AIR CONDITIONER
DUCT TYPE
ART Series
OPERATING MANUAL
KEEP THIS MANUAL FOR FUTURE REFERENCE
FUJITSU GENERAL LIMITED
P/N9374379293
CONTENTS
SAFETY PRECAUTIONS ........................................ 1
NAME OF PARTS .................................................. 2
PREPARATORY OPERATION ................................. 3
OPERATION ........................................................... 4
TIMER FUNCTIONS ............................................... 6
ON/OFF TIMER ....................................................... 6
WEEKLY TIMER ...................................................... 7
TEMPERATURE SET BACK TIMER ....................... 9
CLEANING AND CARE ........................................ 10
TROUBLESHOOTING .......................................... 10
OPERATING TIPS ................................................. 12
SELF-DIAGNOSIS ................................................ 14
SAFETY PRECAUTIONS
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:
DANGER!
WARNING!
CAUTION!
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.
This mark indicates procedures which, if improperly performed, might lead to the
death or serious injury of the user.
This mark indicates procedures which, if improperly performed, might possibly result
in personal harm to the user, or damage to property.
l Do not attempt to install this air conditioner by yourself.
l This unit contains no user-serviceable parts. Always consult authorized service person-
nel for repairs.
l When moving, consult authorized service personnel for disconnection and installation
of the unit.
l Do not become over-exposed to cold air by staying in the direct path of the airfl ow of
the air conditioner for extended periods of time.
l Do not insert fi 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 Provide occasional ventilation during use.
CAUTION!
l Do not direct air fl ow at fi 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 fl ower 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 wet hands.
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 chang-
ing the air fi 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 fl ow.
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 in applications involving the storage of foods, plants or animals, precision
equipment, or art works.
l Do not apply any heavy pressure to radiator fi ns.
l Operate only with air fi lters installed.
l Do not block or cover the intake grille and outlet port.
l Ensure that any electronic equipment is at least one metre away from either the indoor
or outdoor units.
l Avoid installing the air conditioner near a fi replace or other heating apparatus.
l When installing the indoor and outdoor units, take precautions to prevent access by
infants.
En-1
l Do not use infl ammable gases near the air conditioner.
NAME OF PARTS
Remote controller
I
H
G
F
2
6
7
8
9
0
A
1
Start/Stop Button
Set Temperature Button
2
Master Control Button
3
Fan Control Button
4
Economy Button
5
Timer Mode (CLOCK ADJUST)
6
Button
DAY (DAY OFF) Button
7
SET BACK Button
8
Set Time Button
9
DELETE Button
!
SET Button
"
Vertical Airfl ow Direction and
#
Swing Button
*1
J
K
E
1
3
4
C
B
5
D
$ Horizontal Airfl ow Direction and
Swing Button
% Filter Button
*2
*3
& Operation Lamp
Timer and Clock Display
(
Operation Mode Display
)
Fan Speed Display
~
Operation Lock Display
+
Temperature Display
,
Function Display
-
Horizontal Swing Display
Filter Display
Defrost Display
Thermo Sensor Display
Economy Display
Vertical Swing Display
*6
*4
*5
*1~6 These functions cannot be used.
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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
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 1minute 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
Press the DAY button and select the current day.
A
appears around the selected day.
5
Press again to end.
SUMOTUWETH FR
SA
SUMOTUWETH FR
SA
En-3
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
l 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 *HEATFAN
l Room temperature setting
Lower Rise
l Fan speed setting
ECONOMY OPERATION
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
Press the fan control 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 12.
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OPERATION
Room temperature sensor selection
Press the ECONOMY button for more than 2 seconds to select whether the room temperature is detected at the indoor
unit (remote sensor) or the remote controller.
Indoor unit
When the
temperature is detected at the remote controller.
thermo sensor display appears, the room
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 fl ashes when the ECONOMY button is pushed for 2 seconds or more.
Child lock function
Press the DAY (DAY OFF) button and SET button simultaneously 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 deactivate the child lock function.
When the child lock function is activated, the
appears. If any button is pressed during the child lock, the
mark
CL display and fl ash.
En-5
TIMER FUNCTIONS
OFF timer (See page 6.)
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 6.)
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 7.)
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 9.)
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
No display
NON
STOP
l To cancel
SUMOTUWETH FR
Press the timer mode button to select the ON timer or OFF timer.
OFF
TIMER
• 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.
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.
l Day of the week setting
3
1
Press the DAY button to select the day of the week, and then press the
SET button to confi rm the setting.
For ALL, all of the days can be set together when a appears around
each day.
l Time setting
2
SUMOTUWETH FR
369
SA
12 15 18 21
ALL SU MO TU WE TH FR SA
4
2
Press the SET button for 2 seconds or more.
SUMOTUWETH FR
369
When the operating time is set, the
mark appears.
SA
12 15 18 21
1
2
3
ON-1 OFF-1 ON-2 OFF-2
Press the set time buttons to set the time, and then press the SET button
to confi rm 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.
l To delete the operating time
5
Repeat steps 3 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.
SUMOTUWETH FR
369
ex. The timer is set for 7:00-18:00.
