ........................................................ 7
WEEKLY TIMER ....................................................... 8
TEMPERATURE SET BACK TIMER ...................... 10
ECONOMY OPERATION .......................................11
CLEANING AND CARE .........................................11
TROUBLESHOOTING .......................................... 12
OPERATING TIPS .................................................. 14
SELF-DIAGNOSIS ................................................. 16
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:
DANGER!
WARNING!
CAUTION!
DANGER!
CAUTION!
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This mark indicates procedures which, if improperly performed, are most likely to result
in the death or serious injury to the user or service personnel.
This mark indicates procedures which, if improperly performed, might lead to the death
or serious injury of the user or service personnel.
This mark indicates procedures which, if improperly performed, might possibly result
in personal harm to the user, or damage to property.
Do not attempt to install this air conditioner by yourself.
This unit contains no user-serviceable parts. Always consult authorized service person-
nel for repairs.
When moving, consult authorized service personnel for disconnection and installation
of the air conditioner.
Do not become excessively chilled by staying for many hours in the direct cooling
airflow.
Do not insert fi ngers or objects into the outlet port or intake grilles.
Do not start and stop air conditioner operation by turning off the electrical breaker and so on
In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off
the electrical breaker, and consult authorized service personnel.
In the event of refrigerant leakage , be sure to keep away from fi re or any fl ammables
(consult an authorized service personnel)
Provide occasional ventilation during use.
Do not direct air fl ow at fi replaces 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 fl ower 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 touch the switches with sharp objects.
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 fi lter
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 fl ow.
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 fi ns.
Operate only with air fi lters installed.
Do not block or cover the intake grille and outlet port.
Ensure that any electronic equipment is at least 40 in. (1m) away from either the indoor
or outdoor units.
Avoid installing the air conditioner near a fi replace or other heating apparatus.
When installing the indoor and outdoor units, take precautions to prevent access by infants
Do not use infl ammable gases near the air conditioner.
Install the drain hose so that it drains water properly.
This 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.
.
.
.
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FEATURES AND FUNCTIONS
Energy saving and
Comfortable 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.
SUPER QUIET OPERATION
When the FAN button is used to select QUIET, the indoor
unit begins super-quiet operation; the indoor unit’s airfl ow
is reduced to produce quieter operation.
Clean function
REMOVABLE AIR FILTER
The indoor unit’s air fi lter 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.
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.
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.
Convenient function
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.
[ The additional function for wireless ones ]
• SLEEP
• TIMER
• MINIMUM HEAT
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
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NAME OF PARTS
Remote controller
I
H
G
F
2
6
7
8
9
0
A
START/STOP Button
1
SET TEMP. (Temperature) Button
2
MODE Button
3
FAN Button
4
ECONOMY Button
5
TIMER MODE (CLOCK AD-
6
JUST) Button
DAY (DAY OFF) Button
7
SET BACK Button
8
SET TIME ( < > ) Button
9
TIMER DELETE Button
0
TIMER SET Button
A
Vertical Airfl ow Direction and
B
Swing Button
*1
J
K
E
1
3
4
C
B
5
D
Horizontal Airfl ow Direction and
C
Swing Button
MAINTENANCE(FILTER RESET)
D
Button
Operation Lamp
E
Timer and Clock Display
F
Operation Mode Display
G
Fan Speed Display
H
Operation Lock Display
I
Temperature Display
J
Function Display
K
#1
Defrost Display
Thermo Sensor Display
ECONOMY Display
Vertical Swing Display
Filter Display
*2
*3
#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
serviceman when using this function.
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PREPARATORY OPERATION
Set the current day and time
1
Press the TIMER MODE (CLOCK
ADJUST) button for 2 seconds
or more. The time display on the
remote controller will fl ash.
3
3
4
SET BACK
SUMOTUWETH FR
2
SU MO TU WE TH FR SA
Press the SET TIME (< >) buttons to set the current time.
Press repeatedly to adjust the current time in 1-minute
increments. Press and hold to adjust the current time in
10-minute increments.
SUMOTUWETH FR
ex. Monday PM11:00
Press the SET BACK button to switch between the
12- and 24-hour time displays.
SA
SA
Press the DAY button and select the current day.
A
appears around the selected day.
SUMOTUWETH FR
SA
5
Press again to end.
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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
To set the operation mode
Operation mode setting
Room temperature setting
Lower Rise
Press the MODE button to set the operation mode.
If DRY is selected, the fan speed will be set to AUTO.
AUTO COOL DRY *HEATFAN
Press the SET TEMP. buttons to set the room temperature.
