AIR CONDITIONER (SPLIT TYPE)
Owner’s Manual
Indoor Unit
Model name:
4-way Air Discharge Cassette Type
RAV-SP180UT-UL
RAV-SP240UT-UL
RAV-SP300UT-UL
RAV-SP360UT-UL
RAV-SP420UT-UL
Owner’s Manual
Air conditioner (Split type)
English
1
Manuel du proprietaire
Climatiseur (Type à deux éléments) 27
Français
Owner’s Manual
4-way Air Discharge Cassette Type
1. PRECAUTIONS FOR SAFETY
WARNING
WARNINGS ABOUT INSTALLATION
• Make sure to ask the qualified installation professional in electric work to install the
air conditioner.
If the air conditioner is inappropriate installed by yourself, it may cause water leak,
electric shock, fire, and so on.
• Be sure to connect ground wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires
for telephone wires.
• If you install the indoor unit in a small room, take appropriate measures to prevent the
refrigerant from exceeding the limit concentration even if it leaks.
Consult the dealer from whom you purchased the air conditioner when you implement
the measures. Accumulation of highly-concentrated refrigerant may cause an oxygen
deficiency accident.
• Check whether the piping work has been properly completed.
When existing pipes are used and if they are not constructed properly, the refrigerant
gas may leak. Contact the installation company and confirm that the piping work has
been properly completed. For details of installation of the air conditioner, refer to the
Installation Manual. Use tools and piping materials for R410 only. Failure to do so or
improper installation may cause a burst of pipe, resulting in injury.
WARNINGS ABOUT OPERATION
• Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a
service person do it.
The self cleaning function of the air conditioner causes the internal fan to run at a high speed in some modes even while
the air conditioner is not working, which may cause injury.
Do not attempt it yourself.
• Avoid cooling the room too strong or exposing the human body to cool breeze for a long time as it is bad for the health.
• When you notice something abnormal with the air conditioner (smells like something scorching, poor cooling, etc.),
immediately turn off the main switch and the circuit breaker, from the mains to stop the air conditioner, and contact
the dealer.
If the air conditioner is continuously operated with something abnormal, it may cause machine failure, electric shock,
fire, and so on.
WARNINGS ABOUT MOVEMENT AND REPAIR
• When the air conditioner cannot cool or heat a room well, contact the dealer from whom you purchased the air
conditioner as refrigerant leakage is considered as the cause. In the case of repair that requires refill of refrigerant,
ask service personnel about details of the repair.
The refrigerant used in the air conditioner is harmless.
Generally, the refrigerant does not leak. However, if the refrigerant leaks in a room and a heater or stove burner in
the room catches fire, it may generate toxic gas.
When you ask service personnel for repairing refrigerant leakage, confirm that the leakage portion has been
completely repaired.
• Do not move or repair any unit by yourself.
Since there is high voltage inside the unit, you may get electric shock when removing the cover and main unit.
• Whenever the air conditioner needs repair, make sure to ask the dealer to do it.
If it is repaired imperfectly, it may cause electric shock or fire.
• When moving the air conditioner for re-installing at another place, ask the dealer to do it. If it is imperfectly installed,
it may cause electric shock or fire.
EN
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Owner’s Manual
4-way Air Discharge Cassette Type
CAUTION
CAUTIONS ABOUT INSTALLATION (Be sure to confirm the following cautions.)
• Use an exclusive power circuit for the air conditioner. Use the rated voltage.
• Certainly lay the drain hose for perfect draining.
Bad drainage may cause flooding in the house and getting furniture wet.
• Make sure to connect the air conditioner to an exclusive power supply of the rated
voltage, otherwise the unit may break down or cause a fire.
• Do not install the unit in a place where inflammable gas may leak.
If inflammable gas accumulates around the unit, it may cause a fire.
CAUTIONS ABOUT OPERATION
• Carefully read this manual before starting the air conditioner.
There are many important things to keep in mind for daily operation.
• Do not use this air conditioner for special purpose such as preserving food, precision
instruments, art objects, breeding animals, car, vessel, etc.
• When the air conditioner is operated with a combustion appliance in the same place, be
careful of ventilation to let fresh air enter the room.
Poor ventilation causes oxygen shortage.
• Do not place any combustion appliance in a place where it is directly exposed to the wind
of air conditioner, otherwise it may cause imperfect combustion.
• When the air conditioner is used in a closed room, be careful of sufficient ventilation of the room.
Poor ventilation causes oxygen shortage.
• Do not touch any switches with wet fingers. You may get an electric shock.
• If the air conditioner won’t be used for a long time, turn off the main switch or the circuit breaker, for safety.
• Do not put anything on the outdoor unit or step on it.
If you do, the unit may topple over or you may get injured.
• To make the air conditioner operate in its original performance, operate it within the range of the operating
temperature specified in the instructions.
Otherwise it may cause a malfunction, or water leak from the unit.
