AirStage UTY-LNH series User manual

P/N9379143004-06
OPERATING MANUAL
AIR CONDITIONER
Remote Controller
UTY-LNH
WIRELESS REMOTE CONTROLLER
TM
OPERATING MANUAL
KEEP THIS MANUAL FOR FUTURE REFERENCE
FUJITSU GENERAL LIMITED
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CONTENTS
SAFETY PRECAUTIONS
• The “SAFETY PRECAUTIONS” indicated in this operating manual contain important information pertaining to your safety.
Be sure to observe them.
• For details of the operation methods, refer to this manual.
• Request the user to keep the manual 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.
• 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 measures
so that they cannot reach the unit.
• Do not repair or modify by yourself. It may cause failure 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.
CAUTION This mark indicates procedures which, if improperly performed, might possibly result in per-
sonal harm to the user or damage to property.
• Do not disassemble the unit. Contact with internal circuitry
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 malfunction. 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 m of this unit. It may
cause malfunction or failure.
• Do not use fire near this unit or place a heating apparatus
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 dispose
of the plastic packing bags so that children cannot 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 directly at
the unit. Doing so may result in fire or explosion.
• 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 electric
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 significantly or give
damage to the component parts.
SAFETY PRECAUTIONS................................................ 1
FEATURES AND FUNCTIONS ....................................... 2
NAME OF PARTS ........................................................... 3
PREPARATION ............................................................... 4
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
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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 temperature setting and
the actual temperature of the room.
●HEAT PUMP 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 temperature
setting and the actual temperature of the room.
SLEEP TIMER
●COOLING MODEL
When the “SLEEP” button is pressed during Cooling or Dry
mode, the temperature setting is gradually raised during the
period of operation. When the set time is reached, the unit
automatically turns off.
●HEAT PUMP MODEL
When the “SLEEP” button is pressed during Heating mode,
the air conditioner’s temperature setting is gradually lowered
during the period of operation; during Cooling or Dry mode,
the temperature setting is gradually raised during the period
of operation. When the set time is reached, the unit automati-
cally 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 actual opera-
tion, however, the display will only show those indicators
appropriate to the current operation.
1“MODE” button
2“ECONOMY” button
3“ SET TEMP. / SET TEMP. ” button
4“FILTER RESET” button
5“SLEEP” button
6“FAN” button
7“START/STOP” button
8“ SET” button (Vertical)
9“ SET” button (Horizontal)
0“ SWING” button
A“TIMER MODE” button
B“TIMER / TIMER ” button
C“CLOCK ADJUST” button
D“RESET” button
E“TEST RUN” button
This is used during test run. 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 re-
ceived, 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 (AAA/LR03/R03 x 2)
1Press and slide the battery compartment lid on the
reverse 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 / TIMER ” button 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 1
minute increments; hold the buttons depressed to change the time quickly in
10 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 alkaline
liquid to leak and possibly enter your eyes
or cause the batteries to explode or heat
up, resulting in personal injuries, burning
or mechanical breakdowns.
●If strong alkaline liquid comes in contact
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 direc-
tion.
●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 accidentally
swallowing batteries.
When not using the unit for an extended pe-
riod, remove the batteries to avoid possible
leakage and damage to the unit.
Dead batteries should be removed imme-
diately and disposed of properly, either in
a battery collection receptacle or to the ap-
propriate 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.
X
W
X X
W
AUTO *1 COOL DRY
FAN *2
HEAT
About 3 seconds later, the entire display will reappear.
*1 “AUTO” can be set only in the indoor unit assigned to the representative
indoor unit.
*2 “FAN” cannot set to heat pump type.
To Set the Room temperature
Press the “ SET TEMP. / SET TEMP. ” button.
button: Press to raise the temperature setting.
button: Press to lower the temperature setting.
●Temperature setting range:
AUTO ....................................18-30 °C
Heating..................................16-30 °C
Cooling/Dry ...........................18-30 °C
The temperature setting cannot be used to set room temperature during the FAN mode
(the temperature will not appear on the Remote Control Unit’s Display).
About 3 seconds later, the entire display will reappear.
