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En-4

: HIGH

: MED

: LOW

TIMER
MODE

SET

ZONE

START/STOP

CLOCK ADJUST

SET TIME

TEMP./DAY

FAN

CONTROL

MASTER

CONTROL

DAY OFF

ENERGY SAVE

°

F

NON STOP

AM

CLOCK

AUTO

To Set the Fan Speed

Press the FAN CONTROL button to select the fan speed.

AUTO

HIGH

MED

LOW

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 tem-
perature of the air issued from the indoor unit is low.

Cooling :

As the room temperature approaches that of the thermostat set-
ting, the fan speed becomes slower.

Fan

:

The fan alternately turns on and off; when on, the fan runs at the
low fan speed.

The fan will operate at a very low setting during Monitor operation.

To Stop Operation

Press the START/STOP button.

The remote controller’s operation lamp (green) will go out.
The display contents disappear and only the current time is displayed.

Example:

When set to HIGH

Setting temperature

Thermostat control

Dry Operation

Cooling Operation

About Mode Operation

AUTO:
COOLING MODEL

When the room temperature is 4 °F higher than the set temperature, the mode
will switch between Cooling and Drying.

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.

If the mode automatically selected by the unit is not satisfactory, see page 3 for
instructions on changing the mode setting (COOL, FAN).

4 °F

Instructions relating to heating(*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).

OPERATION

AUTO (* AUTO CHANGEOVER):
HEAT & COOL MODEL (Reverse cycle)

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 very low speed for about one minute while the unit
determines the current conditions of the room and accordingly selects the proper operation mode.

When the air conditioner has adjusted your room’s temperature to near the thermostat setting, it will begin monitor opera-
tion. 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 thermostat. (The monitor operation range is ±4 °F relative to the thermostat setting.)

If the mode automatically selected by the unit is not satisfactory, see page 3 for instructions on changing the mode setting
(HEAT, COOL, FAN).

* 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 set-
ting. This period of time is provided to allow the indoor unit to warm up before
begin 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 defrosting (see
page 15), the heating mode will be temporarily interrupted.  DEFROST  will be
shown on the remote controller display.

Cooling:

Use to cool your room.

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 mode:

Set the thermostat to a temperature set-
ting that is lower than the current room
temperature. The Cooling mode will not
operate if the thermostat is set higher than
the actual room temperature (in Cooling
mode, the fan alone will operate).

s

s

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Summary of Contents for AUU18RC

Page 1: ...D Indoor Unit AUU18RC AUU24RC AUU36RC AUU42RC Outdoor Unit AOU18RC AOU24RC AOU36RC AOU42RC OPERATING MANUAL AIR CONDITIONER CAS S ETTE TYPE OPE R ATING MANUAL KEEP THIS OPERATION MANUAL FOR FUTURE REFERENCE E nglis h P N9368987022 ...

Page 2: ...ast 12 hours before starting the unit Do not drink the water drained from the air conditioner Do not use in applications involving the storage of foods plants or animals precision equipment or art works Do not apply any heavy pressure to radiator fins Operate only with air filters installed Do not block or cover the intake grille and outlet port Ensure that any electronic equipment is at least one...

Page 3: ...g 5 Display Fig 1 Indoor Unit 1 Air Filter 2 Air Intake Grille 3 Air Flow Direction Flaps Fig 2 Outdoor Unit 4 Air intake 5 Air outlet Fig 4 Remote Controller 6 START STOP Button 7 Operation Lamp 8 ENERGY SAVE Button 9 DAY OFF Button 0 ENERGY SAVE Lamp A ZONE Control Button B SET Button C ZONE Control Lamp D AIR FLOW DIRECTION SWING Button E AIR FLOW DIRECTION SWING Lamp F AIR FLOW DIRECTION SET B...

Page 4: ...forward Use to turn the time back Press once to move the time 1 minute hold down and the time will move 10 minutes at a time 4 Press the CLOCK ADJUST button again This registers the new day and time values The day display goes off and the time display stops flashing PREPARATION Instructions relating to heating are applicable only to HEAT COOL MODEL Reverse Cycle To Select Mode Operation 1 Press th...

Page 5: ...the fan will operate at very low speed for about one minute while the unit determines the current conditions of the room and accordingly selects the proper operation mode When the air conditioner has adjusted your room s temperature to near the thermostat setting it will begin monitor opera tion In the monitor operation mode the fan will operate at low speed If the room temperature subsequently ch...