Temperature setting range
AUTO ............................................... 64 to 88 °F
COOL/DRY ....................................... 64 to 88 °F
* HEAT ................................................ 60 to 88 °F
Fan speed setting
ECONOMY OPERATION
Press the FAN button to set the fan speed.
AUTO MEDHIGH LOW QUIET
Press the ECONOMY button to start or stop ECONOMY
OPERATION.
For details on the function, refer to page 11.
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OPERATION
Room temperature sensor selection
• This function is locked at the factory. In order to detect the room temperature correctly, consult authorized service
personnel when using this function.
Indoor unit
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
temperature is detected at the remote controller.
thermo sensor display appears, the room
NOTES
• If this function is locked, the location where the room temperature is detected cannot be changed and the
mark fl ashes when the ECONOMY button is pushed for 2 seconds or more.
Part lock function
Press the DAY (DAY OFF) button and TIMER SET button
simultaneously for 2 seconds or more to activate the part
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 part lock function.
When the part lock function is activated, the
appears. If any button is pressed during the part lock, the
display fl ashes.
PL
mark
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TIMER FUNCTIONS
OFF timer (See page 7.)
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 7.)
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 8.)
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 10.)
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
To cancel
No display
NON
STOP
SUMOTUWETH FR
Press the TIMER MODE button to
select the ON timer or OFF timer.
OFF
TIMER
• 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
ON
TIMER
WEEKLY
TIMER
2
From 1 to 24 hours
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 display decreases as time passes.
ex. OFF timer set for 6 hours
SA
.
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WEEKLY TIMER
Weekly timer setting
1
Press the TIMER MODE button to select the weekly timer.
Day of the week setting
3
1
Press the DAY button to select the day of the week, and then press the
TIMER SET button to confi rm the setting.
For ALL, all of the days can be set together when a appears around
each day.
Time setting
2
SUMOTUWETH FR
369
SA
12 15 18 21
ALL SU MO TU WE TH FR SA
4
1
2
3
2
Press the TIMER SET button for
2 seconds or more.
SUMOTUWETH FR
369
When the operating time is set, the
mark appears.
SUMOTUWETH FR
SA
12 15 18 21
SA
ON-1 OFF-1 ON-2 OFF-2
Press the SET TIME (< >) buttons to set the time, and then press the TIMER SET
button to confi rm 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.
To delete the operating time
5
Repeat steps 3 and 4.
To complete the weekly timer settings, press the
TIMER 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.
If the TIMER DELETE button is pressed
during steps
for the selected day will be deleted.
If all the days are selected, the operating
times for all of the days will be deleted.
369
12 15 18 21
ex. The timer is set for 7:00-18:00.
3 or 4, the operating time
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WEEKLY TIMER
WEEKLY timer operation
To start
SUMOTUWETH FR
369
12 15 18 21
To cancel
SA
When the weekly timer is selected, the
timer starts automatically.
To set the DAY OFF (for a holiday)
1
During the weekly timer,
press the TIMER SET button
for 2 seconds or more to set
the day.
SUMOTUWETH FR
369
12 15 18 21
243
Select the day to set the
DAY OFF.
SA
369
ex. Operating time 7:00-18:00
The operating time for the current
day is displayed.
SUMOTUWETH FR
369
ex. The DAY OFF is set for Monday.
12 15 18 21
Press the DAY (DAY OFF)
button for 2 seconds or
more to set the DAY OFF.
SA
The
12 15 18 21
• 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.
Press the TIMER SET button for 2 seconds or more
to complete the DAY OFF
setting.
mark fl ashes under a day of the week.
To cancel
Follow the same procedures as
those for setup.
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
DAY OFF
ON OFF ON OFF
WEEKLY WEEKLY
Setting dayPreceding day Next day Setting dayPreceding day Next day
• The DAY OFF setting can only be set 1 time. The DAY OFF setting is cancelled automatically after the set day has
passed.
Next day setting
ON
WEEKLY
OFF
DAY OFF
ON
WEEKLY
OFF
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TEMPERATURE SET BACK TIMER
Temperature SET BACK timer setting
SET BACK
SUMOTUWETH FR
1
369
Press the SET BACK button to change to the SET BACK confi rmation display.
The SET BACK operating time and the set temperature will
be displayed.
Day setting
SA
12 15 18 21
Operating time setting
If there is no existing
SET BACK temperature setting, “- -” will
be displayed for the
temperature.
2
Press the TIMER SET button
for 2 seconds or more.
3
1
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.
Temperature setting
4
2
Press the SET TEMP. buttons to set the
temperature. (The temperature setting
range is the same as the range for the
operation mode.)
