RAC-51CA3 - Air-conditioner HITACHI - Free user manual and instructions

Product Type	Split Type Air Conditioner (Indoor Unit + Outdoor Unit)
Model (Indoor)	RAS-51CA3 / RAS-63CA3
Model (Outdoor)	RAC-51CA3 (for RAS-51CA3) / RAC-63CA3 (for RAS-63CA3)
Indoor Unit Dimensions (W x H x D)	1030 x 295 x 183 mm
Outdoor Unit Dimensions (RAC-51CA3)	750 x 570 x 280 mm
Outdoor Unit Dimensions (RAC-63CA3)	850 x 650 x 298 mm
Operating Modes	Auto, Cool, Dehumidify, Fan (Circulation)
Fan Speeds	Auto, High, Medium, Low
Remote Control Range	Approximately 7 meters
Timer Functions	ON Timer, OFF Timer, ON/OFF Timer, Sleep Timer (1, 2, 3, 7 hours)
Airflow Direction Adjustment	Vertical (left/right) manual; Horizontal (up/down) auto swing or manual
UV-LED	Built-in UV-LED activated during operation (except Fan mode)
Auto Restart	After power failure, unit restarts automatically in previous mode
Air Filter Type	Washable air filter + Air cleansing and deodorizing filter (washable up to 20 times)
Filter Cleaning Interval	Every 2 weeks (air filter); monthly or sooner for deodorizing filter
Deodorizing Filter Replacement	Recommended every 3-6 months depending on usage
Safety Features	Earth line required, circuit breaker recommended, auto restart, 3-minute restart delay
Operating Temperature Range (Cooling)	Outdoor: 21°C to 43°C; Indoor: above 21°C (recommended)

Frequently Asked Questions - RAC-51CA3 HITACHI

How often should I clean the air filter?

Clean the air filter every 2 weeks. If the filter is dusty, it reduces airflow and cooling efficiency. Use a vacuum or rinse with water and dry in shade.

How do I set the ON/OFF timer?

Press the ON-TIMER or OFF-TIMER button on the remote. Set the desired time using the TIMER CONTROL button, then press RESERVE. The timer lamp on the indoor unit will light up.

What is the UV-LED for?

The UV-LED emits ultraviolet light to help sanitize the air. It turns on automatically during operation (except in Fan mode) and may cycle on and off. Avoid direct eye exposure.

How do I adjust the airflow direction?

Use the AUTO SWING button on the remote to move the horizontal deflector up/down continuously or stop at a desired angle. For left/right adjustment, manually move the vertical deflectors by hand.

Why won't the air conditioner start?

Check if the circuit breaker is ON, the fuse is intact, and the voltage is correct. Also ensure the remote control has fresh batteries and is within range. If the unit stopped recently, wait 3 minutes before restarting (protection feature).

What is the sleep timer and how does it work?

The sleep timer lets you set the unit to turn off after 1, 2, 3, or 7 hours. During cooling or dehumidify mode, the temperature will raise 2°C after 1 hour and fan speed reduces to Low for comfortable sleep. Press the SLEEP button to set.

How do I set the current time on the remote?

Press the TIME button twice until the time display flashes. Use the TIMER CONTROL button to set the hour and minutes, then press TIME again to confirm. The time will stop flashing.

Can I operate the air conditioner without the air filter?

No. Operating without the filter allows dust to enter the unit, which may cause malfunction. Always ensure the filter is installed before use.

What should I do after a power failure?

The unit will automatically restart in the previously selected mode once power is restored. However, if the timer was set, it will be cancelled and you may need to reset it.

How do I use the dehumidify function?

Press the FUNCTION selector until the dehumidify symbol (a water drop) appears. The unit will dehumidify with a fan speed set to Low. It works best when room temperature is above 16°C.