Page 6: ... forward Use to turn the time back Press once to move the time 1 minute hold down and the time will move 10 minutes at a time Example Setting the OFF TIMER to 11 35 p m To confirm or Change Settings Before Starting Operation To confirm settings Press the TIMER MODE button once The timer setting information will be displayed for 15 seconds after the TIMER MODE button is pressed To change settings C...

Page 7: ... lows 1 Press the TIMER MODE button so that WEEKLY ap pears on the display The display now shows the current day by DAY CODE the first ON and OFF times for the day the WEEKLY 1 times the fan speed and the operating mode The top time value gives the ON time and the bottom value gives the OFF time If either time is not set the corresponding time display is blank 2 Press the TEMP DAY button to select...

Page 8: ...e for the day completing the WEEKLY 1 settings for that day The display switches to WEEKLY 2 and the day s second ON time be gins flashing 8 Repeat the operations described in Steps 4 to 7 to set the second ON and OFF times for the day the WEEKLY 2 times When you press the SET button after setting the WEEKLY 2 OFF time the system registers the WEEKLY 2 settings for the day and returns you to the W...

Page 9: ...n and the air conditioner also Press the START STOP button Reviewing the Time Settings Press the START STOP button to stop the air conditioner and then proceed as follows 1 Press the TIMER MODE button so that WEEKLY appears on the display 2 Press the TEMP DAY button to select the day that you want to check 3 Press the SET TIME button or to switch between the WEEKLY 1 or WEEKLY 2 time displays Canc...

Page 10: ...ss moves you to the next setting for the selected day as follows WEEKLY 1 WEEKLY 1 WEEKLY 2 WEEKLY 2 ON OFF ON OFF 3 Press the SET TIME button to change the time setting 4 Press the SET button The new setting overwrites the previous setting 5 Once the setting has been canceled hold down the SET button for 3 seconds The WEEKLY display flashes briefly and then the clock display appears Example Chang...

Page 11: ...g Press the START STOP button to stop the air conditioner and then proceed as fol lows 1 Carry out steps 1 to 2 of the Setting Up the Weekly Timer Operation procedure to select the day that you want to set as the DAY OFF 2 Press the DAY OFF button The DAY OFF setting is registered and the DAY OFF caption appears on the display To cancel the DAY OFF setting You can cancel the setting by pressing th...

Page 12: ...hile the air conditioner is on it will change to the conservation mode If you press the ENERGY SAVE button while the unit is in the timer mode ON timer WEEKLY timer the unit will go into the conserva tion mode when the unit starts with the timer If you turn off the air conditioner while in the conservation mode the mode will be shut off The temperature set on the remote controller will not change ...

Page 13: ...lderly or sick persons the air flow direction and room temperature should be considered carefully when making settings Begin air conditioner operation before performing this procedure To Select SWING Operation Press the AIR FLOW DIRECTION SWING button The AIR FLOW DIRECTION SWING lamp orange will light In this mode the UP DOWN air flow direction flaps will swing automatically to direct the air flo...

Page 14: ...iquid insecticides or hairsprays If the unit will not be operated for a period of one month or more be sure to allow the inner parts of the unit to dry thoroughly in advance by operating the unit in fan mode for half a day A A B OPEN PUSH Filter Intake grille B When reinstalling the filter be sure that the hooks at A and B engage correctly into place 4 Clean the air filters Remove the dust from th...

Page 15: ... nosis check ERRORS AND SELF DIAGNOSIS s t s t Error contents Communication error indoor unit remote controller Communication error indoor unit outdoor unit Room temperature sensor open Room temperature sensor shortcircuited Indoor heat exchanger temperature sensor open Indoor heat exchanger temperature sensor shortcircuited Outdoor heat exchanger temperature sensor open Outdoor heat exchanger tem...

Page 16: ...ient Cooling When the outdoor temperature drops the outdoor unit s fans may switch to Low Speed or one of the fans may stop inter mittently 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 AUTO Restart In Event of Power Interruption Use of other electrical appl...

Page 17: ...be operated with the same set ting To Use the ZONE CONTROL When the ZONE control button is pressed while multiple air conditioners are being centralized controlled only the preset air conditioners stop Press the ZONE control button Preset units will stop The ZONE lamp green will light To Stop the ZONE CONTROL Press the ZONE control button one more time Those units that were stopped will start agai...

Page 18: ...panel due to temperature changes During Heating operation a sizzling sound may be heard occa sional This sound is produced by the Automatic Defrosting op eration 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 a thin mist may be seen emitted from the indoor unit This results f...

Page 19: ... 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 If the problem persists after p...

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