HITACHI RAK-VJ15QHAE Air Home 600 Instruction Manual

HITACHI RAK-VJ15QHAE Air Home 600

Specifications

• Model: VJ SERIES
• Available Models: RAK-VJ15QHAE, RAK-VJ18RHAE, RAK-VJ25RHAE, RAK-VJ35RHAE, RAK-VJ42RHAE, RAK-VJ50RHAE
• RC-AGS1EA0E
• Dimensions (WxHxD): 780mm x 280mm x 227mm

Product Information

Safety Precaution
Please read the Safety Precaution carefully before operating the unit to ensure correct usage of the unit. This appliance is filled with R32. Make sure to connect the earth line.

Precautions During Installation

Warning: Do not place the earth line near water or gas pipes, lightning- conductor, or the earth line of the telephone. Improper installation of the earth line may cause electric shock or fire.

Precautions During Shifting or Maintenance

Warning: Before shifting or maintenance, ensure to disconnect the unit and turn off the circuit breaker. Contact your agent if there is a fault, short circuit, or fire may occur.

Precautions During Operation

Warning: Do not touch the unit during operation. Turn off the circuit breaker before cleaning to prevent any danger from the high-speed fan inside the unit.

Product Usage Instructions

Operation Range
Operation mode: Single, Multi
Outdoor temperature: Refer to the manual for specific temperature ranges for each mode.

Names and Functions of Each Part
Indoor Unit:

• Air filter: To prevent dust from entering the indoor unit.
• Front panel.
• Ioniser.
• Indoor unit indicators.
• Eco Sensor.

Model Name and Dimensions
Model: RAK-VJ15QHAE, RAK-VJ18RHAE, RAK-VJ25RHAE, RAK-VJ35RHAE, RAK- VJ42RHAE, RAK-VJ50RHAE
Dimensions: Width: 780mm, Height: 280mm, Depth: 227mm

Indoor Unit Indications

• Operation Lamp (Yellow): Lights during operation.
• Timer Lamp (Orange): Lights when the timer is working.
• Wi-Fi Lamp (Blue): Indicates different functions during operation.
• Clean Function Lamp (Green): Used for specific functions like FrostWash and Mold Guard Filter Sign.

FAQ

1. Q: What should I do if the unit is not be operated for a long period?
   A: Turn off the circuit breaker to save power consumption.

SAFETY PRECAUTION

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 which, 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.)

Make sure to connect earth line.
Indicates the instructions that must be followed.
This sign in the figure indicates prohibition.

• Please keep this manual after reading.

PRECAUTIONS DURING INSTALLATION
WARNING

• Do not reconstruct the unit. Water leakage, fault, short circuit or fire may occur if you reconstruct the unit by yourself.

• Please ask your sales agent or qualified technician for the installation of your unit. Water leakage, short circuit or fire may occur if you install the unit by yourself.

• Please use earth line.
  Do not place the earth line near water or gas pipes, lightning-conductor, or the earth line of telephone. Improper installation of earth line may cause electric shock or fire.

• Be sure to use the specifi ed piping set for R32. . Otherwise, this may result in broken copper pipes or faults.

• Do not use refrigerant other than the one indicated on the outdoor unit (R32) when installing, moving or repairing.
  Using other refrigerants may cause trouble or damage to the unit, and personal injury.

CAUTION

• A circuit breaker should be installed depending on the mounting site of the unit. Without a circuit breaker, the danger of electric shock exists.
• Do not install the unit near a location where there is flammable gas. The outdoor unit may catch fire if flammable gas leaks around it.
• Please ensure smooth fl ow of water when installing the drain hose.
• Make sure that a single phase 2 2 0 V -2 4 0 V power source is used.
  The use of other power sources may cause electrical components to overheat and lead to fi re.

PRECAUTIONS DURING SHIFTING OR MAINTENANCE
WARNING

• Should abnormal situation arise (like burning smell), please stop operating the unit and turn off the circuit breaker. Contact your agent. Fault, short circuit or fire may occur if you continue to operate the unit under abnormal situation.
• Please contact your agent for maintenance. Improper self maintenance may cause electric shock and fi re.
• Please contact your agent if you need to remove and reinstall the unit. Electric shock or fi re may occur if you remove and reinstall the unit yourself improperly.

