AUUB18TLAV1

AUUB24TLAV1

AUUB30TLAV1

AUUB36TLAV1

AUUB48TLAV1

OPERATING MANUAL

INDOOR UNIT (Cassette type)

Keep this manual for future reference.

MODE D’EMPLOI

UNITÉ INTÉRIEURE (Type cassette)

Conservez ce manuel pour pour toute référence ultérieure.

MANUAL DE FUNCIONAMIENTO

UNIDAD INTERIOR (Tipo casete)

Conserve este manual para posibles consultas futuras.

PART No. 9369313264-02

OPERATING MANUAL

PART No. 9369313264-02

VRF system indoor unit (Cassette type)

CONTENTS

SAFETY PRECAUTIONS ........................................................................ 1

NAME OF PARTS ................................................................................... 1

MANUAL AUTO OPERATION ................................................................ 2

AIRFLOW DIRECTION ........................................................................... 2

HUMAN SENSOR (Optional) .................................................................. 2

OPERATING TIPS .................................................................................. 3

CLEANING AND CARE........................................................................... 4

TROUBLESHOOTING ............................................................................ 4

SPECIFICATIONS ................................................................................... 5

SAFETY PRECAUTIONS

● Before using the appliance, read these “PRECAUTIONS” thoroughly and operate in the correct way.

● The instructions in this section all relate to safety; be sure to maintain safe operating conditions.

● “WARNING” and “CAUTION” have the following meanings in these instructions:

WARNING

CAUTION

This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.

This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or damage to property.

PRECAUTIONS ON USE

WARNING

● Do not keep exposing oneself to the direct wind of air conditioner for a long time.

● Do not insert fi ngers or objects into the outlet port or intake grilles.

● Except for EMERGENCY, never turn off main as well as sub breaker of the indoor units during operation. It will cause compressor failure as well as water leakage. First, stop the indoor unit by operating the control unit, converter or external input device and then cut the breaker.

Make sure to operate through the control unit, converter or external input device.

● If the power supply cord of this appliance is damaged, it should only be replaced by the authorized service personal, since special purpose tools and speci fi ed cord are required.

● If any refrigerant happens to leak, extinguish any fl ames, ventilate the room and get in touch with authorized service personnel.

CAUTION

● Do not place animals or plants in the direct path of the air fl ow.

● Do not direct air fl ow at fi replaces or heating apparatus.

● Do not block or cover the inlet port and outlet port.

● Do not climb on, or place objects on, the air conditioner.

● Do not set fl ower vases or water containers on top of air conditioners.

● Do not hang objects from the indoor unit.

● Do not place anything below the indoor unit that should not get wet.

● Always turn off the electrical breaker whenever cleaning the air conditioner or the air fi lter.

● Do not pour water or cleaning solvent on the unit directly, or wash the unit with them.

● Do not expose the air conditioner directly to water.

● Do not operate the air conditioner with wet hands.

● Check the condition of the installation stand for damage.

● Operate only with air fi lters installed.

● Do not drink the water drained from the air conditioner.

● Do not apply any heavy pressure to radiator fi ns.

● Do not use in fl ammable gases near the air conditioner.

● Do not touch the piping during operation.

● Ensure that any electronic equipment is at least 40 in (1 m) away from either the indoor or outdoor units.

● This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

Note:

Switching the operating mode in the heat recovery system may require some time to prepare for operation. Please note that this is not a fault.

PRECAUTIONS ON INSTALLATION

CAUTION

● Do not attempt to install this air conditioner by yourself.

● 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 the unit.

● The unit must be grounded.

● Make sure drain work is implemented properly for drainage.

● Avoid installing the air conditioner near a fi replace or other heating apparatus.

● When installing the indoor and outdoor units, take precautions to prevent access by infants.

NAME OF PARTS

Engraved mark

(1)

(2)-2

(2)-1

(3)

(2)-4

(2)-3

(1) Air fi lter (in air intake grille)

(2) Air fl ow direction fl aps

The name of the outlet ports (in “Individual VT Hold setting” by the wired remote controller).

