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Hitachi RAC-50YHA3, Instruction Manual, Page: 22 / 24

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Hitachi RAC-50YHA3 Instruction Manual Download Page 22

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REGULAR INSPECTION

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

Is the earth line disconnected or broken?

Is the mounting frame seriously affected by rust and is the 
outdoor unit tilted or unstable?

Is the plug of power line  rmly plugged into the socket?
(Please ensure no loose contact between them).

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

!

CAUTION

3.   MAINTENANCE BEFORE LONG OFF PERIOD

●

 

Running the unit setting the operation mode to

  (FAN) and the fan speed to HI for about half a day 

on a  ne day, and dry the whole of the unit.

●

 

Switch off the power plug.

RAS-50-60YHA3 (EN2)   22

12/21/11   9:33 AM

Summary of Contents for RAC-50YHA3

Page 1: ...IT OUTDOOR UNIT MODEL RAS 50YHA3 RAC 50YHA3 RAS 60YHA3 RAC 60YHA3 INDOOR UNIT RAC 50YHA3 Instruction manual Page 1 24 To obtain the best performance please read this instruction manual completely OUTDOOR UNIT RAC 60YHA3 RAS 50YHA3 RAS 60YHA3 ...

Page 2: ...ther 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 Spray cans and other combustibles should not be located within a meter of the air outlets of...

Page 3: ...r will condense on the air de 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...

Page 4: ...r purifying lters please follow the above procedures The cooling capacity is slightly weakened and the cooling speed becomes slower when the air purifying lters are used So set the fan speed to HIGH when using it in this condition Air purifying lters are washable and reusable up to 20 times by using vacumm cleaner or water rinse under running tap water Type number for this air purifying lter is SP...

Page 5: ...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 TIMER LAMP This lamp lights when the timer is working TEMPORARY SWITCH Use this switch to start and stop when the remote controller does not work Us...

Page 6: ...alue will change more quickly TIME button Use this button to set and check the time and date RESET buttons FUNCTION selector Use this button to select the operating mode Every time you press it the mode will change from AUTO to HEAT to DEHUMIDIFY to COOL and to FAN cyclically FAN SPEED selector This determines the fan speed Every time you press this button the intensity of circulation will change ...

Page 7: ...n the remote controller you only have to press the START STOP button next time 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 HEAT COOL or DEHUMIDIFY depending on the current room temperature However the mode of operation will not change when indoor unit connected to mult...

Page 8: ...w Set the desired room temperature with the TEMPERATURE buttons the display indicates the setting The temperature setting and the actual room temperature may vary somewhat depending on conditions Press the START STOP button Heating operation starts with a beep Press the button again to stop operation As the settings are stored in memory in the remote controller you only have to press the START STO...

Page 9: ...top the indoor unit will stop emitting air as soon as the room temperature becomes lower than the setting temperature The preset room temperature may not be reached depending on the number of people present in the room or other room conditions Set the desired room temperature with the TEMPERATURE button the display indicates the setting The range of 20 26 C is recommended as the room temperature f...

Page 10: ...an speed slower SILENT Fan speed ultra slow Set the desired room temperature with the TEMPERATURE button the display indicates the setting The temperature setting and the actual room temperature may vary some how depending on conditions Press the START STOP button Cooling operation starts with a beep Press the button again to stop operation The cooling function does not start if the temperature se...

Page 11: ...setting temperature is large fan starts to run at HI speed After room temperature reaches the preset temperature the cooling operation fan speed changes to LOW automatically For the cooling operation FAN OPERATION 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 Press the FUNCTION selector so that the display indicates...

Page 12: ...The setting of the current time is now complete Example The current time is 1 30 p m 3 Point the signal window of the remote controller toward the indoor unit and press the RESERVE button The OFF mark starts lighting instead of ashing and the sign RESERVED lights A beep occurs and the TIMER lamp lights on the indoor unit 2 Set the turn off time with the TIMER control button The setting of turn off...

Page 13: ...MER button so that the OFF mark lights and the ON mark blinks 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 RESERVE button The ON mark starts lighting instead of ashing 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 an...

Page 14: ...ion 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 2 Press the SLEEP button and set the sleep timer The device will be turned off by the sleep timer and turned on by on timer How to Cancel Reser...

Page 15: ...ve Use the horizontal air de ector within the adjusting range shown on the right When the operation is stopped the horizontal air de ector moves and stops at the position where the air outlet closes CAUTION In Cooling operation do not keep the horizontal air de ector swinging for a long time Some dew may form on the horizontal air de ector and dew may drop Adjustment of the conditioned air in the ...

Page 16: ... of batteries together 2 Take out the batteries when you do not use the remote controller for 2 or 3 months CAUTION CIRCUIT BREAKER When you do not use the room air conditioner set the circuit breaker to OFF TEMPORARY SWITCH If the remote controller does not work due to battery failure press this switch to start and stop operation This temporary operation will be at the setting made most recently ...

Page 17: ...her with your wake up time in the morning This will enable you to enjoy a comfortable room temperature Please use the timer effectively Dusty pre lter will reduce the air volume and the cooling ef ciency To prevent from wasting electric energy please clean the lter every 2 weeks Please pay attention to the room temperature and air ow direction when operating the unit for baby children and old folk...

Page 18: ...e achieved 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 Warning To protect the whole unit during lightning please stop operating the unit and remove the plug from the socket Interference From Electrical ...

Page 19: ...p lights Before cleaning stop operation and switch off the power supply CAUTION CAUTION NOTE Attaching the air purifying lters Attach the air purifying lters to the frame by gently compress its both sides and release after insertion into pre lter frame Do not bend the air purifying lter as it may cause damage to the structure In case of removing the air purifying lters please follow the above proc...

Page 20: ... pre lters push the front panel at three arrow portions as shown in gure and close it CAUTION Do not wash with hot water at more than 40 C The lter may shrink When washing it shake off moisture completely and dry it in the shade do not expose it directly to the sun The lter may shrink Do not use detergent on the air purifying lter as some detergent may deteriorate the air purifying lter electrosta...

Page 21: ...e to hold the front panel with both hands to detach and attach it 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 Removing the Front Panel When the front panel is fully opened with both hands push the rig...

Page 22: ...or unit tilted or unstable Is the plug of power line rmly plugged into the socket Please ensure no loose contact between them Cleaning and maintenance must be carried out only by quali ed service personnel Before cleaning stop operation and switch off the power supply CAUTION 3 MAINTENANCE BEFORE LONG OFF PERIOD Running the unit setting the operation mode to FAN and the fan speed to HI for about h...

Page 23: ...ing 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 lter and the evaporator regularly must be cleaned to reduce the odor Please contact your sales agent immediately if the air conditioner still fails ...

Page 24: ...y Companies are to be observed Minimum Maximum Minimum Maximum Indoor Dry bulb C 21 32 20 27 Wet bulb C 15 23 12 19 Outdoor Dry bulb C 21 46 2 21 Wet bulb C 15 26 1 15 Note Avoid to use the room air conditioner for cooling operation when the outside temperature is below 10 C 14 F The recommended maximum and minimum operating temperatures of the hot and cold sides should be as below Cooling Heating...

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