Hitachi RAK-18RPB Manual
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Hitachi RAK-18RPB Manual

Split type air conditioner
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SPLIT TYPE AIR CONDITIONER
INDOOR UNIT
RAK-15QPB
RAK-18RPB
RAK-25RPB
RAR-6N2
Instruction manual
To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.
This room air conditioner is only for consumer usage.
Do not use for preservation of foods, animals, plants, precision machines, art, medicine or such.
MODEL
RAK-15QPB
RAK-18RPB
RAK-25RPB
RAK-35RPB
RAK-50RPB
RAK-35RPB
RAK-50RPB
RAR-6N1
– 1 –
Page 1~10

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  • Page 1 SPLIT TYPE AIR CONDITIONER INDOOR UNIT MODEL RAK-15QPB RAK-18RPB RAK-25RPB RAK-35RPB RAK-50RPB RAK-15QPB RAK-35RPB RAK-18RPB RAK-50RPB RAK-25RPB RAR-6N2 RAR-6N1 Instruction manual Page 1~10 To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.

  • Page 2: Safety Precaution

    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.
  • Page 3 PRECAUTIONS DURING OPERATION l l a c i f for any other intended use. PROHIBITION Do not attempt to operate the unit with wet hands, this could cause fatal accident. DON’T WET When operating the unit with burning equipments, regularly ventilate c i f STRICTLY OBSERVE PRECAUTIONS...

  • Page 4: Names And Functions Of Each Part

    Send out operation signal to the indoor unit. So as to operate the whole unit. MODEL NAME AND DIMENSIONS RAK-15QPB , RAK-18RPB , RAK-25RPB NOTE FOR MULTI SYSTEM Several indoor units can be connected to one outdoor unit. You can operate only one unit or several units according to your needs.
  • Page 5 NAMES AND FUNCTIONS OF EACH PART INDOOR UNIT INDICATIONS OPERATION LAMP (Yellow) This lamp lights during operation. The OPERATION LAMP flashes in the following cases during heating. (1) During preheating TIMER LAMP (Orange) For about 2-3 minutes after This lamp lights when the starting up.
  • Page 6 Remote Controller Manual MODEL RAR-6N1 Remote Controller manual Page 1~28 To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely. – 1 –...

  • Page 7: Preparation Before Operation

    PREPARATION BEFORE OPERATION To install the batteries 1. Slide the cover to take it off. 2. Install two dry batteries AAA.LR03 (alkaline). The direction of the batteries should match the marks in the case. 3. Replace the cover at its original position. To x the remote controller holder to the wall 1.
  • Page 8 PREPARATION BEFORE OPERATION To set calendar and clock 1. Press (RESET) button when fi rst time setting. "Year" blinks. 2. Press (TIME) button to set the current year. 3. Press (CLOCK) button. "Day" and "Month" blink. 4. Press (TIME) button to set the current day and month.

  • Page 9: Remote Controller

    NAMES AND FUNCTIONS OF REMOTE CONTROLLER REMOTE CONTROLLER This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is controlled electronically, 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.
  • Page 10 NAMES AND FUNCTIONS OF REMOTE CONTROLLER MODE selector Button POWERFUL Button Use this button to select the Use this button to set the operating mode. Every time you POWERFUL mode. ( p. 11) press this button, the mode will change from (AUTO) (HEAT) (DEHUMIDIFY)

  • Page 11: Various Functions

    VARIOUS FUNCTIONS Auto Restart Control If there is a power failure, operation will be automatically restarted when the power is resumed with previous operation mode and airfl ow direction. (As the operation is not stopped by remote controller.) If you intend not to continue the operation when the power is resumed, switch off the power supply. When you switch on the circuit breaker, the operation will be automatically restarted with previous operation mode and airfl...

  • Page 12: Heating Operation

    HEATING OPERATION Use the device for heating when the outdoor temperature is under 21°C. When it is too warm (over 21°C), the heating function may not work in order to protect the device. In order to maintain reliability of the device, please use this device when outdoor temperature is above –15°C.

