AirStage UTY-LNH series User manual

P/N9379143004-03
OPERATING MANUAL
AIR CONDITIONER
Remote Controller
UTY-LNH
REMOTE CONTROLLER
(WIRELESS TYPE)
TM
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OPERATING MANUAL
BEDIENUNGSANLEITUNG
MODE D’EMPLOI
MANUAL DE FUNCIONAMIENTO
MANUALE DI ISTRUZIONI
ΕΓΧΕΙΡΙ∆ΙΟ ΛΕΙΤΟΥΡΓΙΑΣ
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ
MANUAL DE INSTRUÇÕES
KEEP THIS MANUAL FOR FUTURE REFERENCE
DIESE ANLEITUNG BITTE SORGFÄLTIG AUFBEWAHREN
CONSERVEZ CE MODE D’EMPLOI AFIN DE POUVOIR VOUS Y RÉFÉRER ULTÉRIEUREMENT
GUARDE ESTE MANUAL PARA PODERLO CONSULTAR EN EL FUTURO
CONSERVARE QUESTO MANUALE PER OGNI EVENTUALE FUTURO RIFERIMENTO
ΚΡΑΤΗΣΤΕ ΤΟ ΕΓΧΕΙΡΙ∆ΙΟ ΓΙΑ ΜΕΛΛΟΝΤΙΚΗ ΑΝΑΦΟΡΑ
СОХРАНИТЕ НАСТОЯЩЕЕ РУКОВОДСТВО ДЛЯ БУДУЩИХ ССЫЛОК
GUARDE ESTE MANUAL PARA CONSULTA POSTERIOR
FUJITSU GENERAL LIMITED
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CONTENTS
SAFETY PRECAUTIONS ................................................ 1
FEATURES AND FUNCTIONS ...................................... 2
NAME OF PARTS ........................................................... 3
PREPARATION ............................................................... 4
OPERATION ................................................................... 5
TIMER OPERATION ....................................................... 7
SLEEP TIMER OPERATION ........................................... 8
MANUAL AUTO OPERATION ....................................... 8
ECONOMY OPERATION ................................................ 9
FILTER RESET ................................................................ 9
SELECTING THE REMOTE CONTROL UNIT
SIGNAL CODE .............................................................. 10
OPERATING TIPS ......................................................... 11
TROUBLESHOOTING .................................................. 13
SPECIFICATIONS ......................................................... 14
SAFETY PRECAUTIONS
●The “SAFETY PRECAUTIONS” indicated in this operating manual contain important information pertaining to your safety.
Be sure to observe them.
●Details of the operation methods refer to the operating manual. Request the user to keep them on hand for future use,
such as for relocating or repairing the unit.
WARNING This mark indicates procedures which, if improperly performed, might lead to the death or serious
injury of the user.
CAUTION This mark indicates procedures which, if improperly performed, might possibly result in personal harm
to the user or damage to property.
• Do not disassemble the unit. Contact with internal cir-
cuitry may cause fire or malfunction.
• Do not drop the unit. Doing so may cause the case to
crack and may disable control.
• Do not press any button using a sharp object. Doing so
may cause an electric shock or a malfunction.
• Do not wipe the unit with benzine, thinner or chemical
cloths etc. Doing so may cause discoloration or mal-
function. If the unit becomes extremely dirty, dampen
a cloth with water-diluted neutral detergent and wipe
the unit with it.
• Do not place electrical devices within 1 meter of this
unit. It may cause malfunction or failure.
• Do not use fire near this unit or place a heating appara-
tus nearby. It may cause malfunction.
• Do not expose this unit directly to water. Doing so will
cause trouble, electric shock, or heating.
• Do not set flower vases or water containers on top of
the unit. It may cause heating, fire or electric shock.
• Do not touch any button with wet hands. Doing so may
cause an electric shock or malfunction.
• Dispose of the packing materials safely. Tear and dis-
pose of the plastic packing bags so that children can-
not play with them. There is the danger of suffocation
if children play with the original plastic bags.