(2)-1: Outlet 1

(2)-2: Outlet 2

(2)-3: Outlet 3

(2)-4: Outlet 4

Please refer to the “AIRFLOW DIRECTION”.

(3) Air intake grille

(4) Control panel (optional)

(4)

(5)

(6) (7) (8)

(5) Remote control signal receiver and Manual auto button: Remote control signal receiver is the place to receive the signals from the remote controller. MANUAL AUTO button is used to operate it while remote controller is not available.

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(6) TIMER Indicator Lamp (Orange): It lights on while timer is working.

(7) OPERATION Indicator Lamp (Green): It lights on while operating.

(8) FILTER Indicator Lamp (Red): It lights on if the fi lter became dirty.

Clean the fi lter referring to “CLEANING AND CARE”. It lights off when

RESET button is pressed after cleaning.

(9) Human censor (optional)

AIRFLOW DIRECTION

The vertical wind direction can be controlled with the remote controller.

Vertical air

fl

ow direction

(9)

Control unit (optional)

Types of remote controllers:

● Wireless remote controller

● Wired remote controller

● Simple remote controller

For operation method, please refer to the operating manual of each device.

MANUAL AUTO OPERATION

Use the MANUAL AUTO operation in the event the remote control unit is lost or otherwise unavailable.

*Limited to only when IR receiver kit is attached.

CAUTION

Do not press the MANUAL AUTO button with wet hands or pointed objects, otherwise an electric shock or malfunction may occur.

Starting Operation

Press the MANUAL AUTO button on the operating control panel.

The operation can be set in the following setting.

Operating mode

Fan speed

AUTO:

When Auto mode cannot be selected, it will operate in the same mode as the other indoor unit in the same system. (When other indoor unit in the same system does not operate, the air conditioner will operate in cooling.)

AUTO

Setting temperature 74°F (23°C)

Stopping Operation

Press the MANUAL AUTO button on the operating control panel.

Emergency Heat

* It is available when this function is enabled. Please consult an authorized service personnel as to whether this function is effective.

Set emergency heat

During heating operation, press the MANUAL AUTO button on the operating control panel.

Auxiliary heater will be primary heater, and the outdoor unit will stop.

The OPERATION Indicator Lamp (Green) blinks during emergency heating operation.(3 seconds on, 1 second off.)

Cancel emergency heat

During emergency heating operation, press the MAN-

UAL AUTO button on the operating control panel.

Cooling & Dry : (1), (2), (3), (4)

Heating : (1), (2), (3), (4)

(4)

(3)

(2)

(1)

Individual VT Hold

You can set the air fl ow direction of the outlet ports individually using a remote controller.

Setting of “Individual VT Hold setting” can be done in the remote controller of the following.

● UTY-RNRUZ* (wired remote controller)

Refer to the operating manual of the remote controller.

HUMAN SENSOR

(Optional)

About the human sensor

The Human sensor detects whether there are people in the room by looking for movement by people in the room.

* Limited to only when Human censor kit is attached.

Setting of Human sensor can be done in the remote controller of the following. Refer to the operating manual of the remote controller.

● UTY-RNRUZ* (wired remote controller)

About the Auto saving operation

If no one enters the room during the set time (15, 30, 60, 90, 120, 180 minutes), the set temperature will be automatically controlled.

(When someone comes back into the room, the Human sensor will detect this, and automatically revert to the original settings.)

About the Auto off operation

If no one enters the room during the set time (1 to 24 hours in 1 hour increments), the air conditioner will automatically stop operation.

NOTES:

● To restart operation, press the [On/Off] button of the remote controller.

● The Auto off operation may not operate even if there is no one in the room. The sensor may incorrectly detect people even if there is no one in the room.

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Application range

CAUTION

● Do not place large objects near the Human sensor. Also keep heating units outside the sensor’s detection area.

