Hitachi 0169E Service Manual

SERVICE MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY

RAS-18CP5 RAS-24CP5

NO. 0169E

RAS-18CP5/RAC-18CP5 RAS-24CP5/RAC-24CP5

REFER TO THE FOUNDATION MANUAL

CONTENTS

SPECIFICATIONS ----------------------------------------------------- 5 HOW TO USE ---------------------------------------------------------- 8 CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 30 MAIN PARTS COMPONENT ------------------------------------- 32 WIRING DIAGRAM -------------------------------------------------- 34 CIRCUIT DIAGRAM ------------------------------------------------- 37 PRINTED WIRING BOARD LOCATION DIAGRAM ------- 39 BLOCK DIAGRAM --------------------------------------------------- 41 BASIC MODE --------------------------------------------------------- 43 REFRIGERATING CYCLE DIAGRAM ------------------------- 49 DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 50 AUTO SWING FUNCTION ---------------------------------------- 54 SERVICE CALL Q & A -------------------------------------------- 55 TROUBLE SHOOTING --------------------------------------------- 60 PARTS LIST AND DIAGRAM ------------------------------------ 63

RAC-18CP5 RAC-24CP5

SPECIFICATIONS

TYPE

MODEL POWER SOURCE

TOTAL INPUT

COOLING

DIMENSIONS (mm)

NET WEIGHT

TOTAL AMPERES

CAPACITY

(W)

(A)

(kW)

(B.T.U./h)

H D

(kg)

INDOOR UNIT OUTDOOR UNITINDOOR UNITOUTDOOR UNIT

RAS-18CP5 RAC-18CP5

1 Ø, 50 Hz, 220 ~ 240V

1790 ~ 1950

8.30 ~ 8.50

5.10 ~ 5.20

17,410 ~ 17,750

1030

295 183

(WALL TYPE)

750 570

280

RAS-24CP5 RAC-24CP5

1 Ø, 50 Hz, 220 ~ 240V

1030

295 183

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

2270 ~ 2410

10.90 ~ 10.60

6.30 ~ 6.30

21,500 ~ 21,500

850 650

298

After installation

ROOM AIR CONDITIONER

FEBRUARY 2003

INDOOR UNIT + OUTDOOR UNIT

Refrigeration & Air-Conditioning

SAFETY DURING REPAIR WORK

DANGER

1. In order to disassemble and repair the unit in question, be sure to disconnect the power cord plug from the power outlet before starting the work.

First, I must disconnect the power cord plug

from the power outlet.

2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit, and the replacement must be effected in correct manner according to the instructions in the Service Manual of the unit.

If the contacts of electrical parts are defective, replace the electrical parts without trying to repair them.

3. After completion of repairs, the initial state should be restored.

4. Lead wires should be connected and laid as in the initial state.

5. Modification of the unit by user himself should absolutely be prohibited.

6. Tools and measuring instruments for use in repairs or inspection should be accurately calibrated in advance.

7. In installing the unit having been repaired, be careful to prevent the occurence of any accident such as electrical shock, leak of current, or bodily injury due to the drop of any part.

8. To check the insulation of the unit, measure the insulation resistance between the power cord plug and grounding terminal of the unit. The insulation resistance should be 1M or more as measured by a 500V DC megger.

9. The initial location of installation such as window, floor or the other should be checked for being and safe enough to support the repaired unit again. If it is found not so strong and safe, the unit should be installed at the initial location reinforced or at a new location.

10. Any inflammable thing should never be placed about the location of installation.

11. Check the grounding to see whether it is proper or not, and if it is found improper, connect the grounding terminal to the earth.

– 1 –

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS

1. Scope The standards provide for items to be generally observed in carrying and handling semiconductors in relative manufacturers during maintenance and handling thereof. (They apply the same to handling of abnormal goods such as rejected goods being returned).

2. Object parts (1) Micro computer

(2) Integrated circuits (IC) (3) Field-effect transistors (FET) (4) P.C. boards or the like on which the parts mentioned in (1) and (2) of this paragraph are equipped.

3. Items to be observed in handling (1) Use a conductive container for carrying and storing of parts. (Even rejected goods should be handled in

the same way).

A conductive polyvinyl bag

Fig. 1. Conductive Container

(2) When any part is handled uncovered (in counting, packing and the like), the handling person must always

use himself as a body earth. (Make yourself a body earth by passing one M ohm earth resistance through a ring or bracelet).

