HITACHI RAK-XJ18QHAE Series Room Air Conditioner Instructions

HITACHI RAK-XJ18QHAE Series Room Air Conditioner

Specifications

• Model: RAK-XJ18QHAE, RAK-XJ25RHAE, RAK-XJ35RHAE, RAK-XJ50RHAE
• Width : 950mm
• Height: 294mm
• Depth: 230mm

Product Information

Safety Precautions

• Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.
• This appliance is filled with R32.
• Pay special attention to signs of “ Warning” and “ Caution”. The “Warning” section contains matters that, if not observed strictly, may cause death or serious injury. The “Caution” section contains matters which may result in serious consequences if not observed properly. Please observe all instructions strictly to ensure safety.
• The signs indicate the following meanings. (The following are examples of signs.)
• Please keep this manual after reading it.

Precautions During Installation

• Warning: Do not place the earth line near water or gas pipes, lightning conductors, or telephone earth lines. Improper installation may cause electric shock or fire.
• Caution: Connect the earth line as directed.

Precautions During Shifting or Maintenance

• Warning: Before shifting or maintenance, turn off the unit and circuit breaker to avoid faults, short circuits, or fire. Contact your agent if needed.

Precautions During Operation

• Warning: Strictly observe all precautions during operation to prevent accidents. Do not touch certain parts during operation to avoid danger.

Product Usage Instructions

Operation Range

Operation mode: Single, Multi
Outdoor temperature: Refer to the manual for specific details on operating temperatures.

Names and Functions of Each Part

• Indoor Unit: Air filter, Front panel, Ioniser, Indoor unit indicators, Horizontal deflector, Vertical deflector, ECO Sensor
• Remote Controller: Sends operation signals to the indoor unit for overall operation.

Model Name and Dimensions

• Model: RAK-XJ18QHAE, RAK-XJ25RHAE, RAK-XJ35RHAE, RAK-XJ50RHAE
• Width: 950mm
• Height: 294mm
• Depth: 230mm

Indoor Unit Indications
Detailed information on operation lamps and indicators for monitoring unit status and functions.

If the power stays on and the unit is not operated, power is slightly consumed in the control circuit. The power is saved by turning off the power switch (or the circuit breaker when the power is supplied from the outdoor unit).

Operate Air Conditioner with Smartphone
Instructions on how to operate the air conditioner using a smartphone for added convenience.

Attaching the air purifying filters (Accessories)  to the filter frame.

• Attach the air purifying filters to the C-case to the designated position.
• The cooling capacity is slightly weakened and the cooling speed becomes slower when the air purifying filters are used.
• The air purifying filters are not washable. It is recommended to use a vacuum to clean. It can be used for 1 year. When you want to renew it, please ask your sales agent.

Built-in iCloud Go module
iCloud Go is a cloud-based solution for remotely controlling your Hitachi air conditioning system via smartphone. You can operate the air conditioner from outside the home with your smartphone and check the operating status.

What You Should Confirm When Using the Service

Internet environment at home

• To use the service, FTTH (optical fiber) ADSL / CATV (cable TV), and other Internet services, a broadband line capable of communication is required. Not available on dial-up lines.
• For details on Internet connection, contact your provider or carrier. Please check your contract.
• Internet communication charges are the responsibility of the customer.

Smartphone

• iOS (iPhone, etc.) 13.0 / Android 9.0 or later (as of October 2023)
• To confirm the OS version, check on your smartphone, or contact your smartphone manufacturer.
• Make sure that you can connect to the router with a wireless LAN.
• Tablets are not guaranteed to work.

Wireless LAN router
(Hereinafter router)

• Please use a router that supports the 2.4GHz band.
• For security, be sure to use a router that can set the encryption method WPA2 or WPA (either TKIP or AES). We recommend the WPA2 (AES) encryption method. For the setting procedure, refer to the instruction manual of the router.
• Routers that support only WEP cannot be used.
• Mobile routers are not guaranteed to work.