32 in

(0.8m)

10 ft (3.2m)

28 ft (8.8m)

Equal sensitivity range of temperature

Ceiling height: 10 ft (3.2 m)

Detecting position: 32 in (0.8 m) from fl oor surface

NOTES:

● When the installation height gets higher, the temperature sensitivity decreases.

● Energy Saving function may not work when the room temperature is very different from the temperature de fi ned in temperature setting, such as when immediately after starting the operation.

● Since the Human sensor detects infrared light given out by people, there may be cases where this detection is incorrect.

Situations in which the sensor will detect no people in the room, even when there is someone there

● When the temperature is high and the difference with between people’s body temperature is small. (Such as during the summer when the temperature is 86°F (30°C) or higher.)

● When there is someone in the room, but they do not move for a long period of time.

● When someone is hidden behind a sofa, other furniture, glass, or in similar situations.

● When someone is wearing extremely thick clothing and has their back facing the sensor.

Situations in which the sensor will incorrectly detect people in the room, even when there is no one there

● When there is a dog or a cat moving around in the room.

● When the wind is making curtains or plants move.

● When there are heating units, humidi fi ers, or electric appliances such as oscillating electric fans operating.

OPERATING TIPS

Operation and Performance

About priority state and standby state

● Multiple indoor units can be connected within the same system. Depending on the system, choice of operating mode are limited.

Cooling priority state:

When the other indoor units within the same system operate in cooling or dry mode, heating cannot be selected at the same time.

Heating priority state:

When the other indoor units within the same system operate in heating mode, cooling and dry mode cannot be selected at the same time.

Standby state:

The standby state activates when 2 or more indoor units start up at the same time in different mode. Any indoor unit other than priority mode will wait in standby state until priority mode changes (operation starts as soon as priority is switched).

At this time, the OPERATION indicator lamp (green) lights up and the

TIMER indicator lamp (orange) fl ashes.

Low ambient cooling

● When the outdoor temperature drops, the outdoor unit’s fans may switch to Low Speed, or one of the fans may stop intermittently.

Heating performance

● Heating mode 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 insuf fi cient heating performance is being produced, we recommend you use this air conditioner in conjunction with another type of heating appliance.

● Heating mode heat your entire room by recirculating air throughout the room, with the result that some time may be required after fi rst starting the air conditioner until the room is heated.

Microcomputer-controlled automatic defrosting

● When using the Heating mode under conditions of low outdoor air temperature 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 defrosting function. If frost forms, the air conditioner will temporarily stop, and the defrosting circuit will operate brie fl y (for about 4 to 15 minutes).

During Automatic Defrosting operation, the OPERATION indicator lamp (green) will fl ash.

Oil recovery operation

● Periodically, the oil recovery operation is performed in order to return compressor oil to the outdoor unit. During oil recovery operation, the

OPERATION indicator lamp (green) will fl ash (for about 10 minutes).

Temperature and humidity range

● The temperature and humidity required for operating this product is as shown in the following table.

Cooling/Dry Mode Heating Mode

Outdoor temperature

Indoor temperature

Indoor humidity

Please refer to the speci

About 64 to 90 °F DB

(18 to 32 °C DB)

About 80% or less fi cation of outdoor units.

About 50 to 86 °F DB

(10 to 30 °C DB)

● If the air conditioner is operated under higher temperature conditions than those listed, the built-in protection circuit may operate to prevent internal circuit damage. Also, during Cooling and Dry modes, if the unit is used under conditions of lower temperature than those listed above, the heat-exchanger may freeze, leading to water leakage and other damage.

● If the unit is used for long periods under high-humidity conditions, condensation may form on the surface of the indoor unit, and drip onto the fl oor or other objects underneath.

● Do not use this unit for any purposes other than the Cooling, Heating,

Dehumidifying, and air-circulation of rooms in ordinary dwellings.

