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SPLIT TYPE AIR CONDITIONER
INDOOR UNIT/OUTDOOR UNIT
RAS-S25YHAB/RAC-S25YHAB
R32
RAS-S35YHAB/RAC-S35YHAB
OUTDOOR UNIT
RAC-S25YHAB
RAC-S35YHAB
Instruction manual
To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.
MODEL
INDOOR UNIT
RAS-S25YHAB
RAS-S35YHAB
- 1 -
Page 1~38
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Table of Contents
Related Manuals for Hitachi RAS-S25YHAB
Summary of Contents for Hitachi RAS-S25YHAB
- Page 1 SPLIT TYPE AIR CONDITIONER INDOOR UNIT/OUTDOOR UNIT MODEL RAS-S25YHAB/RAC-S25YHAB RAS-S35YHAB/RAC-S35YHAB INDOOR UNIT OUTDOOR UNIT RAS-S25YHAB RAS-S35YHAB RAC-S25YHAB RAC-S35YHAB Instruction manual Page 1~38 To obtain the best performance and ensure years of trouble free use, please read this instruction manual completely.
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Page 2: Safety Precaution
SAFETY PRECAUTION This appliance is filled with R32. • 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. - Page 3 PRECAUTIONS DURING OPERATION • Do not use any conductor as fuse wire, this could cause fatal accident. PROHIBITION • During thunder storm, disconnect the plug top or turn off the circuit breaker. WARNING “OFF” • Spray cans and other combustibles should not be located within a meter of the air outlets of both indoor and outdoor units.
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Page 4: Names And Functions Of Each Part
(Bottom) • When the outdoor unit is hung on the ceiling, install the bush and drain pipe on the drain port and drain water. MODEL NAME AND DIMENSIONS MODEL WIDTH (mm) HEIGHT (mm) DEPTH (mm) RAS-S25YHAB\RAS-S35YHAB RAC-S25YHAB\RAC-S35YHAB - 4 -... - 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 Frost Wash Lamp(Green) heating. TIMER LAMP (Orange) (1)During preheating For about 2-3 minutes after This lamp lights when the starting up.
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Page 6: 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. ■... - Page 7 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.
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Page 8: 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 9 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. 1 ) press this button, the mode will (AUTO) ➞...
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Page 10: 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. -
Page 11: Heating Operation
HEATING OPERATION ● Use the device for heating when the outdoor temperature is under 24°C. When it is too warm (over 24°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 –... -
Page 12: 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 13: Cooling Operation
COOLING OPERATION Use the device for cooling when the outdoor temperature is -10°C to 4 °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 14: 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 15: 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. -
Page 16: 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. ■... -
Page 17: 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. ■... - Page 18 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, ●...
- Page 19 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 20 FROST WASH OPERATION (For single model connection) The dust and dirt adhering to indoor heat exchanger which is the cause of the smell. They are washed away by freezing and thawing of the heat exchanger. Frost Wash function can work when the outdoor temperature is 1℃ to 43℃ and Indoor humidity is 30% to 70%. There are two kinds of Frost Wash operation, auto mode and manual mode.
- Page 21 FROST WASH OPERATION (For single model connection) To cancel Frost Wash (Auto mode) At the time of the effective setting, while pressing and holding (TIME) button, press (Frost Wash/Clean) button on the same, Frost Wash (Auto mode) is canceled. " "disappears from the LCD.
- 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.
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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.
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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.
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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. ●... - 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.
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Page 33: 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 34 2. CLEANING OF FRONT PANEL • Remove the front panel and wash with clean water. Wash it with a soft sponge. After using neutral detergent, wash thoroughly with clean water. • When front panel is not removed, wipe it with a soft dry cloth.
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Page 35: Regular Inspection
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 or any other high situation, the inverter work to increase compressor rpm to keep the t e m... -
Page 36: After Sales Service And Warranty
AFTER SALES SERVICE AND WARRANTY WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS. CONDITION CHECK THE FOLLOWING POINTS If the remote controller is not • Do the batteries need replacement? transmitting a signal. • Is the polarity of the inserted batteries correct? (Remote controller display is dim or blank.) •... - Page 37 THE FOLLOWING CASES DOES NOT INDICATE MALFUNCTION <Operation start> The unit is preparing to blow warm air. Please wait. During heating, the operation indicator blinks and air blow stops <In operation> The outdoor unit is defrosting. Please wait. (FROST WASH), Indicates frost wash operation is underway.
- Page 38 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 cooled and then gradually warmed as operation stops.
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