• Do not spray insecticide or other flammable sprays. Do
not place flammable sprays near the unit or spray di-
rectly at the unit. Doing so may result in fire or explo-
sion.
• Do not use in applications involving the storage of
foods, plants or animals, precision equipment, or art
works.
• Do not wash with water. Doing so may cause an elec-
tric shock or malfunction.
• Do not use in any special environment. Using in any
place exposed to oil (including machine oil), steam and
sulfuric gas may deteriorate the performance signifi-
cantly or give damage to the component parts.
• This unit contains no user-serviceable parts. Always
consult authorized service personnel for repairs.
• When moving, consult authorized service personnel for
disconnection and installation of this unit.
• If children may approach the unit, take preventive meas-
ures so that they cannot reach the unit.
• Do not repair or modify by yourself. It may cause fai-
lure or accident.
• Stop operation immediately when indication lamp of
indoor unit blinks, or abnormal situation is displayed.
Continuous operation may cause fire or failure.
• Do not use flammable gases near the unit. It may cause
a fire from leaking gas.
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FEATURES AND FUNCTIONS
AUTOMATIC OPERATION
●COOLING MODEL
Merely press the START/STOP button, and the unit will
begin automatic operation in the Cooling or Dry mode as
appropriate, in accordance with the thermostat setting
and the actual temperature of the room.
●HEAT & COOL MODEL
Merely press the START/STOP button, and the unit will
begin automatic operation in either the Heating, Cooling
or Monitor modes as appropriate, in accordance with the
thermostat setting and the actual temperature of the room.
SLEEP TIMER
●COOLING MODEL
When the SLEEP timer button is pressed during Cooling
or Dry mode, the thermostat setting is gradually raised
during the period of operation. When the set time is
reached, the unit automatically turns off.
●HEAT & COOL MODEL
When the SLEEP timer button is pressed during Heating
mode, the air conditioner’s thermostat setting is gradu-
ally lowered during the period of operation; during Cool-
ing or Dry mode, the thermostat setting is gradually raised
during the period of operation. When the set time is
reached, the unit automatically turns off.
WIRELESS REMOTE CONTROL UNIT
The WIRELESS REMOTE CONTROL UNIT allows convenient
control of air conditioner operation.
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L
N
O
M
K
H
G
I
J
NAME OF PARTS
Display panel
To facilitate explanation, the accompanying illustration
has been drawn to show all possible indicators; in ac-
tual operation, however, the display will only show those
indicators appropriate to the current operation.
1MODE button
2ECONOMY button
3SET TEMP. button ( / )
4FILTER RESET button
5SLEEP button
6FAN button
7START/STOP button
8SET button (Vertical)
9SET button (Horizontal)
0SWING button
ATIMER MODE button
BTIMER SET ( / ) button
CCLOCK ADJUST button
DRESET button
ETEST RUN button
This is used during test operation. For details,
refer to the installation manual.
FSignal Transmitter
GTemperature SET Display
HECONOMY Display
IOperating Mode Display
JSLEEP Display
KTransmit Indicator
LFan Speed Display
MSWING Display
NTimer Mode Display
OClock Display
Notes of the operation
Functions of START/STOP, MODE, SET TEMP. and TIMER
SET may be restricted depending on the operating state
of the indoor unit.
In this case, when the signal of remote control unit is
received, it is notified by the blinking of TIMER lamp.
Remote control unit
F
1
2
7
4
5
6
8
9
0
A
CD
3
E
B
Display
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PREPARATION
Load Batteries (R03/LR03 ××
××
×2)
1Press and slide the battery compartment lid on the re-
verse side to open it.
Slide in the direction of the arrow while pressing the mark.
2Insert batteries.
Be sure to align the battery polarities ( ) correctly.
3Close the battery compartment lid.
4Press the RESET button.
Use the tip of a ball-point pen or other small object to press the button.
Set the Current time
1Press the CLOCK ADJUST button.
Use the tip of a ball-point pen or other small object to press the button.