USER MANUAL RAC-51CA3 HITACHI

SPLIT TYPE AIR CONDITIONER

Line drawing of a rectangular air conditioner unit with a circular vent and grid pattern (no text or symbols)

RAC-51CA3
RAC-63CA3

INDOOR UNIT

Line drawing of a cylindrical object with horizontal lines and a small rectangular cutout (no text or symbols)

RAS-51CA3
RAS-63CA3

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.	The sign in the figure indicates prohibition.
Indicates the instructions that must be followed.

- Please keep this manual after reading.

PRECAUTIONS DURING INSTALLATION

WARNING	● 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 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.
CAUTION	● 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.

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

WARNING	● 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

WARNING	● Avoid an extended period of direct air flow for your health.
		● Do not insert a finger, a rod or other objects into the air outlet or inlet. As the fan is rotating at a high speed, it will cause injury. Before cleaning, be sure to stop the operation and turn the breaker OFF.
	● Do not use any conductor as fuse wire, this could cause fatal accident.
		● During thunder storm, disconnect and turn off the circuit breaker.
	● This unit has UV LED which emits ultra violet light.AVOID DIRECT EYE EXPOSURE. [BAT5]

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 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.

INDOOR UNIT

Air filter

To prevent dust from coming into the indoor unit. (Refer page 20)

Front panel

Indoor unit indicators

Light indicator showing the operating condition. (Refer page 5)

Horizontal deflector ● Vertical deflector (Air Outlet)

(Refer page 11)

Remote controller

Send out operation signal to the indoor unit. So as to operate the whole unit. (Refer page 6)

OUTDOOR UNIT

Technical line drawing of a wall-mounted air conditioner unit with fan and side-mounted stand (no text or symbols)

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	WIDTH (mm)	HEIGHT (mm)	DEPTH (mm)
RAS-51CA3/RAS-63CA3	1030	295	183
RAC-63CA3	850	650	298
RAC-51CA3	750	570	280

INDOOR UNIT INDICATORS

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 200 hours, the FILTER lamp lights indicates that it is time to clean the filter. The lamp goes out when the AUTO SWING BUTTON is pressed while the device is on "STANBY MODE".

OPERATION INDICATOR

●This figure shows the opening condition of front panel. Refer to page 19 in relation to how to open or close the front panel.

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.

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

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.

	AUTO
	COOL
	DEHUMIDIFY
	CIRCULATION
	FAN
	FAN SPEEDLOWMEDHI
	SLEEPING
	STOP (CANCEL)
	START (RESERVE)
	START/STOP
	TIME
	TIMER SET
	TIMER SELECTORON TIMEROFF TIMER
	AUTO SWING

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.

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.

Press the ① (START/STOP) button. Operation starts with a beep. Press the button again to stop operation.

ART TOP

■As the settings are stored in memory in the remote controller, you only have to press the ① (START/STOP) button next time.

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

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

●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.

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

INITIAL ROOM TEMPERATURE (APPROX.)	FUNCTION	TEMPERATURE SETTING	FAN SPEED
Over 27°C COOL	→	27°C	HIGH at start, LOW after the preset temperature is reached.
16~27°C	→ DEHUMIDIFY	Slightly lower than the room temperature	LOW

Use the device for cooling when the outdoor temperature is 21-43°C.

If indoor humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit.

As the settings are stored in memory in the remote controller, you only have to press the ① (START/STOP) button next time.

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.

■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.

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.

FAN SPEED (AUTO)

…… When the AUTO fan speed mode is set in the cooling operation:

For the cooling operation

• When the difference of room temperature and setting temperature is large, fan starts to run at HI speed.
  ●After room temperature reaches the preset temperature, the cooling operation, which changes the fan speed and room temperature to obtain optimum conditions for natural healthful cooling will be performed.

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.

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.

Line drawing of a hand pressing down on an air conditioner panel with a curved arrow indicating rotation (no text or symbols)

CAUTION

- When operating the unit in cooling operation with the air deflector facing down and moving automatically for a long period of time, water will condensed on the air deflector and drips down occasionally. This will wet your furniture.

