ARC423 Series
ARC423A15, A16
Open the cover.
1
2
5
6
10
11
12
14
ON
C
AMPM AMPM
POWERFUL
TEMP
ON/OFF
MODE
HOMELEAVE
FAN SWING
SILENT
ON
OFF
TIMER
CANCEL
3
4
7
8
9
13
15
Si10-416A
106 Remote Controllers
Si10-416A ARC423 Series
1. Transmitter
It sends signals to the indoor unit.
2. Display
It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.)
3. TEMPERATURE adjustment buttons
It changes the temperature setting.
4. ON/OFF button
Press it once to start operation.
To stop it, press it once again.
5. POWERFULL button
6. MODE selector button
It selects the operation mode.
<FLK> <FLX>
: DRY : AUTO
: COOL
: FAN
: DRY
: COOL
: HEAT
7. FAN setting button
8. SWING button
9. OUTDOOR UNIT SILENT button
10. HOME LEAVE button
11. ON TIMER button
12. OFF TIMER button
13. TIMER CANCEL button
It changes the temperature setting.
14. TIME adjustment button
It changes the time setting.
15. CLOCK button
Unit operation panel and display panel
Operation lamp (green)
TIMER lamp (yellow)
HOME LEAVE lamp (red)
Lights up when you use
HOME LEAVE Operation.
Receiver
Remote Controllers
ON/OFF switch
107
ARC423 Series
4. ARC423 Series
4.1 Preparation Before Operation
Remote controller
Q Setting the batteries
Position + and
– correctly!
2
+
–
–
+
Si10-416A
3
1
1
Press with a finger and slide the front cover to take it off.
2
Set two dry batteries (AAA).
3
Set the front cover as before.
OThis will cause the figures on the display
to flash. Set the clock at this point.
238 Operation
Si10-416A ARC423 Series
Q Operating the remote controller
O To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate.
O Do not drop the remote controller. Do not get it wet.
O The maximum distance for communication is about
7 m.
O N
OFF
Receiver
Q To fix the remote controller
holder on the wall
1
Choose a place from where the signals reach the unit.
2
Fix the holder to a wall, a pillar, etc. with the screws supplied with the holder.
3
Place the remote control in the remote control holder.
Remote controller holder
Set.
O To remove, pull it upwards.
Operation 239
ARC423 Series Si10-416A
240 Operation
Si10-416A ARC423 Series
Operation 241
ARC423 Series Si10-416A
242 Operation
Si10-416A ARC423 Series
4.2 AUTO • DRY • COOL • HEAT • FAN
Operation
The air conditioner operates with the settings of your choice.
From the next time on, the air conditioner will operate with the same settings.
1
Press
MODE
and select a mode.
O Each pressing of the button advances the mode setting in sequence.
<FLK>
<FLX>
2
Press
ON/OFF
.
Then OPERATION lamp lights up.
Q To stop:
Press
ON/OFF
once again.
Then OPERATION lamp goes off.
Operation 243
ARC423 Series
Q To change the temperature setting:
DRY or FAN mode AUTO or HEAT or COOL mode
Press to raise the temperature and
The temperature press setting is not
to lower the temperature.
Set to the temperature you like.
variable.
C
Q To change the air flow rate setting:
Press
FAN
.
DRY mode AUTO or HEAT or COOL or FAN mode
The air flow rate setting is not variable.
Five levels of air flow rate setting from
“ ” to “ ”plus “ ” are available.
O At smaller air flow rates, the cooling effect is also smaller.
Si10-416A
244 Operation
Si10-416A ARC423 Series
NOTE
<Note on HEAT mode operation>
O Since this air conditioner heats the room by taking heat from outdoor air to indoors, the heating capacity becomes smaller in lower outdoor temperatures. If the heating effect is insufficient, it is recommended to use another heating appliance in combination with the air conditioner.
O The heat pump system heats the room by circulating hot air around all parts of the room.
After the start of heating operation, it takes some time before the room gets warmer.
O In heating operation, frost may occur on the outdoor unit and lower the heating capacity. In that case, the system switches into defrosting operation to take away the frost.
O During defrosting operation, hot air does not flow out of indoor unit.
<Note on DRY mode operation>
O This operation dehumidifies the indoor air when it is humid.
<Note on AUTO operation>
O In AUTO operation, the system selects a temperature setting and an appropriate mode
(COOL or HEAT) based on the room temperature at the start of the operation.
O The system automatically reselects setting at a regular interval to bring the room temperature to user-seetting level.