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CLEANING AND CARE

CAUTION

● Before cleaning the unit, be sure to stop the unit and disconnect the power supply.

● Do not stand on an unstable platform when cleaning.

● When removing and replacing the air fi lters, be sure not to touch the heat exchanger, as personal injury may result.

● Be sure the intake grille is installed securely.

● Do not clean the inside of the unit by yourself. To clean the inside, always consult authorized service personnel.

● When cleaning the unit’s body, do not use water hotter than 104°F

(40°C), harsh abrasive cleansers, or volatile agents like benzene or thinner.

● Do not remove any part from the unit except for the fi lter.

● If dirt is allowed to accumulate on the Air Filter, air fl ow will be reduced, lowering operating ef fi ciency and increasing noise.

● During periods of normal use, the air fi lters should be cleaned every 2 months.

Cleaning the Air Filter

When the

fi

lter lamp

fl

ashes, remove and clean the

fi

lter.

1. Push the intake grille push-buttons (two places) and open the intake grille.

2. Pull out the

fi

lter from the intake grille.

1.

2.

3. Clean the air

fi

lters.

Remove the dust from the air fi lters by vacuuming or washing them. After washing, allow the air fi lters to dry thoroughly in an area protected from sunlight.

• Dust can be cleaned from the air fi lter either with a vacuum cleaner, or by washing the fi lter in a solution of mild detergent and warm water.

If you wash the fi lter, be sure to allow it to dry thoroughly in a shady place before reinstalling.

• If dirt is allowed to accumulate on the air fi lter, air fl ow will be reduced, lowering operating ef fi ciency and increasing noise.

4. Re-attach the air

fi

lters to the intake grille.

(1) Replace the air fi lter into its holder.

(2) Make sure that the air fi lter makes contact with the fi lter stopper when it is replaced into its holder.

5. Close the intake grille and push the intake grille’s hooks outward.

● Dust can be cleaned from the air fi lter either with a vacuum cleaner, or by washing the fi lter in a solution of mild detergent and warm water.

If you wash the fi lter, be sure to allow it to dry thoroughly in a shady place before reinstalling.

● If dirt is allowed to accumulate on the air fi lter, air fl ow will be reduced, lowering operating ef fi ciency and increasing noise.

● After turning the power on, press the fi lter button on the remote control to turn off the fi lter lamp. (Refer to the operation manual packed with remote control unit for details.)

Cleaning the body

Wash the body with warm water, and then dry with a clean and soft cloth.

When not using for an extended period

Leave the breaker on for at least 12 hours before starting operation when it is to be used again.

TROUBLESHOOTING

The following conditions are not breakdowns or operation failures.

Does not operate immediately:

● If the unit is stopped and then immediately started again, the compressor will not operate for about 3 minutes, in order to prevent fuse blowouts.

● Whenever the electrical breaker is turned off then on again, the protection circuit will operate for about 3 minutes, preventing unit operation during that period.

Air fl ow is weak or stops:

● When Heating operation is started, indoor unit’s fan may temporarily stop, to allow internal parts to warm up.

● During Heating operation, if the room temperature rises above the thermostat setting, the outdoor unit will stop, and the indoor unit’s fan will stop. If you wish to warm the room further, set the thermostat for a higher setting.

● During oil recovery operation, the air fl ow may stop for approximately

10 minutes. (See page 2)

● During Heating operation, the unit will temporarily stop operation (between 4 and 15 minutes) as the Automatic Defrosting mode operates.

(See page 2)

● The fan may operate at 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 low speed.

Flashing lamps:

● The OPERATION indicator lamp (green) fl ashes:

An oil recovery operation is being performed. (See page 2)

● The OPERATION indicator lamp (green) fl ashes:

An automatic defrosting operation is being per formed. (See page 2)

● The OPERATION indicator lamp (green) and TIMER indicator lamp

(orange) are fl ashing alternately:

It has recovered from a power outage.