Initial Settings

|Please install the airCloud Go app on your smartphone

1. Search for the airCloud Go app
2. For Android models: Open Google Play. Android is a trademark and registered trademark of Google LLC.
3. For iOS models (iPhone): Open the App Store. iPhone is a trademark and registered trademark of Apple Inc.
4. Please install it according to the screen
5. To use the dedicated app, you need to read and agree to the Terms of Service.
6. The dedicated application is free of charge, but to download the application, additional communication fees may be charged based on the customer’s contract for Internet data.
7. The names and icons of the dedicated apps are as of October 2023. It may be changed by updating the application.

Notes:

• The first registered user becomes a group administrator by default manages other users and also sets access rights for other users.
• When using multiple users, the registered user should invite other users to register.

Notes on Wireless LAN

WARNING

• Do not enable remote features near those with a cardiac pacemaker or defibrillator
  If it is too close, radio waves may affect the operation of pacemakers and other devices.

Use frequency band
In the frequency band used by this air conditioner, in addition to industrial, scientific, and medical equipment such as microwave ovens, private radio stations for identification of mobile objects (radio stations that require a license) and specified power radio stations (radio stations that do not require a license) and amateur radio stations (radio stations that require a license) are in operation.

• Before using this air conditioner, make sure that local radio stations for identification of mobile objects, specified low-power radio stations and amateur radio stations are not operating nearby.
• If any harmful radio interference occurs from the air conditioner to the mobile station identification radio station, immediately stop using the radio wave and contact the local Johnson Controls-Hitachi Air Conditioning (Hereinafter JCH) technical support team to consult about measures for avoidance.
• In addition, if you have any problems such as harmful radio interference from the air conditioner to the specified low-power radio station for identifying the moving object or amateur radio station. Please contact the local JCH technical support team.

How to use frequency

It means that the entire band from 2.400 GHz to 2.4835 GHz can be used and the band of the mobile identification device can be avoided.

Equipment certification
This air conditioner has a built-in wireless device that has been approved for construction design based on the Radio Law, so a license for a wireless station is not required. However, the following acts are prohibited by the Radio Law.

• Disassemble / modify the wireless device.
• Remove the main unit nameplate.
• Erase the indication on the nameplate of the main unit.

Security measures

• Since wireless LAN transmits and receives using radio waves, there is a risk of unauthorized access. Please take security measures for the wireless LAN router (hereinafter, router) to ensure data security. Please note that JCH does not take any responsibility if a problem occurs without implementing security measures.
• We recommend that you set a password (encryption key) for the router of at least 8 characters and no more than 63 characters. (Refer to the instruction manual of the router for the limitation of the number of characters.) When the router password (encryption key) is changed, please change the same password on the iCloud Go app.

About Firmware

• This air conditioner has the function of connecting to our server through the Internet and automatically updating its firmware to the latest version. During the update, wireless communication may be interrupted and communication may be interrupted or can be slow.
• Do not analyze or modify the firmware.

Usage Restrictions
Please note the following restrictions on use. JCH will not be liable for any failure to observe the restrictions or for any incidental damage resulting from the use or inability to use the air conditioner.

• Do not connect to wireless networks for which you do not have usage rights. Unauthorized wireless networks (*SSID) that you do not have permission to use may be displayed during an automatic search of the wireless network environment.

  • SSID is a name to identify a specific network in wireless LAN. If this SSID matches on both devices, communication is possible.

• Do not use where magnetic fields, static electricity, or radio interference may occur.
  If used near the following devices, communication may be interrupted or the speed may decrease.

  • Microwave oven during cooking
  • Bluetooth compatible device
  • Other wireless LAN devices (wireless WEB cameras, PC devices, etc.) except the router (wireless LAN router) that communicates with this air conditioner.

• If there are metallic objects or walls made of steel or reinforced concrete between the unit and the router, the communication signal may be jammed, leading to loss of communication thus preventing the control of the unit by App.