2Use the TIMER SET ( / ) buttons to adjust the
clock to the current time.
button: Press to advance the time.
button: Press to reverse the time.
(Each time the buttons are pressed, the time will be advanced/reversed in
one-minute increments; hold the buttons depressed to change the time
quickly in ten-minute increments.)
3Press the CLOCK ADJUST button again.
This completes the time setting and starts the clock.
To Use the Remote Control Unit
●The Remote Control Unit must be pointed at remote control signal receiver to
operate correctly.
●Operating Range: About 5 meters.
●When a signal is properly received by the receiver unit control panel, some lamp
will be flashed.
●If no lamp is flashed, press the Remote Control Unit button again.
WARNING
Never allow the alkaline batteries to
short-circuit. Never disassemble, heat or
place them in fire.
●Doing so can cause the strong alka-
line liquid to leak and possibly enter
your eyes or cause the batteries to ex-
plode or heat up, resulting in personal
injuries, burning or mechanical break-
downs.
●If strong alkaline liquid comes in con-
tact with your skin or clothes, wash it
off with clean water. If it gets in to your
eyes, wash them with clean water and
consult a doctor immediately.
CAUTION
Incorrect use of batteries can cause
liquid leakage, explosion or heating and
may result in malfunction or personal
injury. Adhere to the following.
●Do not recharge the batteries.
●Insert the batteries in the correct di-
rection.
●Do not mix a new battery with an old
battery or batteries of different types.
●Remove the batteries immediately
when they have run out.
Take care to prevent infants from acci-
dentally swallowing batteries.
When not using the unit for an extended
period, remove the batteries to avoid
possible leakage and damage to the
unit.
Dead batteries should be removed im-
mediately and disposed of properly, ei-
ther in a battery collection receptacle or
to the appropriate authority.
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To Select Mode Operation
1Press the START/STOP button.
The receiver unit control panel’s OPERATION Indicator Lamp (green) will
light.
The air conditioner will start operating.
2Press the MODE button to select the desired mode.
Each time the button is pressed, the mode will change in the following
order.
AUTO COOL DRY
HEAT FAN
About three seconds later, the entire display will reappear.
*1 “AUTO”can be set only in the indoor unit assigned to the repre
sentative indoor unit.
*2 “FAN”cannot set to heat pump type.
To Set the Room temperature
Press the SET TEMP. button.
button: Press to raise the thermostat setting.
button: Press to lower the thermostat setting.
●Thermostat setting range:
AUTO .................................. 18-30 °C
Heating ............................... 16-30 °C
Cooling/Dry ........................ 18-30 °C
The thermostat cannot be used to set room temperature during the FAN mode (the
temperature will not appear on the Remote Control Unit’s Display).
About three seconds later, the entire display will reappear.
The thermostat setting should be considered a standard value, and may differ
somewhat from the actual room temperature.
To Set the Fan Speed
Press the FAN button.
Each time the button is pressed, the fan speed changes in the following order:
AUTO HIGH MED LOW
About three seconds later, the entire display will reappear.
When set to AUTO:
Heating: Fan operates so as to optimally circulate warmed air.
However, the fan will operate at very low speed when the temperature
of the air issued from the indoor unit is low.
Cooling: As the room temperature approaches that of the thermostat setting,
the fan speed becomes slower.
Fan: The fan runs at the low fan speed.
The fan will operate at a very low setting during Monitor operation and at the start
of the Heating mode.
OPERATION
s
t
Example: When set to COOL.
Example: When set to 26 °C.
Example: When set to AUTO.
*1
*2
ssss
s s
t
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To Stop Operation
Press the START/STOP button.
The OPERATION Indicator Lamp (green) will go out.
About AUTO CHANGEOVER Operation
AUTO: ●When AUTO CHANGEOVER operation first selected, the fan will ope-
rate at very low speed for about one minute, during which time the
unit detects the room conditions and selects the proper operating mode.
If the difference between thermostat setting and actual room tempera-
ture 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 tempera-
ture is within ±2 °C
→Monitor operation
If the difference between thermostat setting and actual room tempera-
ture is more than –2 °C
→Heating operation
(Monitor operation may be selected if the outdoor temperature is
high.)
