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Hitachi RAD-25NH4, Installation Manual, Page: 5 / 20

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Hitachi RAD-25NH4 Installation Manual Download Page 5

– 5 –

ENGLISH

DEUTSCH

FRANÇAIS

IT

ALIANO

SP

ANISH

POR

TUGUÊS

∂ÏÏËÓÈο

Р

УССКИЙ

MODEL NAME AND DIMENSIONS

MODEL

WIDTH

HEIGHT

DEPTH

RAD-25NH5
RAD-35NH5

750mm (29-17/32")

235mm (9-1/4")

400mm (15-3/4")

(INDOOR UNIT)

●

TEMPORARY SWITCH
Use this switch to start and stop when the remote controller
does not work. Normally do not use this button.

●

TIMER lamp
This lamp lights when the timer is working.

●

OPERATION lamp
This lamp lights during operation.
During heating, the operation indicator may blink, blowing very
lightly or totally stopping under the following conditions:
(1)

During preheating (heating operation)

  For about 2~3 minutes after start up.

(2)

During defrosting (heating operation)

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

INDOOR UNIT INDICATORS

Summary of Contents for RAD-25NH4

Page 1: ...tir uma utilização sem falhas durante muitos anos é favor ler este manual de instruções completamente Mode d emploi Page 41 60 Des performances optimales et un fonctionnement à long terme seront assurés en appliquant les présentes instructions après avoir entièrement lu ce mode d emploi O ËÁ Â Ú Ûˆ ÛÂÏ 121 140 È Ó Â Ó È ÂÁÁ ËÌ ÓË Ë Î Ï ÙÂÚË Ó Ù ÏÂÈÙÔ ÚÁ Î È Ë ˆÚ Ï Â Ì ÎÚÔ ÚfiıÂÛÌË Ú ÛË ÙË Û ÛÎÂ È ...

Page 2: ...short circuit or fire may occur if you install the unit by yourself 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 A circuit breaker should be installed...

Page 3: ...efore do not operate under such condition for a long time Do not touch the air outlet bottom surface and aluminum fin of the outdoor unit You may get hurt Indoor unit cleaning must be performed by authorized personnel only Consult your sales agent Using a commercially available detergent or similar can damage the plastic parts or clog the drain pipe causing water to drip with potential electric sh...

Page 4: ...ights To restart an indoor unit which was operated later stop the indoor unit which was operated first or later and reset the type of operation then perform operation again Adjusting the number of indoor units Decrease the number of indoor units to be operated especially when it is very hot or very cold or when you want to reach the preset temperature quickly Stopped indoor units When an indoor un...

Page 5: ...hts when the timer is working OPERATION lamp This lamp lights during operation During heating the operation indicator may blink blowing very lightly or totally stopping under the following conditions 1 During preheating heating operation For about 2 3 minutes after start up 2 During defrosting heating operation Defrosting will be performed about once an hour when frost forms on the heat exchanger ...

Page 6: ...n Point this window toward the indoor unit when controlling it The transmission sign blinks when a signal is sent Display This indicates the room temperature selected current time timer status function and intensity of circulation selected START STOP button Press this button to start operation Press it again to stop operation SLEEP button Use this button to set the sleep timer TEMPERATURE buttons ...

Page 7: ...y restarted with previous operation mode and airflow direction Note 1 If you do not require Auto Restart Control please consult your sales agent 2 Auto Restart Control is not available when Timer or Sleep Timer mode is set Press the FAN SPEED button AUTO and LOW is available Press the START STOP button Operation starts with a beep Press the button again to stop operation As the settings are stored...

Page 8: ... room will become warm quickly But you may feel a chill at the beginning MED Quiet LOW More quiet 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 1 3 Press the START STOP button Heating operation starts with a beep Press the button again to stop operatio...

Page 9: ...o 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 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 than the target value ope...

Page 10: ...ons 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 The cooling f...

Page 11: ...ill 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 automatically switches to LOW Press the START STOP button Fan operation starts with a beep Press the button again to st...

Page 12: ...he OFF mark blinks 2 Set the turn off time with the TIMER control button Press the RESERVE button 3 Press the ON TIMER 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 Stop Sta...

Page 13: ...rned on at 7 00 a m The settings of the turn on off time are now complete 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 flashing and the RESERVED sign lights A beep occurs and the TIMER lamp lights on the indoor unit PM PM AM PM PM PM 2 Set the TIME button Example The current time is 1 30p m The time in...

Page 14: ...door 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 H AM SLEEP 1 hour 2 hours 3 hours 7 hours Sleep timer off 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 t...

Page 15: ...lector swings up and down If the button is pressed again the deflector stops in its current position Use the horizontal air deflector within the adjusting range shown on the right When the auto swing operation is performed if the horizontal air deflector is moved manually the swing range may drift However it will return to the original operation range after a short time About 65 2 FULL DUCT SEMI D...

Page 16: ...en you do not use the room air conditioner set the circuit breaker to OFF HOW TO USE THE AIR CONDITIONER EFFECTIVELY 1 An average room temperature setting is probably the best for you as well as being economical Excessive cooling or heating is not recommended for health reasons High electricity bills may also result Close the curtains or blinds to prevent heat from flowing into or escaping the roo...

Page 17: ...oo much dust use neutral detergent After using neutral detergent wash with clean water and dry in the shade 2 Install the filters Slightly lift the suction grille and close as original state 3 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 ...

Page 18: ...t PROHIBITION When fan speed room temperature are set with the remote controller before starting manual operation and the buttons are released the indication of settings will go off in 10 seconds and only the operation 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 If you f...

Page 19: ...e remote controller is not transmitting a signal Remote controller display is dim or blank REGULAR INSPECTION PLEASE CHECK THE FOLLOWING POINTS EVERY EITHER HALFYEARLY ORYEARLY CONTACTYOUR SALES AGENT SHOULD YOU NEED ANY HELP The following phenomena do not indicate unit failure Hissing or fizzy sounds Refrigerant flow noise in the pipe or valve sound generated when flow rate is adjusted Squeaking ...

Page 20: ...ay blinks As the nature of the failure can be identified by the blinking cycle check the blinking cycle before turning off the circuit breaker Notes In quiet operation or stopping the running the following phenomena may occasionally occur but they are not abnormal for the operation 1 Slight flowing noise of refrigerant in the refrigerating cycle 2 Slight rubbing noise from the fan casing which is ...

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