  • Page 13: Dehumidifying Operation

    DEHUMIDIFYING OPERATION Use the device for dehumidifying when the room temperature is over 16°C. When it is under 15°C, the dehumidifying function will not work. Press the MODE selector button so that the display indicates (DEHUMIDIFY). The fan speed is set at LOW. Press (FAN SPEED) button to select SILENT or LOW fan speed.

  • Page 14: Cooling Operation

    COOLING OPERATION Use the device for cooling when the outdoor temperature is -10~ 43°C. If indoors humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit. Press the MODE selector button so that the display indicates (COOL).

  • Page 15: Fan Operation

    FAN OPERATION User can use the device simply as an air circulator. Press the MODE selector so that the display indicates (FAN). Set the desired FAN SPEED with the (FAN SPEED) button (the display indicates the setting). (HIGH) (MED) (LOW) (SILENT) START Press the...

  • Page 16: Powerful Operation

    POWERFUL OPERATION By pressing (POWERFUL) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation, the air conditioner performs at the maximum power. During POWERFUL operation, cooler or warmer air will be blown out from indoor unit for COOLING or HEATING operation respectively. To start POWERFUL operation Press (POWERFUL) button during operation.

  • Page 17: Silent Operation

    SILENT OPERATION By pressing (SILENT) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation, the fan speed will change to ultra slow. To start SILENT operation Press (SILENT) button during operation. “ ” is displayed on the LCD. Fan speed will be ultra slow. To cancel SILENT operation Press (START/STOP) button.

  • Page 18: Eco Operation

    ECO OPERATION There are two kinds of ECO OPERATION with sensor or without sensor, depending on models. Please refer to [Names and Functions of each part] in the unit instruction manual to verify if your unit is equipped with a sensor and read the following instruction on ECO Operation accordingly. ECO OPERATION ECO operation is an energy saving function by changing set temperature automatically and by limiting the maximum power consumption value.
  • Page 19 ECO OPERATION ECO OPERATION with sensor The sensor detects the presence of people in the room. When nobody is detected, the unit automatically starts enegy saving operation by shifting the set temperature in two steps. By pressing the (ECO) button during AUTO, HEATING, DEHUMIDIFYING or COOLING operation, the air conditioner performs the "ECO"...
  • Page 20 LEAVE HOME (LH) OPERATION Prevent the room temperature from falling too much when no one is at home. The initial setting temperature is 10°C and the temperature range can be set between 10°C and 16°C. This operation is able to operate by "Continuous operation" or "Day timer operation". Please use "Day timer operation" to set the number of days up to 99 days.
  • Page 21 CLEAN (ONE TOUCH CLEAN) OPERATION Drying indoor heat exchanger after cooling operation to prevent mildew. To start CLEAN operation Press (CLEAN) button when unit is OFF. Total time taken for One Touch Clean operation is 60 minutes. During this operation, HEATING or FAN operation shall operate.
  • Page 22 ONCE TIMER (ON/OFF TIMER) OPERATION OFF TIMER The device can be set to turn off at a preset time. 1. Press (OFF-TIMER) button. blink on the display. 2. Set the "turn-off time" with (TIME) button. 3. After setting, direct the remote controller towards the indoor and press (SEND) button.

  • Page 23: Sleep Timer Off

    ECO SLEEP TIMER OPERATION The timer can be set up to a duration of 7 hours. By pressing (SLEEP) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation, the unit shifts the room temperature and reduces the fan speed. It results in energy saving. Set the current time fi...
  • Page 24 ECO SLEEP TIMER OPERATION To set ECO SLEEP TIMER and ON TIMER The air conditioner will be turned off by ECO SLEEP TIMER and turned on by ON TIMER. 1. Set the ON TIMER. 2. Press (SLEEP) button and set ECO SLEEP TIMER. Example: In this case, air conditioner will turn off in 2 hours (at 1:38) and it will be turned on at 6:00 the next morning.