SUMOTUWETH FR
3
SA
4
ex. When setting all days together
5
369
12 15 18 21
SET BACK temperature
Normal temperature
ex. Operating time 15:00–22:00
84˚F
ON OFF
76˚F
76˚F
Repeat steps 3 and 4.
Press the TIMER SET button for
2 seconds or more to complete
the temperature SET BACK
timer settings.
Temperature SET BACK timer operation
To cancel
To start
SET BACK
ex. Display during SET BACK timer operation
(The operating time will not be displayed.)
Press the SET BACK button. The SET BACK confi rmation display appears
for 5 seconds, and then the timer starts automatically.
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 2 times per day but only 1 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 confi rmation display. (Refer to step 1 for the SET
BACK confi rmation display.)
SUMOTUWETH FR
SA
1
Press the SET BACK button, and then
press the TIMER DELETE but ton while
the SET BACK confi rmation display is
displayed. Even if the SET BACK button is pressed again, the SET BACK
timer will be cancelled.
2
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ECONOMY OPERATION
Begin Air Conditioner operation before performing this procedure.
To Use the ECONOMY Operation
Press the ECONOMY button.
The ECONOMY display will light.
ECONOMY operation begins.
To Stop the ECONOMY Operation
Press the ECONOMY button again.
The ECONOMY display 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.
If the room is not cooled (or heated) well during ECONOMY operation, select normal operation.
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.
When ECONOMY operation mode is operated, the room temperature will be little higher than the set-temp under cool-
ing mode and lower than set-temp under heating mode. Therefore, the ECONOMY mode is able to save more energy
than other normal mode.
In case of multi-type air conditioner, the ECONOMY operation mode is only available for the set indoor unit.
CLEANING AND CARE
Before cleaning the unit, be sure to stop the unit and disconnect the power supply.
CAUTION!
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 104 °F, harsh abrasive cleansers, or volatile agents like
benzene or thinner.
Do not expose the unit body to liquid insecticides or hairsprays.
If the unit will not be operated for a period of 1 month or more, be sure to allow the inner parts of the unit to dry thor-
oughly, in advance, by operating the unit in fan mode for half a day.
Turn off the electrical breaker.
A fan operates at high speed inside the unit, and personal injury could result.
Cleaning the Air Filter
Remove the dust from the air fi lters by vacuuming or washing them. After washing, allow the air fi lters to dry thoroughly
in an area protected from sunlight.
Dust can be cleaned from the air fi lter either with a vacuum cleaner, or by washing the fi lter in a solution of mild deter-
gent and warm water. If you wash the fi lter, be sure to allow it to dry thoroughly in a shady place before reinstalling.
If dirt is allowed to accumulate on the air fi lter, air fl ow will be reduced, lowering operating effi ciency and increasing
noise.
Filter indicator Reset (A special setting)
Can be used if set correctly during installation. Please consult authorized serviceman when using this
function.
• It lights on when it is time to clean the air fi lters.
After turning the power on.
Press the MAINTENANCE button for
2 seconds or more on the remote control.
The fi lter display will disappear.
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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
WARNING!
Before requesting service, perform the following checks:
NORMAL
FUNCTION
Doesn’t operate immediately:
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.
Symptom Problem
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 electrical breaker is turned off then on again, the
protection circuit will operate for about 3 minutes, preventing
unit operation during that period.
See Page
—
Noise is heard:
Smells:
Mist or steam are
emitted:
Airfl ow is weak or stops:
During operation and immediately after stopping the unit, the
sound of water fl 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 fl owing)
* During Heating operation, a sizzling sound may be heard
occasionally. This sound is produced by the Automatic
Defrosting operation.
Some smell may be emitted from the indoor unit. This smell is
the result of room smells (furniture, tobacco, etc.) which have
been taken into the air conditioner.
During Cooling or Dry operation, a thin mist may be seen emit-
ted 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 Automatic Defrosting operation.
* When Heating operation is started, fan speed is temporarily
very low, to allow internal parts to warm up.
* During Heating operation, if the room temperature rises above
the thermostat setting, the outdoor unit will stop, and the indoor
unit will operate at very low fan speed. If you wish to warm the
room further, set the thermostat to a higher setting.
* During Heating operation, the unit will temporarily stop opera-
tion (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
—
—
14
—
14
The fan may operate at very low speed during Dry operation or
Water is produced from
the outdoor unit:
thermo sensor
display on the remote
controller is fl ashing:
when the unit is monitoring the room’s temperature.
In case of Multi-type unit, if multiple units are operated in
different operation modes as shown below, the units operated
afterward will stop and
controller display of the stopped indoor units.
Heating mode and cooling mode (or dry mode)
Heating mode and fan mode
During QUIET operation, the fan will operate at very low speed.
