Hitachi Eco Compact PC-ARC-A User manual

ORIGINAL INSTRUCTIONS
A12109660A
–
OPERATION MANUAL
–
Eco Compact
Wired Remote Controller
MODELS
PC-ARC-A
PC-ARC-M
PC-ARC-U

Table of Contents
i
Table of Contents
1. Safety Summary ............................................................................................................................................................... 1
2. Setting Names and Functions.......................................................................................................................................... 7
3. Operation Method............................................................................................................................................................ 8
3.1 Operation Mode (Cool, Heat, Dry, Cool and Heat Automatic and Fan Operation).................................................. 8
3.2 Temperature Setting.................................................................................................................................................. 9
3.3 Fan Speed Setting .................................................................................................................................................... 10
3.4 Louver Swing Direction............................................................................................................................................ 11
3.5 Operation ................................................................................................................................................................. 12
3.6 Icon Description ....................................................................................................................................................... 14
4. Menu Operation.............................................................................................................................................................. 16
4.1 Simple Timer Setting ............................................................................................................................................... 17
4.2 GentleCool Comfort Setting .................................................................................................................................... 19
4.3 Capacity Control Setting.......................................................................................................................................... 20
4.4 Sleep Mode Setting.................................................................................................................................................. 21
4.5 AutoBoost Setting.................................................................................................................................................... 23
4.6 Operation Schedule Setting .................................................................................................................................... 24
5. Detailed Menu Operation............................................................................................................................................... 25
5.1 Run Indicator Setting............................................................................................................................................... 26
5.2 Capacity Control Details Setting ............................................................................................................................. 27
5.3 GentleCool Comfort Details Setting........................................................................................................................ 28

Table of Contents Table of Contents
ii
5.4 Sleep Mode Details Setting...................................................................................................................................... 29
5.5 Operation Sound Setting......................................................................................................................................... 30
5.6 IR Receiver Setting ................................................................................................................................................... 31
6. Clock Setting................................................................................................................................................................... 33
7. Operation Schedule Details Setting............................................................................................................................... 35
8. Individual Louver Setting............................................................................................................................................... 37
8.1 Individual Louver Setting ........................................................................................................................................ 37
8.2 Cancel Individual Louver Setting ............................................................................................................................ 38
9. Filter Reminder Reset Setting........................................................................................................................................ 39
10. In Alarm Condition ....................................................................................................................................................... 39
10.1 Power Failure.......................................................................................................................................................... 40
10.2 Electromagnetic Interference (EMI) ...................................................................................................................... 40

1. Safety Summary
1
1. Safety Summary
Singal Words
Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
Indicates information considered important, but not hazard-related (for example,
messages relating to property damage).
For the operation of the product, please read and follow this safety summary strictly. Otherwise, improper operation may cause
injury or death.

1. Safety Summary 1. Safety Summary
2
General Precautions
To reduce the risk of serious injury or death, read these instructions thoroughly and follow
all warnings or cautions included in all manuals that accompanied the product and are
attached to the unit. Refer back to these safety instructions as needed.
• This system, including this controller, should be installed by personnel certied by Johnson Controls-Hitachi Air Conditioning.
Personnel must be qualied according to local, state, and national building and safety codes and regulations. Incorrect
installation could cause leaks, electric shock, re, or an explosion. In areas where Seismic Performance requirements are
specied, the appropriate measures should be taken during installation to guard against possible damage or injury that might
occur in an earthquake. If the unit is not installed appropriately correctly, injuries may occur because of a falling unit.
• Use appropriate Personal Protective Equipment (PPE), such as gloves, protective goggles, and electrical protection equipment
and tools suited for electrical operation purposes.
• When transporting, be careful when picking up, moving and mounting these units. Although the controller may be packed
using plastic straps, do not use them for transporting from one location to another.
Do not stand on or put any material on the controller.
• When installing the controller cabling to the units, do not touch or adjust any safety devices inside the indoor or outdoor units.
All safety features, disengagement, and interlocks must be in place and functioning correctly before the equipment is put into
operation. If these devices are improperly adjusted or tampered with in any way, a serious accident can occur. Never bypass,
wire around, or jump-out any safety device or switch.
• Use only Johnson Controls-Hitachi Air Conditioning recommended, provided as standardized, or replacement parts.
• Johnson Controls-Hitachi Air Conditioning will not assume any liability for injuries or damage caused by not following steps
outlined or described in this manual. Unauthorized modications to Johnson Controls-Hitachi Air Conditioning products are
prohibited as they…
○May create hazards that could result in death, serious injury or equipment damage;
○Will void product warranties;
○May invalidate product regulatory certifications.