• Do not expose the remote control to any liquid.
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Owner’s Manual
4-way Air Discharge Cassette Type
2. SYSTEM CHARACTERISTICS
Air conditioner operating conditions
For proper performance, operate the air conditioner under the following temperature conditions:
Outdoor temperature
Room temperature
: 23 °F to 109.4 °F (-5 °C to 43 °C) *
69.8 °F to 89.6 °F (21 °C to 32 °C) (Dry bulb temperature),
59 °F to 75.2 °F (15 °C to 24 °C) (Wet bulb temperature)
:
Cooling operation
Room relative humidity – less than 80 %. If the air conditioner operates in excess of
this figure, condensation may occurs on the surface of the air conditioner.
[CAUTION]
Outdoor temperature
Room temperature
Outdoor temperature
Room temperature
: 59 °F to 109.4 °F (15 °C to 43 °C)
Dry operation
: 62.6 °F to 89.6 °F (17 °C to 32 °C)
: -4 °F to 59 °F (-20 °C to 15 °C) (Wet bulb temperature)
: 59 °F to 86 °F (15 °C to 30 °C) (Dry bulb temperature)
Heating operation
*: The air conditioner can be operate when outside temperature is 5°F to 23°F (-15°C to -5°C). Installing wind
baffle to the outdoor unit is necessary to operate the air conditioner in that outside temperature range.
For further details, refer to the installation manual of the outdoor unit.
If air conditioner is used outside of the above conditions, safety protection may work.
3 minute protection function
There is a 3-minute time delay between compressor starts.
Auto restart
The unit will stop after a power failure.
• The unit will restart automatically in the same operating mode as before the power failure when the power is
restored.
Fan operation
Heating
• When there is a call for heating, the fan will not start right away. There is a delay of approximately 5 minutes to
ensure that the indoor heat exchanger warmed up.
• When the room temperature reaches the set temperature, the fan will run at ultra low speed to avoid blowing cold
air on the occupants in the space.
Cooling
When the room temperature reaches the set temperature, the fan will run at ultra low speed.
Defrost
When the unit is operating in the heating mode frost forms on the outdoor heat exchanger.
When this occurs, defrost is initiated automatically. During the defrost period (2 to 10 minutes) both the indoor and
outdoor units stop running.
• A hissing noise might be heard when the defrost cycle is initiated.
• During the defrosting operation, the defrosted water will be drained from the bottom plate of the outdoor unit.
Heating capacity
In the heating operation, the heat is absorbed from the outside and brought into the room. This way of heating is
called heat pump system. When the outside temperature is too low, it is recommended to use another heating
apparatus in combination with the air conditioner.
Attention to snowfall and freeze on the outdoor unit
• In snowy areas, the air inlet and air outlet of the outdoor unit are often covered with snow or frozen up.
If snow or freeze on the outdoor unit is left as it is, it may cause machine failure or poor warming.
EN
• In cold areas, pay attention to the drain hose so that it perfectly drains water without water remaining inside for
freeze prevention. If water freezes in the drain hose or inside the outdoor unit, it may cause machine failure or
poor warming.
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Owner’s Manual
4-way Air Discharge Cassette Type
3. ENERGY SAVING RECOMMENDATIONS
Select a comfortable set point and minimize adjusting it.
• Clean the filter when ever the filter display
remote control.
• Keep doors and windows closed and open them only when
necessary.
is illuminated on
Clean, please.
• Use drapes, curtains, or shades to keep direct sun light from heating
the room on very hot days.
• Do not obstruct the return air grille.
• Adjust the air flow direction for even air distribution in the room.
Checks before operating
• Check whether the ground wires are properly connected.
• Check whether the air filters are installed.
• Turn on the circuit breaker the initial startup or after an extended shut
down.
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Owner’s Manual
4-way Air Discharge Cassette Type
4. PART NAMES
„Indoor unit
Knob
Ground screw
Knob to open/close the
return air grille.
Provided in the electric parts box.
Discharge louver
Controls discharge air
directions
Air filter
Return air grill
Part sold separately
Remote control
Latch of air
filter
„Outdoor unit
Air intake (Side and rear)
Front panel
There is a ground screw, valves
and electric parts inside.
Air Discharge
EN
Pipe cover
Conduit connection holes
Mounting leg
* The image of the outdoor unit in the figure is in the case Model RAV-SP420AT2-UL.
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Owner’s Manual
4-way Air Discharge Cassette Type
5. WIRED REMOTE CONTROL
This remote control can control the operation of up to 8 indoor units.
The remote control has two sections: The display section and the operation section.
„Display section
In the display below all the icons are shown. When the unit is in operation,
only relevant icons will be displayed.
Pertition line
• When the circuit breaker is turned on the first time,
display part of the remote control.
flashes on the
Display
section
• While this display is flashing, the model is being automatically confirmed.
TEMP.
ON / OFF
Wait till
display has disappeared to use the remote control.