Time, Day, Month

After you change the batteries;

OFF-Timer

1 Press the _② (OFF-TIMER) button. The (OFF) mark blinks on the display.

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

ON-Timer

●The device will turn on at the designated times.

1 Press the ☐ (ON-TIMER) button the ☐ (ON) mark blinks on the display.

ON/OFF-Timer

●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.

1 Press the _ON-OFF button so that the (OFF) mark blinks.

2 Set the turn-off time with the TIMER control button. Press the I (RESERVE) button.

3 Press the I (ON-TIMER) button so that the ○ (OFF) mark lights and the I (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.

2 Press the ⏻ (TIME) button.

3 Set the current time with the TIMER control button.

4 Press the Ⓤ (TIME) button again. The time indication starts lighting instead of flashing.

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

●The time indication will disappear automatically in 10 seconds.

●To check the current time setting, press the Ⓞ (TIME) button twice.

The setting of the current time is now complete.

2 Set the turn-off time with the TIMER control button.

3 Point the signal window of the remote controller toward the indoor unit, and press the I (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.

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

The setting of turn-off time is now complete.

2 Set the turn-on time with the TIMER control button.

3 Point the signal window of the remote controller toward the indoor unit, and press the I (RESERVE) button.

The I (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:

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.

4 Set the turn-on time with the TIMER control button.

5 Point the signal window of the remote controller toward the indoor unit, and press the I (RESERVE) button.

The I (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:

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.

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

Set the current time first if it is not set before (see the pages for setting the current time). Press the ☐ (SLEEP) button, and the display changes as shown below.

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.

Explanation of the sleep timer

The device will control the FAN SPEED and room temperature automatically so as to be quiet and good for people's health.

You can set the sleep timer to turn off after 1, 2, 3 or 7 hours. The FAN SPEED and room temperature will be controlled as shown below.

Operation with the sleep timer

Function Operation
Cooling“ *”anddehumidifying“ ◊”	The room temperature will be controlled 2°C above the temperature and the FAN SPEED will be set to LOW setting 1 hour after the setting of the sleep timer.
Fan“ + ”	The settings of room temperature and circulation are varied.

NOTE

• If date or current time is not set, sleep timer can not be set.
• If you set the sleep timer after the off-, on/off- or off/on-timer has been set, the sleep timer becomes effective instead of the off-, on/off- or off/on-timer set.
• You can not set other timer during sleep timer operation.
• The angle of horizontal air deflector shifts up automatically after three hours on sleep timer operation.
  ●Fan will stop for a while if room temperature reaches setting temperature.

1 Remove the cover as shown in the figure and take out the old batteries.

2 Install the new batteries. The direction of the batteries should match the marks in the case.

CAUTION

1. Do not use new and old batteries, or different kinds of batteries together.
2. Take out the batteries when you do not use the remote controller for 2 or 3 months.

Suitable Room Temperature Ins

Simple line drawing of a person with wavy lines indicating discomfort or stress (no text or symbols)

Warning

Freezing temperature is bad for health and a waste of electric power.

curtain or blinds

Illustration of a person standing near a window with curtains, no text or symbols present

It is possible to reduce heat entering the room through windows.

Ventilation Effective Us

Caution

Do not close the room for a long period of time. Occasionally open the door and windows to allow the

entrance of fresh air.

Illustration of a person hanging from a window with curtains (no text or symbols)

Of Timer

At night, please use the "OFF or ON timer operation mode", together with your wake up time in the morning. This will enable you to enjoy a comfortable room temperature. Please use the timer effectively.

Do Not Forget To Clean The Air Filter

Dusty air filter will reduce the air volume and the cooling efficiency. To prevent from wasting electric energy, please clean the filter every 2 weeks.

Simple line drawing of a vacuum cleaner on a grid base with smoke and motion lines (no text or symbols)

Please Adjust Suitable Temperature For Baby And Children

Please pay attention to the room temperature and air flow direction when operating the unit for baby, children and old folks who have difficulty in movement.