1. Safety Summary
3
Take the following precautions to reduce the risk of property damage.
• Do not touch the main circuit board or electronic components in the controller or remote devices.
Make sure that dust and/or steam does not accumulate on the circuit board.
• When installing the unit in a hospital or other facility where electromagnetic waves are generated from nearby medical and/or
electronic devices, be prepared for noise and Electromagnetic Interference (EMI). Do not install where the waves can directly
radiate into the electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical equipment, and
radio communications equipment. EMI may cause the unit to malfunction. The operation of the unit may also adversely aect
these same devices. Install the unit at least 10 . (approximately 3m) away from such devices.
• Locate the controller at a distance of at least 3 . (approximately 1m) from the electric lighting. Otherwise, the receiver part of
the controller may have diiculty receiving operation commands.
• If the wired controller is installed in a location where electromagnetic energy is generated, make sure that the wired controller
is shielded and cables are sleeved inside conduit tubing.
• If there is a source of electrical interference near the power source, install noise suppression equipment (lter).
• During the test run, check the unit’s operation temperature. If the unit is used in an environment where the temperature
exceeds the operation boundary, it may cause severe damage. Check the operation temperature boundary in the manual. If
there is no specied temperature, use the unit within the operation temperature boundary of 32°F to 104°F (0°C to 40°C).
• Perform properly electrical wiring work. The details of the electrical wiring connection are described in the "Electrical Wiring"
of corresponding Installation and Maintenance Manual.
• The Eco compact wired remote controller has near eld communication (NFC), which can improve service and installation. If
the wired remote controller may be accessible to unauthorized third-party, please set the NFC to "Disable" by referring to the
installation manual.

1. Safety Summary 1. Safety Summary
4
Installation Precautions
Take the following precautions to reduce the risk of electric shock, fire, or explosion
resulting in serious injury or death:
• If the remote sensors are not used with this controller, then do not install this controller…
○In a room where there is no thermostat.
○Where the unit is exposed to direct sunshine or direct light.
○Where the unit is in close proximity to a heat source.
○Where hot/cold air from the outdoors, or a draft from elsewhere (such as air vents, diffusers, or grilles) can affect air
circulation.
○In areas with poor air circulation and ventilation.
• Perform a test run using the controller to ensure normal operation. Safety guards, shields, barriers, covers, and protective
devices must be in place while the compressor/unit is operating. During the test run, keep ngers and clothing away from any
moving parts.
After installation work for the system has been completed, explain the "Safety Precautions," use, and maintenance of the unit to
the customer according to the information in all manuals that accompanied the system. All manuals and warranty information
must be given to the user or left near the Indoor Unit.

1. Safety Summary
5
Electrical Precautions
Take the following precautions to reduce the risk of electric shock, fire, or explosion
resulting in serious injury or death:
• Only use electrical protection equipment and tools suited for this installation.
• Insulate the wired controller against moisture and temperature extremes.
• Use specied cables between units and the controller.
• Communication cabling must be a minimum of 18-Gauge, 2-Conductor, Stranded Copper.
Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive
electrical noise to reduce the potential for communication errors. When shielded cabling is applied, proper bonding and
termination of the cable shield is required as per Johnson Controls-Hitachi Air Conditioning guidelines. Plenum and riser
ratings for communication cables must be considered per application and local code requirements.
• The polarity of the input terminals is important, so be sure to match the polarity when using contacts that have polarity.
•
Highly dangerous electrical voltages may be used in this system. Carefully refer to the wiring diagram and these instructions when
wiring. Improper connections and inadequate grounding can cause serious injury or death.
• Before installing the controller or remote devices, ensure that the indoor and outdoor unit operation has been stopped.
Further, be sure to wait at least ve minutes before turning o the main power switch to the indoor or outdoor units.
Otherwise, water leakage or electrical breakdown may result.
•
Do not open the service cover or access panel to the indoor or outdoor units without turning OFF the main power supply. Before
connecting or servicing the controller or cables to indoor or outdoor units, open and tag all disconnect switches. Never assume
electrical power is disconnected. Verify with a meter and equipment.
• Use an exclusive power supply at the controller’s rated voltage.
• Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit breaker, and so forth) with the
specied capacity. Ensure that the wiring terminals are tightened securely to recommended torque specications.