TIMER SET
TIME
FAN
SAVE
MODE
VENT
Operation
section
FILTER
RESET TEST
SET
CL
SWING/FIX
UNIT LOUVER
19
16 17
1 7 8 9
2
3
20
10
4
5
11
12
13
6
21
14
15
18
1
2
3
SETTING display
Displayed during setup of the timer etc..
7
8
9
TEST run display
Displayed during a test run.
Operation mode
The selected operation mode is displayed.
Louver position display
Displays louver position.
Error display
Displayed while the protective device works or a
error occurs.
Swing display
Displayed during up/down movement of the
louver.
4
Timer display
When a malfunction occurs, an error code is
displayed.
10 Set temperature display
The selected set temp. is displayed.
11 Remote control sensor display
Displayed while the sensor of the remote control is
used.
5
6
Timer Mode display
Displays the timer mode.
Filter display
, reminder to clean the air filter.
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Owner’s Manual
4-way Air Discharge Cassette Type
19
16 17
1 7 8 9
2
3
10
20
4
5
11
12
13
6
21
15
18
14
12 Pre-heat display
19 UNIT No. display
Displayed when the heating mode is energized or
defrost cycle is initiated.
Displays the number of the indoor unit selected.
Also displays error code of indoor and outdoor
units
While this indication is displayed, the indoor fan
stops.
13 No function display
20 SET DATA
Displayed when the function requested is not
available on that model.
Displayed during advanced setting.
14 Fan speed display
21 Service display
The selected fan speed mode is displayed.
(AUTO)
(HIGH)
(MED.)
(LOW)
15 Louver Number display.
Louvers can be controlled individually. Displays
which louver is being set.
(exapmle:01, 02, 03, 04)
16 Self cleaning display
Displayed during self cleaning operation to dry the
indoor heat exchanger.
17 Power saving mode display
Limits compressor speed (capacity) to save
energy.
18 Louver lock display
Displayed when louver is locked or there is a
louver-locked unit in the group.
EN
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Owner’s Manual
4-way Air Discharge Cassette Type
„Operation section
Push each button to select a desired operation.
• The control saves commands in memory and after the initial setting, there is no need for any additional settings
unless changes are desired. The air conditioner can be operated by pushing the button.
8
1
9
12
2
10
6
7
4
11
5
3
1
2
3
button
9
button
Selects the desired Fan speed.
When the button is pushed, the operation starts, and
it stops by pushing the button again.
When the operation has stopped, the operation
lamp and all the displays disappear.
button
Use to setup the timer.
button
Use only for service.
(During normal operation, do not use this button.)
10
11
button
Selects desired operation mode.
button
4
button
Selects a unit number (left) and louver number
(right).
Use when a power ventilation kit (commercially-
supplied) is connected.
” is displayed on the remote control when
pushing the Ventilation button, no vent kit
connected.
UNIT :
• If “
Selects an indoor unit when adjusting louver
direction when multiple indoor units are controlled
with one remote control.
LOUVER :
5
6
7
button
Selects a louver when setting louver lock or louver
direction adjustment independently.
Resets “ ” display after cleaning filter.
button
12
button
Adjusts the set point.
Select the desired set point by pushing TEMP.
Use to initiate power saving mode.
button
or TEMP.
.
Use to select automatic swing or fixed louver
position.
OPTION :
Remote control sensor
Usually the temperature sensor of the indoor unit
senses the temperature. The temperature on the
surrounding of the remote control can also be sensed.
For details, contact the dealer from which you have
purchased the air conditioner.
8
Operation lamp
Green light illuminates when unit is on.
Although it flashes when operating the protection
device or an error occurs.
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Owner’s Manual
4-way Air Discharge Cassette Type
6. CORRECT USAGE
• When you use the air conditioner for the first time or when you change the setting, follow the steps below.
Settings are saved in memory and are displayed anytime the unit is turned on by pushing the
button.
„Preparation
• When the circuit breaker is turned on, the partition lines are displayed on the remote control.
* After the circuit breaker is turned on, the remote control does not accept any commands for approx. 1 minute,
this is not a failure.
REQUIREMENT
• When you re-power the air conditioner after it has not been used for a long period, turn on the circuit breaker at
least 12 hours before starting the air conditioner.
3
Select fan speed with “
One push of the button, and the display changes
in the order shown below.
” button.
HIGH
AUTO
MED.
LOW
.
TEMP.
ON / OFF
1
• When fan is in “
adjusted based on difference between set point
and room temperature.
AUTO”, fan speed is
4
3
TIMER SET
TIME
FAN
SAVE
MODE
VENT
2
FILTER
RESET TEST
• In heating operation, if the room temperature is
SET
CL
SWING/FIX
UNIT LOUVER
not heated sufficiently with volume “
LOW”
HIGH”
operation, select “
operation.
MED.” or “
Start
• The temperature sensor detects the return air
temperature at the indoor unit, which differs
from the room temperature depending on the
installation condition.