The Air Conditioner And The Heat Source In The Room

Caution

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

Simple line drawing of a steam locomotive emitting exhaust smoke next to a cylindrical container with liquid droplets (no text or symbols)

Not Operating For A Long Time

When the indoor unit is not to be used for a long period of time, please switch off the power from the mains. If the power from mains remains "ON", the indoor unit still consumes about 8W in the operation control circuit even if it is in "OFF" mode.

When Lightning Occurs

Warning

To protect the whole unit during lightning, please stop operating the unit and remove the plug from the socket.

Simple line drawing of an air conditioner emitting sound waves (no text or symbols)

UV-LED

UV-LED will be "ON" when the START/STOP button is pressed except for FAN only operation. During selected operation, this UV-LED will be "ON" and "OFF". Light UV glare is visible when the UV-LED is "ON" and this is normal (not malfunction).

Interference From Electrical Products

Caution

To avoid noise interference, please place the indoor unit and its remote controller at least 1m away from electrical products.

CAUTION

Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning, stop operation and switch off the power supply.

Open the front panel.

●Pull up the front panel by holding it at both sides with both hands.

Illustration of hands holding a flatbed air conditioner cover with arrows indicating fold direction (no text or symbols)

Remove the filter.

●Push upward to release the claws and pull out the filter.

Line drawing of a hand pressing down on a device panel with a downward arrow indicating motion (no text or symbols)

Attaching the air cleansing and deodorizing filters to the filter.

- Attach the air cleansing and deodorizing filters to the frame by gently compress its both sides and release after insertion into filter frame.

CAUTION

Do not bend the air cleansing and deodorizing filter as it may cause damage to the structure.

Line drawing of a hand inserting a component into a curved panel (no text or symbols)

Attach the filters.

- Attach the filters by ensuring that the surface written "FRONT" is facing front.

●After attaching the filters, push the front panel at three arrow portion as shown in figure and close it.

Diagram of a cylindrical object with internal components and directional arrows indicating flow or movement (no text or symbols)

NOTE

• In case of removing the air cleansing and deodorizing filters, please follow the above procedures.
• The cooling capacity is slightly weakened and the cooling speed becomes slower when the air cleansing and deodorizing filters are used. So, set the fan speed to "HIGH" when using it in this condition.
• Air cleansing and deodorizing filters are washable and reusable up to 20 times by using vacuum cleaner or water rinse under running tap water. Type number for this air cleansing filter is . Please use this number for ordering when you want to renew it.
• Do not operate the air conditioner without filter. Dust may enter the air conditioner and fault may occur.

CAUTION

Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning, stop operation and switch off the power supply.

1. AIR FILTER

Clean the air filter, as it removes dust inside the room. In case the air filter is full of dust, the air flow will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to clean the filter following the procedure below.

PROCEDURE

1

Open the front panel and remove the filter

●Gently lift and remove the air cleansing and deodorizing filter from the air filter frame.

2

Vacuum dust from the air filter and air cleansing and deodorizing filter using vacuum cleaner. If there is too much dust, rinse under running tap water and gently brush it with soft bristle brush. Allow filters to dry in shade.

Simple line drawing of a hand cleaning a textured surface with a car (no text or symbols)

Illustration of hands holding a rectangular device with horizontal stripes and a scroll, showing directional arrows (no text or symbols)

Line drawing of a hand pressing down on a device panel with a black arrow indicating the left side (no text or symbols present)

3

●Re-insert the air cleansing and deodorizing filter to the filter frame. Set the filter with "FRONT" mark facing front, and slot them into the original state.

●After attaching the filters, push the front panel at three arrow portions as shown in figure and close it.

Diagram of a wooden cylindrical object with internal arrows indicating movement or force (no text or symbols)

NOTE:

- Air cleansing and deodorizing filter should be cleaned every month or sooner if noticeable loading occurs. When used overtime, it may lose its deodorizing function. For maximum performance, it is recommended to replace it every 3-6 months depending on application requirements.

