HITACHI RAK-CJ18PCASM Air Conditioner Instruction Manual

OPERATION
MANUAL
air HOME
ROOM AIR CONDITIONER
SPLIT TYPE
CJ SERIES
MODELS
RAK-CJ18PCASM/RAC-CJ18PCASM
RAK-CJ24PCASM/RAC-CJ24PCASM
Instruction Manual

INDOOR UNIT
RAK-CJ18PCASM
RAK-CJ24PCASM

RAK-CJ18PCASM Air Conditioner

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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.
  The sign in the fi gure indicates prohibition.

• Please keep this manual after reading.

EXPLANATION OF SYMBOLS DISPLAYED ON UNIT

Warning ”| This symbol shows that this equipment uses a flammable refrigerant.
If the refrigerant is leaked, together with an external ignition source, there is a possibility of ignition.| Caution| This symbol shows that a service personnel should be handling this equipment with reference to the Installation Manual.
---|---|---|---
Caution ”| This symbol shows that the Operation Instructions should be read carefully.| Caution| This symbol shows that there is  information included in the Operation Manual and/or Installation Manual

PRECAUTIONS DURING INSTALLATION

WARNING

• Do not reconstruct the unit.
  Water leakage, fault, short circuit or fi re may occur if you reconstruct the unit by yourself.

• Please ask your sales agent or qualia ed technician for the installation of your unit. Water leakage, short circuit or fi re 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

• Be sure to use the specifi ed piping set for R32. Otherwise, this may result in broken copper pipes or faults.
• 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 the unit near a location where there is fl ammable gas. The outdoor unit may catch fi re if fl ammable gas leaks around it.
• Please ensure smooth fl ow 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 fi re 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 fi re may occur if you remove and reinstall the unit yourself improperly.
• If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service/parts centers.
• If the air conditioner is not cool, one possible cause could be due to refrigerant leakage, so consult your dealer.
  The refrigerant gas used in the air conditioner is harmless. But if refrigerant gas leaks into the room, harmful products are generated when in contact with fi re from appliances such as a stove heater.
  When there is refrigerant gas accumulation in the room, immediately stop the air conditioner. Open the windows for ventilation and contact your agent.

PRECAUTIONS DURING OPERATION

• Avoid an extended period of direct air fl ow 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.

• The product shall be operated under the manufacturer specifi cation and not for any other intended use.

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

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

• 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, fi rm 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 fi n 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 fl ow 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 defl ector facing down or moving automatically for a long period of time, water will condense on the air defl ector 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 persons (including children) who are physically handicapped sensory or mental or lack of experience and knowledge. Unless supervised or instructed on the use of electrical appliances by persons responsible for their safety.

NAMES AND FUNCTIONS OF EACH PART

INDOOR UNIT

OUTDOOR UNIT

MODEL NAME AND DIMENSIONS

INDOOR UNIT INDICATORS

TEMPORARY SWITCH
Use this switch to start and stop when the remote controller does not work.

• By pressing the temporary switch, the operation is done in automatic 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.

NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT

REMOTE CONTROLLER
This controls the operation of the indoor unit. Signal range to reach indoor unit is about 7 meters. If inverter lamp is used, the range of control may be shorter.
This unit can be fi xed on a wall using the fi xture provided. Before fi xing it, make sure the indoor unit can be controlled from the remote controller.

Precautions for Use

• Do not put the remote controller in the following places.
• In 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.

THE IDEAL WAYS OF OPERATION

Suitable Room Temperature

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

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.

Effective Usage Of Timer

At night, please use the “OFF or ON timer or 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.

Install curtain or blinds

It is possible to reduce heat entering the room through windows.
Do Not Forget To Clean The Pre-Filter

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

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.

FOR USER’S INFORMATION

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.

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 2.5W 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.

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.

ATTACHING THE AIR PURIFYING FILTERS

CAUTION!
Before cleaning, stop operation and switch off the power supply.

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

2. Remove the Pre-filter
   ● Push upward to release the claws and pull out the Pre-filter.

3. Attaching the air purifying filters
   ● Attach the air purifying filters to the frame by gently compress its both sides and release after insertion into Pre-filter frame. Honeycomb surface shall be on the front side and fl at surface shall be on the back side when insert (only for the purifying filter with a flat surface). CAUTION
   Do not bend the air purifying filter as it may cause damage to the structure.
   Please do not smell direct from source of filter.

4. Attach the Pre-filters
   ● Attach the Pre-filters by ensuring that the surface written “FRONT” is facing front.
   ● After attaching the Pre-filters, push the front panel at three arrow portions as shown in fi gure and close it.

NOTE

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

MAINTENANCE

CAUTION
Before cleaning, stop operation and switch off the power supply.

PRE-FILTER
Clean the Pre-filter, as it removes dust inside the room. In case the Pre- 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 Pre-filter following the procedure below.

PROCEDURE

1. Open the front panel and remove the Pre-filter
   ● Gently lift and remove the air purifying filters from the air purifying filter frame.

2. Vacuum dust from the Pre-filter and air purifying filter using vacuum cleaner. If there is too much dust, wipe the filter with wet cloth or sponge.
   Allow filters to dry in shade.

3. ● Re-insert the air purifying filter to the filter frame. Set the Pre-filter with “FRONT” mark facing front, and slot them into the original state.
   ● After attaching the Pre-filters, push the front panel at three arrow portions as shown in fi gure and close it.

NOTE:
● Air purifying 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 1 year depending on application requirements.

CAUTION
● Do not operate the air conditioner without Pre-filter. Dust may enter the air conditioner and fault may occur.

CLEANING OF 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

• 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, pull 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

• Never use hot water (above 40°C), benzine, gasoline, acid, thinner or a brush, because they will damage the plastic surface and the coating.

WIRING ARRANGEMENT

CAUTION

• 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.
  IMPORTANT
  The wires in this mains lead are coloured in accordance with the following code:
  Green-and-yellow : Earth
  Blue : Neutral
  Brown : Live
  As the colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:
  The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol or coloured green or green-and-yellow.
  The wire which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black.
  The wire which is coloured brown must be connected to the terminal which is marked with the letter L or coloured red.
  NOTE
  If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service/parts enters.

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

REGULAR INSPECTION

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

outdoor unit tilted or unstable?
3| | Is the plug of power line fi rmly  plugged into the socket?
(Please ensure no loose contact between them).

AFTER SALE SERVICE AND WARRANTY

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 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?

Notes

• In quiet or stop operation, the following phenomena may occassionally 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 for the model of your unit, serial 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 specifi ed 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| 21| 32
  Wet bulb °C| 15| 23
  Outdoor| Dry bulb °C| 21| 46
  Wet bulb °C| 15| 26

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