1
Push
button.
The operation lamp illuminates, and the operation
starts.
Set point is a target of room temperature.
2
Select an operation mode with the “
button.
One push of the button, and the display changes
in the order shown below.
”
(
“AUTO” is not selectable in the FAN
mode.)
4
Select the set point temperature by pushing
the “TEMP. ” or “TEMP. ” buttons.
AUTO
HEAT
DRY
COOL
FAN
Stop
Push
button.
The operation lamp goes off, and the operation stops.
In the COOL, DRY, or AUTO (cooling) mode, the fan
runs for 10 minutes (or more) for self cleaning.
EN
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Owner’s Manual
4-way Air Discharge Cassette Type
NOTE
Auto Changeover
• When in Auto Mode, the unit selects the operating
mode (cooling, heating or fan only) based on the
user selected set point temperature.
• If the Auto mode is uncomfortable, you can select the
desired conditions manually.
Cooling
• If there is a demand for cooling, unit will start
approximately 1 minute after mode is selected.
Heating
• If there is a demand for heating, unit will start
approximately 3 to 5 minutes after the mode is
selected.
• After the heating operation has stopped, FAN may
continue to run for approx. 30 seconds.
• When the room temperature reaches the set
temperature and the outdoor unit stops, the indoor
unit fan runs at ultra low speed and the outdoor unit
fan runs at low speed.
During defrost operation, the fan stops so that cool air
is not discharged. (“
” Pre-heat is displayed.)
When restarting the operation after stop
• When attempting to restart the unit immediately
after it was stopped, the unit can not start for
approx. 3 minutes this is to protect the compressor.
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Owner’s Manual
4-way Air Discharge Cassette Type
7. TIMER OPERATION
•
Three timer modes are available: (Setting of up to 168 hours is enabled.)
OFF timer
: The unit stops when the set time is reached.
Repeat OFF timer : The unit stops daily when the set time is reached.
ON timer : The unit starts when the set time is reached.
„Timer operation
1
2
4
3
Set
shows 1 day (24 hours).
1
Push
button.
shows 10 hours. (Total 34 hours)
The timer mode changes with every push of the
button.
3
4
Push
•
button.
display disappears and timer time
display goes on, and
flashes.
(When ON timer is activated, timer time, ON
or
display
OFF
OFF
ON
(OFF timer)
(Repeat OFF timer)
No display
(ON timer)
timer
are displayed and other displays
disappear.)
•
and timer display flashes.
Cancel of timer operation
Push button.
Timer display disappears.
NOTE
2
Push
• With every push of
to select “set time”.
button, the set time
increases by 0.5 hr (30 minutes).
When setting a time more than 24 hours for
timer operation, timer can be set in increments
of 1 hr.
The maximum set time is 168hr (7 days).
The remote control displays the set time with
time (between 0.5 and 23.5 hours) (*1) or
number of days and time (24 hours or more) (*2)
as shown below.
• When the operation stops after the timer reached
the preset time, the Repeat OFF timer resumes the
operation by pushing
button and stops the
operation after the time of the timer has reached the
set time.
• When you push
while the OFF timer function
of the air conditioner is active, the indication of the
timer function disappears and then appears again
after about 5 seconds.
• With every push of
decreases by 0.5 hr (30 minutes) (0.5 -
23.5 hours) or 1 hr (24 - 168 hours).
button, the set time
This is due to normal processing of the remote
control.
Example of remote control display
• In the case of 23.5 hours (*1)
EN
• In the case of 34 hours (*2)
Number of days Time
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Owner’s Manual
4-way Air Discharge Cassette Type
8. LOUVER DIRECTION
For best cooling and heating performance, adjust the louvers appropriately. In cooling the louvers should be
directed so that the air discharge is horizontal. In heating they should be directed to discharge towards the floor to
prevent layers of hot air forming close to the ceiling.
CAUTION
Direct the louvers horizontally in cooling.
If the louvers are pointed downward in cooling, condensation may form on the louvers and then drop to the floor.
NOTE
If the louvers are horizontal when in heating, the room temperature may be uneven with hot air near the ceiling.
For cooling
For heating
Direct the louvers downward.
Direct the louvers horizontally.
• When the air conditioner is off, the louvers are directed horizontally automatically.
• In the heating mode, at startup (the first 3 to 5 minutes), during defrost, and after the heating demand is satisfied
(compressor turns off but fan runs at ultra low speed), the louvers are directed horizontally.
If the swing or air direction is set during these periods, the remote control will display the selected option but the
louvers will still be directed horizontally until the unit gets out of the three modes listed above, at which time the
louvers are directed to the set position.
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Owner’s Manual
4-way Air Discharge Cassette Type
Unit select button
1
Set louver direction
Stop swing operation
1
Push
during operation.
1
Push
louver is swinging.
• When is pushed after that, the louver
direction can be set again from the highest
at a desired position while the
The louver direction changes with every push of
the button.
