Hitachi RPS-90AN User manual

HITACHI SPLIT-TYPE AIR CONDITIONERS
Installation, Operation and Maintenance
INSTRUCTIONS MANUAL
─INVERTER DRIVEN ─
─AIR-COOLED TYPE ─
IMPORTANT:
READ AND UNDERSTAND THIS
INSTRUCTION MANUAL BEFORE
USING THIS AIR CONDITIONER.
KEEP THIS MANUAL FOR FUTURE
REFERENCE.
65MP3195
Models :
Indoor Unit Outdoor Unit
RPS-90AN + RAC-90JK

IMPORTANT NOTICE
●HITACHI pursues a policy of continuing improvement in design and performance of its
products. Specification/Design are subject to change without prior notice.
●HITACHI cannot anticipate every possible circumstance that might involve a potential
hazard.
●This air conditioner is designed for standard air conditioning only. Do not use for other
purposes such as drying clothes, refrigerating foods or for any other cooling process.
●The installer and system specialist shall secure safety against leakage according to local
Regulations or standards.
●No part of this manual may be reproduced without written permission.
●Signal words (DANGER, WARNING and CAUTION)are used to identify levels of hazard
seriousness. Definitions for identifying hazard levels are provided below with their
respective signal words.
Immediate hazards which WILL result in severe personal injury or
death.
Hazards or unsafe practices which COULD result in severe personal
injury or death.
Hazards or unsafe practices which COULD result in minor personal
injury or product or property damage.
Useful information for this operation and/or maintenance.
●If you have any questions, contact your installer, dealer of HITACHI or our customer care.
●This manual gives you description and information on how to operate this air conditioning unit.
●This air conditioner has been designed from the following temperatures.
Indoor Temperature ( oC ) Outdoor Temperature ( oC )
Maximum Minimum Maximum Minimum
32DB/23WB 21DB/15WB 43DB 21DB
This manual should be considered as a permanent part of the air conditioning equipment
and should remain with the air conditioning equipment.
：
▲DANGER
！
▲WARNING
！：
NOTE
：
▲AUTIONC
！
：

—CONTENTS —
No. Item Page
Operation Instruction ……………………………………………………………….. 1
1. PREPARATION
1.1 Installation Location ……………………………………………………………….. 8
1.2 Installation Space …………………………………………………………………...8
1.3 Foundation …………………………………………………………………………..10
1.4 Unit Check …………………………………………………………………………..10
2. INSTALLATION
2.1 Anti-tumbler for Indoor Unit ………………………………………………………11
2.2 Anti-tumbler for Outdoor Unit………………………………………………………12
3. REFRIGERANT AND DRAINAGE PIPING
3.1 Preparations ………………………………………………………………………..13
3.2 Refrigerant Piping ……………………………………………………………….....14
3.3 Drainage Piping ……………………………………………………………….........15
4. EVACUATION AND REFRIGERANT CHARGE
4.1 Evacuation Procedure ………………………………………………………........16
4.2 Refrigerant Charge ……………………………………………………………….16
5. ELECTRICAL WIRING
5.1 Schedule Check………………………………………..........................................17
5.2 Main Power Wiring Procedures…………..........................................................17
5.3 Main Power Wiring Specification......................................................................18
5.4 Control Wiring……………………………………………......................................18
5.5 Grounding Specification...................................................................................18
6. TEST RUNNING
6.1 Final Installation Check………………...............................................................19
6.2 Preparation…...................................................................................................19
6.3 Test Running....................................................................................................19
6.4 Safety and Control Device Setting…................................................................20
7. MAINTENANCE
7.1 Components………………………………………………………….......................21
7.2 Lubrication…………………………………………………………………...............21
7.3 Refrigerant Charge…………………………………………………………….........21
7.4 Compressor Removal…………………………………………………………........21
7.5 Start-Up After Extended Shutdown………………………………………………..22
7.6 Replacement of Parts……………………………………………….......................22

Operation Instructions
Operation Instructions
◆Name of Parts
INDOOR UNIT
- 1 -
Horizontal Louve
r
Vertical Louver
Air Outlet
Front Cove
r
OUTDOOR UNIT
Air Inlet
Air Outlet
Liquid Refrigerant
Piping
Gas Refrigerant
Piping
Air Inlet
Field and Control
Wiring
Power Supply
Main Circuit
Breaker
Leakage Breaker

