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Hitachi RAC-18C, Instruction Manual, Page: 1 / 24

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ENGLISH

CEILING CASSETTE TYPE AIR CONDITIONER

INDOOR UNIT/OUTDOOR UNIT

MODEL

RAI-18C

RAC-18C

INDOOR UNIT

RAI-18C

Instruction manual

Page 1~24

To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.

OUTDOOR UNIT

RAC-18C

Summary of Contents for RAC-18C

Page 1: ...NDITIONER INDOOR UNIT OUTDOOR UNIT MODEL RAI 18C RAC 18C INDOOR UNIT RAI 18C Instruction manual Page 1 24 To obtain the best performance and ensure years of trouble free use please read this instruction manual completely OUTDOOR UNIT RAC 18C ...

Page 2: ...anger 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 CAUTION PRECAUTIONS DURING SHIFTING OR MAINTENANCE PRECAUTIONS DURING OPERATION Avoid an extended period of direct air flow for your health W A R N I N G Should abnormal situation ...

Page 3: ...perate 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...

Page 4: ...e indoor unit Refer page 20 INDOOR UNIT INDICATORS Light indicator showing the operating condition Refer page 5 SUCTION GRILL AIR INLET HORIZONTAL DEFLECTOR AIR OUTLET Refer page 16 REMOTE CONTROL Send out operation signal to the indoor unit So as to operate the whole unit Refer page 6 OUTDOOR UNIT DRAIN PIPE Condensed water drain to outside CONNECTING CORD AIR INLET BACK LEFT SIDE AIR OUTLET ...

Page 5: ...e power source is turned off and turn on again the operation will be done in automatic mode OPERATION INDICATOR OPERATION LAMP This lamp lights during operation TIMER LAMP This lamp lights when the timer is working 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 butto...

Page 6: ...e timer RESERVE button Time setting reservation CANCEL button Cancel time reservation Precautions for Use Do not put the remote controller in the following places Under 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 ...

Page 7: ... can raise or lower the temperature setting as necessary by maximum of 3 C Press the temperature button and the temperature setting will change by 1 C each time The preset temperature and the actual room temperature may vary somewhat depending on conditions The display does not indicate the preset temperature in the AUTO mode If you change the setting the indoor unit will produce a beep 1 START ST...

Page 8: ... 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 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 for dehumidifying Press the START STOP button Dehumidifying operation starts with a bee...

Page 9: ... MED Fan speed slow LOW Fan speed slower 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 setti...

Page 10: ... fan speed and room temperature to obtain optimum conditions for natural healthful cooling will be performed 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 FAN Press the FAN SPEED button Press the START STOP button Fan o...

Page 11: ...ed FAN SPEED the display indicates your choice Press the temperature control button to set to the desired temperature As the settings are stored in memory in the remote controller you only have to press the START STOP button next time 2 1 3 START STOP Press the START STOP button Circulating operation starts with a beep Press the button again to stop operation ...

Page 12: ...e CANCEL button The RESERVED sign goes out with a beep and the TIMER lamp turns off on the indoor unit 1 Set the current month and day with the TIMER control button 1 Press the OFF TIMER button The OFF mark blinks on the display 1 Press the ON TIMER button the ON mark blinks on the display 2 Set the turn off time with the TIMER control button Press the RESERVE button 3 Press the ON TIMER button so...

Page 13: ...e with the TIMER control button The setting of turn off time is now complete Example The device will turn off at 11 00p m Example The device will turn on at 7 00 a m The setting of the turn on time is now complete 4Set 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 ins...

Page 14: ...ller 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 Reservation Point the signal window of the remo...

Page 15: ...re and the FAN SPEED will be set to LOW setting 1 hour after the setting of the sleep timer Fan Operation with the sleep timer 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 You can not set other timer during sleep timer operati...

Page 16: ... 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 AUTO SWING button is pressed while the operation is stopped the horizontal air deflector moves and stops at the position where the air outlet closes When the auto swing operation is performed if th...

Page 17: ...t the old batteries 2 Install the new batteries The direction of the batteries should match the marks in the case 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 CAUTION Push and pull to the direction of arrow ...

Page 18: ...with your wake up time in the morning This will enable you to enjoy a comfortable room temperature Please use the timer effectively 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 pay attention to the room temperature and air flow direction when operating the unit for baby children and old f...

Page 19: ...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 OFF Interference From Electrical Products Caution To avoid noise int...

Page 20: ...te Press the mark PUSH at the left and right sides of the suction grille to fix it securely 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 operate the air conditioner with the filter removed Dust may enter the air conditioner and cause ...

Page 21: ...L Wipe it with a soft dry cloth When it is excessively dirty wipe with soft cloth soaked in lukewarm water or neutral detergent Then wipe thoroughly with a soft dry cloth 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 a...

Page 22: ...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 please clean the air filter and the evaporator regularly to reduce the odor Pl...

Page 23: ...ons of the local Power Supply Companies are to be observed Minimum Maximum Indoor Dry bulb C 21 32 Wet bulb C 15 23 Outdoor Dry bulb C 21 43 Wet bulb C 15 26 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 ...

Page 24: ... 24 MEMO ...

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