(3) Be careful not to touch the parts with your clothing when you hold a part even if a body earth is being

taken. (4) Be sure to place a part on a metal plate with grounding. (5) Be careful not to fail to turn off power when you repair the printed circuit board. At the same time,

try to repair the printed circuit board on a grounded metal plate.

Conductive sponge

Body earth (Elimik conductive band)

Fig. 2. Body Earth

Clip for connection with a grounding wire

– 2 –

(6) Use a three wire type soldering iron including a grounding wire.

Metal plate (of aluminium, stainless steel, etc.)

Staple

Bare copper wire (for body earth)

Fig. 3. Grounding of the working table

Working table

Resistor of 1 M (1/2W)

Earth wire

Soldering iron

Screw stop at the screwed part using a rag plate

Fig. 4. Grounding a soldering iron

Use a high insulation mode (100V, 10M or higher) when ordinary iron is to be used.

(7) In checking circuits for maintenance, inspection or some others, be careful not to have the test probes of the

measuring instrument shortcircuit a load circuit or the like.

Grounding wire

– 3 –

CAUTION

1. In quiet or stopping operation, slight flowing noise of refrigerant in the refrigerating cycle is heard occasionally, but this noise is not abnormal for the operation.

2. When it thunders near by, it is recommended to stop the operation and to disconnect the power cord plug from the power outlet for safety.

3. The room air conditioner does not start automatically after recovery of the electric power failure for preventing fuse blowing. Re-press START/STOP button after 3 minutes from when unit stopped.

4. If the room air conditioner is stopped by adjusting thermostat, or missoperation, and re-start in a moment, there is occasion that the cooling and heating operation does not start for 3 minutes, it is not abnormal and this is the result of the operation of IC delay circuit. This IC delay circuit ensures that there is no danger of blowing fuse or damaging parts even if operation is restarted accidentally.

5. This room air conditioner should not be used at the cooling operation when the outside temperature is below 10°C (50°F).

– 4 –

SPECIFICATIONS

MODEL

FAN MOTOR

FAN MOTOR CAPACITOR

FAN MOTOR PROTECTOR

COMPRESSOR

COMPRESSOR MOTOR CAPACITOR

OVERLOAD PROTECTOR

OVERHEAT PROTECTOR

FUSE (MICRO COMPUTER CIRCUIT)

POWER RELAY

POWER SWITCH

RAS-18CP5

20 W

–

3.15A

G4A

YES

RAC-18CP5

30 W

2.5µF, 450V

YES (INTERNAL)

SHY33MC4-E

50µF, 440VAC

(INTERNAL)

TEMPORARY SWITCH

SERVICE SWITCH

TRANSFORMER

VARISTOR

NOISE SUPPRESSOR

THERMOSTAT

REMOTE CONTROL SWITCH (LIQUID CRYSTAL)

FUSE CAPACITY

UNIT

REFRIGERANT CHARGING VOLUME (Refrigerant R22)

PIPES (MAX. 15m)

PIPES (MIN. 15m)

YES

YES (SWITCHING POWER SUPPLY)

450NR

YES(IC)

YES

20 A TIME DELAY FUSE

---------- 1250g

ADDITIONAL REFRIGERANT R22 AT 10g PER EVERY METER IF PIPE LENGTH MORE THAN 8m.

YES

YES(IC)

– 5 –

SPECIFICATIONS

MODEL

FAN MOTOR

FAN MOTOR CAPACITOR

FAN MOTOR PROTECTOR

COMPRESSOR

COMPRESSOR MOTOR CAPACITOR

OVERLOAD PROTECTOR

OVERHEAT PROTECTOR

FUSE (MICRO COMPUTER CIRCUIT)

POWER RELAY

POWER SWITCH

RAS-24CP5

20 W

–

3.15A

G4A

YES

RAC-24CP5

40 W

2.5µF, 450V

YES (INTERNAL)

SHV33YC1-E

60µF, 440VAC

(INTERNAL)

TEMPORARY SWITCH

SERVICE SWITCH

TRANSFORMER

VARISTOR

NOISE SUPPRESSOR

THERMOSTAT

REMOTE CONTROL SWITCH (LIQUID CRYSTAL)

FUSE CAPACITY

REFRIGERANT CHARGING VOLUME (Refrigerant R22)

PIPES (MAX. 15m)

PIPES (MIN. 15m)

YES

YES (SWITCHING POWER SUPPLY)

450NR

YES(IC)

YES

30 A TIME DELAY FUSE

---------- 1600gUNIT

ADDITIONAL REFRIGERANT R22 AT 20g PER EVERY METER IF PIPE LENGTH MORE THAN 8m.