●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 tem-
perature subsequently changes, the air conditioner will once again
select the appropriate operation (Heating, Cooling) to adjust the tem-
perature to the value set in the thermostat.
(The monitor operation range is ±2 °C relative to the thermostat set-
ting.)
●If the mode automatically selected by the unit is not what you wish,
select one of the mode operation (HEAT, COOL, DRY, FAN).
About Mode Operation
Heating: ●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 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 OPERATION Indica-
tor Lamp (green) will flash, and the heat operation will be interrupted.
●After the start of heating operation, it takes some time before the room
gets warmer.
Cooling: ●Use to cool your room.
Dry: ●Use for gently cooling while dehumidifying your room.
●You cannot heat the room during Dry mode.
●During Dry mode, the unit will operate at low speed; in order to adjust
room humidity, the indoor unit’s fan may stop from time to time. Also,
the fan may operate at very low speed when adjusting room humidity.
●The fan speed cannot be changed manually when Dry mode has been
selected.
Fan: ●Use to circulate the air throughout your room.
During Heating mode:
Set the thermostat to a temperature set-
ting 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 set-
ting 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 oper-
ate).
During Fan mode:
You can not use the unit to heat and cool
your room.
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TIMER OPERATION
sss
t
To Cancel the Timer
Use the TIMER MODE button to select
“CANCEL”.
The air conditioner will return to normal
operation.
To Change the Timer Settings
Perform steps 2and 3.
To Stop Air Conditioner Operation
while the Timer is Operating
Press the START/STOP button.
To Change Operating Conditions
If you wish to change operating conditions
(Mode, Fan Speed, Thermostat Setting), af-
ter making the timer setting wait until the
entire display reappears, then press the ap-
propriate buttons to change the operating
condition desired.
To Cancel the Timer
Use the TIMER MODE button to select
“CANCEL”.
The air conditioner will return to normal
operation.
To Change the Timer Settings
1.
Follow the instructions given in the section
“To Use the ON Timer or OFF Timer”to
select the timer setting you wish to change.
2. Press the TIMER MODE button to select
either OFF ON or OFF ON.
To Stop Air Conditioner Operation
while the Timer is Operating
Press the START/STOP button.
To Change Operating Conditions
If you wish to change operating conditions
(Mode, Fan Speed, Thermostat Setting), af-
ter making the timer setting wait until the
entire display reappears, then press the ap-
propriate buttons to change the operating
condition desired.
To Use the ON timer or OFF timer
1Press the START/STOP button
(if the unit is already operating, proceed to step 2).
The receiver unit control panel’s OPERATION Indicator Lamp (green) will
light.
2Press the TIMER MODE button to select the OFF timer
or ON timer operation.
Each time the button is pressed the timer function changes in the follow-
ing order:
CANCEL OFF ON
PROGRAM (OFF →ON, OFF ←ON)
The receiver unit control panel’s TIMER Indicator Lamp (orange) will light.
3Use the TIMER SET buttons to adjust the desired OFF
time or ON time.
Set the time while the time display is flashing (the flashing will continue
for about five seconds).
button: Press to advance the time.
button: Press to reverse the time.
About five seconds later, the entire display will reappear.
To Use the Program timer
1Press the START/STOP button
(if the unit is already operating, proceed to step 2).
The receiver unit control panel’s OPERATION Indicator Lamp (green) will
light.
2Set the desired times for OFF timer and ON timer.
See the section “To Use the ON timer or OFF timer”to set the desired
mode and times.
About five seconds later, the entire display will reappear.
The receiver unit control panel’s TIMER Indicator Lamp (orange) will light.
3Press the TIMER MODE button to select the PROGRAM
timer operation (OFF ON or OFF ON will display).
The display will alternately show “OFF timer”and “ON timer”, then change
to show the time setting for the operation to occur first.
●The program timer will begin operation. (If the ON timer has been se-
lected to operate first, the unit will stop operating at this point.)
