Hitachi RAS-70YHA2 User manual

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ENGLISH
INDOOR UNIT/OUTDOOR UNIT
OUTDOOR UNIT
INDOOR UNIT
RAC-70YHA2
RAC-80YHA2
RAS-70YHA2
RAS-80YHA2
MODEL
RAS-70YHA2/RAC-70YHA2
RAS-80YHA2/RAC-80YHA2
Instruction manual Page 1~26
To obtain the best performance and ensure years of trouble free use, please read this instruction
manual completely.
SPLIT TYPE
RAS/RAC-70/80YHA2 EN1 1/22/09, 16:021

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SAFETY PRECAUTION
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Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.
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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.
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Please keep this manual after reading.
WARNING
PRECAUTIONS DURING INSTALLATION
●
Do not reconstruct the unit.
Water leakage, fault, short circuit or fire may occur if you reconstruct the unit by
yourself.
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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.
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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 R410A. Otherwise, this may result in
broken copper pipes or faults.
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A circuit breaker should be installed depending on the mounting site of the unit.
Without a circuit breaker, the danger of electric shock exists.
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Do not install near location where there is flammable gas. The outdoor unit may
catch fire if flammable gas leaks around it.
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Please ensure smooth flow of water when installing the drain hose.
CAUTION
!
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PRECAUTIONS DURING OPERATION
●Avoid an extended period of direct air flow for your health.
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●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.
●During thunder storm, disconnect and turn off the circuit breaker.
●Do not use any conductor as fuse wire, this could cause fatal accident.
Make sure to connect earth line.
Indicates the instructions that must be followed.
The sign in the figure indicates prohibition.
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
●Should abnormal situation arises (like burning smell), please stop operating the unit
and turn off the circuit breaker. Contact your agent. Fault, short circuit or fire may
occur if you continue to operate the unit under abnormal situation.
●Please contact your agent for maintenance. Improper self maintenance may cause
electric shock and fire.
●Please contact your agent if you need to remove and reinstall the unit. Electric
shock or fire may occur if you remove and reinstall the unit yourself improperly.
●If the supply cord is damaged, it must be replaced by the special cord obtainable
at authorized service/parts centers.
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RAS/RAC-70/80YHA2 EN1 1/22/09, 16:022

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ENGLISH
PRECAUTIONS DURING OPERATION
●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.
●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 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.
●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.
●Do not climb on the outdoor unit or put objects on it.
●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.
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●The product shall be operated under the manufacturer specification and
not for any other intended use.
●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.
RAS/RAC-70/80YHA2 EN1 1/22/09, 16:023

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INDOOR UNIT
OUTDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
AIR FILTER
To prevent dust from coming into the indoor unit.
(Refer page 20)
FRONT PANEL (AIR INLET).
INDOOR UNIT INDICATORS
Light indicator showing the operating condition.
(Refer page 5)
HORIZONTAL DEFLECTOR ●VERTICAL
DEFLECTOR (AIR OUTLET)
(Refer page 15)
REMOTE CONTROLLER
Send out operation signal to the indoor unit. So as
to operate the whole unit.
(Refer page 6)
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WIDTH (mm)MODEL
RAS-70YHA2 / RAS-80YHA2
RAC-70YHA2 / RAC-80YHA2
HEIGHT (mm) DEPTH (mm)
MODEL NAME AND DIMENSIONS
1150
850
333
800
245
298
DRAIN PIPE
Condensed water drain to outside.
CONNECTING CORD
AIR INLET (BACK, LEFT SIDE)
AIR OUTLET
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 <SPX-CFH19>. 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.
RAS/RAC-70/80YHA2 EN1 1/22/09, 16:024

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ENGLISH
Press
Press
Temporary Switch
emporary Switch
Non-conductor Stick
Non-conductor Stick
INDOOR UNIT INDICATORS
TEMPORARY SWITCH
OPERATION INDICATOR
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”.
TEMPORARY SWITCH
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.
RAS/RAC-70/80YHA2 EN1 1/22/09, 16:025