YES

YES(IC)

– 6 –

Figure showing the installation of Indoor and Outdoor unit

CAUTION

The installation height of indoor unit must be 2.5m or more from floor in a non public area

above 50mm

above 100mm

above

0.45m

2,500mm or more

above 300mm

must not bend

above 100mm

above 700mm

above 200mm

above 50mm when installed on the

(

ceiling of balcony

Maximum pipe length 15m

Minimum pipe length 5m

)

Plug

above 100mm

give clearance as wide as possible

above 200mm

The indoor piping should be insulated with the enclosed insulation pipe. (If the insulator is insufficient, please use commersial products).

The difference in height between the indoor and outdoor unit should be kept max 5m. The connecting pipe, no matter big or small, should all be insulated with insulation pipe and then warapped with vinyl tape. (The insulator will deteriorate if it is not wrapped with tape).

The connection of insulated drain hose.

inner diameter ø 16mm

Please use insulated drain hose for the indoor piping (commercial product).

– 7 –

SAFETY PRECAUTION

●

Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.

●

Pay special attention to signs of “ Warning” and “ Caution”. The “Warning” section contains matters which, if not observed strictly, may cause death or serious injury. The “Caution” section contains matters which may result in serious consequences if not observed properly. Please observe all instructions strictly to ensure safety.

●

The sign indicate the following meanings.

Make sure to connect earth line.

Indicates the instructions that must be followed.

●

Please keep this manual after reading.

PRECAUTIONS DURING INSTALLATION

● Do not reconstruct the unit.

Water leakage, fault, short circuit or fire may occur if you reconstruct the unit by yourself.

● Please ask your sales agent or qualified technician for the installation

WARNING

CAUTION

of your unit. Water leakage, short circuit or fire may occur if you install the unit by yourself.

●

Please use earth line. Do not place the earth line near water or gas pipes, lightning-conductor, or the earth line of telephone. Improper installation of earth line may cause electric shock.

● A circuit breaker should be installed depending on the mounting site of

the unit. Without a circuit breaker, the danger of electric shock exists.

●

Do not install near location where there is flammable gas. The outdoor unit may catch fire if flammable gas leaks around it.

●

Please ensure smooth flow of water when installing the drain hose.

The sign in the figure indicates prohibition.

A R N

N G

A R N

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

●

Should abnormal situation arises (like burning smell), please stop operating the unit

and turn off the circuit breaker. Contact your agent. Fault, short circuit or fire may occur if you continue to operate the unit under abnormal situation.

● Please contact your agent for maintenance. Improper self maintenance may cause

electric shock and fire.

●

Please contact your agent if you need to remove and reinstall the unit. Electric shock or fire may occur if you remove and reinstall the unit yourself improperly.

PRECAUTIONS DURING OPERATION

●

Avoid an extended period of direct air flow for your health.

●

Do not put objects like thin rods into the panel of blower and suction side because the high-speed fan inside may cause danger.

●

Do not use any conductor as fuse wire, this could cause fatal accident.

●

During thunder storm, disconnect and turn off the circuit breaker.

– 8 –

PRECAUTIONS DURING OPERATION

● The product shall be operated under the manufacturer specification and not

for any other intended use.

●

Do not attempt to operate the unit with wet hands, this could cause fatal accident.

● When operating the unit with burning equipments, regularly ventilate the

room to avoid oxygen insufficiency.

●

Do not direct the cool air coming out from the air-conditioner panel to face household heating apparatus as this may affect the working of apparatus such as the electric kettle, oven etc.

● Please ensure that outdoor mounting frame is always stable, firm and without

defect. If not, the outdoor unit may collapse and cause danger.

●

Do not splash or direct water to the body of the unit when cleaning it as this may cause short circuit.

● Do not use any aerosol or hair sprays near the indoor unit. This chemical can

C A

adhere on heat exchanger fin and blocked the evaporation water flow to drain pan. The water will drop on tangential fan and cause water splashing out from indoor unit.

● Please switch off the unit and turn off the circuit breaker during cleaning, the

high-speed fan inside the unit may cause danger.

● Turn off the circuit breaker if the unit is not to be operated for a long period.

● Do not climb on the outdoor unit or put objects on it.

●

Do not put water container (like vase) on the indoor unit to avoid water dripping into the unit. Dripping water will damage the insulator inside the unit and causes short-circuit.

