Hitachi RAS-50FH5 Service Manual

Text of Hitachi RAS-50FH5 User Guide:

• Hitachi RAS-50FH5, – 21 – HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER 1 Remove the cover as shown in the figure and take out 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

• Hitachi RAS-50FH5, – 7 – PRECAUTIONS DURING OPERATION ● Do not attempt to operate the unit with wet hands, this could cause fatal accident. ● 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. ● Do not place plants directly under the air flow as it is bad for the plants. ● Please ensure that outdoor mounting frame is always stable, firm and without defect. If

• Hitachi RAS-50FH5, Compressor speed Maximum speed = WBEMAX Outdoor fan See basic operation See basic operation Med Set to 7 hours 0.5hr 6.5hr Lo Indoor fan Sleep key Operation lamp [SLEEP] on the remote controller is lit Timer lamp Hi Med Lo Silent Sleep Vertical air deflector Facing up Horizontal Shut Notes: (1) The sleep operation starts when the sleep key is pressed. (2) When the sleep key is set, the maximum compressor speed is limited to WBEMAX, and the indoor fan is set to “Sleep Silent” (FWSOY). (3) If the operation mode is changed during sleep operation, the ch

• Hitachi RAS-50FH5, – 53 – Room temperature (Cooling/dehumidifying set temperature (temperature set by remote control (+) SHIFTC) Set temperature during rhythm (temperature set by remote control (+) SFTRZM) Final set temperature Thermo judgment Indoor fan Outdoor fan m h tyh r lo oc we N de ep s r os ser pm o C Hi 5 sec. 5 sec. 1 cycle 2.5 sec. 2.5 sec. Thermo OFF 2.5 sec. 4.5 sec. Lo Rhythm Med See basic operation. Lo 15 sec. Lo Rhythm Lo Med Minimum 5min. Minimum 5min. Minimum 5min. 5min. Minimum 5min. 5min. Minimum 5min. 5min. Minimum 5min. 5min.5min. Notes: (1) New cool rhythm is eng

• – 4 – SPECIFICATIONS MODEL FAN MOTOR FAN MOTOR CAPACITOR FAN MOTOR PROTECTOR COMPRESSOR COMPRESSOR MOTOR CAPACITOR OVERLOAD PROTECTOR OVERHEAT PROTECTOR FUSE (for MICROPROCESSOR) POWER RELAY POWER SWITCH TEMPORARY SWITCH SERVICE SWITCH TRANSFORMER VARISTOR NOISE SUPPRESSOR THERMOSTAT REMOTE CONTROL SWITCH (LIQUID CRYSTAL) RAS-50FH5 35W NO NO – NO NO NO NO NO NO YES NO NO NO NO YES(IC) Y

• Hitachi RAS-50FH5, – 27 – 3. MAINTENANCE AT BEGINNING OF LONG OFF PERIOD ● Run the unit by setting the operation mode to (COOL), the temperature to 32°C and the fan speed to HI for about half a day on a fine day, and dry the whole of the unit. ● Switch off the power plug. 1 2 3 REGULAR INSPECTION PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHER EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP. Is the earth line disconnected or broken? Is the mounting frame seriously affected by rust and is the outdoor unit tilted or unstable? Is the plug of power line firmly plugged into the socket? (Please ensure no loose contact between them). Air B

• Hitachi RAS-50FH5, – 15 – RESET FAN SPEED (AUTO) ..... When the AUTO fan speed mode is set in the cooling/heating operation: For the heating operation ● The fan speed will automatically change according to the temperature of discharged air. ● When the difference of room temperature and setting temperature is large, fan starts to run at HI speed. ● When the room temperature reaches setting temperature, fan speed changes to LOW automatically. ● When the difference of room temperature and setting temperature is large, fan starts to

• Hitachi RAS-50FH5, – 29 – MEMO ..................................................................................................................................................................................... ..................................................................................................................................................................................... ..................................................................................................................................................................................... ...............

• Hitachi RAS-50FH5, CONTENTS SPECIFICATIONS --------------------------------------------------------------4 HOW TO USE -------------------------------------------------------------------6 CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------- 30 MAIN PARTS COMPONENT --------------------------------------------- 32 WIRING DIAGRAM ----------------------------------------------------------- 35 CIRCUIT DIAGRAM ---------------------------------------------------------- 39 PRINTED WIRING BOARD LOCATION DIAGRAM---------------- 43 BLOCK DIAGRAM --------

• Hitachi RAS-50FH5, – 23 – FOR USER’S INFORMATION The Air Conditioner And The Heat Source In The Room Not Operating For A Long Time When Lightning Occurs Caution If the amount of heat in the room is above the cooling capability of the air conditioner (for example: more people entering the room, using heating equipments and etc.), the preset room temperature cannot be achieved. ! When the indoor unit is not 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, ple

• Hitachi RAS-50FH5, – 5 – above 50mm above 100mm about 400mm above 300mm must not bend above 100mm 2,300mm or more 1 2 Maximum pipe length 20m Minimum pipe length 5m above 200mm above 700mm above 200mm above 50mm when installed on the ceiling of balcony ( ) above 100mm above 100mm give clearance as wide as possible Plug The Length of Indoor Unit Connecting Cord Figure showing the Installation of Indoor and Outdoor Unit. Direction of Piping There are 4 directions allowed, namely, horizontally perpendicular to the unit, vertically down from right, h

• – 8 – HITACHI DC INVERTER TEM PO R A RY SW IT CH HITACHI INDOOR UNIT NAMES AND FUNCTIONS OF EACH PART Air filter To prevent dust from coming into the indoor unit. (Refer page 25) Front panel Indoor unit indicators Light indicator showing the operating condition. (Refer page 9) Horizontal deflector ● Vertical deflector (Air Outlet) (Refer page 20) Remote controller Send out

• Hitachi RAS-50FH5, – 12 – ˚ C RESET ˚ C 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 -15°C of the outdoor temperature. Press the FUNCTION selector so that the display indicates (HEAT). Set the desired FAN SPEED with the (FAN SPEED) button (the display indicates the setting). (AUTO)

• Hitachi RAS-50FH5, – 26 – 2. Washable 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. Wipe the remote controller thoroughly with a soft dry cloth. ● Wipe the water thoroughly. If water remains 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.

• Hitachi RAS-50FH5, – 10 – AUTO HEAT DEHUMIDIFY COOL FAN FAN SPEED LOW MED HI SLEEPING STOP (CANCEL) START (RESERVE) START/STOP TIME TIMER SET TIMER SELECTOR ON TIMER OFF TIMER AUTO SWING ˚ CH RESET ˚ CH NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT 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 fixed on a wall using the fixture provided. Before fixing it, make sure the indoor unit can be controlled from the remote controller. ● Handle the remote controller with care. Dropping it or getting it wet may comprom

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