Operation Instructions Operation Instructions
◆Precautions on Usage
- 2 -
It may cause accidents and may injure
and damage the units.
Don’t insert any material into the air
inlet and air outlet.
Please use fuse/circuit breaker with
proper amperage.
Never use metal or copper wire as a fuse to
avoid fault or occurrence of fire hazard.
If there are heat sources which exceeds the air
conditioning capacity in the room (room with many
people entering or when using heat producing
appliances), set room temperature can not be
reached.
Overloaded heat source should be reduced.
It may cause fire.
Don’t spray flammable gas toward the air
conditioner.
During cooling operation,
please don’t open
windows, entrances and
exits unless necessary
and minimize as possible
the number of persons
entering or leaving the
room.
Doors or windows should be closed
properly to prevent the cooled air to leak
outside the room.
Set up window curtains or window blinds.
It can insulate the
heat source
coming through
the windows.
When there is a possibility of lightning strike, turn the
unit off to protect the air conditioner, and switch off
the power switch. Make sure that the unit is provided
with
g
round.
When there is possibility of lightning strike.
The setting of room temperature should be
suitable.
Adjust the temperature setting button
to a suitable index to maintain the
most comfortable temperature. Too
high or too low temperature will
cause discomfort. (a temperature
difference of 5oC to 7oC between the
indoor and the outdoor is
appropriate).

Operation Instructions
Operation Instructions
◆Wired remote controller (RC-A01ET1)
2. Accessory assembly (plug x2, screw x2, cable tie x2)
1. Wired remote controller x1 (communication wire x1, length = 9m)
●Parts inside the box (Please check)
(For safety, please obey the following items)
UTION▲CA
！
1. Please read the user’s manual carefully before installation, keep this manual for future reference.
2. This wired remote controller is used for room air-conditioner only and not for any other extended use.
3. Do not install at places as below:
3.1. the place with oil spray of sulfur gas (fire, deformation, corruption, damage will result)
3.2 the place near coast and the salty environment will cause corrosion.
3.3 the place that children can easily touch.
3.4 the place near heat (fire).
3.5 the place of high humidity.
4. Use for the place where install medical instruments with electromagnetic wave, please watch out the
mal-operation of this devce.
4.1 when installation, do not let the launching side of electromagnetic wave forward this device directly.
4.2 keep away from the source with electromagnetic wave at least 3m above. For example: radio
4.3 If noise signals generated by the unit, please add noise filter to countermeasure.
5. Because heat element designed inside, the surface is warm when we touch, this is a normal
phenomenon.
6. Do not pull out the communication wire in order to avoid the poor signal transmission.
stallation and Wiring▲In
！
1. Do not install at places where flammable objects and flammable gases exist, otherwise it may occur fire.
2. Never install the remote controller on an unstable base or fixed incompletely. It can fall down easily and
cause fire, electric shock, even injury of a person.
3. Please follow the rules by the corresponding country’s national legislation to begin the wiring process. Be
sure to use the specific electric shock loop in order to avoid the insufficient of power volume and any fire
or electric shock caused by poor or wrong installation.
4. Please contact your agent for installation, improper self installation may cause electric shock and fire.
5. Please choose the specified wire for the connection between indoor unit and outdoor unit. If wrong
specification of wire is used, it will cause electric shock.
6. Please turn off the power source before open the service cover for wiring in order to avoid the electric
shock.
- 3 -

Operation Instructions Operation Instructions
●Installation of Remote Controller
1. Separate the base of the wired remote controller. Please follow the procedure:
Use flat screw-driver to insert the groove and rotate lightly.
Be careful, do not break the claws near the groove, if the claws are broken then wired remote controller
will not easily fix on the base.
2. Installation for screws.
Please use the screws attached in the accessory assembly, fixed by opposite angle position.
Name of each part
HITACHI
Main Function Introduction
NOTE ! Always press once to turn the Remote Control LCD light ON.
ON / OFF
∗Function – To operate the power ON and power OFF of the unit.
•POWER ON: First time pressing the power ON button, the LCD will light ON.
Pressing the power ON button the second time the LCD light will turn off and the
ON/OFF button will display blue light background indicating that the unit is already
running.
•POWER OFF: First time pressing the power OFF, the LCD will light ON. Pressing
the power OFF button the second time the LCD light and the ON/OFF button blue
light backgorund will turn off.
- 4 -