The temperature 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 3 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 temperature 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
Example: When set to COOL.
Example: When set to 26 °C.
Example: When set to AUTO.
XXXX
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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 1 minute, during which time the unit detects the
room conditions and selects the proper operating mode.
Room temperature is higher than the defined temperature in temperature
setting →Cooling mode or Dry mode
Room temperature is close to the defined temperature in temperature
setting →Determined by outdoor temperature
Room temperature is lower than the defined temperature in temperature
setting →Heating mode
●When the air conditioner has adjusted your room’s temperature to near the
temperature setting, it will begin monitor operation. In the monitor operation
mode, the fan will operate at low speed. If the room temperature subsequently
changes, the air conditioner will once again select the appropriate operation
(Heating, Cooling) to adjust the temperature to the value set in the indoor
unit.
(The monitor operation range is ±2 °C relative to the temperature
setting.)
●If the mode automatically selected by the unit is not what you wish, select
1 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 Indicator 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 temperature to a temperature setting
that is higher than the current room tempera-
ture. The Heating mode will not operate if
the preset temperature is set lower than the
actual room temperature.
During Cooling/Dry mode:
Set the temperature to a temperature setting
that is lower than the current room tempera-
ture. The Cooling and Dry modes will not op-
erate if the preset temperature 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.
Defined temper-
ature in tem-
perature setting
Cooling or Dry
Determined by out-
door temperature
Heating
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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 following
order:
CANCEL OFF ON
PROGRAM (OFF →ON, OFF ←ON)
The receiver unit control panel’s TIMER Indicator Lamp (orange) will light.
3Use the “TIMER / TIMER ” button to adjust the
desired OFF time or ON time.
Set the time while the time display is flashing (the flashing will continue for
about 5 seconds).
button: Press to advance the time.
button: Press to reverse the time.
About 5 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 5 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 PRO-
GRAM 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 selected
to operate first, the unit will stop operating at this point.)
About 5 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 1 transition from OFF timer to ON timer,
or from ON timer to OFF timer, within a 24 hour period.
●The first timer function to operate will be the 1 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 automatically
stop (OFF timer) after you go to sleep, then start (ON timer) automatically in the morn-
ing before you arise.
TIMER OPERATION
X
XX
W
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, Temperature Setting), after
making the timer setting wait until the entire
display reappears, then press the appropri-
ate 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, Temperature Setting), after
making the timer setting wait until the entire
display reappears, then press the appropri-
ate buttons to change the operating condition
desired.
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 / TIMER ” button.
button: Press to advance the time.
button: Press to reverse the time.
About 5 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 temperature setting in ac-
cordance 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, temperature
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 °C 2 °C
2 °C 3 °C 4 °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 temperature setting is automati-
cally raised 1 °C every 1 hour. When the preset temperature has
been raised a total of 2 °C, the temperature 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 temperature setting is
automatically lowered 1 °C every 30 minutes. When the preset
temperature has been lowered a total of 4 °C, the temperature
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 remote
control unit.
However, about Multi-type Air conditioner,
the Heat pump model will follow the op-
erating mode of the other indoor unit.
●The fan speed selected will be “AUTO”
and the temperature 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, temperature
indication of remote control unit does not vary as it continues to indicate the temperature when ECONOMY Operation 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 Operation
Press the “FILTER RESET” button.
Cooling
Operation
Heating
Operation
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When 2 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 (4 selections pos-
sible).
When 2 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 5 seconds to dis-
play the current signal code (initially set to ).
3Press the “ SET TEMP. / SET TEMP. ” button 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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*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 Defrost-
ing function. If frost forms, the air conditioner 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 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 tempera-
ture.
*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 insufficient
heating performance is being produced, we recommend you
use this air conditioner in conjunction with another kind of
heating appliance.
●Heat-pump air conditioners heat your entire room by recircu-
lating air throughout the room, with the result that some time
may be required after first 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.
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.
OPERATING TIPS
Instructions relating to heating (*) are applicable only to “HEAT PUMP MODEL”.