PRECAUTIONS DURING OPERATION

•  Avoid an extended period of direct airflow for your health.
• Do not put objects like thin rods into the panel of blower and suction side because the high-speed fan inside may cause danger.
• Do not use any conductor as fuse wire, this could cause fatal accident.
• During thunder storm, disconnect the plug top and turn off the circuit breaker.
• Spray cans and other combustibles should not be located within a meter of the air outlets of both indoor and outdoor units.
  As a spray can’s internal pressure can be increased by hot air, a rupture may result.

PRECAUTIONS DURING OPERATION

• This room air conditioner is only for residential usage.
  Do not use for preservation of foods, animals, plants, precision machines, art, medicine or such.

• The product shall be operated under the manufacturer specif ication and not for any other intended use.

• 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.

• Please ensure that outdoor mounting frame is always stable, f irm and without efect. If not, the outdoor unit may collapse and cause danger.

• Do not wash the unit with water or place a water container such as a vase on the indoor unit.
  Electrical leakage could be present and cause electric shock.

• Do not place plants or animals directly under the airf low as it is bad for the plants or animals.

• Be sure to stop the operation by using the remote controller and turn off the circuit breaker during cleaning, the high-speed fan inside the unit may cause danger.

• Be sure to stop the operation by using the remote controller and turn off the circuit breaker during cleaning, the high-speed fan inside the unit may cause danger.

• Do not climb on the outdoor unit or put objects on it.

• When operating the unit with the door and windows opened, (the room humidity is always above 80%) and with the air def lector facing down or moving automatically for a long period of time, water will condense on the air deflector and drips down occasionally. This will wet your furniture. Therefore, do not operate under such condition for a long time.

• If the amount of heat in the room is above the cooling or heating capability of the unit (for example: more people entering the room, using heating equipments and etc.), the preset room temperature cannot be achieved.

• Indoor unit cleaning must be performed by authorized personnel only. Consult your sales agent.
  Using a commercially available detergent or similar can damage the plastic parts or clog the drain pipe, causing water to drip with potential electric shock hazard.

• Do not spray pesticides, flammable sprays, deodorants, antibacterial agents, etc. on indoor units. because it may cause fire, deformation, refrigerant leakage, or water leakage.

• Do not touch the air outlet, bottom surface and aluminium f in of the outdoor unit. You may get hurt.

• Do not touch the refrigerant pipe and connecting valve. Burns may result.

• This appliance is not to be used by children or persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction. Children must be supervised not to play with the appliance.

Operation Range

Names and Functions of Each Part

Indoor Unit

Model Name and Dimensions

Indoor Unit Indications

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).

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 vacuum to clean. It can be used for 1 year. When you want to renew it, please ask your sales agent.

Operate Air Conditioner with Smartphone

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

Send the operation from the smartphone to the air conditioner.
In addition, we send status from air conditioner to customer’s smartphone.

What You Should Confirm When Using the Service
Internet environment at home

• In order 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 smart phone, or contact your smart phone manufacturer.
• Make sure that you can connect to the router with 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
Search for the airCloud Go app

• For Android models: Open Google Play.
  Android is a trademark and registered trademark of Google LLC.

• For iOS models (iPhone): Open the App Store.
  iPhone is a trademark and registered trademark of Apple Inc.

Please install according to the screen

• In order to use the dedicated app, you need to read and agree to the Terms of Service.
• 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.
• 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 group administrator by default and manage other users and also set access rights for other users.
• When using with 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 Low power radio stations (radio stations that do not require a license) and amateur radio stations (radio stations that require a license) are in operation.

1. 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.
2. 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.
3. 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

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 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 do 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 airCloud Go app also.

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 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 no t 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 p erform 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 comple tely 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 .
• 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 th e set functions may be canceled.

SSID & KEY Label Paste
SSID & KEY label details of Air conditioner’s built-in airCloud Go module is pasted here for your reference. Please keep it safe for future requirements during pairing process and please write down the installation location (like living room, bed room, etc.) on the label. The AC type is “2” that 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 these 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 airCloud 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 airCloud 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 airCloud 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 pairing procedure will be required to do again to use the built-in airCloud Go module.