O If you do not like AUTO operation, you can select manually, you like the mode and setting.
Operation 245
ARC423 Series
4.3 Adjusting the Air Flow Direction
Si10-416A
246 Operation
Si10-416A ARC423 Series
Operation 247
ARC423 Series
4.4 POWERFUL Operation
POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode.
You can get the maximum capacity with a touch of a button.
O Pressing the (POWERFUL) button during operation starts POWERFUL operation.
O POWERFUL operation ends in 20 minutes.
Then the system automatically operates again with the settings which were used before
POWERFUL operation.
O During you use “POWERFUL operation”, the other functions will not go on.
Si10-416A
1
Press
POWERFUL
.
248
Q To cancel POWERFUL operation:
Press
POWERFUL
.
Notes on POWERFUL operation
O In COOL and HEAT mode
To maximize the cooling and heating effect, the capacity of outdoor unit must be increased and the air flow rate be fixed to the maximum setting.
The temperature and air flow settings are not variable.
O In DRY mode
The temperature setting is lowered by 3˚C and the air flow rate is slightly increased.
O In FAN mode
The air flow rate is fixed to the maximum setting.
Operation
Si10-416A ARC423 Series
4.5 OUTDOOR UNIT SILENT Operation
Operation 249
ARC423 Series
4.6 HOME LEAVE Operation
Si10-416A
250 Operation
Si10-416A ARC423 Series
Operation 251
ARC423 Series Si10-416A
252 Operation
Si10-416A ARC423 Series
Q Useful at times like these!
1 Every day before you leave the house...
When you go out, push the
“HOME LEAVE Operation” button, and the air conditioner will adjust capacity to reach the preset temperature for
HOME LEAVE Operation.
When you return, you will be welcomed by a comfortably air conditioned room.
Push the “HOME LEAVE
Operation” button again, and the air conditioner will adjust capacity to the set temperature for normal operation.
Operation 253
ARC423 Series
2 Before bed...
Set the unit to HOME
LEAVE Operation before leaving the living room when going to bed.
The unit will maintain the temperature in the room at a comfortable level while you sleep.
Si10-416A
When you enter the living room in the morning, the temperature will be just right.
Disengaging HOME LEAVE
Operation will return the temperature to that set for normal operation. Even the coldest winters will pose no problem!
254 Operation
Si10-416A ARC423 Series
NOTE
<Note on HOME LEAVE Operation>
O HOME LEAVE Operation is only available in COOL and HEAT modes.
(Cannot be used in AUTO, DRY, and FAN modes.)
O HOME LEA
VE Operation runs in accordance with the operation mode
the unit was in before using HOME LEAVE Operation.
O HOME LEAVE Operation can be set within the ranges shown below.
Temperature: (During heating) 10˚C to 30˚C
(During cooling) 18˚C to 32˚C
Air flow rate: 5 steps from weak to strong, or automatic.
O Using PO
WERFUL operation during HOME LEAVE Operation
will disengage HOME LEAVE Operation.
O T urning the unit off by flipping the switch on the unit during HOME
LEAVE Operation will shut the unit off. The unit will continue in HOME
LEAVE Operation when turned back on.
O T urning the unit off with the remote control during HOME LEAVE
Operation will shut the unit off.
H/P: HOME LEAVE Operation will be disengaged when the unit is turned back on.
C/O: HOME LEAVE Operation will continue when the unit is turned back on.
Operation 255
ARC423 Series
4.7 Timer Operation
Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination.
OFF TIMER operation
O Chec k that the clock is correct.
If not, set the clock to the present time.
1
Press
OFF
while the air conditioner is operating.
Si10-416A
AM
AM
is displayed.
blinks.
2
Press until the time setting
TIMER
reaches the point you like.
O Every pressing of either button increases or decreases the time setting by ten minutes. Holding down either button changes the setting rapidly.
256 Operation
Si10-416A ARC423 Series
3
Press
OFF
once again.
AM
Then the TIMER lamp lights up.
Q To cancel the timer:
Press
CANCEL
.
Then the TIMER lamp goes off.
Notes on OFF TIMER
O NIGHT SET MODE
When the OFF TIMER is set, the air conditioner automatically adjusts the temperature setting (0.5˚C up in COOL,
2.0˚C down in HEAT) to prevent excessive cooling (heating) for your pleasant sleep.
Operation 257
ARC423 Series Si10-416A
258 Operation
Si10-416A ARC423 Series
Operation 259
