RAC-80YHA - Air-conditioner HITACHI - Free user manual and instructions

Product Type	Split Air Conditioner
Model	RAC-80YHA
Brand	Hitachi
Cooling Capacity	7.0 kW (24000 BTU/h)
Heating Capacity	8.0 kW (27300 BTU/h)
Power Supply	230V / 50Hz / 1 Phase
Dimensions (Indoor Unit)	1100 x 320 x 240 mm
Weight (Indoor Unit)	14 kg
Dimensions (Outdoor Unit)	900 x 750 x 340 mm
Weight (Outdoor Unit)	55 kg
Refrigerant Type	R410A
Energy Efficiency Ratio (EER)	3.2
Sleep Mode	Yes
Timer	24-hour On/Off Timer
Remote Control	Infrared, with LCD Display
Filter Type	Washable, Anti-Allergy
Filter Cleaning Indicator	Yes
Auto Restart	Yes
Child Lock	Via Remote Control
Noise Level (Indoor)	31-48 dB(A)
Noise Level (Outdoor)	55-62 dB(A)
Drainage	Condensate Pump Included
Maintenance	Clean filter every 2 weeks; Professional service annually
Spare Parts Availability	Through authorized Hitachi service centers
Safety Features	Overload protection, Short circuit protection, Anti-freeze protection

Frequently Asked Questions - RAC-80YHA HITACHI

What does the error code on the display mean?

Error codes indicate specific malfunctions. Refer to the manual's troubleshooting section for a list of codes and solutions. Common codes include E1 (sensor fault) and E2 (freeze protection). If the issue persists, contact a Hitachi service center.

How often should I clean the air filter?

Clean the filter every two weeks under normal use. Remove the filter, vacuum or wash with mild soap, and dry completely before reinserting. A dirty filter reduces cooling efficiency and airflow.

Can I install the air conditioner myself?

Installation should be performed by a qualified professional. It requires proper refrigerant handling, electrical connections, and drainage. Incorrect installation may void the warranty and cause safety hazards.

What should I do if the unit is not cooling?

Check if the filter is clean, the thermostat is set correctly, and the outdoor unit has clearance. Ensure the remote control is in cooling mode. If still not cooling, there may be a refrigerant leak or compressor issue; call a technician.

How do I set the timer?

Press the TIMER button on the remote control. Use the up/down arrows to set the desired on or off time. Press SET to confirm. The unit will start/stop automatically at the programmed time.

What is the recommended temperature range?

For cooling, set between 22-26°C (72-78°F). For heating, 20-24°C (68-75°F). Avoid extreme settings to save energy and prevent overloading the compressor.

Does the unit have a sleep mode?

Yes, press the SLEEP button on the remote. This mode gradually adjusts the temperature during the night for comfort and energy savings. The fan speed also reduces for quieter operation.

How do I use the remote control?

Insert two AAA batteries. Point the remote at the indoor unit. Use the MODE button to select Cool, Heat, Fan, or Dry. Adjust temperature with +/- buttons. The LCD displays settings.

What type of maintenance does the outdoor unit require?

Keep the area around the outdoor unit free of debris and vegetation. Clean the condenser coils annually with a soft brush or vacuum. Ensure the drain hole is not blocked.

Where can I find spare parts?

Contact an authorized Hitachi service center or visit the official Hitachi website. Common spare parts include filters, remote controls, and fan motors. Use original parts for safety and performance.

USER MANUAL RAC-80YHA HITACHI

Technical line drawing of a rectangular electronic component with horizontal slats and a central slot (no text or symbols)

OUTDOOR UNIT

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RAC-80YHA

RAS-80YHA

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.

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.
• This appliance is not intended for use by young children or infirm persons unless they have been adequately supervised by a responsible person to ensure that they can use the appliance safely.
• Young children should be supervised to ensure that they do not play with the appliance.

INDOOR UNIT

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AIR FILTER

To prevent dust from coming into the indoor unit.

(Refer page 21)

FRONT PANEL (AIR INLET).

INDOOR UNIT INDICATORS

Light indicator showing the operating condition.

(Refer page 5)

HORIZONTAL DEFLECTOR • VERTICAL DEFLECTOR (AIR OUTLET)

(Refer page 16)

REMOTE CONTROLLER

Send out operation signal to the indoor unit. So as to operate the whole unit.

(Refer page 6)

OUTDOOR UNIT

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AIR INLET (BACK, LEFT SIDE)

AIR OUTLET

Blow out warm air.

MODEL NAME AND DIMENSIONS

MODEL	WIDTH (mm)	HEIGHT (mm)	DEPTH (mm)
RAS-80YHA	1150	333	245
RAC-80YHA	925	875	315

OPERATION INDICATOR

Use this switch to start and stop when the remote controller does not work. [Use non-conductor stick (example toothpick)]

- By pressing the temporary switch, the operation is done in previously set operation mode.

- When the operation is done using the temporary switch after the power source is turned off and turn on again, the operation is done in automatic mode.

INDOOR UNIT INDICATORS

TIMER LAMP

This lamp lights when the timer is working.

OPERATION LAMP

This lamp lights during operation.

The OPERATION LAMP flashes in the following cases during heating.

(1) During preheating

For about 2–3 minutes after starting up.

(2) During defrosting

Defrosting will be performed about once an hour when frost forms on the heat exchanger of the outdoor unit, for 5–10 minutes each time.

FILTER LAMP

When the device is operated for a total of about 200 hours, the FILTER lamp lights to indicate that it is time to clean the filter. The lamp goes out when the “(AUTO SWING)” button is pressed while the device is on “STANDBY MODE”.