● The OPERATION indicator lamp (green) and TIMER indicator lamp

(orange) are fl ashing simultaneously:

It is operating in trial operation mode. Ask a manager as there may be maintenance being conducted.

● The OPERATION indicator lamp (green) lights up and the TIMER indicator lamp (orange) fl ashes:

This is the standby state. (See page 2)

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Noise is heard:

● In the following conditions there are sounds of water fl owing from the indoor unit and the operation sound becomes loud. These are the sounds of the fl owing of refrigerant.

When operation starts

When oil recovery operation fi nishes

When automatic defrosting operation fi nishes

● During operation, a slight squeaking sound may be heard. This is the result of minute expansion and contraction of the panel due to temperature changes.

● During Heating operation, a sizzling sound may be heard occasionally.

This sound is produced by the Automatic Defrosting operation. (See page 2)

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.

Fog comes out of the indoor unit:

● During Cooling 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.

Steam comes out of the indoor unit:

● 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. (See page 2)

Water is produced from the outdoor unit:

● During Heating operation, water may be produced from the outdoor unit due to the Automatic Defrosting operation.

The following conditions may not be breakdowns so check again.

Does not operate at all:

● Has there been a power failure?

● Has a fuse blown out, or a circuit breaker been tripped?

● Is the main power switch set to the OFF position?

● Are you trying to engage in an operation different from the priority state? (See page 3)

● Is it in standby state? (See page 3)

● Is the Auto off operation of the Human sensor setting active? (See page 2)

The operation mode cannot be changed:

● Are you trying to change to an operation different from the priority conditions? (See page 3)

Poor Cooling (or Heating) performance:

● Did you adjust the room temperature settings (thermostat) correctly?

● Is the air fi lter dirty? (See page 4)

● Are the air conditioner’s inlet port or outlet port blocked?

● 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?

● Is the fan speed set to low?

● Is the Auto saving operation of the Human sensor setting active? (See page 2)

Set the temperature lower than the room temperature and use it:

● Temperature does not fall down well. Temperature may not fall down depending on the room conditions. (While high humidity or the room temperature is high.) (See page 3)

In the following situations stop operation immediately and get in touch with authorized service personnel.

● The problem cannot be solved even when the troubleshooting checks have been performed.

● The FILTER indicator lamp (red) is fl ashing very fast.

● The wired remote controller or simple remote controller indicate Er

(when connected).

● It has burning smell.

SPECIFICATIONS

MODEL

AUUB

18TLAV1

POWER SOURCE

AVAILABLE

VOLTAGE RANGE

COOLING

CAPACITY

HEATING

CAPACITY

Btu/h

(kW)

Btu/h

(kW)

SOUND PRESSURE LEVEL

HIGH dB [A] 33

MED - HIGH dB [A]

MED dB [A]

32

31

30 MED - LOW dB [A]

LOW dB [A]

QUIET dB [A]

DIMENSIONS & WEIGHT

29

28

HEIGHT

WIDTH

[in (mm)]

[in (mm)]

18,000

(5.3)

20,000

(5.9)

AUUB

24TLAV1

AUUB

30TLAV1

AUUB

36TLAV1

208/230 V ~ 60 Hz

24,000

(7.0)

27,000

(7.9)

35

33

32

31

30

28

187 to 253 V

30,000

(8.8)

34,000

(10.0)

40

36

34

32

31

28

9-11/16 (246)

33-1/16 (840)

36,000

(10.6)

40,000

(11.7)

41

40

38

37

35

33

AUUB

48TLAV1

48,000

(14.1)

54,000

(15.8)

47

45

42

39

36

33

11-5/16 (288)

DEPTH

WEIGHT

[in (mm)]

[lbs (kg)] 53 (24)

33-1/16 (840)

54 (24.5) 65 (29.5)

● Acoustic Noise Information:

The maximum sound pressure level is less than 70 dB (A) for both indoor unit and outdoor unit. According IEC 704-1 and ISO 3744.

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