If the DELETE button is pressed during
3 or 4, the operating time for the
steps
selected day will be deleted.
If all the days are selected, the operating
times for all of the days will be deleted.
SA
12 15 18 21
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WEEKLY TIMER
WEEKLY timer operation
l To start
SUMOTUWETH FR
369
12 15 18 21
l 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 SET button for
2 seconds or more to set
the day.
SUMOTUWETH FR
369
SA
12 15 18 21
243
Select the day to set the
DAY OFF.
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 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 SET button for 2
seconds or more to complete the DAY OFF setting.
mark fl ashes under a day of the week.
l 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.
l Normal l Next day setting
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 one time. The DAY OFF setting is cancelled automatically after the set day has
passed.
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.
l Day setting l Operating time setting
3
1
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.
l Temperature setting
2
4
SA
12 15 18 21
3
Press the set temperature buttons to set
the temperature. (The temperature setting
range is the same as the range for the
operation mode.)
If there is no existing
SET BACK temperature setting, “- -” will
be displayed for the
temperature.
4
2
Press the SET button for 2
seconds or more.
SUMOTUWETH FR
369
ex. When setting all days together
SA
12 15 18 21
5
SET BACK temperature
Normal temperature
SUMOTUWETH FR
369
ex. Operating time 15:00–22:00
ON
24°C
12 15 18 21
28°C
SA
OFF
24°C
Temperature SET BACK timer operation
l 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.
SUMOTUWETH FR
SA
Repeat steps 3 and 4.
Press the SET button for 2 seconds or more to complete the
temperature SET BACK timer
settings.
l To cancel
1
Press the SET BACK button, and then
press the DELETE button 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
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 confi rmation display. (Refer to step 1 for the SET BACK
confi rmation display.)
En-9
CLEANING AND CARE
CAUTION!
l 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.
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 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.
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.
Cleaning the Air Filter
l 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.
l 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 detergent
and warm water. If you wash the fi lter, be sure to allow it to dry thoroughly in a shady place before reinstalling.
l If dirt is allowed to accumulate on the air fi lter, air fl ow will be reduced, lowering operating effi ciency and increasing
noise.
TROUBLESHOOTING
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
WARNING!
Before requesting service, perform the following checks:
NORMAL
FUNCTION
Doesn’t operate immediately:
Noise is heard: l During operation and immediately after stopping the unit, the
Smells: l Some smell may be emitted from the indoor unit. This smell is
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.
Symptom Problem
l 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.
l 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.
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).
*l During Heating operation, a sizzling sound may be heard
occasionally. This sound is produced by the Automatic Defrosting
operation.
the result of room smells (furniture, tobacco, etc.) which have
been taken into the air conditioner.
See Page
—
—
12
—
En-10
TROUBLESHOOTING
NORMAL
FUNCTION
Symptom Problem
Mist or steam are
emitted:
Airfl ow is weak or stops: *l When Heating operation is started, fan speed is temporarily very
l 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.
*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.
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,
be shown on the remote controller display.
l The fan may operate at very low speed during Dry operation or
when the unit is monitoring the room’s temperature.
In case of Multi-type unit, if multiple units are operated in
l
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
will be shown on the remote
will
See Page
—
12
—
12
—
14
CHECK ONCE
MORE
l During QUIET operation, the fan will operate at very low speed. —
l In the monitor AUTO operation, the fan will operate at very low
speed.
Water is produced from
the outdoor unit:
thermo sensor
display on the remote
controller is fl ashing:
Doesn’t operate at all: l Has the circuit breaker been turned off?
Poor Cooling (or *Heating)
performance:
*l During Heating operation, water may be produced from the out-
door unit due to the Automatic Defrosting operation.
l The room temperature sensor may be malfunctioning. Please
consult authorized service personnel.
l Has there been a power failure?
l Has a fuse blown out, or a circuit breaker been tripped?
l Is the timer operating? —
l Is the air fi lter dirty?
l Are the air conditioner’s intake grille or outlet port blocked?
l Did you adjust the room temperature settings (thermostat) cor-
rectly?
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?
—
12
—
—
—
If the problem persists after performing these checks, or if you notice burning smells, stop operation immediately, disconnect
the power supply, and consult with authorized service personnel.
En-11
l Is the unit set for QUIET operation? —
OPERATING TIPS
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).
*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
insuffi cient heating performance is being produced, we
recommend you use this air conditioner in conjunction
with another kind of heating appliance.
l 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
l When both indoor and outdoor temperatures are high
during use of the heating mode, the outdoor unit’s fan
may stop at times.
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.
*Microcomputer-controlled Automatic
Defrosting
Low Ambient Cooling
l 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 or it will operate at a
very low speed until the heat exchanger reaches the set
temperature.
About ECONOMY OPERATION
At the maximum output, ECONOMY OPERATION is approximately 70% of normal air conditioner operation for cooling
and heating.
When ECONOMY OPERATION is performed during the
cooling mode, dehumidifi cation is improved. This function
is especially convenient when you want to remove the
humidity in the room without signifi cantly lowering the
room temperature.
During ECONOMY OPERATION, the thermostat setting
automatically changes according to the temperature to avoid
Unnecessary cooling and heating for the most economical
operation.
