Q: How to drain the water from the DAITSU APD12HR air conditioner?

Draining in dehumidification mode: Turn off the unit and remove the drain plug located at the back of the unit. Install the drain connector (universal female adapter 5/8") with a hose. Place the end of the hose directly above your drain or a collection tray. Let the water drain completely, then reinstall the plug before reconnecting the unit. Manual draining of the tray: When the error code P1 appears (tray full), carefully move the unit to the drainage area, adjust the bottom plug, and let the water drain out. Important tips: Ensure that the hose has no leaks and has no bends preventing drainage. Always direct the hose downwards - never direct it upwards. In cooling and heating modes, the unit also produces condensation that requires continuous drainage.

Q: What does error code E9 mean on the DAITSU ARTIC DS 9KDP air conditioner?

The E9 error on your DAITSU ARTIC DS 9KDP air conditioner generally indicates a communication problem between the indoor unit and the outdoor unit, or a failure of the temperature sensor. Here are the steps to follow to resolve this issue: Turn off the device - Disconnect the power supply to the air conditioner for 10 to 15 seconds, then turn it back on. This often resets the system and clears temporary error codes. Check the connections - Ensure that all communication cables between the indoor and outdoor units are properly connected and not damaged. Clean the filters - A dirty filter can affect temperature readings and trigger the E9 error. Refer to the manual for access to the filters. Check the space around the unit - Ensure that the outdoor unit has sufficient airflow and is not obstructed. If the error persists after these checks, the problem may be related to a faulty sensor or a failure of the electronic board. In this case, we recommend contacting DAITSU customer service with the error code E9 for expert diagnosis.

Q: Why does the power button on my DAITSU APD12HR air conditioner stay red and the unit does not start?

If the power (ON/OFF) button on the front panel stays red and your DAITSU APD12HR air conditioner does not start, this generally indicates a power supply issue rather than a malfunction of the unit. Here are the checks to perform in order: 1. Check the main power supply Ensure that the wall outlet where the air conditioner is plugged in is active (check that another device works on this outlet) Check that the circuit breaker or residual current device in your electrical panel has not tripped to the OFF position 2. Unplug and replug the unit Completely unplug the air conditioner from its outlet Wait at least 3 minutes (as indicated in the manual for a stop/restart) Plug it back in and wait 2-3 minutes for the LED screen and indicator to fully initialize Then press the POWER button 3. Check the connection Plug the air conditioner directly into a wall outlet , never into an extension cord or adapter Check that the power cable is not damaged and that the ground socket makes good contact 4. Important to know According to the manual for the APD12HR model, you should never unplug the outlet to stop the unit - always use the POWER button. If the unit has experienced a power cut, it will restart automatically and resume its previous function once power is restored. If after these steps the indicator remains red and nothing happens, the problem is likely due to an electrical fault (defective outlet, damaged cable, or internal malfunction of the unit). In this case, we recommend contacting an electrician or the DAITSU customer service for a diagnosis.

Q: How to switch from Fahrenheit to Celsius on the DAITSU APD12HR air conditioner?

To switch between temperature units Celsius (°C) and Fahrenheit (°F) on your DAITSU APD12HR air conditioner, follow these steps: Press and hold the UP (+) and DOWN (-) buttons on the control panel simultaneously for 3 seconds The LED display will automatically switch between °C and °F This conversion works for all operating modes: cooling, heating, dehumidification, and ventilation. The temperature will then be displayed in the unit you have selected. Available temperature ranges: the air conditioner allows you to set the temperature from 17°C to 30°C (62°F to 88°F) in cooling and heating modes. In dehumidification mode, the range extends from 13°C to 35°C. Changing the unit only affects the display: the settings and indoor temperature do not change, only the measurement system switches for your comfort.

Question 1

How to drain the water from the DAITSU APD12HR air conditioner?

Accepted Answer

Draining in dehumidification mode:

Turn off the unit and remove the drain plug located at the back of the unit.
Install the drain connector (universal female adapter 5/8") with a hose.
Place the end of the hose directly above your drain or a collection tray.
Let the water drain completely, then reinstall the plug before reconnecting the unit.