• For technical support, please contact your installer or local distributor”. Website link : www.hitachiaircon.com

Information about Using Wireless LAN

• The air conditioner can be operated from a place that is not directly visible. Therefore, for example, a situation may occur where a person in the room turns ON while another person turns OFF from outside. Especially when infants, children, the elderly, the sick, or the physically handicapped are indoors, use it when a person who can manage it is nearby. In addition, before using, please understand the condition of the room before operating.
• Your smartphone and air conditioner communicate data via our server using the Internet. Therefore, due to the condition of the communication line of your mobile phone company or provider, the setting of your router, or the stop of service due to maintenance of the airCloud Go server, data communication may not be possible, and the system may not or delay operate.
• After connecting the air conditioner to the router, you can perform data communication. To use, you will incur the broadband internet charges and your smartphone network provider charges as per the customer contract.
• If the air conditioner is not operated for a long time or if the home internet network has been completely shut down, it is advisable to initialize the airCloud Go module and reconnect the same.
• Please do not inform other people about the SSID / KEY of this air conditioner.
• Johnson Controls Air Conditioning guarantees repair of this air conditioner under certain conditions. However, we do not guarantee that stored data is lost or damaged.
• This air conditioner stores network setting information. When disposing of this air conditioner, initialize the built-in airCloud Go module (Refer to page 11 Restore Factory Setting).
• Customers are responsible for resolving any deficiencies in the Internet and wireless environment at home.
• If you operate the air conditioner using the app, some of the set functions may be canceled.

SSID & KEY Label Paste
SSID & KEY label details of the Air conditioner’s built-in airCloud Go module are posted here for your reference. Please keep it safe for future requirements during the pairing process and please write down the installation location (like living room, bedroom, etc.) on the label. The AC type is “2” which is for models with a built-in airCloud Go module.

About Software License
The software installed in this air conditioner is composed of multiple independent software modules, and each software module has the copyright of JCH and a third party. This air conditioner also contains software modules developed or created by us, but this software and accompanying documents have proprietary rights and intellectual property rights of JCH. These are protected by copyright law and other laws.

Initial Setting of App
To download the iCloud Go application, search for it in the App Store® 1 or Google Play *2. Alternatively, you can scan the following code with your smartphone to directly access the application download page.

• 1 App Store® is a service mark of Apple Inc.
• 2 Google Play and the Google Play logo are trademarks of Google LLC.

NOTE: an internet connection is required to download, update, or use iCloud Go (user registration, etc.). Customers are responsible for internet communication costs.

Registration on App
Please follow the airCloud Go App guidance to complete the registration on the App.

Air Conditioner Registration and Router Connection
To proceed, you must be logged into your iCloud Go app. Make sure that the air conditioner is ready to be powered on, then follow in-app guidance to add the air conditioner. For step-by-step guidance, you can scan the following code with your smartphone. ****

Initialization of the Built-in airCloud Go Module
Reset the internal settings (restore the factory settings) by remote controller. Please note that the configuration will be cleared and the pairing procedure will be required to do again to use the built-in airCloud Go module.

1. Press the Mode key and ON Timer key simultaneously, pointing the remote controller towards the air conditioning unit.
2. Make sure the Wi-Fi LED on the Indoor unit flashes 4 times repeatedly for about 20 seconds (the LED is turning off between 2 sequences of 20 seconds).
3. Restart the unit (turn the power OFF for 1 minute, then turn the power ON again) and check that the Wi-Fi LED is blinking 3 times.

If the Wi-Fi LED is indeed flashing 3 times, the pairing mode is well activated and factory settings have been restored.

Status Indicator (LED Indicator may light up while the air conditioner is turned off).

LED OFF

| •  Pairing time out occurs (after 10 mins.) & configured router is not detected.

• The air conditioner is not plugged in.

• The Built-in airCloud Go module and the air conditioner are not connected.

LED ON

| •   The connection between the Built-in airCloud Go module and the router is completed.

•   The operation can be conducted through a smartphone.

LED flashes 3 times| Waiting to connect to the Wi-Fi router using AP mode.
LED flashes 4 times| Restoring factory setting procedure has started.
LED flashes 5 times| Communication error between air conditioner & Built-in airCloud Go module

(Error detection time: approx 24 mins.)

LED flashes with 4sec ON/1sec OFF| Router connection error.
LED flashes with 4sec ON/3sec OFF| Cloud connection error. (Error detection time: approx 30 mins.)

Note:
Please try to power OFF/ON your air conditioner from training switch when an error occurs. *”Wi-Fi” is a trademark or registered trademark of the “Wi-Fi Alliance”.

Maintenance

CAUTION
Cleaning and maintenance must be carried out only by qualified service personnel. Before cleaning, stop the operation and switch off the power supply.