About five seconds later, the entire display will reappear.
About the Program timer
●The program timer allows you to integrate OFF timer and ON timer operations in
a single sequence. The sequence can involve one transition from OFF timer to
ON timer, or from ON timer to OFF timer, within a twenty-four hour period.
●The first timer function to operate will be the one set nearest to the current time.
The order of operation is indicated by the arrow in the Remote Control Unit’s
Display (OFF →ON, or OFF ←ON).
●One example of Program timer use might be to have the air conditioner auto-
matically stop (OFF timer) after you go to sleep, then start (ON timer) automati-
cally in the morning before you arise.
Before using the timer function, be sure that the Remote Control Unit is set to the correct current time (☞P. 4).
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Unlike other timer functions, the SLEEP timer is used to set the length of time until air conditioner operate is stopped.
To Use the SLEEP Timer
While the air conditioner is operating or stopped, press the
SLEEP button.
The receiver unit control panel’s OPERATION Indicator Lamp (green) lights and the
TIMER Indicator Lamp (orange) light.
To Change the Timer Settings
Press the SLEEP button once again and set the time using the
TIMER SET ( / ) buttons.
button: Press to advance the time.
button: Press to reverse the time.
About five seconds later, the entire display will reappear.
To Cancel the Timer:
Use the TIMER MODE button to select
“CANCEL”.
The air conditioner will return to normal
operation.
To Stop the Air Conditioner During
Timer Operation:
Press the START/STOP button.
About the SLEEP Timer
To prevent excessive warming or cooling during sleep, the SLEEP timer function automatically modifies the thermostat setting
in accordance with the set time setting. When the set time has elapsed, the air conditioner completely stops.
Based on temperature set in remote control unit, temperature of indoor unit varies little by little. However in this case, tem-
perature indication of remote control unit does not vary as it continues to indicate the temperature when SLEEP Timer was set.
SLEEP TIMER OPERATION
Set time
1 hour
1 °C2 °C
2 °C3 °C4 °C
30
minutes
1 °C
1 hour
1 hour
30 minutes
Set time
During Cooling/Dry operation (Indoor unit):
When the SLEEP timer is set, the thermostat setting is auto-
matically raised 1 °C every 1 hour. When the thermostat has
been raised a total of 2 °C, the thermostat setting at that time
is maintained until the set time has elapsed, at which time the
air conditioner automatically turns off.
SLEEP timer setting
During Heating operation (Indoor unit):
When the SLEEP timer is set, the thermostat setting is
automatically lowered 1 °C every thirty minutes. When the
thermostat has been lowered a total of 4 °C, the thermostat
setting at that time is maintained until the set time has elapsed,
at which time the air conditioner automatically turns off.
SLEEP timer setting
MANUAL AUTO OPERATION
Use the MANUAL AUTO operation in the event the remote control unit is lost or otherwise unavailable.
How To Use the Main Unit Controls
Press the MANUAL AUTO button on the receiver unit control
panel.
To stop operation, press the MANUAL AUTO button once again.
●When the air conditioner is operated
with the controls on the receiver unit,
it will operate under the same mode
as the AUTO mode selected on the re-
mote control unit.
However, about Multi-type Air condi-
tioner, the Heat pump model will fol-
low the operating mode of the other
indoor unit.
●The fan speed selected will be “AUTO”
and the thermostat setting will be
24 °C.
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ECONOMY OPERATION
Begin Air Conditioner operation before performing this procedure.
To Use the ECONOMY Operation
Press the ECONOMY button.
“ECO”appears on the Remote Control Unit display.
Economy operation begins.
To Stop the ECONOMY Operation
Press the ECONOMY button again.
“ECO”disappears from the Remote Control Unit display.
Normal operation begins.
About ECONOMY Operation
Economy operation can be set by remote controller.
The temperature setting is offset automatically over a certain period of time.
Based on temperature set in remote control unit, temperature of indoor unit varies little by little. However in this case, tem-
perature indication of remote control unit does not vary as it continues to indicate the temperature when ECONOMY Opera-
tion was set.