In HEAT operation
Direct the louver downward.
position.
• In COOL/DRY mode, the louver does not stop
as it directs downward. If stopping the louver as
it directs downward during swing operation, it
stops after moving to the third position from the
highest position.
Initial setup
Display when stopping the swing
In COOL/DRY operation
Direct the louver horizontally.
FAN/HEAT
operation
COOL/DRY
operation
Unit select
Initial setup
• When multiple indoor units are controlled with one
remote control, louver position can be set for all
indoor units or each indoor unit individually.
In FAN operation
Select a desired louver direction.
• To set louver direction for a particular unit, push
button to display an indoor unit number in the
control group. Then set the louver direction of the
displayed indoor unit by following the steps outlined
above.
Initial setup
• When no indoor unit number is displayed, all indoor
units in the control group can be controlled
simultaneously.
Start swing operation
Push , set the louver direction to the
lowest position, and then push again.
is displayed and the louvers swing
1
• Each time you push
(left side of the button),
the display changes as follows:
SWING
UNITNo.
1-1
UNIT No.
1-2
UNIT No.
1-3
automatically.
Display during swinging
Not
display
UNIT No.
1-4
Repeat
EN
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Owner’s Manual
4-way Air Discharge Cassette Type
3
Unit select button
2
1
„Set louver direction
03
individually
Refrigerant
pipe
1
Select an indoor unit to be set by pushing
(left side of the button) during
operation.
• The indoor unit number changes each time you
push the button.
04
02
UNIT No.
1-1
UNIT No.
1-2
UNIT No.
1-3
Drain
pipe
Not
display
UNIT No.
1-4
* When no unit number is displayed, all indoor units
are selected.
01
2
Select a louver you want to adjust by
pushing (right side of the button).
• Each time you push the button, the display on
the remote control changes as follows:
3
Determine louver direction of the selected
louver by pushing
• Each time you push the button, the display
changes as follows:
.
Not
display
(1)
(2)
(3)
(4)
* When no louver number is displayed, all four louvers
are selected.
(7)
(6)
(5)
* During COOL (DRY) mode, (4) and (5) are not
displayed.
Louver No.
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Owner’s Manual
4-way Air Discharge Cassette Type
9. POWER SAVING MODE
• The power saving mode saves energy by limiting the maximum current which will effect heating or cooling
capacity that the unit can generate.
Push
• The air conditioner enters power saving mode.
appears on the display.
button during operation.
•
Power saving mode will stay in effect until it is cancelled.
To cancel the power saving mode, push button again.
disappears.
•
NOTE
• Power saving mode consumes less energy, but may not heat/cool the room as much as normal mode. (The
maximum current is limited to approximately 75% (factory default) of the normal mode.)
• This Value can be adjusted between 50% to 99% as outlined in Advanced settings.
• To adjust the power-save settings, see “Change power saving mode setting” in 11 ADVANCED SETTINGS.
• Even when operation start/stop, operation mode change, or power reset is performed during the power saving
mode, the power saving mode is retained until the next operation.
10.SELF CLEANING MODE
This function is provided to dry the inside of the indoor unit by running the FAN mode after the compressor
is stopped when the unit was running the COOL/DRY/AUTO (cooling) mode.
• The self cleaning time is a function of how long the unit ran in the cool or dry modes as shown below.
Cooling/dry/AUTO (cooling) operation time
Less than 10 minutes
self cleaning time
No self cleaning operation
1 hour
10 minutes to less than 1 hour
More than 1 hour
2 hours
• “
” is displayed on the remote control during self cleaning operation.
To stop self cleaning, push
button twice in succession.
CAUTION
• The fan continues to run even after
button is pushed to stop operation in some modes.
This is normal because the self cleaning mode is in progress.
• The louvers open slightly and are directed horizontally during self cleaning, and they close when the self cleaning is
completed.
• The operation lamp (LED) does not light during the self cleaning mode.
• The self cleaning mode cannot clean the room or remove the already existing mold and dust inside the indoor unit.
• To cancel the self cleaning function, consult the dealer.
EN
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Owner’s Manual
4-way Air Discharge Cassette Type
11.ADVANCED SETTINGS
„Swing mode
3
1
2
1
2
Push
for at least four seconds when
03
the air conditioner is not working.
•
, symbol, and numbers flash.
Refrigerant
pipe
Push
(left side of the button) to select
an indoor unit to be set.
• Each time you push the button, the unit numbers
change as follows:
04
02
UNIT No.
1-1
UNIT No.
1-2
UNIT No.
1-3
Drain
pipe
Not
display
UNIT No.
1-4
The fan of the selected unit runs and the louvers
start swinging.
01
3
Push TIME
type.
buttons to select a swing
Three types of swings are available:
• Standard swing
The four louvers swing in the same direction.
• Dual swing
SET DATA
Louvers 01 and 03 are directed and swing in
one direction, and/then louvers 02 and 04 are
directed and swing in the opposite direction.