● Do not place plants directly under the air flow as it is bad for the plants.

●

When operating the unit with the door and windows opened, (the room humidity is always above 80%) and with the air deflector facing down or moving automatically for a long period of time, water will condense on the air deflector and drips down occasionally. This will wet your furniture. Therefore, do not operate under such condition for a long time.

●

If the amount of heat in the room is above the cooling or heating capability of the unit (for example: more people entering the room, using heating equipments and etc.), the preset room temperature cannot be achieved.

– 9 –

NAMES AND FUNCTIONS OF EACH PART

INDOOR UNIT

Air filter

To prevent dust from coming into the indoor unit. (Refer page 26)

Front panel

Indoor unit indicators

Light indicator showing the operating condition. (Refer page 11)

Horizontal deflector (Air Outlet)

(Refer page 17)

●

Vertical deflector

OUTDOOR UNIT

Remote controller

Send out operation signal to the indoor unit. So as to operate the whole unit. (Refer page 12)

Drain pipe

Condensed water drain to outside.

Connecting cord and insulation pipe for piping

Air inlet (Back and Left side)

Air outlet

In relation to outdoor unit

• Even if operation stops, fan is running for 10 to 60 seconds to reduce heat

of electric components.

MODEL NAME AND DIMENSIONS

MODEL

RAS-18CP5 / RAS-24CP5

RAC-24CP5 RAC-18CP5

WIDTH (mm)

1030

850 750

– 10 –

HEIGHT (mm)

295 650 570

DEPTH (mm)

183 298 280

INDOOR UNIT INDICATORS

HITACHI

OPERATION INDICATOR

OPERATION LAMP

This lamp lights during operation.

TIMER LAMP

This lamp lights when the timer is working.

FILTER LAMP

When the device is operated for a total of about 100 hours, the FILTER lamp lights to indicate that it is time to clean the filter. The lamp goes out when the power switch set to OFF and ON again.

● This figure shows the opening condition of

front panel. Refer to page 25 in relation to how to open or close the front panel.

AUTO RESTART SWITCH

AUTO

RESTART

SWITCH

AUTO RESTART SWITCH

● In the event of power failure, the air conditioner will restart automatically in the previously selected mode once

the power is restored.

● In the event of power failure during TIMER operation, the timer will be reset and the unit will begin or stop

operating under a new timer setting.

– 11 –

NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT

REMOTE CONTROLLER

This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is controlled electronically, the range of control may be shorter. This unit can be fixed on a wall using the fixture provided. Before fixing it, make sure the indoor unit can be controlled from the remote controller.

●

Signal emitting window/transmission sign

RESET

AUTO COOL DEHUMIDIFY CIRCULATION FAN

FAN SPEED LOW

MED HI

SLEEPING STOP (CANCEL) START (RESERVE) START/STOP TIME TIMER SET

TIMER SELECTOR ON TIMER OFF TIMER

AUTO SWING

Point this window toward the indoor unit when controlling it. The transmission sign blinks when a signal is sent.

●

Display

This indicates the room temperature selected, current time, timer status, function and intensity of circulation selected.

●

START/STOP button

Press this button to start operation. Press it again to stop operation.

●

SLEEP button

Use this button to set the sleep timer.

●

TEMPERATURE button

Use this button to raise or lower the temperature setting. (Keep pressed, and the value will change more quickly.)

●

OFF-TIMER button Select the turn OFF time.

●

ON-TIMER button Select the turn ON time.

●

TIME button

Use this button to set and check the time and date.

●

RESET button

●

FUNCTION selector

Use this button to select the operating mode. Every time you press it, the mode will change from (AUTO) to (COOL) to (DEHUMIDIFY) to (CIRCULATION) and to (FAN) cyclically.

●

FAN SPEED selector

This determines the fan speed. Every time you press this button, the intensity of circulation will change from (AUTO) to (HI) to (MED) to (LOW) (during the (FAN) mode, from HI to MED to LOW).

●

AUTO SWING button

Controls the angle of the horizontal air deflector.

●

TIMER control

Use this button to set the timer.

●

RESERVE button Time setting reservation.

●

CANCEL button Cancel time reservation.

Precautions for Use

●

Do not put the remote controller in the following places.

●

Under direct sunlight.

●

In the vicinity of a heater.

●

Handle the remote controller carefully. Do not drop it on the floor, and protect it from water.