FILTER RESET
Save temperature
Cooling set temperature
Heating set temperature
Save temperature
30 60 900
°C
1
1
2
2
3
4
0
0
Min.
ECONOMY operation
Start
When cleaning the air filter of the indoor unit, reset the display that indicates the schedule for filter cleaning.
To Use the FILTER RESET Button
Press the FILTER RESET button.
Cooling
Operation
Heating
Operation
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When two or more air conditioners are installed in a room and the remote control unit is operating an air conditioner other
than the one you wish to set, change the signal code of the remote control unit to operate only the air conditioner you wish to
set (four selections possible).
When two or more air conditioners are installed in a room, please contact authorized service personnel to set the individual air
conditioner signal codes.
SELECTING THE REMOTE CONTROL UNIT SIGNAL CODE
Selecting the Remote Control Unit Signal Code
Use the following steps to select the signal code of the remote control unit. (Note
that the air conditioner cannot receive a signal code if the air conditioner has not
been set for the signal code.)
1Press the START/STOP button until only the clock is
displayed on the remote control unit display.
2Press the MODE button for at least five seconds to dis-
play the current signal code (initially set to ).
3Press the SET TEMP. ( / ) buttons to change the
signal code between . Match the code on the
display to the air conditioner signal code.
4Press the MODE button again to return to the clock
display. The signal code will be changed.
If no buttons are pressed within 30 seconds after the signal code is displayed, the system returns to the original clock
display. In this case, start again from step 1.
The air conditioner signal code is set to A prior to shipment. Contact authorized service personnel to change the signal code.
The remote control unit resets to signal code A when the batteries in the remote control unit are replaced. If you use a
signal code other than signal code A, reset the signal code after replacing the batteries.
If you do not know the air conditioner signal code setting, try each of the signal codes ( ) until you find the
code which operates the air conditioner.
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OPERATING TIPS
*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 recom-
mend you use this air conditioner in conjunction with
another kind of heating appliance.
●Heat-pump air conditioners heat your entire room by
recirculating air throughout the room, with the result that
some time may be required after first starting the air con-
ditioner 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.
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.
Dry: The fan runs at the low fan speed.
*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 per-
formance.
In order to prevent this kind of reduced performance, this
unit is equipped with a Microcomputer-controlled Auto-
matic Defrosting function. If frost forms, the air condi-
tioner will temporarily stop, and the defrosting circuit will
operate briefly (for about 4 to 15 minutes).
During Automatic Defrosting operation, the OPERATION
indicator lamp (green) will flash.
Low Ambient Cooling
●When the outdoor temperature drops, the outdoor unit’s
fans may switch to Low Speed.
*Hot start (for heating)
●The indoor unit prevents cold drafts when heating opera-
tion 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.
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL”.
HEAT & COOL MODEL
Auto changeover function
●When AUTO CHANGEOVER is selected, the air conditioner
selects the appropriate operation mode (Cooling or Heat-
ing) according to your room’s present temperature.
●When AUTO CHANGEOVER is first 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 tem-
perature 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 tem-
perature is high.)
Mode operation: AUTO
COOLING MODEL
●When the room temperature is 2 °C higher than the set
temperature, the mode will switch between Cooling and
Drying.
●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 moni-
tor operation range is ±2 °C relative to the thermostat
setting.)
●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.
●Remote control unit may not be available depending on the functions, while local operation with a standard remote
control unit, including a wireless remote control unit, is prohibited.
●Display of operating condition on the indoor unit and this unit may differ while indoor unit is operated with the RC
Prohibition control.
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During Heating mode:
Set the thermostat to a temperature set-
ting 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 set-
ting 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 ope-
rate).
During Fan mode:
You can not use the unit to heat and cool
your room.
About Mode Operation
*Heating: ●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 OPERATION in-
dicator Lamp (green) will flash, and the heat operation will be inter-
rupted.
●After the start of heating operation, it takes sometime before the room
gets warmer.
Cooling: ●Use to cool your room.