(When louver 01 is directed downward, louver
02 is directed horizontally.)
SET DATA
0001
Swing of louvers
Standard swing
(Factory default)
0002
0003
Dual swing
Cycle swing
• Cycle swing
The four louvers swing independently at
respective timings.
CAUTION
• Do not set the SET DATA to “0000”.
(This setting may cause a failure of the louvers.)
4
5
Push
Push
button.
button to complete the setting.
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Owner’s Manual
4-way Air Discharge Cassette Type
„Louver lock (No swing)
3
4
2 1
1
2
Push
(right side of the button) for at
CAUTION
least four seconds when the air conditioner
is not working.
•
• If (4) or (5) is selected, condensation may drop from
the unit during operation in cooling mode.
and numbers flash.
Push
(left side of the buttom) to
select an indoor unit to be set.
• Each time you push the button, unit numbers
change as follows:
The fan of the selected unit runs and the louvers
start swinging.
5
Push
button to lock the louver.
• When the setting has been determined,
lights up.
(To continue louver lock settings for other indoor
units, repeat from step 2. To continue louver
lock settings for other louvers on the same
indoor unit, repeat from step 3.)
UNIT No.
1-1
UNIT No.
1-2
UNIT No.
1-3
UNIT No.
1-4
6
Push
button to complete the setting.
3
4
Push TEMP.
number of a louver you want to lock on the
temperature display.
buttons to display the
• The selected louver starts swinging.
0001-0005
(Louver lock position code)
• A louver number is displayed as F1, F2 on the
remote control (SET DATA), showing that louver
01, 02 shown in the figure on the previous page
is selected.
Push TIME
louver direction of the louver you do not
want to swing.
buttons to select the
(1)
0001
(2)
0002
(3)
0003
SET DATA
NOTE
Even when louvers are locked, they move temporarily
in the following cases:
• When the air conditioner is stopped
• At the beginning of heating operation
• During defrosting operation
(4)
0004
(5)
0005
• When the room temperature has reached the set
temperature
EN
18-EN
– 18 –
Owner’s Manual
4-way Air Discharge Cassette Type
„Cancel louver lock
Set the louver direction to “0000” in step 4 of the louver lock setup procedure.
SET DATA
“0000”
• When the setting is cancelled,
goes out.
Perform the same operations as steps 1, 2, 3, 5, and 6 above.
„Change power saving mode setting
1
3
2
4
5
1
2
Push
button for at least four seconds
3
Push TIME
buttons to adjust the
when the air conditioner is not working.
power-save setting.
•
and numbers flash.
(left side of button) to select an
• Each push of the button changes the power
level by 1% within the range from 100% to 50%.
* The factory default is 75%.
Push
indoor unit to be set.
• Each time you push the button, unit numbers
change as follows:
UNIT No.
1-1
UNIT No.
1-2
UNIT No.
1-3
UNIT No.
1-4
Setting of power level in
power saving mode
The fan of the selected unit runs and the louvers
start swinging.
4
5
Push
Push
button.
button to complete the setting.
19-EN
– 19 –
Owner’s Manual
4-way Air Discharge Cassette Type
12.MAINTENANCE
WARNING
Cleaning the air filter and other parts of the air filter involves dangerous work in high places, so be
sure to have a service person to do it.
Do not attempt to do it by yourself.
To avoid the possibility of electric shock, always turn off power to the system before performing any
cleaning or maintenance to the system. Turn off the outdoor disconnect switch located near outdoor
unit.
Operating the system with dirty filters may damage the indoor unit and could cause reduced cooling
performance.
Periodic Maintenance - periodic maintenance is recommended to ensure proper operation of the unit.
Recommended maintenance intervals may vary depending on the installation environment, e.g. dusty zones, etc.
Refer to table below.
Periodic Maintenance
INDOOR UNIT
EVERY MONTH
EVERY 4 MONTHS
EVERY YEAR
1
Clean Air Filter*
Clean Drain Pan
1
1
2
Clean indoor heat exchanger*
1
1
1
2
Clean fan*
Change Remote Control Batteries
OUTDOOR UNIT
EVERY MONTH
EVERY 4 MONTHS
EVERY YEAR
Clean Outdoor heat exchanger from Outside
1
2
Clean Outdoor heat exchanger from Inside*
1
1
1
1
1
1
2
Blow Air Over Electric Parts*
2
Check Electric Connection Tightening*
2
Clean Fan Wheel*
Check Fan Tightening*
2
2
Clean Drain Pans*
*1: Increase frequency in dusty zones.
*2: Maintenance to be carried out by qualified service personal.
REQUIREMENT
Be sure to clean the heat exchanger with pressurized water.
If a commercially available detergent (strong alkaline or acid) cleaning agent is used, the surface treatment of the
heat exchanger will be marred, which may degrade the self cleaning performance.
For further details, contact the dealer.