In the monitor AUTO operation, the fan will operate at very low speed
* During Heating operation, water may be produced from the
outdoor unit due to the Automatic Defrosting operation.
The room temperature sensor may be malfunctioning. Please
consult authorized service personnel.
will be shown on the remote
—
16
—
—
.
14
—
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TROUBLESHOOTING
Symptom Problem
CHECK ONCE
MORE
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.
Doesn’t operate at all:
Poor Cooling (or *Heating)
performance:
Has the circuit breaker been turned off?
Has there been a power failure?
Has a fuse blown out, or a circuit breaker been tripped?
Is the timer operating?
Is the air fi lter 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 apparatus
and computers inside the room, or are there too many people
in the room?
Is the unit set for QUIET operation?
See Page
—
7 to 9
—
—
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OPERATING TIPS
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
*Heating Performance
This air conditioner operates on the heat-pump principle,
absorbing heat from outdoor air and transferring that
heat indoors. As a result, the operating performance is
reduced as outdoor air temperature drops. If you feel that
insuffi cient heating performance is being produced, we
recommend you use this air conditioner in conjunction
with another type 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 fi 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.
*Microcomputer-controlled Automatic
Defrosting
When using the Heating mode under conditions of low
outdoor temperature and high humidity, frost may form
on the outdoor unit, resulting in reduced operating performance.
In order to prevent this kind of reduced performance,
this unit is equipped with a Microcomputer-controlled
Automatic Defrosting function. During the defrost cycle,
the indoor fan will shutdown and
on the remote controller. It will take anywhere from 4 to
15 minutes before the air conditioner starts up again.
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.
will be displayed
Low Ambient Cooling
When the outdoor temperature drops, the outdoor unit’s
fans may switch to Low Speed, or 1 of the fans may stop
intermittently.
Dual Remote Controllers (optional)
An additional remote controller can be added up to the
maximum of 2 remote controllers. Either remote controller
can control the air conditioner. However, the timer functions
cannot be used at the secondary 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.
Group control cannot be used when using it by the multi
type.
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OPERATING TIPS
Mode operation: AUTO
COOLING MODEL
When the room temperature is 4 °F higher than the set
temperature, the mode will switch between Cooling and
Drying.
HEAT & COOL MODEL (Reverse Cycle)
Auto changeover function
When AUTO CHANGEOVER is selected, the air condi-
tioner selects the appropriate operation mode (Cooling
or Heating) according to your room’s present temperature.
When AUTO CHANGEOVER is fi rst selected, the fan will
operate at a very low speed for about a few minutes
while the unit determines the current conditions of the
room and selects the proper operation mode.
If the difference between thermostat setting and actual
room temperature is more than +4 °F
→ Cooling operation
If the difference between thermostat setting and actual
room temperature is within ±4 °F
Determined by outdoor temperature
→
If the difference between thermostat setting and actual
room temperature is more than –4 °F
Heating operation
→
During the Drying mode operation, the FAN setting
should be switched to LOW for a gently cooling effect
during which the fan may temporarily stop rotating.
When the room temperature is near the thermostat set-
ting, the air conditioner will begin monitor operation.
In the monitor operation mode, the fan will operate at a
very low speed. If the room temperature subsequently
changes, the air conditioner will once again select the
appropriate operation (Heating or Cooling) to adjust the
temperature to the value set in the thermostat.
About Mode Operation
* Heating:
Cooling:
Dry:
Fan:
Use to warm your room.
When Heating mode is selected, the air conditioner will operate at
very low fan speed for about 3 to 5 minutes, after which it will switch
to the selected fan setting. This period of time is provided to allow
the indoor unit to warm up before beginning full operation.
When the room temperature is very low, frost may form on the out-
side 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.
After the start of heating operation, it takes sometime before the
room gets warmer.
Use to cool your room.
Use for gently cooling while dehumidifying your room.
You cannot heat the room during Dry mode.
During Dry mode, the unit will operate at low speed; in order to
adjust room humidity, the indoor unit’s fan may stop from time to
time. Also, the fan may operate at very low speed when adjusting
room humidity.
The fan speed cannot be changed manually when Dry mode has
been selected.
Use to circulate the air throughout your room.
During Heating mode:
Set the thermostat to a temperature setting that is higher than the current room
temperature. The Heating mode will not
operate if the thermostat is set lower
than the actual room temperature.
During Cooling/Dry mode:
Set the thermostat to a temperature setting that is lower than the current room
temperature. The Cooling and Dry modes
will not operate if the thermostat is set
higher than the actual room temperature
(in Cooling mode, the fan alone will operate).
During Fan mode:
You can not use the unit to heat and
cool your room.
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