Air Filter
Please clean the filter once about every two weeks. By doing so, energy costs are saved. In case the air filter is full of dust, the airflow will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to clean the filter following the procedure below.

1. Open the front panel carefully and remove the filter.
2. Vacuum dust from the air filter using a vacuum cleaner. If there is too much dust, wash the filter with a detergent and rinse it thoroughly. After that, dry it in the shade.
   • Set the filter with a “FRONT” mark facing front, and slot it into the original state by putting the filter on the guide. and insert the hook into the hole.
   • After attaching the filters, push the front panel at three arrow portions as shown in the figure, and close

CAUTION

• Do not wash with hot water at more than 40°C. The filter may shrink.
• Do not wash by pressing hard on the filter, bending too much, or using a brush. The filter may break.
• 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.
• Don’t operate the unit without a filter. Fault may occur if you continue.

Cleaning of Front Panel

• Remove the front panel and wash with clean water. Wash it with a soft sponge. After using a neutral detergent, wash thoroughly with clean water.
• When the 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 the indicators or signal receivers of the 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.

Removing the Front Panel

1. Push the end of the right-side arm outward to release the tab.
2. Move the left-side arm outward to release the left tab, and then pull the panel towards you.

Attaching the Front Panel

1. Insert the shaft of the left arm along the step on the unit into the hole.
2. Securely insert the shaft of the right arm along the step on the unit into the hole.
3. Make sure that the front panel is securely attached, and then close the front panel.

CAUTION

• Do not splash or direct water to the body of the unit when cleaning it as this may cause a short circuit.
• Never use hot water (above 40°C), benzine, gasoline, acid, thinner, or a brush, because they will damage the plastic surface and the coating.

Maintenance at the Beginning of the Long Off Period

• Run the unit by setting the operation mode to 9 (FAN) and the fan speed to Super High for about half a day on a fine day, and dry the whole of the unit.
• Switch off the power plug or turn off the circuit breaker.

Information

Capabilities

• Heating Capability
  • 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 temperature gets lower, the heating capability will also lower. In such a situation, the inverter works to increase compressor rpm to keep the unit’s heating capability from decreasing. If the unit’s heating performance is still unsatisfactory, other heating appliances should be used to augment this unit’s performance.
  • The air conditioner is designed to heat an entire room so that it may take some time before you feel warm. Timer operation is recommended for effective preheating ahead of the desired time.

Cooling and Dehumidifying Capabilities
If the heat present in a room exceeds the unit’s cooling capacity (for example, if there are many people in the room or other heating appliances are used), the preset room temperature may not be reached.

Refrigerant Information

• For the refrigerant charge information, please refer to the outdoor unit installation manual or specification label.

Regular Inspection
PLEASE CHECK THE FOLLOWING POINTS EVERY EITHER HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT SHOULD YOU NEED ANY HELP.

After Sales Service and Warranty
When Asking for Service, Check the Following Points.

If the remote controller is not transmitting a signal. remote controller display is blank or the LCD restarts on pressing any key and there is no response from the air conditioner unit.| Do the batteries need replacement?

Is the polarity of the inserted batteries correct?

When it does not operate.| Is the fuse all right?

Is the voltage extremely high or low? Is the circuit breaker “ON”?

Is the power plug inserted? Do you have any power cut?

When it does not cool well. When it does not heat well.| Is the air filter blocked with dust? Is the set temperature suitable?

Have horizontal air deflectors been adjusted to their correct positions according to the operation mode selected?

Are the air inlets or air outlets of indoor and outdoor units blocked?

Is the fan speed “LOW” or “SILENT”?

FrostWash Operation

FrostWash Operation does not start| Is the total operation time of the air conditioner beyond the default setting when the air- conditioner is operated for about 30 minutes and stopped?
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The FrostWash must meet the following conditions.| FrostWash Operation does not start| Is the total operation time of the air conditioner beyond the default setting when the air-conditioner is operated for about 30 minutes and stopped?
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The FrostWash must meet the following conditions.
Does not change to non-automatic “FrostWash”?
Does it happen after ” time off “?

Automatic “FrostWash” interval becomes longer.