HEAT PUMP MODEL
Auto changeover function
●When AUTO CHANGEOVER is selected, the air conditioner
selects the appropriate operation mode (Cooling or Heating)
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.
Room temperature is higher than the defined temperature in
temperature setting →Cooling mode or Dry mode
Room temperature is close to the defined temperature in
temperature setting →Determined by outdoor temperature
Room temperature is lower than the defined temperature in
temperature setting →Heating mode
Mode operation: AUTO
COOLING MODEL
●When the room temperature is higher than the defined tem-
perature in temperature setting, the mode will switch between
Cooling and Drying.
●When the room temperature is near the temperature setting,
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
indoor unit. (The monitor operation range is ±2 °C relative to
the temperature 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.
Defined temper-
ature in tem-
perature setting
Cooling or Dry
Determined by out-
door temperature
Heating
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During Heating mode:
Set the temperature to a temperature setting
that is higher than the current room tempera-
ture. The Heating mode will not operate if
the preset temperature is set lower than the
actual room temperature.
During Cooling/Dry mode:
Set the temperature to a temperature setting
that is lower than the current room tempera-
ture. The Cooling and Dry modes will not op-
erate if the preset temperature 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.
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 indicator Lamp (green)
will flash, and the heat operation will be interrupted.
●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 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.
●Should the power supply to the air conditioner be interrupted
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 discon-
nect 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
Instructions relating to heating (*) are applicable only to “HEAT PUMP MODEL”.
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 unit’s 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.
Before requesting service, perform the following checks:
Symptom Problem See Page
NORMAL
FUNCTION
Doesn’t operate
immediately:
●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.
—
Noise is heard: ●During operation and immediately after stopping the unit, the sound
of water flowing in the air conditioner’s piping may be heard. Also,
noise may be particularly noticeable for about 2 to 3 minutes after
starting operation (sound of coolant flowing).
●During operation, a slight squeaking sound may be heard. This is
the result of minute expansion and contraction of the front cover
due to temperature changes.
—
*● During Heating operation, a sizzling sound may be heard occasion-
ally. This sound is produced by the Automatic Defrosting opera-
tion.
12
Smells: ●Some smell may be emitted from the indoor unit. This smell is the
result of room smells (furniture, tobacco, etc.) which have been
taken into the air conditioner.
—
Mist or steam are
emitted:
●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 Automatic
Defrosting operation.
12
Airflow is weak or
stops:
*● When Heating operation is started, fan speed is temporarily very
low, to allow internal parts to warm up.
*● During Heating operation, if the room temperature rises above
the temperature setting, the fan of indoor unit starts and stops.
If you wish to warm the room further, set the preset temperature to
a higher setting.
—
*● During Heating operation, the unit will temporarily stop operation
(between 4 and 15 minutes) as the Automatic Defrosting mode oper-
ates. During the Automatic Defrosting operation, the OPERATION
indicator lamp (green) will flash.
12
●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. —
Water is produced
from the outdoor
unit:
*● During Heating operation, water may be produced from the outdoor
unit due to the Automatic Defrosting operation. 18
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SPECIFICATIONS
Instructions relating to heating (*) are applicable only to “HEAT PUMP MODEL”.
Symptom Items to check See Page
CHECK ONCE
MORE
Doesn’t operate at all: ●Has the circuit breaker been turned off?
●Has there been a power failure?
●Has a fuse blown out, or a circuit breaker been tripped?
—
Poor Cooling (or Heating)
performance:
●Is the timer operating? 7 to 8
●Is the air filter dirty?
●Are the air conditioner’s intake grille or outlet port blocked?
●Did you adjust the room temperature settings 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?
—
The unit operates different-
ly from the remote control
unit’s setting:
●Are the remote control unit’s batteries dead?
●Are the remote control unit’s batteries loaded properly? 4
Signal is not received after
replacing the batteries for
the remote control unit:
●Are you using an air conditioner signal code other than signal code A? 10
If the problem persists after performing these checks, or if you notice burning smells, or the TIMER indicator lamp (orange) and OP-
ERATION indicator lamp (green) flashes, stop operation immediately, disconnect the power supply plug, and consult with authorized
service personnel.
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)
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