  • Page 25: Weekly Timer Operation

    WEEKLY TIMER OPERATION It is possible to select Mode A or Mode B. For each mode, up to 6 programs can be set per day. In total, a maximum of 42 programs can be set for a week for each mode. If calendar and clock are not set, the reservation setting for WEEKLY TIMER cannot be set.
  • Page 26 WEEKLY TIMER OPERATION 5. Press (ON-OFF TIMER) button to select ON TIMER or OFF TIMER reservation. 6. Press (TIME) button to set time reservation. 7. Press (TEMP ) button to set temperature reservation. 8. Press (OK) button. The reservations are set. Day, program number, ON reservation, setting temperature will light up.
  • Page 27 WEEKLY TIMER OPERATION Step 2: Select Mode A or Mode B and activate or deactivate WEEKLY TIMER. How to select Mode A or Mode B of WEEKLY TIMER setting. 1. Press (WEEKLY) button. blink on the display. (Normally Mode A will blink fi rst). 2.
  • Page 28 WEEKLY TIMER OPERATION Step 3: Copy and cancel the reservation schedule. How to copy and paste. Editing the reservation schedule is easy by copying data from one day to another day. 1. Press (WEEKLY) button to select Mode A or Mode B. 2.
  • Page 29 WEEKLY TIMER OPERATION Step 3: Copy and cancel the reservation schedule. How to delete WEEKLY TIMER data. [Delete one program number reservation] 1. Press (WEEKLY) button to select Mode A or Mode B. 2. Press (WEEKLY) button for 3 seconds to start editing the reserva- tion schedule.
  • Page 30 WEEKLY TIMER OPERATION Step 3: Copy and cancel the reservation schedule. [Delete one day reservation] 1. Press (WEEKLY) button to select Mode A or Mode B. 2. Press (WEEKLY) button for 3 seconds to start editing the reservation schedule. 3. Press (DAY) button to select a day of the week to edit.