Replacing antibacterial glass
Request your dealer to replace the antibacterial glass every 10000 hours of
cooling operation.
Part code
43179152
EN
Antibacterial glass
– 20 –
20-EN
Owner’s Manual
4-way Air Discharge Cassette Type
8. Push
button to reset filter timer.
Cleaning the air filter
• “FILTER ” disappears.
The fan is running for self cleaning maintenance after
running the cooling or dry mode. Terminate the self
cleaning mode forcibly when maintaining the air
conditioner.
CAUTION
• Do not start the air conditioner while leaving the panel
and air filter removed.
• If
is displayed on the remote control, clean the air
filter.
1. Open the return air grille by sliding the latches. Let
the grille drop while holding it.
Cleaning Unit Grille and Frame
To clean the grille and the frame, wipe the outside with
a soft, dry cloth. If necessary, a mild liquid detergent
can be applied and wiped off with a dry cloth.
Cleaning The Louvers
1. Remove the discharge louver by holding it at both
ends and pulling downwards towards the center.
Return air grille
Knob
2. Remove the air filter from grille.
2. Clean the louvers with water or mild detergent.
3. Mount the discharge louver by inserting one end and
bending it outwards to allow the other end to be
inserted.
2)Insert in the louver sagging
down the center downward.
1) Insert
Strap to
prevent falling
Air filter
3. Vacuum the filter and rinse it with water.
4. Dry the filter.
NOTE
5. Wipe the inside of the return air grille with water or
mild detergent and then dry it.
6. Reinstall the filter.
When installing the louvers, make sure the side with
marking faces upwards.
7. Close the grille and secure it to the frame by the
latches.
Preparing for long Shut Down Period
1. Clean the filters and repostion them in unit.
2. Operate the unit in fan mode for 3 or 4 hours to dry
all internal parts.
3. Turn the unit off and disconnect the main power
supply.
4. Before unit is turned on again, make sure the circuit
breaker has been turned on for at least 12 hours.
Return air grille
Knob
21-EN
– 21 –
Owner’s Manual
4-way Air Discharge Cassette Type
13.INFORMATION FOR INSTALLATION
Installation place
CAUTION
• Check that the air conditioner is not installed in a place subject to combustible gas leak.
Accumulation of combustible gas around the unit may cause a fire.
• Drain the dehumidified water from the indoor unit and outdoor unit to a well-drained place.
• Do not put any obstacle near the air inlets and air outlet of the outdoor unit. Doing so may hinder the radiation, which
may reduce the performance or activate the protective device.
Electrical wiring
WARNING
• Be sure to connect ground wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.
CAUTION
• Make sure that a circuit breaker is connected.
Using the air conditioner without circuit breaker may cause electric shock.
• Use circuit breaker with appropriate capacity.
Be sure to use the rated voltage and an exclusive circuit for power supply of the air conditioner.
Do not install the air conditioner in the following places
• Do not install the air conditioner in any place within 3’3” (1 m) from a TV, stereo, or radio set. If the unit is installed
in such place, noise transmitted from the air conditioner affects the operation of these appliances.
• Do not install the air conditioner near a high frequency appliance (sewing machine or massage machine for
business use, etc.), otherwise the air conditioner may malfunction.
• Do not install the air conditioner in a humid or oily place, or in a place where steam, soot, or corrosive gas is
generated.
• Do not install the air conditioner in a salty place such as seaside area.
• Do not install the air conditioner in a place where a great deal of machine oil is used.
• Do not install the air conditioner in a place where it is usually exposed to strong wind such as in seaside area.
• Do not install the air conditioner in a place where sulfurous gas generated such as in a spa.
• Do not install the air conditioner in a vessel or mobile crane.
• Do not install the air conditioner in an acidic or alkaline atmosphere (in a hot-spring area or near a chemicals
factory, or in a place subject to combustion emissions). Corrosion may be generated on the aluminium fin and
copper pipe of the heat exchanger.
• Do not install the air conditioner near an obstacle (air vent, lighting equipment, etc.) that disturbs discharge air.
(Turbulent airflow may reduce the performance or disable devices.)
• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects,
or where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)
• Do not install the air conditioner over an object that must not get wet. (Condensation may drop from the indoor
unit at a humidity of 80% or more or when the drain port is clogged.)
• Do not install the air conditioner in a place where an organic solvent is used.
• Do not install the air conditioner near a door or window subject to humid outside air. Condensation may form on
the air conditioner.
EN
• Do not install the air conditioner in a place where special spray is used frequently.
– 22 –
22-EN
Owner’s Manual
4-way Air Discharge Cassette Type
Be careful with noise or vibrations
• Do not install the air conditioner in a place where noise by outdoor unit or hot air from its air outlet annoys your
neighbors.
• Install the air conditioner on a solid and stable foundation so that it prevents transmission of resonating, operation
noise and vibration.
• If one indoor unit is operating, some sound may be audible from other indoor units that are not operating.