Within 60 minutes after the end of “FrostWash”, “FrostWash” is not operated for product protection.
The noise   occurred

during the  FrostWash operation

| It is the sound that the internal machine is inflated and contracted by the temperature change and the fin of the heat exchanger is frozen and thawed.
(Clean Function Lamp) blinks| Repeat for 1 second on and 1 second off for 10 seconds

Because “FrostWash” can not work when operating the “FrostWash” with a remote controller.

· The air conditioner is operating

· Outside air temperature, room temperature, and room humidity are not suitable for “FrostWash”

· It has not been over 60 minutes since the end of “FrostWash”

Repeat for 4 seconds on and 1 second off for 15 seconds Because FrostWash has not been done for a long time.

Operate the remote controller to operate “FrostWash”.

Does not change to non-automatic “FrostWash”?
Does it happen after ” time off “?

Automatic “FrostWash” interval becomes longer.

Within 60 minutes after the end of “FrostWash”, “FrostWash” is not operated for product protection.
The noise   occurred

during the  FrostWash operation

| It is the sound that the internal machine is inflated and contracted by the temperature change and the fin of the heat exchanger is frozen and thawed.
  (Clean Function Lamp) blinks| Repeat for 1 second on and 1 second off for 10 seconds

Because “FrostWash” can not work when operating the “FrostWash” with a remote controller.

· The air conditioner is operating

· Outside air temperature, room temperature, and room humidity are not suitable for “FrostWash”

· It has not been over 60 minutes since the end of “FrostWash”

Repeat for 4 seconds on and 1 second off for 15 seconds Because FrostWash has not been done for a long time.

Operate the remote controller to operate “FrostWash”.

*Multi connection only available for manual “FrostWash”.

Mold guard function 2.0 Operation (For single inverter only)

During Mold guard function 2.0| (Clean Function Lamp) on the indoor unit lights up during Mold guard function 2.0 operation. If the Mold Guard Function 2.0 operation stops at the middle point, the Clean Function Lamp indicator will turn off.
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Mold guard function 2.0 operation does not start| If the air conditioner operation is stopped after the heating operation, Mold Guard function 2.0 will not operate. If the air conditioner has operated in cooling and drying mode, including auto mode, for less than 10 minutes, the Mold Guard function 2.0 operation will not start even if the air conditioner is in off mode. If the operation of the air conditioner is stopped by the OFF Timer, the Mold Guard function 2.0 will not operate. If the ON Timer is set and on time is within about 2 hours, the Mold guard function 2.0 will not operate.
Notes| The horizontal deflector remains open. Room temperature or humidity may rise. Depending on the situation, Mold Guard function 2.0 will operate with Fan Mode. When there is a window near the indoor unit, the water might condense on the window during Mold Guard function 2.0. If necessary, to cancel Mold guard function 2.0. In the FrostWash operation, the water inside the indoor unit evaporates, depending on the room conditions, and may emitted as steam. But this is not a malfunction. If necessary, to cancel Mold guard function 2.0.

Mold Guard Operation (For Multi-model will operate as Auto Clean operation)

During Mold Guard| (Clean Function Lamp) on the indoor unit lights up during the Mold Guard operation. If the Mold Guard operatstopsstop at the middle point, the Clean Function Lamp indicator will turn off .
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Mold Guard operation does not start| If the air conditioner operation is stopped after the heating operation, Mold Guard will not operate.

If the air conditioner has operated in cooling and drying mode, including auto mode, for less than 10 minutes, the Mold Guard operation will not start even if the air conditioner is in off mode. If the operation of the air conditioner is stopped by the y OFF Timer, the Mold Guard will not operate.

If the ON Timer is set and on time is within about 2 hours, the Mold Guard will not operate.

Notes| The horizontal deflector remains open. Room temperature or humidity may rise.

When there is a window near the indoor unit, the water might condense on the window during Mold Guard. If necessary, to cancel Mold Guard.

In theFrostWash operation, the water inside the indoor unit evaporates, depending on the room conditions, may emitted as steam. But this is not a malfunction. If necessary, to cancel Mold Guard.

• The following phenomena do not indicate unit failure.
  During heating, the operation indicator blinks and the air blow stops|

The unit is preparing to blow warm air. Please wait.