Manual draining of the tray:

When the error code P1 appears (tray full), carefully move the unit to the drainage area, adjust the bottom plug, and let the water drain out.

Important tips:

Ensure that the hose has no leaks and has no bends preventing drainage.
Always direct the hose downwards - never direct it upwards.
In cooling and heating modes, the unit also produces condensation that requires continuous drainage.

Question 2

What to do if the buttons on the DAITSU APD12HR air conditioner are unresponsive and there is no remote control?

Accepted Answer

If the buttons on the front panel of the DAITSU APD12HR air conditioner are unresponsive, you can still control the unit without a remote. Here are the steps to follow:

Reset Procedure

Unplug the unit from the power outlet for 5-10 minutes
Plug it back in and wait 2-3 minutes for the system to fully restart
Test the buttons (Power, Mode, +/-, Fan Speed, Timer, Swing, Sleep/Eco) - they should respond

Important Points

Only use your fingers to press the buttons, never hard or sharp objects that could damage them
Check that the LED screen on the front panel lights up - this is a sign that the unit is receiving power
The DAITSU APD12HR air conditioner has a full control panel: you have access to all settings (on/off, COOL/HEAT/DRY/FAN/AUTO modes, temperature 17-30°C, fan speed, timer 0-24h) directly without a remote

If the problem persists

If after resetting the buttons still do not respond or if you see an error code displayed (E1, E2, E3, E4, or P1), this indicates an internal malfunction (faulty sensor or full condensation tank). Contact a certified technician - forcing the buttons could worsen the problem.

Question 3

What does error code E9 mean on the DAITSU ARTIC DS 9KDP air conditioner?

Accepted Answer

The E9 error on your DAITSU ARTIC DS 9KDP air conditioner generally indicates a communication problem between the indoor unit and the outdoor unit, or a failure of the temperature sensor.

Here are the steps to follow to resolve this issue:

Turn off the device - Disconnect the power supply to the air conditioner for 10 to 15 seconds, then turn it back on. This often resets the system and clears temporary error codes.
Check the connections - Ensure that all communication cables between the indoor and outdoor units are properly connected and not damaged.
Clean the filters - A dirty filter can affect temperature readings and trigger the E9 error. Refer to the manual for access to the filters.
Check the space around the unit - Ensure that the outdoor unit has sufficient airflow and is not obstructed.

If the error persists after these checks, the problem may be related to a faulty sensor or a failure of the electronic board. In this case, we recommend contacting DAITSU customer service with the error code E9 for expert diagnosis.

Question 4

What do the symbols and indicators of the DAITSU ASD 18U air conditioner mean?

Accepted Answer

Safety Symbols

The DAITSU ASD 18U manual uses two main symbols for safety warnings:

Forbidden Action Symbol (o/) - Indicates a prohibited action (Never do this)
Mandatory Action Symbol (o.) - Indicates a mandatory action (Always do this)

The mentions WARNING alert to the possibility of death or serious injury, while PRECAUTIONS signal risks of injury or damage.

Indicators and Display Panel

Your air conditioner has several indicator lights:

Operation Indicator - Blinks once per second when powered on, then stays on continuously during operation
TIMER Indicator - Lights up when the timer is activated
PRE-DEF Indicator - Indicates automatic defrosting (reversible models only)
AUTO Indicator - Blinks in automatic mode
ECON Indicator - Lights up in economy mode

Remote Control Displays and Indicators

The transmission light turns on when sending signals. The LCD screen displays:

The operating mode (heating, cooling, etc.)
The set temperature (17-30 degrees Celsius)
The time and timer
The fan speed (Auto, Low, Med, High)

These symbols and indicators allow you to check the status and settings of your air conditioner at a glance.

Question 5

Why is the DAITSU ASD 18U air conditioner not cooling?