1. Safety Summary 1. Safety Summary
6
• Clamp electrical wires securely with a cord clamp aer all wiring is connected to the terminal block.
In addition, run wires securely through the wiring access channel.
• When installing the power lines, do not apply tension to the cables. Secure the suspended cables at regular intervals, but not
too tightly.
• Make sure that the terminals do not come into contact with the surface of the electrical box.
If the terminals are too close to the surface, it may lead to failures at the terminal connection.
• Do not pour water on the controller as it could cause electric shock and/or damage the unit.
Do not use strong detergent such as a solvent. Clean with a so cloth.
• Check that the ground wire is securely connected. Do not connect ground wiring to gas piping, water piping, lighting
conductor, or telephone ground wiring.

2. Setting Names and Functions
7
2. Setting Names and Functions
The gure below shows all the functions for reference. The actual display during operation is dierent.
NOTES:
• The backlight turns o 30 seconds aer the last operation. If you press any button, the backlight is turned on.
(The button pressed to turn on the backlight is not functional.)
• Make sure to press the buttons lightly with your ngertips.
• Do NOT press the buttons or anything with sharp points, such as a ball point pen. The operational functionality
of the wired remote controller may become damaged.
Operation Component
Display Part
ON/OFF Button
Operation Mode Button
Fan Speed Button
Menu Button
Directional Key
Current Time
Louver Direction
Operation Mode
Run Indicator
Set Temperature
Fan Speed

2. Setting Names and Functions 3. Operation Method
8
3. Operation Method
3.1 Operation Mode (Cool, Heat, Dry, Cool and Heat Automatic and Fan Operation)
Heat mode is only available when the indoor unit supports cooling and heating. Cooling only machine cannot
support heating.
1. Operation mode setting
Step1. Home screen is displayed.
Step2. Press " " to set "Operation Mode".
The operation mode is switched in the following order:.
NOTES:
• The function selection setting is required for "Auto" operation. Please contact your distributor for details.
• "Dry" mode may not be available depending on the type of indoor unit.

3. Operation Method
9
3.2 Temperature Setting
1. Temperature setting
Step1. Home screen is displayed.
Step2. By pressing " ", the temperature is increased by 0.5°C
to a maximum of 30oC.
NOTES:
• Depending on the type and setting of the indoor unit, it may not be possible to set the temperature by 0.5oC.
• The unit of setting temperature can be set in "Temperature Unit Setting" of the "Function Selection" mode.
• The max./ min. temperature may dier depending on the type of indoor unit.
• Minimum and maximum temperature can be set by selecting a cooling lower limit (or heating upper limit) in
the "Function Selection" mode.
• When the "Automatic Reset of Setting Temperature" function is selected, the temperature is automatically
returned to the preset temperature aer the temperature set-point change.
• Contact your distributor for detailed information about "Automatic Reset of Setting Temperature" and
"Temperature Range Restriction" functions.
By pressing " ", the temperature is decreased by 0.5°C.
• Cooling, Dry, Fan operation: A minimum of 19oC, 20oC in United Arab Emirates
（UAE).
• Heating operation: A minimum of 17oC.

3. Operation Method 3. Operation Method
10
3.3 Fan Speed Setting
1. This function is used to set fan speed.
Step1. Home screen is displayed.
Step2. Press " " to set "Fan Speed".
The fan speed changes as below depending on the
indoor unit type.
NOTE:
• Some of the fan speed settings as "High2" or "Auto" may not be available depending on the indoor unit type.
Auto LowMed High
FAN SPEED FAN SPEED
FAN SPEED FAN SPEED FAN SPEED
High2

3. Operation Method
11
3.4 Louver Swing Direction
1. This function is used to set the louver direction.
Step1. Press " " (On/O). Make sure that the air conditioner
is ON. Press " " and select "Louver Direction", refer to
"4. Menu Operation".
Step2. By pressing " " or " ", the louver direction changes as
the right diagram, and the direction of dierent types of
louver is displayed dierently.
: Auto swing operation starts. At this time, the
louver swings repeatedly on the LCD.
Step3. Press " " to save the setting and return to the home
screen.
LCD Indication COOL, DRY HEAT, FAN
Auto-Swing
Range for COOL and DRY
Auto-Swing range for COOL and DRY
Range for HEAT and FAN
Auto-Swing range for HEAT and FAN
NOTES:
• For the indoor unit without the auto louver mechanism, the indication of "Louver" is NOT available on the
LCD.
• The air ow angle is dierent for each indoor unit type. Check for detailed information in each Operation
Manual for indoor unit.
• The louver position on the LCD and the actual louver position may not match during the Auto-Swing.
To set the louver positions, set the angle aer checking the position on the LCD.
• The louver may NOT stop immediately aer the button is pressed.