CAUTION

• Do not wash with hot water at more than 40°C. The filter may shrink.
• When washing it, shake off moisture completely and dry it in the shade; do not expose it directly to the sun. The filter may shrink.
• Do not use detergent on the air cleansing and deodorizing filter as some detergent may deteriorate the filter electrostatic performance.

2. Washable Front Panel

- Remove the front panel and wash with clean water. - Wash it with a soft sponge. - After using neutral detergent, wash thoroughly with clean water.

- When front panel is not removed, wipe it with a soft dry cloth. Wipe the remote controller thoroughly with a soft dry cloth.

●Wipe the water thoroughly. If water remains at indicators or signal receiver of indoor unit, it causes trouble.

Method of removing the front panel. Be sure to hold the front panel with both hands to detach and attach it.

Line drawing of hands washing a piece of paper or document (no text or symbols present)

Illustration of a person cleaning a wall with a digital remote (no text or symbols)

Removing the Front Panel

Illustration of hands installing or adjusting a wall-mounted air conditioner unit (no text or symbols)

- When the front panel is fully opened with both hands, push the right arm to the inside to release it, and while closing the front panel slightly, put it out forward.

Attaching the Front Panel

- Move the projections of the left and right arms into the Flanges in the unit and securely insert them into the holes.

CAUTION

• Do not splash or direct water to the body of the unit when cleaning it as this may cause short circuit.
• Never use hot water (above 40°C), benzine, gasoline, acid, thinner or a brush, because they will damage the plastic surface and the coating.

CAUTION

Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning, stop operation and switch off the power supply.

3. MAINTENANCE AT BEGINNING OF LONG OFF PERIOD

- Run the unit by setting the operation mode to (COOL), the temperature to 32°C and the fan speed to HI for about half a day on a fine day, and dry the whole of the unit.

●Switch off the power plug.

REGULAR INSPECTION

PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHER EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.

1		Is the earth line disconnected or broken?
2		Is the mounting frame seriously affected by rust and is the outdoor unit tilted or unstable?
3		Is the plug of power line firmly plugged into the socket?(Please ensure no loose contact between them).

WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS.

CONDITION CHECK THE FOLLOWING POINTS
When it does not operate	●Is the fuse all right?●Is the voltage extremely high or low?●Is the circuit breaker “ON”?
When it does not cool wellWhen it does not hot well	●Was the air filter cleaned?●Does sunlight fall directly on the outdoor unit?●Is the air flow of the outdoor unit obstructed?●Are the doors or windows opened, or is there any source of heat in the room?●Is the set temperature suitable?

Illustration of a smiling man in a suit pointing upward with both hands (no text or symbols)

Notes

●In quiet operation or stopping the operation, the following phenomena may occasionally occur, but they are not abnormal for the operation.

(1) Slight flowing noise of refrigerant in the refrigerating cycle. (2) Slight rubbing noise from the fan casing which is cooled and then gradually warmed as operation stops.

●The odor will possibly be emitted from the room air conditioner because the various odor, emitted by smoke, foodstuffs, cosmetics and so on, sticks to it. So the air filter and the evaporator regularly must be cleaned to reduce the odor.

- Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above inspections. Inform your agent of the model of your unit, production number, date of installation. Please also inform him regarding the fault.

- Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not reach the specified capacity.

Please note:

On switching on the equipment, particularly when the room light is dimmed, a slight brightness fluctuation may occur. This is of no consequence.

The conditions of the local Power Supply Companies are to be observed.

Note

- Avoid to use the room air conditioner for cooling operation when the outside temperature is below 21°C (70°F).

The recommended maximum and minimum operating temperatures of the hot and cold sides should be as below:

		Minimum Maximum
Indoor Dry bulb °C	2	1	3
Wet bulb °C		1	5
Outdoor Dry bulb °C		2	1
Wet bulb °C		1	5

2
2 3
3
2 6

MEMO