WARNING
Re-Installation
Ask the dealer or an installation professional to re-install the air conditioner to a new place or move it to another place
and to observe the following items.
If the air conditioner is inappropriately installed by yourself, it may cause electric shock or fire.
Maintenance
• This product incorporates a drain pump.
If it is used in a place full of dust or oil mist, the pump will be clogged and proper drainage is disabled.
Clean the drain pump periodically. For how to clean the drain pump, contact the dealer.
CAUTION
Be sure to clean the heat exchanger with pressurized water.
If an commercially detergent (strong alkaline or acid cleaning agent) is used, the surface treatment of the heat
exchanger will be marred, which may degrade the self cleaning performance.
For details, contact the dealer.
23-EN
– 23 –
Owner’s Manual
4-way Air Discharge Cassette Type
14.TROUBLE SHOOTING
CAUTION
If any of the following conditions occur, turn off the circuit breaker and immediately contact the dealer:
• The operation lamps flash at short intervals (5 Hz) even though you have tried turning off the power supply and turning
on again after 2 or 3 minutes.
• Switch operation does not work properly.
• The main power fuse often blows out, or the circuit breaker is often activated.
• A foreign matter or water fall inside the air conditioner.
• When the air conditioner does not operate even after the cause of the protective device activation has been removed.
(The operation lamp and
on the remote control are flashing.)
• Any other unusual conditions are observed.
Before you ask for servicing or repairs, check the following points.
▼ Recheck
Inoperative
• The circuit breaker is turned off.
• The circuit breaker is activated to cut off power supply.
• The main power fuse has blown out.
• The louvers are not directed correctly.
Does not cool well or heat well
• The air inlet and/or outlet of the outdoor unit is blocked.
• Doors or windows are opened.
• The fan speed is set to low.
• The air conditioner is set in the DRY mode in cooling.
• The set temperature is too high (In cooling) or low (In heating).
▼ These are not malfunction.
Indoor unit or outdoor unit makes a strange noise.
• When the temperature suddenly changes, the indoor or outdoor unit occasionally makes a strange noise
because of expansion/ contraction of parts or change of refrigerant flow.
• Air leaking sound is heard occasionally.
It is generated by the solenoid valve when it is actuated.
• A clattering sound is heard when the power is turned on.
It is generated by the outdoor unit during preparation for operation.
The room air is smelly or a bad odor comes from the air conditioner.
• Smells impregnated in the walls‚ carpets, furniture, clothing, or furs, come out.
Outdoor unit is frosted in heating operation.
Water drains from outdoor unit.
• The outdoor unit is sometimes frosted in heating operation.
In that case, the unit automatically performs defrosting (for 2 - 10 minutes) for increasing the heating efficiency.
• In defrosting operation, both the indoor and outdoor units stop air flow.
• Hiss sound is heard when flow of the refrigerant is changed for defrosting.
• Resultant water of automatic defrosting in heating operation drains from outdoor unit.
The fan does not stop when the operation is stopped.
• The fan runs in the self cleaning mode to dry the heat exchanger.
EN
Air flow changes though the FAN button is not set to the AUTO mode.
• When the temperature of blown air drops in heating operation, the air conditioner automatically changes or stops
air flow from the indoor unit not to make persons in the room feel chilly.
• Air flow from the indoor unit is occasionally changed in the cooling operation.
– 24 –
24-EN
Owner’s Manual
4-way Air Discharge Cassette Type
A white mist of chilled air or water is generated from the outdoor unit.
• When the indoor unit in cooling operation or the outdoor unit in defrosting operation occasionally steams.
Protective device
• The protective device stops operation when the air conditioner is overloaded.
• When the protective device is activated, the current operation stops and the operation lamp and
remote control flash.
on the
When the protective device is activated
• When the protective device has been activated and stopped operation, turn off the circuit breaker immediately,
and ask the installer to find the cause.
If the air conditioner is operated without fixing the problem, the air conditioner may malfunction.
• Check whether the air filters are installed.
If the air filters are not installed, the air coil may be clogged with dust, which may result in water leakage.
Cooling
• When the air inlet and/or outlet of the outdoor unit are blocked
• When the air outlet of the outdoor unit is continuously exposed to strong wind
Heating
• When the air filters are clogged with too much dust or dirt
• When the suction port and/or discharge port of the indoor unit are blocked
Do not turn off the circuit breaker
Do not turn off the circuit breaker during a test run of the air conditioner. Use the ON/OFF button on the air
conditioner instead to control the power.
Contact a qualified dealer or contractor if the system is not operating properly or any of the following occurs:
• On board safety control stops the system. When this happens the operation lamp and on the remote control are
flashing.
• When a diagnostic code is displayed on the wired remote control.
Make a note of the error code and inform the dealer or cotractor.
25-EN
– 25 –
Owner’s Manual
4-way Air Discharge Cassette Type
MEMO
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EH99933501
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