●

Once the outdoor unit stops, it will not restart for about 3 minutes (unless you turn the power switch off and on or unplug the power cord and plug it in again). This is to protect the device and does not indicate a failure.

●

If you press the FUNCTION selector button during operation, the device may stop for about 3 minutes for protection.

– 12 –

AUTOMATIC OPERATION

The device will automatically determine the mode of operation COOL, or Dehumidify, depending on the initial room temperature. The selected mode of operation will not change when the room temperature varies.

Press the FUNCTION selector so that the display indicates the (AUTO) mode of operation.

● When AUTO has been selected, the device will

automatically determine the mode of operation COOL or Dehumidify, depending on the initial room temperature and outdoor temperature.

RESET

START

STOP

■ As the settings are stored in memory in the remote controller, you

Press the Operation starts with a beep. Press the button again to stop operation.

only have to press the

You can raise or lower the temperature setting as necessary by maximum of 3°C.

°C

● The preset temperature and the actual room temperature may

vary somewhat depending on conditions.

● The display does not indicate the preset temperature in the

AUTO mode. If you change the setting, the indoor unit will produce a beep.

(START/STOP) button.

(START/STOP) button next time.

Press the temperature button and the temperature setting will change by 1°C each time.

■ CONDITION OF AUTOMATIC OPERATION

● The selected mode of operation will not change during the operation even though the room temperature

change.

INITIAL ROOM

TEMPERATURE (APPROX.)

Over 27°C COOL

16~27°C

FUNCTION

DEHUMIDIFY

– 13 –

TEMPERATURE

SETTING

27°C

Slightly lower than the room temperature

FAN SPEED

HIGH at start, LOW after the preset temperature is reached.

LOW

COOLING OPERATION

Use the device for cooling when the outdoor temperature is 22-42°C. If indoor humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit.

Press the FUNCTION selector so that the display indicates

(COOL).

RESET

Set the desired FAN SPEED with the (the display indicates the setting).

(AUTO): The FAN SPEED is HI at first and varies to

MED automatically when the preset temperature

(HI) : Economical as the room will become cool

(MED) : Quiet. (LOW) : More quiet.

Set the desired room temperature with the TEMPERATURE button (the display indicates the setting).

START

STOP

The temperature setting and the actual room temperature may vary some how depending on conditions.

Press the with a beep. Press the button again to stop operation. The cooling function does not start if the temperature setting is

higher than the current room temperature (even though the (OPERATION) lamp lights). The cooling function will start as soon as you set the temperature below the current room temperature.

has been reached.

quickly.

The range of 25-28°C is recommended as the room temperature for cooling. If the temperature setting is 27°C, the room temperature will be controlled at around 27°C.

(START/STOP) button. Cooling operation starts

(FAN SPEED) button

■ As the settings are stored in memory in the remote controller, you

only have to press the

– 14 –

(START/STOP) button next time.

DEHUMIDIFYING OPERATION

Use the device for dehumidifying when the room temperature is over 16°C. When it is under 15°C, the dehumidifying function will not work.

Press the FUNCTION selector so that the display indicates

(DEHUMIDIFY). The FAN SPEED is set at LOW automatically. The FAN SPEED button does not work.

Set the desired room temperature with the TEMPERATURE button (the display indicates the setting).

The range of 20-26˚C is recommended as the room temperature for dehumidifying.

RESET

START

STOP

■ As the settings are stored in memory in the remote controller,

Press the (START/STOP) button. Dehumidifying operation starts with a beep. Press the button again to stop operation.

you only have to press the

(START/STOP) button next time.

■ Dehumidifying Function

When the room temperature is higher than the temperature setting: The device will dehumidify the room, reducing the room temperature to the preset level. When the room temperature is lower than the temperature setting: Dehumidifying will be performed at the temperature setting slightly lower than the current room temperature, regardless of the temperature setting. The function will stop (the indoor unit will stop emitting air) as soon as the room temperature becomes lower than the setting temperature.

– 15 –

FAN OPERATION

You can use the device simply as an air circulator. Use this function to dry the interior of the indoor unit at the end of summer.

Press the FUNCTION selector so that the display

indicates

(FAN).

RESET

CIRCULATION OPERATION

START

STOP

1 2

Press the

Press the with a beep. Press the button again to stop operation.

Press the FUNCTION selector so that the display indicates

(CIRCULATE).

Press the FAN SPEED button and select the desired FAN SPEED (the display indicates your choice).

(FAN SPEED) button.