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.

■ Auto Restart Control

• If there is a power failure, operation will be automatically restarted when the power is resumed with previous operation mode and airflow direction.
  (As the operation is not stopped by remote controller.)
• If you intend not to continue the operation when the power is resumed, switch off the power supply. When you switch on the circuit breaker, the operation will be automatically restarted with previous operation mode and airflow direction.
  Note: 1. If you do not require Auto Restart Control, please consult your sales agent or OFF by remote control.
• Auto Restart Control is not available when Timer or Sleep Timer mode is set.

AUTOMATIC OPERATION

The device will automatically determine the mode of operation, HEAT, COOL or DEHUMIDIFY depending on the current room temperature. The selected mode of operation will change when the room temperature varies.

■Condition of Automatic Operation

Initial room temperature (approx.)		Temperature settingFunction	FAN SPEED
Over 27°C COOL→		27°C	HI at start, MED or LOW after the preset temperature is reached
23~27°C →	DEHUMIDIFY	Slightly lower than the room temperature	LOW
Under 23°C HEAT→		23°C	HI at start, MED or LOW after the preset temperature is reached

- Use the device for heating when the outdoor temperature is under 21°C.

When it is too warm (over 21^ C), the heating function may not work in order to protect the device.

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.

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

If humidity is very high (over 80^ C) indoors, 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 Ⓞ (START/STOP) button next time.

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/heating operation:

For the heating operation	●The fan speed will automatically change according to the temperature of discharged air.●When the difference of room temperature and setting temperature is large, fan starts to run at HI speed.●When the room temperature reaches setting temperature, fan speed changes to LOW automatically.
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.

Time, Day, Month

After you change the batteries;

1 Set the current month and day with the TIMER control button.

OFF-Timer

1 Press the ○ (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 I^② (ON-TIMER) button the I (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 ☐ (ON-TIMER) button so that the ○ (OFF) mark lights and the I (ON) mark blinks. PM 10:30 → AM 6:00

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 second.

●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 at 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.

Sleep Timer: The device will continue working for the designated number of hours and then turn off.

Point the signal window of the remote controller toward the indoor unit, and press the SLEEP button.

The timer information will be displayed on the remote controller. The TIMER lamp lights with a beep from the indoor unit. When the sleep timer has been set, the display indicates the turn-off time.

Example: If you set 3 hours sleep time at 11:38 p.m., the turn-off time is 2:38 a.m.

The device will be turned off by the sleep timer and turned on by on-timer.

1 Set the ON-timer.

2 Press the ☐ (SLEEP) button and set the sleep timer.

Example:

In this case, the device will turn off in 2 hours (at 1:38 a.m.) and turn on early so that the preset temperature will be almost reached at 6:00 next morning.

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.

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 earlier.
  ●You can not set other timer during sleep timer operation.
  ●After sleep timer time is up and when press sleep button again, the sleep timer will be set as last setting.
  ●Sleep timer effective only once.

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 “X” (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 and vertical air deflector swinging for a long time. Some dew may form on the horizontal and vertical air deflector and dew may drop.

Adjustment of the conditioned air in the left and right directions.

• If the “☐ (PARALLEL SWING)” button is pressed once, the vertical air deflectors swing left and right to parallel. If the button is pressed again, the deflectors stop in their current position. Several second (about 6 seconds) may be required before the deflectors start to move.
• If the “ □ (SYMMETRY SWING) button is pressed once, the vertical air deflectors swing left and right to symmetry. If the button is pressed again, the deflectors stop in their current position. Several seconds (about 6 seconds) may be required before the deflectors start to move.

●PARALLEL SWING

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●SYMMETRY SWING

Technical line drawing of a mechanical component with internal channels and mounting holes (no text or symbols)

Technical illustration of a mechanical component with internal cavities and mounting holes (no text or symbols)

Horizontal air deflector

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

Illustration of a person with wavy lines indicating discomfort or pain (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 "sleep 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.

Illustration of a vacuum cleaner cleaning a tray with smoke and spray (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 steamroller emitting exhaust smoke next to a cylindrical container (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 with sound waves and a speaker (no text or symbols)

UV-LED

UV-LED will be "ON" when the START/STOP button is pressed. 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.

Remove the filter.

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

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.

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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.

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NOTE

• In case of removing the air-cleansing & deodorizing filters, please follow the above procedures.
• The cooling capacity is slightly weakened and the cooling speed becomes slower when the air-cleansing & deodorizing filters are used. So, set the fan speed to "HIGH" when using it in this condition.
• Air-cleansing & deodorizing filters are not washable and can be use in 1 year time. Type number for this air cleansing filter is . Please use this number for ordering when you want 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

Open the front panel and remove the filter

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

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.

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Illustration of hands holding a rectangular device with arrows indicating motion or force (no text or symbols)

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●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.

Technical line drawing of a cylindrical mechanical component with two horizontal grooves and directional arrows indicating force or movement (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.

Attaching the minus ion stick to the filter frame.

●Put the minus ion stick to the lower hooks and install it so as to push up the upper hooks at the left side of front cover.

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.

Removing the Front Panel

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- 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.

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Illustration of a person cleaning a wall-mounted device with sparkles (no text or symbols)

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.

Note :

If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

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?

Cartoon 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:

		Cooling Heating
		Minimum Maximum Minimum Maximum
Indoor	Dry bulb °C	2	1	3	2
	Wet bulb °C	1	5	2	3
Outdoor	Dry bulb °C	2	1	4	3
	Wet bulb °C	1	5	2	6

MEMO