  • Page 31: Info Function

    INFO FUNCTION By pressing (INFO) button, temperature around remote controller and monthly power consumption will be displayed on the remote controller. After changing the batteries, direct the remote controller towards the indoor unit and press (INFO) button. Current calendar and clock will be transmitted from indoor unit. In order to receive information from indoor unit, the distance between remote controller and receiver of indoor units is within 2 meters.
  • Page 32 OPERATION MODE LOCK The remote controller can be set to fi x the HEATING mode (including FAN), COOLING mode (including FAN) and DEHUMIDIFYING mode (including FAN) operations. Method to lock HEATING mode (including FAN) operation. Press (ECO) and (POWERFUL) buttons simultaneously for about 5 seconds when the remote controller is OFF.
  • Page 33 – 28 –...
  • Page 34 Remote Controller Manual MODEL RAR-6N2 Remote Controller manual Page 1~28 To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely. – 1 –...
  • Page 35 PREPARATION BEFORE OPERATION To install the batteries 1. Slide the cover to take it off. 2. Install two dry batteries AAA.LR03 (alkaline). The direction of the batteries should match the marks in the case. 3. Replace the cover at its original position. To x the remote controller holder to the wall 1.
  • Page 36 PREPARATION BEFORE OPERATION To set calendar and clock 1. Press (RESET) button when fi rst time setting. "Year" blinks. 2. Press (TIME) button to set the current year. 3. Press (CLOCK) button. "Day" and "Month" blink. 4. Press (TIME) button to set the current day and month.
  • Page 37 NAMES AND FUNCTIONS OF REMOTE CONTROLLER REMOTE CONTROLLER This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is controlled electronically, 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.
  • Page 38 NAMES AND FUNCTIONS OF REMOTE CONTROLLER MODE selector Button POWERFUL Button Use this button to select the Use this button to set the operating mode. Every time you POWERFUL mode. ( p. 11) press this button, the mode will change from (AUTO) (HEAT) (DEHUMIDIFY)
  • Page 39 VARIOUS FUNCTIONS Auto Restart Control If there is a power failure, operation will be automatically restarted when the power is resumed with previous operation mode and airfl ow direction. (As the operation is not stopped by remote controller.) If you intend not to continue the operation when the power is resumed, switch off the power supply. When you switch on the circuit breaker, the operation will be automatically restarted with previous operation mode and airfl...
  • Page 40 HEATING OPERATION Use the device for heating when the outdoor temperature is under 21°C. When it is too warm (over 21°C), the heating function may not work in order to protect the device. In order to maintain reliability of the device, please use this device when outdoor temperature is above –15°C.
  • Page 41 DEHUMIDIFYING OPERATION Use the device for dehumidifying when the room temperature is over 16°C. When it is under 15°C, the dehumidifying function will not work. Press the MODE selector button so that the display indicates (DEHUMIDIFY). The fan speed is set at LOW. Press (FAN SPEED) button to select SILENT or LOW fan speed.
  • Page 42 COOLING OPERATION Use the device for cooling when the outdoor temperature is -10~ 43°C. If indoors humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit. Press the MODE selector button so that the display indicates (COOL).
  • Page 43 FAN OPERATION User can use the device simply as an air circulator. Press the MODE selector so that the display indicates (FAN). Set the desired FAN SPEED with the (FAN SPEED) button (the display indicates the setting). (HIGH) (MED) (LOW) (SILENT) START Press the...
  • Page 44 POWERFUL OPERATION By pressing (POWERFUL) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation, the air conditioner performs at the maximum power. During POWERFUL operation, cooler or warmer air will be blown out from indoor unit for COOLING or HEATING operation respectively. To start POWERFUL operation Press (POWERFUL) button during operation.
  • Page 45 SILENT OPERATION By pressing (SILENT) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation, the fan speed will change to ultra slow. To start SILENT operation Press (SILENT) button during operation. “ ” is displayed on the LCD. Fan speed will be ultra slow. To cancel SILENT operation Press (START/STOP) button.
  • Page 46 ECO OPERATION There are two kinds of ECO OPERATION with sensor or without sensor, depending on models. Please refer to [Names and Functions of each part] in the unit instruction manual to verify if your unit is equipped with a sensor and read the following instruction on ECO Operation accordingly. ECO OPERATION ECO operation is an energy saving function by changing set temperature automatically and by limiting the maximum power consumption value.
  • Page 47 ECO OPERATION ECO OPERATION with sensor The sensor detects the presence of people in the room. When nobody is detected, the unit automatically starts enegy saving operation by shifting the set temperature in two steps. By pressing the (ECO) button during AUTO, HEATING, DEHUMIDIFYING or COOLING operation, the air conditioner performs the "ECO"...
  • Page 48 LEAVE HOME (LH) OPERATION Prevent the room temperature from falling too much when no one is at home. The initial setting temperature is 10°C and the temperature range can be set between 10°C and 16°C. This operation is able to operate by "Continuous operation" or "Day timer operation". Please use "Day timer operation" to set the number of days up to 99 days.
  • Page 49 CLEAN (ONE TOUCH CLEAN) OPERATION Drying indoor heat exchanger after cooling operation to prevent mildew. To start CLEAN operation Press (CLEAN) button when unit is OFF. Total time taken for One Touch Clean operation is 60 minutes. During this operation, HEATING or FAN operation shall operate.
  • Page 50 ONCE TIMER (ON/OFF TIMER) OPERATION OFF TIMER The device can be set to turn off at a preset time. 1. Press (OFF-TIMER) button. blink on the display. 2. Set the "turn-off time" with (TIME) button. 3. After setting, direct the remote controller towards the indoor and press (SEND) button.
  • Page 51 ECO SLEEP TIMER OPERATION The timer can be set up to a duration of 7 hours. By pressing (SLEEP) button during AUTO, HEATING, DEHUMIDIFYING, COOLING or FAN operation, the unit shifts the room temperature and reduces the fan speed. It results in energy saving. Set the current time fi...
  • Page 52 ECO SLEEP TIMER OPERATION To set ECO SLEEP TIMER and ON TIMER The air conditioner will be turned off by ECO SLEEP TIMER and turned on by ON TIMER. 1. Set the ON TIMER. 2. Press (SLEEP) button and set ECO SLEEP TIMER. Example: In this case, air conditioner will turn off in 2 hours (at 1:38) and it will be turned on at 6:00 the next morning.
  • Page 53 WEEKLY TIMER OPERATION It is possible to select Mode A or Mode B. For each mode, up to 6 programs can be set per day. In total, a maximum of 42 programs can be set for a week for each mode. If calendar and clock are not set, the reservation setting for WEEKLY TIMER cannot be set.
  • Page 54 WEEKLY TIMER OPERATION 5. Press (ON-OFF TIMER) button to select ON TIMER or OFF TIMER reservation. 6. Press (TIME) button to set time reservation. 7. Press (TEMP ) button to set temperature reservation. 8. Press (OK) button. The reservations are set. Day, program number, ON reservation, setting temperature will light up.
  • Page 55 WEEKLY TIMER OPERATION Step 2: Select Mode A or Mode B and activate or deactivate WEEKLY TIMER. How to select Mode A or Mode B of WEEKLY TIMER setting. 1. Press (WEEKLY) button. blink on the display. (Normally Mode A will blink fi rst). 2.
  • Page 56 WEEKLY TIMER OPERATION Step 3: Copy and cancel the reservation schedule. How to copy and paste. Editing the reservation schedule is easy by copying data from one day to another day. 1. Press (WEEKLY) button to select Mode A or Mode B. 2.
  • Page 57 WEEKLY TIMER OPERATION Step 3: Copy and cancel the reservation schedule. How to delete WEEKLY TIMER data. [Delete one program number reservation] 1. Press (WEEKLY) button to select Mode A or Mode B. 2. Press (WEEKLY) button for 3 seconds to start editing the reserva- tion schedule.
  • Page 58 WEEKLY TIMER OPERATION Step 3: Copy and cancel the reservation schedule. [Delete one day reservation] 1. Press (WEEKLY) button to select Mode A or Mode B. 2. Press (WEEKLY) button for 3 seconds to start editing the reservation schedule. 3. Press (DAY) button to select a day of the week to edit.
  • Page 59 INFO FUNCTION By pressing (INFO) button, temperature around remote controller and monthly power consumption will be displayed on the remote controller. After changing the batteries, direct the remote controller towards the indoor unit and press (INFO) button. Current calendar and clock will be transmitted from indoor unit. In order to receive information from indoor unit, the distance between remote controller and receiver of indoor units is within 2 meters.
  • Page 60 OPERATION MODE LOCK The remote controller can be set to fi x the HEATING mode (including FAN), COOLING mode (including FAN) and DEHUMIDIFYING mode (including FAN) operations. Method to lock HEATING mode (including FAN) operation. Press (ECO) and (POWERFUL) buttons simultaneously for about 5 seconds when the remote controller is OFF.
  • Page 61 – 28 –...

