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Safety measures to follow during the installation process of the unit.
Safety guidelines for moving or maintaining the air conditioner unit.
Important safety instructions to observe while the air conditioner is in use.
Details and functions of the indoor unit components.
Details and functions of the outdoor unit components.
Table listing models with their width, height, and depth specifications.
Indicator lamp that lights up during operation of the unit.
Indicator lamp that lights up when the timer function is active.
Lamp indicating it's time to clean the air filter, usually after 200 hours of operation.
Visual representation of the front panel's opening condition and related instructions.
Switch used to start/stop the unit when the remote controller is not functioning.
Explanation of the remote control's functions, buttons, and signal range.
Important considerations for using the remote controller safely and effectively.
How to select the desired fan speed mode (AUTO, HI, MED, LOW) for cooling operation.
How to adjust the desired room temperature for cooling operation.
Instruction on how to stop the cooling operation using the STOP button.
How to set the desired room temperature for dehumidifying operation.
Instruction on how to stop the dehumidifying operation using the STOP button.
Explanation of how the dehumidifying function operates based on room temperature.
How to select the desired fan speed for circulation operation.
How to set the temperature control for circulation operation.
Instruction on how to stop the circulation operation using the STOP button.
Details on how the circulation function works, noting compressor inactivity.
Explanation of the sleep timer function, its operation and automatic controls.
Details on how FAN SPEED and room temperature are controlled during sleep timer operation.
Procedure to set the timer for automatically turning the unit off.
Procedure to set the timer for automatically turning the unit on.
How to adjust the horizontal air deflector for controlling airflow direction.
How to manually adjust the vertical air deflector for airflow.
Important warnings regarding battery usage and replacement in the remote controller.
Covers room temperature, ventilation, curtains, timer use, filter cleaning, and special user needs.
Covers heat sources, long-term storage, lightning, and electrical interference.
Warning about potential damage to the air purifying filter if bent.
Important notes regarding the use and maintenance of air purifying filters.
Instructions for cleaning the pre-filter, including cautions on washing and usage.
Step-by-step guide on how to detach and attach the front panel of the indoor unit.
Warning against splashing water on the unit body or using harsh chemicals for cleaning.
Instructions for running the unit and switching off power before long-term storage.
Safety on earth line, circuit breaker, cord replacement, and wire color coding.
Requirement for qualified personnel and checks for earth line, frame, and plug.
Covers troubleshooting, normal phenomena, odor control, contacting agents, and power supply notes.
Safety measures to follow during the installation process of the unit.
Safety guidelines for moving or maintaining the air conditioner unit.
Important safety instructions to observe while the air conditioner is in use.
Details and functions of the indoor unit components.
Details and functions of the outdoor unit components.
Table listing models with their width, height, and depth specifications.
Indicator lamp that lights up during operation of the unit.
Indicator lamp that lights up when the timer function is active.
Lamp indicating it's time to clean the air filter, usually after 200 hours of operation.
Visual representation of the front panel's opening condition and related instructions.
Switch used to start/stop the unit when the remote controller is not functioning.
Explanation of the remote control's functions, buttons, and signal range.
Important considerations for using the remote controller safely and effectively.
How to select the desired fan speed mode (AUTO, HI, MED, LOW) for cooling operation.
How to adjust the desired room temperature for cooling operation.
Instruction on how to stop the cooling operation using the STOP button.
How to set the desired room temperature for dehumidifying operation.
Instruction on how to stop the dehumidifying operation using the STOP button.
Explanation of how the dehumidifying function operates based on room temperature.
How to select the desired fan speed for circulation operation.
How to set the temperature control for circulation operation.
Instruction on how to stop the circulation operation using the STOP button.
Details on how the circulation function works, noting compressor inactivity.
Explanation of the sleep timer function, its operation and automatic controls.
Details on how FAN SPEED and room temperature are controlled during sleep timer operation.
Procedure to set the timer for automatically turning the unit off.
Procedure to set the timer for automatically turning the unit on.
How to adjust the horizontal air deflector for controlling airflow direction.
How to manually adjust the vertical air deflector for airflow.
Important warnings regarding battery usage and replacement in the remote controller.
Covers room temperature, ventilation, curtains, timer use, filter cleaning, and special user needs.
Covers heat sources, long-term storage, lightning, and electrical interference.
Warning about potential damage to the air purifying filter if bent.
Important notes regarding the use and maintenance of air purifying filters.
Instructions for cleaning the pre-filter, including cautions on washing and usage.
Step-by-step guide on how to detach and attach the front panel of the indoor unit.
Warning against splashing water on the unit body or using harsh chemicals for cleaning.
Instructions for running the unit and switching off power before long-term storage.
Safety on earth line, circuit breaker, cord replacement, and wire color coding.
Requirement for qualified personnel and checks for earth line, frame, and plug.
Covers troubleshooting, normal phenomena, odor control, contacting agents, and power supply notes.
This document is an instruction manual for the Hitachi RAS-S18CAK / RAC-S18CAK Split Type Air Conditioner, covering both the indoor and outdoor units. It provides essential information on safety precautions, functions, operation, and maintenance.
The Hitachi Split Type Air Conditioner is designed to provide cooling, dehumidifying, and air circulation functions for indoor environments. It consists of an indoor unit (RAS-S18CAK) and an outdoor unit (RAC-S18CAK) that work together to regulate room temperature and humidity.
Cooling Operation: The device is used for cooling when the outdoor temperature is between 21°C and 43°C. It allows users to set a desired room temperature, with a recommended range of 25°C to 28°C for optimal cooling. The fan speed can be adjusted to AUTO, HI, MED, or LOW. If indoor humidity is very high (over 80%), some dew may form on the air outlet grille of the indoor unit.
Dehumidifying Operation: This function is active when the room temperature is above 16°C. If the temperature falls below 15°C, the dehumidifying function will not work. During dehumidifying, the fan speed is automatically set to LOW. The recommended room temperature for dehumidifying is between 20°C and 26°C. If the room temperature is higher than the setting, the unit will dehumidify and reduce the temperature. If the room temperature is lower than the setting, dehumidifying will occur at a slightly lower temperature than the current room temperature, and the indoor unit will stop emitting air once the room temperature falls below the setting.
Circulation Operation: In this mode, the compressor does not run, and there is no cooling. Only the indoor fan operates to circulate air. If the setting temperature is higher than the room temperature, the indoor fan will stop running.
Sleep Timer: This feature allows the device to operate for a designated period (1, 2, 3, or 7 hours) and then automatically turn off. During sleep timer operation, the fan speed and room temperature are automatically controlled to ensure a quiet and comfortable environment. For cooling and dehumidifying, the room temperature will be controlled 2°C above the set temperature, and the fan speed will be set to LOW 1 hour after the sleep timer is activated.
ON/OFF Timer: The unit offers both ON and OFF timer functions, allowing users to schedule when the air conditioner starts or stops operation. The timer can be set in 1-hour intervals up to 12 hours.
General| Brand | Hitachi |
|---|---|
| Model | RAS-S18CAK |
| Category | Air conditioners |
| Language | English |