Dry: ●Use for gently cooling while dehumidifying your room.
●You cannot heat the room during Dry mode.
●During Dry mode, the unit will operate at low speed; in order to ad-
just room humidity, the indoor unit’s fan may stop from time to time.
Also, the fan may operate at very low speed when adjusting room
humidity.
●The fan speed cannot be changed manually when Dry mode has been
selected.
Fan: ●Use to circulate the air throughout your room.
●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.
●Should a power failure occur during TIMER operation,
the timer will be reset and the unit will begin (or stop)
operating under the new timer setting. In this event, the
TIMER indicator lamp (orange) will flash.
●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 plug, reconnect it, and then
use the remote control unit to resume operation.
AUTO Restart
In Event of Power Interruption
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TROUBLESHOOTING
Symptom
Doesn’t operate imme-
diately:
Noise is heard:
Smells:
Mist or steam are
emitted:
Airflow is weak or stops:
Water is produced from
the outdoor unit:
Problem
●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.
●Whenever the power supply plug is disconnected and then recon-
nected to a power outlet, the protection circuit will operate for about
3 minutes, preventing unit operation during that period.
●During operation and immediately after stopping the unit, the
sound of water flowing in the air conditioner’s piping may be
heard. Also, noise may be particularly noticeable for about 2 to 3
minutes after starting operation (sound of coolant flowing).
●During operation, a slight squeaking sound may be heard. This is
the result of minute expansion and contraction of the front cover
due to temperature changes.
*●During Heating operation, a sizzling sound may be heard occa-
sionally. This sound is produced by the Automatic Defrosting
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 emitted
from the indoor unit. This results from the sudden Cooling of
room air by the air emitted from the air conditioner, resulting in
condensation and misting.
*●During Heating operation, the outdoor unit’s fan may stop, and
steam may be seen rising from the unit. This is due to the Auto-
matic 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, the OPERA-
TION indicator lamp (green) will flash.
●The fan may operate at very low speed during Dry operation or
when the unit is monitoring the room’s temperature.
●In the monitor AUTO operation, the fan will operate at very low
speed.
*●During Heating operation, water may be produced from the out-
door unit due to the Automatic Defrosting operation.
See page
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—
12
—
—
12
—
12
—
—
12
NORMAL
FUNCTION
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL”.
Before requesting service, perform the following checks:
WARNING
In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect the power
supply plug or turn off the circuit breaker, and consult authorized service personnel.
Merely turning off the unitís power switch will not completely disconnect the unit from the power
source. Always be sure to disconnect the power supply plug or turn off your circuit breaker to ensure
that power is completely off.
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SPECIFICATIONS
REMOTE CONTROLLER (WIRELESS TYPE)
MODEL POWER DIMENSIONS & WEIGHT
HEIGHT WIDTH DEPTH WEIGHT
UTY-LNH
DC 3 V 170 mm 56 mm 19 mm 85 g (w/o batteries)
Symptom
Doesn’t operate at all:
Poor Cooling (or *Heating)
performance:
The unit operates differ-
ently from the remote con-
trol unit’s setting:
Signal is not received
after replacing the
batteries for the remote
control unit:
Problem
●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 filter dirty?
●Are the air conditioner’s intake grille or outlet port blocked?
●Did you adjust the room temperature settings (thermostat) cor-
rectly?
●Is there a window or door open?
●In the case of Cooling operation, is a window allowing bright sun-
light to enter? (Close the curtains.)
●In the case of Cooling operation, are there heating apparatus and
computers inside the room, or are there too many people in the
room?
●Are the remote control unit’s batteries dead?
●Are the remote control unit’s batteries loaded properly?
●Are you using an air conditioner signal code other than signal
code A?
See page
—
7 to 8
—
4
10
CHECK ONCE
MORE
If the problem persists after performing these checks, or if you notice burning smells, or the TIMER indicator lamp (orange)
and OPERATION indicator lamp (green) flashes, stop operation immediately, disconnect the power supply plug, and consult
with authorized service personnel.
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL”.
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