1. Press Mode key and ON Timer key simultaneously, pointing the remote controller towards the air conditioning unit.
2. Make sure Wi-Fi LED on Indoor unit flashes 4 times repeatedly for about 20 seconds (LED is turning off between 2 sequences of 20 seconds).
3. Restart the unit (turn power OFF during 1 minute, then turn power ON again) and check that the Wi-Fi LED is blinking 3 times.
   If Wi-Fi LED is indeed flashing 3 times, pairing mode is well activated and factory settings have well 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 not detected.
• Air conditioner is not plugged in.
• Built-in airCloud Go module and the air conditioner is not connected.

LED ON

|

• The connection between the Built-in airCloud Go module and the router is completed.
• The operation can be conducted through 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 mains 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 personal. Before cleaning, stop 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 air flow will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to clean the filter following the procedure below.

PROCEDURE

1. Open the front panel carefully and remove the filter.
2. Vacuum dust from the air filter using 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.
3. Set the filter with “FRONT” mark facing front, and slot them into the original state with putting the filter on the guide. and insert the hook to the hole.
   After attaching the filters, push the front panel at three arrow portions as shown in figure and close it.

CAUTION

• Do not wash with hot water at more than 40°C. The filter may shrink.
• Do not wash with 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 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 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.

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 th en c lose t he f ront panel.

CAUTION

• Do not splash or direct water to the body of the unit when cleaning it as this may cause 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 Beginning of Long Off Period

• Run the unit by setting the operation mode to (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, heating capability will also lower. In such a situation, the inverter work 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.

CAUTION
Do not use a stove  or any other high temperature devices in proximity to the indoor unit.

• 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.

****remote controller display is blank or LCD display restarts on pressing of any key and there is no response from air conditioner unit.|

• Do the batteries need replacement?
• Is the polarity of the inserted batteries correct?

****|

• 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?

****|

• 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
*Multi connection only available for manual “FrostWash”.

**FrostWash Operation does not start| Is the total operation time of the air conditioner beyond about 42 hours when the air- conditioner is operated for about 30 minutes and stopped?
---|---
It does not wash when outside temperature is less than about 1 degrees Celsius or more than 43 degrees Celsius.
It does not wash when the humidity in the room is about 30% or less or about 70% or more. When “FrostWash” is done by operating a remote controller, it does not wash when the room temperature is less than about 10 degrees Celsius or more than about 32 degrees Celsius.
Does not change to non -automatic “FrostWash”?
Does it happen after “sleep” and “time off”? Automatic “FrostWash” interval becomes longer. Please operate manual “FrostWash” with remote controller.
Within 60 minutes after the end of “FrostWash”, “FrostWash” is not operated for product protection.
Noise occurred during 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 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”.

Mold Guard Operation ( with heat) (For single inverter only)

Mold Guard operation does not start| If the air conditioner operation is stopped after 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 operation of the air conditioner is stop by OFF Timer or GoodSleep Timer, the Mold Guard will not operate. If ON Timer is set and on time is within about 2 hours, the Mold- Guard will not operate.
---|---
During Mold Guard|  (Clean Function Lamp) on the indoor unit lights up during Mold Guard operation. If Mold Guard operation stop at middle point, Clean Function Lamp indicator will turn off.
Notes| The horizontal deflector remain open. Room temperature or humidity may rise.
Depending on situation, Mold Guard will operate with Fan Mode. When there would be the window near indoor unit, the water might condense on the window during Mold Guard. If necessary, to cancel Mold Guard. When after FrostWash 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.

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

During Mold Guard| (Clean Function Lamp) on the indoor unit lights up during Mold Guard operation. If Mold Guard operation stop at middle point, Clean Function Lamp indicator will turn off.
---|---
Mold Guard operation does not start| If the air conditioner operation is stopped after 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 operation of the air conditioner is stop by OFF Timer, the Mold Guard will not operate. If ON Timer is set and on time is within about 2 hours, the Mold Guard will not operate.
Notes| The horizontal deflector remain open. Room temperature or humidity may rise. When there would be the window near indoor unit, the water might condense on the window during Mold Guard. If necessary, to cancel Mold Guard. When after FrostWash 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 air blow stops| <Operation start>
The unit is preparing to blow warm air. Please wait.