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Set the desired FAN SPEED with the 

(FAN SPEED) button (the 

display indicates the setting).

(AUTO)  :  The fan speed changes automatically according 

to the temperature of the air which blows out.

(HI) 

:  Economical  as  the  room  will  become  warm 

quickly.

 

  But you may feel a chill at the beginning.

(MED) 

:  Quiet.

(LOW) 

:  More quiet.

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  keep  reliability  of  the  device,  please  use  this  device  above  -10°C  of  the  outdoor 

temperature.

Press  the  FUNCTION  selector  so  that  the  display  indicates 

 

(HEAT).

 As the settings are stored in memory in the remote controller, you only have 

to press the 

(START/STOP) button next time.

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.

1

3

2

START

STOP

 Defrosting

Defrosting will be performed about once an hour when frost forms on the heat exchange of the outdoor unit, 
for 5~10 minutes each time.

During defrosting operation, the operation lamp blinks in cycle of 3 seconds on and 0.5 second off.

The maximum time for defrosting is 20 minutes.

(If the piping length used is longer than usual, frost will likely to form.)

Summary of Contents for RAC-25YHA

Page 1: ...NDOOR UNIT Instruction manual To obtain the best performance and ensure years of trouble free use please read this instruction manual completely OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT RAS 25YHA RAS 35YHA RAC 25YHA RAC 35YHA SPLIT TYPE AIR CONDITIONER ...

Page 2: ... water drops from the indoor and outdoor units causing wet household effects Make sure that a single phase 230V power source is used The use of other power sources may cause electrical components to overheat and lead to fire PROHIBITION CONNECT EARTH LINE PROHIBITION PROHIBITION WARNING CAUTION Avoid an extended period of direct air flow for your health Should abnormal situation arise like burning s...

Page 3: ...unit with wet hands this could cause fatal accident DON T WET 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 PROHIBITION Please ensure that outdoor mountin...

Page 4: ... the indoor unit to the outdoor during cooling or dehumidifying operation Piping and Wiring Air inlets Rear and left sides Air outlet When heating operation is performed cool air blows and when cooling or dehumidifying operation is performed warm air blows Drain port Bottom Earth terminal Lower section of the side About the outdoor unit When Stop is selected during operation of the indoor unit the...

Page 5: ... automatic operation once power is switched on Turn off the circuit breaker or pull out the power plug if the unit is not be operated for a long period If the power stays on and the unit is not operated power is slightly consumed in the control circuit The power is saved by turning off the power switch or the circuit breaker when the power is supplied from the outdoor unit Attaching the air cleans...

Page 6: ... press this button the intensity of circulation will change from AUTO to HI to MED to LOW This button allows selecting the optimal or preferred fan speed for each opera tion mode SLEEP button Use this button to set the sleep timer TEMPERATURE buttons Use these buttons to raise or lower the temperature setting Keep pressed and the value will change more quickly TIME button Use this button to set an...

Page 7: ...on the current room temperature When AUTO is first selected the device will determine thecurrent room temperature and select the proper operationmode accordingly When the air conditioner has adjusted the room s temperatureto the near preset temperature it will begin to monitoroperation If the room temperature subsequently changes the air conditioner will once again select the appropriateoperation h...

Page 8: ...hat the display indicates HEAT As the settings are stored in memory in the remote controller you only have to press the START STOP button next time 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 ...

Page 9: ... that the display indicates DEHUMIDIFY The FAN SPEED is set at LOW automatically The FAN SPEED button does not work Press the START STOP button 1 Dehumidifying Function START STOP Dehumidifying takes place with a target temperature which is slightly lower than the room temperature setting However target temperature is 16 C for a temperature setting of 16 C If the room temperature becomes lower tha...

Page 10: ...RATURE 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 Cooling operation starts with a beep Press the button again to stop operation The cooling function does not start if the temperature setting is higher than the current room temperature even though the OPERATION lamp lights Th...

Page 11: ...ll automatically change according to the temperature of discharged air As room temperature reaches the preset temperature a very light breeze will blow Operation starts in the HI mode to reach the preset temperature As room temperature approaches the preset temperature fan speed au tomatically switches to LOW Press the START STOP button Fan operation starts with a beep Press the button again to st...

Page 12: ...e TIMER control button Press the RESERVE button 3 Press the ON TIM ER button so that the OFF mark lights and the ON mark blinks The device will turn on off and off on at the designated times The switching occurs first at the preset time that comes earlier The arrow mark appearing on the display indicates the sequence of switching operations How to Cancel Reservation Point the signal window of the r...

Page 13: ... The timer may be used in three ways off timer on timer and ON OFF OFF ON timer Set the current time at first because it serves as a reference As the time settings are stored in memory in the remote controller you only have to press the RESERVE button is order to use the same settings next time 2 Set the TIME button Example The current time is 1 30p m The time indication will dis appear automatical...

Page 14: ...n off time Example If you set 3 hours sleep time at 11 38 p m the turn off time is 2 38 a m Start Sleep timer The device will be turned off by the sleep timer and turned on by on timer 1 Set the ON timer 2 Press the SLEEP button and set the sleep timer For heating In this case the device will turn off in 2 hours at 1 38 a m and turn on earlyso that the preset temperature will be almost reached at ...

Page 15: ...horizon tal air deflector swings up and down If the button is pressed again the deflector 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 rangeshown in the right When the operation is stopped the horizontal air deflector moves and stops at the position where the air outlet closes CAUT...

Page 16: ...elow Open the front panel carefully and remove the filter Vacuum dust from the air filter using vacuum cleaner If there is too much dust wash the filter with a detergent and rinse it thoroughly After that dry it in the shade 3 Set the filter with FRONT mark facing front and slot them into the original state After attaching the filters push the front panel at three arrow portions as shown in figure and c...

Page 17: ...ains 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 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 put it out forward When the f...

Page 18: ... mode will be displayed Pressing the button while the unit is in operation will let the protective circuit work so that the unit will not operate for approximately 3 minutes During heating operation the indoor unit s color indicator lamp may flash with no air emitted for a while If you feel cold wind during warming operation with the HI fan speed or want to make the unit operation quieter after the...

Page 19: ...or low Is the circuit breaker ON Is the power plug inserted Do you have any power cut When it does not operate When it does not cool well When it does not heat well The following phenomena do not indicate unit failure Operation start The unit is preparing to blow warm air Please wait In operation The outdoor unit is defrosting Please wait Hissing or fizzy sounds Refrigerant flow noise in the pipe or...

Page 20: ...tely Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above inspections Inform your agent of the model of your unit production number date of installation Please also inform him regarding the fault Please note On switching on the equipment particularly when the room light is dimmed a slight brightness fluctuation may occur This is of no co...

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