HITACHI CH18CAK Room Air Conditioner Instruction Manual

HITACHI CH18CAK Room Air Conditioner

Product Information

Specifications:

• Indoor Unit Model: RAK-CH18CAK
• Outdoor Unit Model: RAR-M0A7
• Refrigerant: R32
• Installation: Requires professional installation

Product Usage Instructions

Safety Precautions :
Before operating the unit, read the Safety Precautions carefully to ensure correct usage:

• Observe all warnings and cautions to prevent serious injury or consequences.
• Connect the earth line properly.
• Do not reconstruct the unit by yourself to avoid water leakage, faults, short circuits, or fire.

Installation Precautions:

• Use the specified piping set for R32 to avoid pipe damage or faults.
• Install a circuit breaker based on the mounting site to prevent electric shock.
• Avoid installing the unit near flammable gas sources to prevent fire hazards.

Maintenance Precautions:

• If abnormal situations like burning smell occur, stop operating the unit and contact your agent.
• Do not attempt self-maintenance to prevent electric shock and fire hazards.
• Contact your agent for unit removal and reinstallation to avoid risks of electric shock or fire.

Frequently Asked Questions

• Q: What should I do if the air conditioner is not cooling?
  A: One possible cause could be refrigerant leakage. Consult your dealer for assistance.

• Q: Can I install the unit by myself?
  A: It is recommended to ask your sales agent or a qualified technician for installation to avoid water leakage, short circuits, or fire hazards.

OPERATION MANUAL

• OUTDOOR UNIT
• ROOM AIR CONDITIONER SPLIT TYPE HFC CH SERIES R32
• MODELS RAK-CH18CAK/RAC-CH18CAK
• Access the full version of the User Operation Manual by scanning the code. https://docs.hitachiaircon.com/ RAK-CH-CAK-RAC-CH-CAK

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 figure indicates prohibition.
• Please keep this manual after reading.

EXPLANATION OF SYMBOLS DISPLAYED ON UNIT

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 qualified 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.
• Be sure to use the specified piping set for R32. Otherwise, this may result in broken copper pipes or faults.

WARNING

• 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 flammable gas. The outdoor unit may catch fi re if flammable 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.

NAMES AND FUNCTIONS OF EACH PART

INDOOR 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 fixed on a wall using the fixture provided. Before fixing 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 fl oor, 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 before 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 filter every 2 weeks.
  • Please Adjust Suitable Temperature For Baby And Children
  • Please pay attention to the room temperature and air fl ow 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 fl at 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.

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 figure 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 fl ow 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 figure 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 centers.

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.

AFTER SALE SERVICE AND WARRANTY

WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS

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 fi lter 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 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| 21| 32
Wet bulb °C| 15| 23
Outdoor| Dry bulb °C| 21| 46
Wet bulb °C| 15| 26

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