(START/STOP) button. Fan operation starts

RESET

Press the temperature control button to set to the desired

START

STOP

temperature.

Press the starts with a beep. Press the button again to stop operation.

■ As the settings are stored in memory in the remote controller,

you only have to press the time.

(START/STOP) button. Circulating operation

(START/STOP) button next

– 16 –

ADJUSTING THE AIR DEFLECTOR

Adjustment of the conditioned air in the upward and downward directions.

The horizontal air deflector is automatically set to the proper angle suitable for each operation. The deflector can be swung up and down continuously and also set to the desired angle using the “ (AUTO SWING)” button.

● If the “ (AUTO SWING)” button is pressed once,

the horizontal air deflector swings up and down. If the button is pressed again, the deflector stops in its current position. Several seconds (about 6 seconds) may be required before the deflector starts to move.

● Use the horizontal air deflector within the adjusting range

shown on the right.

● When the operation is stopped, the horizontal air deflector

moves and stops at the position where the air outlet closes.

RESET

CAUTION

● In “Cooling” operation, do not keep the horizontal air

deflector swinging for a long time. Some dew may form on the horizontal air deflector and dew may drop.

Adjustment of the conditioned air to the left and right. Hold the vertical air deflector as shown in the figure and adjust

the conditioned air to the left and right.

When cooling dehumidifying

– 17 –

HOW TO SET THE TIMER

RESET

Time, Day, Month

TIME, DAY, MONTH

After you change the batteries;

(current time, day, month)

OFF TIMER

ON TIMER

OFF-Timer

RESERVE CANCEL

Start

You can set the device to turn off at the present time.

ON-Timer

● The device will turn on at

the designated times.

M D

STOP

Stop

Set the current month and

day with the TIMER control button.

M D

Press the (OFF-TIMER)

button. The (OFF) mark blinks on the display.

Start

Press the (ON-TIMER)

button the (ON) mark blinks on the display.

ON/OFF-Timer

Start Stop

● The device will turn on (off) and off (on) at the designated times.

● The switching occurs first at the preset time that comes earlier.

● The arrow mark appearing on the display indicates the sequence of switching operations.

Press the (ON-OFF)

button so that the (OFF) mark blinks.

Set the turn-off time

with the TIMER control button. Press the (RESERVE) button.

Press the (ON-

TIMER) button so that the (OFF) mark lights and the (ON) mark blinks.

How to Cancel Reservation

Point the signal window of the remote controller toward the indoor unit, and press the (CANCEL) button. The (RESERVED) sign goes out with a beep and the (TIMER) lamp turns off on the indoor unit.

NOTE

You can set only one of the OFF-timer, ON-timer and ON/OFF-timer.

– 18 –

Press the

(TIME) button.

AM PM PM

Set the turn-off time with the

TIMER control button.

Set the current time with the

Example: The current time is 1:30 p.m.

Point the signal window of the remote controller toward the indoor unit, and

press the (RESERVE) button. The (OFF) mark starts lighting instead of flashing and the sign (RESERVED) lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.

Press the (TIME) button again.

The time indication starts lighting instead of flashing.

● The time indication will disappear

● To check the current time setting,

automatically in 10 seconds.

press the (TIME) button twice. The setting of the current time is

now complete.

Set the turn-on time with the

TIMER control button.

Set the turn-on time with the

TIMER control button.

The setting of turn-off time is now complete.

Point the signal window of the remote controller toward the indoor unit, and

press the (RESERVE) button. The (ON) mark starts lighting instead of flashing and the (RESERVED) sign lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.

Example:

Point the signal window of the remote controller toward the indoor unit, and

press the (RESERVE) button. The (ON) mark starts lighting instead of flashing and the (RESERVED) sign lights. A beep occurs and the (TIMER) lamp lights on the indoor unit.

The device will automatically turn on earlier so that the preset temperature can be reached at 7:00 a.m. The setting of the turn-on time is now complete.

Example: The device will turn off at 10:30 p.m. and then automatically turn on earlier so that the preset temperature can be reached at 7:00 a.m. The settings of the turn-on/off times are now complete.

Example: The device will turn off at 11:00p.m.

● The timer may be used in three ways: off-timer, on-timer, and ON/OFF (OFF/ON)-timer. Set

the current time at first because it serves as a reference.

● As the time settings are stored in memory in the remote controller, you only have to press

the (RESERVE) button in order to use the same settings next time.

– 19 –

+ 44 hidden pages