Operation Instructions
Operation Instructions
- 5 -
MEMORY
∗Function – To choose the available functions in the remote control.
MENU / BACK
•Press this button can choose detail functions.
∗Function – To save settings in the remote control.
•Choose
「MEMORY」function and there are 2 memory set that can be saved.
(Memory setting need to enter from main function display)
∗Function – To set the desired room temperature.
ROOM TEMP.
TIMER
FAN SPEED
•Temperature varies from
16°C ~ 32°C.
•Standard ▲3°C ~ ▼3°C
•Auto-control mode
•The temperature is increased by 1°C by pressing ▲button
(Max. 32°C).
•The temperature is decreased by 1°C by pressing ▼button
(Min. 16°C).
∗Function – To start or stop operation after a set time.
•Timer 「ON , OFF」mode. To set the timer the unit must be
power OFF.
•TO SET ON: Press ►for timer ON operation and the
display will appear 1 Hr as starting time. Then adjust the
time by pressing ▲▼ (1~24 Hr). Each press is increased
or decreased by 1Hr. And the unit will automatically
shutdown after the set time.
•TO SET OFF: Press the sleep button and the controller
will automatically set the timer OFF then the unit will
turn ON.
∗Function – To set the desired mode operation of the unit.
MODE •By pressing the MODE button you can choose COOL,
DRY, FAN operation.
•Three speed can be chose and easily understand the status
by text and figure.
∗Function – To set the desired fan speed of the unit.
•Four speed can be chose and easily understand the status
by text and figure.
•During Cool / Fan mode you can adjust the fan speed to
Qlow, Low, Med, High.
•During Dry mode you can adjust the fan speed to
Qlow and Low only.

Operation Instructions
- 6 -
POWERFUL
SLEEP
Operation Instructions
∗Function – To set to high cool operation.
•Pressing the powerful button once the LCD light turn ON. By pressing it second
time will produce “BEEP” sound.
∗Function – To remove the timer setting in the unit.
•By pressing the sleep mode, the controller will automatically shutdown the timer
OFF then the unit will turn ON.
∗Function – To operate the Auto Sweep function of the unit.
AUTO SWEEP •TO SET ON: Choose MENU button, the LCD light will turn ON. By pressing it
second time the menu display for Auto Sweep (VERTICAL) will appear. Choosing
this function by pressing ▼button then press ENTER to turn ON the auto sweep
function.
•TO SET OFF: Choose MENU button, the LCD light will turn ON. By pressing it
second time the menu display for Auto Sweep (VERTICAL) will appear. Choosing
this function by pressing ▼button then press ENTER to turn OFF the auto sweep
function.
●Wiring
1. Method of connecting to air-conditioner:
1.1 Remove the front cover and electric box cover of the Indoor unit.
1.2 Connect the communication wire to the PCB of the Indoor unit (connector no: CN22)
1.3 Re-install the electric box cover and front cover, be careful don’t clip the wire.
●Abnormality
1. When abnormality occurs, there will be a display on the control panel indicating
“PRESS [ON/OFF] SWITCH TO RESTART”
2. Reset Button – when errors happen (the display is interfered by noise signal and system can’t
operate). Please use a small pin to insert in the hole and press 3 seconds above, under power ON
status. Then it will return to its initial factory setting.
●Power Failure
1. All the indications are OFF.
2. Once the unit is stop by power failure, the unit will not be started again although the power
recovers. Perform the starting procedures again.
3. In case of instantaneous power failure within 2 seconds the unit will be started again automatically.

Operation Instructions
Operation Instructions
◆Troubleshooting
Unit does not start:
1. Is the main power source switch to the unit ON?
2. Is the main fuse normal?
Poor cooling operation:
1. Are there any obstacles which hamper sufficient air to the indoor unit and outdoor unit coil?
2. Check the temperature setting to make sure that it is set at the desired temperature.
3. Check the air filter if it is dirty or clogged.
- 7 -
Please contact your service center if the problem is still not solved.
Do not try to repair the unit by yourself.
▲ARNINGW
！
◆Maintenance
1. Clean or replace the air filter.
2. Clean the cabinet with clean dry cloth.
3. Clean the condensate drain pan and the drain piping.
4. Clean the condenser and evaporator coil. Call your serviceman to do this type of work.
5. Check for abnormal sound and vibration. If you find abnormal sound and vibration, stop the unit and contact
your service center for proper maintenance.
2
▲WARNING
！
Switch the unit OFF before cleaning the air filter.
Removing
off air filter.
Turn the air
inlet open.
1