  • Page 62: Maintenance

    MAINTENANCE CAUTION Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning, stop operation and switch off the power supply. 1. AIR FILTER Please clean the filter once about every two weeks. By doing so, the power rates are saved. In case the air filter is full of dust, the air flow will decrease and the cooling capacity will be reduced.

  • Page 63: Cleaning Of Front Panel

    RAK-15Q PB Shaft Shaft Hole Hole RAK-18RPB RAK- 5RPB When the front panel is fully opened with both hands, Move the shafts of the left and right arms into the steps in the unit and securely insert them into the push the right arm to the inside to release it, and while holes.
  • Page 64 INFORMATION CAPABILITIES Heating Capability CAUTION This room air conditioner utilizes a heat pump system that absorbs exterior heat and brings it into a room to be heated. As the ambient Do not use a stove temperature gets lower, heating capability will also lower. In such a other situation, the inverter work to increase compressor rpm to keep the h i g h t e m p e ra t u r e...

  • Page 65: Regular Inspection

    REGULAR INSPECTION PLEASE CHECK THE FOLLOWING POINTS EVERY EITHER HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT SHOULD YOU NEED ANY HELP. ¦ § ¨ © ¨ ¨ § ¨ ¨ § ¨ § " ¨ ¨ © ¨ © ¨...
  • Page 66 Noise of the ventilation fan sucking in air present in the drain hose and blowing out dehumidifying water that had accumulated in the condensed water collector. For Perking noise details, consult your sales agent. Operation noise changes due to power variations according to room temperature Changing operation noise changes.

This manual is also suitable for:

Rak-15qpbRak-25rpbRak-35rpbRak-50rpb

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