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 button.
l 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.
will be displayed
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
One remote controller can control up to 16 air conditioners.
All of the air conditioners will be operated with the same
settings.
En-12
OPERATING TIPS
Mode operation: AUTO
COOLING MODEL
l When the room temperature is 2 °C higher than the set
temperature, the mode will switch between Cooling and
Drying.
HEAT & COOL MODEL (Reverse Cycle)
Auto changeover function
l When AUTO CHANGEOVER is selected, the air conditioner
selects the appropriate operation mode (Cooling or Heating) according to your room’s present temperature.
l When AUTO CHANGEOVER is fi rst selected, the fan will
operate at a very low speed for about 1 minute 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 +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: 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 room temperature is very low, frost may form on the outside
unit, and its performance may be reduced. In order to remove such
frost, the unit will automatically enter the defrost cycle from time to
time. During Automatic Defrosting operation, the heat operation will
be interrupted.
l After the start of heating operation, it takes sometime before the room
gets warmer.
Cooling: 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.
l 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.
l 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. (The
monitor operation range is ±2 °C relative to the thermostat
setting.)
During Heating mode:
Set the thermostat to a temperature setting that is higher than the current room
temperature. The Heating mode will not
operate if the thermostat is set lower than
the actual room temperature.
During Cooling/Dry mode:
Set the thermostat to a temperature setting that is lower than the current room
temperature. The Cooling and Dry modes
will not operate if the thermostat is set
higher than the actual room temperature
(in Cooling mode, the fan alone will operate).
During Fan mode:
You can not use the unit to heat and cool
your room.
En-13
OPERATING TIPS
AUTO Restart
In Event of Power Interruption
l Should the power supply to the air conditioner be inter-
rupted 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 control unit to resume operation.
Multi-type Air conditioner
This indoor unit can be connected to a multi-type outdoor unit. The multi-type air conditioner allows multiple indoor units to be
operated in multiple locations. The indoor units may be operated simultaneously, in accordance with their respective output.
Simultaneous Use of Multiple Units
Instructions relating to inverter (v) are applicable only to “INVERTER MODEL”.
l When using a multi-type air conditioner, the multiple
indoor units can be operated simultaneously, but when
two or more indoor units of the same group are operated simultaneously, the heating and cooling effi ciency
will be less than when a single indoor unit is used alone.
Accordingly, when you wish to use more than one indoor
unit for cooling at the same time, the use should be
concentrated at night and other times when less output
is required. In the same way, when multiple units are
used simultaneously for heating, it is recommended that
they be used in conjunction with other auxiliary space
heaters, as required.
l Seasonal and outdoor temperature conditions, the struc-
ture of the rooms and the number of persons present
may also result in differences of operating effi ciency.We
recommend that you try various operating patterns in
order to confi rm the level of heating and cooling output
provided by your units, and use the units in the way that
best matches your family's lifestyle.
l lf you discover that one or more units delivers a low level
of cooling or heating during simultaneous operation, we
recommend that you stop simultaneous operation of the
multiple units.
v
l Operation cannot be done in the following different
operating modes.
If the indoor unit is instructed to do an operating mode
that it cannot perform,
mote controller display and the unit will go into the
standby mode.
Heating mode and cooling mode (or dry mode)
Heating mode and fan mode
v
l Operation can be done in the following different operat-
ing modes.
Cooling mode and dry mode
Cooling mode and fan mode
Dry mode and fan mode
v
l The operating mode (heating mode or cooling (dry)
mode) of the outdoor unit will be determined by the
operating mode of the indoor unit that was operated
fi rst.If the indoor unit was started in fan mode, the op-
erating mode of the outdoor unit will not be determined.
For example, if indoor unit (A) was started in fan mode
and then indoor unit (B) was then operated in heating
mode, indoor unit (A) would temporarily start operation
in fan mode but when indoor unit (B) started operating
in heating mode,
controller display and it would go into standby mode.
Indoor unit (B) would continue to operate in heating
mode.
will be shown on the re-
will be shown on the remote
Notice
*l During use of the heating mode, the outdoor unit will
occasionally 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 “EE” in Temperature Display is displayed, inspection of the air conditioning system is necessary. Please consult
authorized service personnel.
Unit number (usually 0)
SUMOTUWETH FR
ex. Self-diagnosis check
SA
*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.
Error code
En-14
TEMPERATURE AND HUMIDITY RANGE
Permissible ranges of temperature and humidity are as follows:
Inverter Single Model Inverter Multi Model
Cooling / Dry
Operation
Heating
Operation
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.
l
Outdoor temperature About –10°C to 46°C About 0°C to 46°C
Indoor temperature About 18°C to 32°C About 18°C to 32°C
Below approximately 80%.
Indoor humidity
Outdoor temperature About –15°C to 24°C About –10°C to 24°C
Indoor temperature About below 30°C About below 30°C
If the air conditioner is used continuously for many hours,
water may condense on the surface and drip.
FUJITSU GENERAL LIMITED
1116, Suenaga, Takatsu-ku, Kawasaki 213-8502, Japan
En-15
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