3. Operation Method 3. Operation Method
12
3.5 Operation
NOTES:
• Once the temperature and Fan speed settings are set, the setting status is stored and does not need to be
reset.
• To change the settings, refer to Page 8 and Page 10.
3.5.1 Operation Start
1. Operation starts.
Step1. Press " " (On/O).
→ The run indicator turns ON and the operation starts.

3. Operation Method
13
3.5.2 Operation Stop
1. Operation stops.
Step1. Press " " (On/O).
→ The run indicator turns OFF and the operation stops.
NOTE:
• Aer the heating operation is stopped, it may continue to FAN operation for about 2 minutes.

3. Operation Method 3. Operation Method
14
3.6 Icon Description
The status of the wired remote controller is displayed on the home screen.
NOTE:
• It may not be displayed depending on the type of outdoor unit or indoor unit you are using.
No. Icon Description
1 It is time to clean the air filter.
2
During the defrosting operation, the defrosting light turns on and the indoor fan stops.
When the operation is stopped during the defrosting operation, the operation light or the run
indicator goes out, but the operation continues and stops after the defrosting is completed.
3 When setback operation is enabled and the card key is removed (when no one is present). (*1)
4 The compressor cannot be operated because it is preheating.
5 An alarm is in progress.
6 The operation lock is set.
7 Displayed when using the central controller. Remote control operation is restricted.
8 Indicates the service function is performed.
9 Displays the setting temperature.
10 Displays the room temperature. (*2)
11 The operation is stopped.

3. Operation Method
15
No. Icon Description
12
This is the main remote controller setting.
Use the main remote controller to set the main capacity control setting.
In the case of a single unit, the main does not light up.
13 In communication with the indoor unit.
14 The on timer is set.
15 The off timer is set.
16 "GentleCool Comfort" mode is ON.
The icon switches as "GentleCool Comfort Level" changes: Low: , Med: , High:
17 "Capacity Control" mode is ON.
The icon switches as "Capacity Control Level" changes: Low: , Med: , High:
18 "Sleep Mode" is ON.
19 "AutoBoost" mode is ON.
20 "On Timer" is set in the operation schedule.
21 "Off Timer" is set in the operation schedule.
22 NFC mode is ON.
23 NFC mode is OFF.
(*1): The default setting is cooling: set temperature +2.5°C, heating: set temperature -2.5°C.
If you want to change the corrective value for this setback operation, please contact the distributor for
more detailed information.
(*2): It depends on the settings of the wired remote controller.

3. Operation Method 4. Menu Operation
16
4. Menu Operation
1. Menu Display
Step1. Press " " to display the menu screen.
Step2. By pressing " ", the menu screen changes as below.
NOTES:
• If some features are not supported on the indoor unit, the relevant setting will be skipped automatically.
• If schedule timer is not set, "Operation Schedule Setting" screen is not available. For how to set the schedule
timer, please refer to "7. Operation Schedule Details Setting".
Home Screen Louver Direction Simple Timer Setting GentleCool Comfort Setting
Operation Schedule Setting AutoBoost Setting Sleep Mode Setting Capacity Control Setting

4. Menu Operation
17
4.1 Simple Timer Setting
This function is used to start or stop the unit operation at the set time.
NOTES:
• If clock has not been set, the On/O setting will be skipped automatically.
• When the wired remote controller is stopped, only "On Timer" can be set. And when the wired remote
controller is ON, only "O Timer" is available.
• "On Timer" or "O Timer" are not possible to turn on/o the unit while the remote control is prohibited.
• Aer the set time is reached, the timer settings are canceled.
• "O Timer" setting will be automatically canceled while the wired remote controller is turned o.
1. Set the simple timer.
Step1. Select "Simple Timer Setting", refer to "4. Menu
Operation".
Step2. Press " " or " " to set the desired time.
• When the wired remote controller is ON, set the
"O Timer". Icon
Set Value