Accepted Answer

If your DAITSU ASD 18U air conditioner is not producing cold air, here are the checks to perform in order:

Check the selected mode - Make sure you are in "Cooling" mode via the LCD remote control, and not in Fan, Dry, or Auto mode depending on the season.
Check the programmed temperature - The thermostat must be set between 17°C and 30°C. If the ambient temperature is already below the requested threshold, the unit will not cool.
Clean the air filter - A dirty filter significantly reduces cooling efficiency. According to the manual, the washable filter should be cleaned every two weeks. Remove it and rinse it with warm water.
Check the power supply - Ensure that the unit is plugged into a 220-240V ~ 50Hz outlet and that the outlet is functioning properly.
Wait after restarting - If you have just restarted the unit (especially after a heating cycle), wait about 3 minutes before the compressor starts again.
Check that the unit starts - Listen for the compressor to start and check if air is coming out of the outlet. If nothing happens, refer to the "Unit not starting" section of the troubleshooting guide provided in the manual.

If after these checks the air conditioner still does not produce cold air, a fault in the compressor or refrigeration circuit may be the cause and would require technical intervention.

Question 6

Why does the power button on my DAITSU APD12HR air conditioner stay red and the unit does not start?

Accepted Answer

If the power (ON/OFF) button on the front panel stays red and your DAITSU APD12HR air conditioner does not start, this generally indicates a power supply issue rather than a malfunction of the unit. Here are the checks to perform in order:

1. Check the main power supply

Ensure that the wall outlet where the air conditioner is plugged in is active (check that another device works on this outlet)
Check that the circuit breaker or residual current device in your electrical panel has not tripped to the OFF position

2. Unplug and replug the unit

Completely unplug the air conditioner from its outlet
Wait at least 3 minutes (as indicated in the manual for a stop/restart)
Plug it back in and wait 2-3 minutes for the LED screen and indicator to fully initialize
Then press the POWER button

3. Check the connection

Plug the air conditioner directly into a wall outlet, never into an extension cord or adapter
Check that the power cable is not damaged and that the ground socket makes good contact

4. Important to know

According to the manual for the APD12HR model, you should never unplug the outlet to stop the unit - always use the POWER button. If the unit has experienced a power cut, it will restart automatically and resume its previous function once power is restored.

If after these steps the indicator remains red and nothing happens, the problem is likely due to an electrical fault (defective outlet, damaged cable, or internal malfunction of the unit). In this case, we recommend contacting an electrician or the DAITSU customer service for a diagnosis.

Question 7

How to switch from Fahrenheit to Celsius on the DAITSU APD12HR air conditioner?

Accepted Answer

To switch between temperature units Celsius (°C) and Fahrenheit (°F) on your DAITSU APD12HR air conditioner, follow these steps:

Press and hold the UP (+) and DOWN (-) buttons on the control panel simultaneously for 3 seconds
The LED display will automatically switch between °C and °F

This conversion works for all operating modes: cooling, heating, dehumidification, and ventilation. The temperature will then be displayed in the unit you have selected.

Available temperature ranges: the air conditioner allows you to set the temperature from 17°C to 30°C (62°F to 88°F) in cooling and heating modes. In dehumidification mode, the range extends from 13°C to 35°C. Changing the unit only affects the display: the settings and indoor temperature do not change, only the measurement system switches for your comfort.

Question 8

What does error code E3 mean on my DAITSU ADDH 12 dehumidifier?

Accepted Answer

The E3 code is not documented in the official DAITSU ADDH 12 manual. However, on this model, display issues or malfunctions are generally related to water management.

Priority checks to perform:

Full tank: The fill indicator lights up when the tank reaches approximately 3.6 L (out of a total capacity of 4 L). Empty the tank and reinstall it correctly.
Tank installation: Ensure that the tank is properly clicked into place. Improper installation can trigger alerts.
Continuous drainage: If you are using the continuous drainage system (14 mm hose), check that the hose is not blocked and that the sealing gasket of the water trap is correctly positioned (the manual emphasizes that this gasket must be in place before operation).
Restart: Turn off the device, wait 30 seconds, then turn it back on.

If the problem persists after these checks, the E3 code may indicate a sensor or electronic malfunction that requires professional technical intervention. Contact DAITSU customer service with model number ADDH 12 for a complete diagnosis.

Question 9

What is the icon representing the heating mode on the remote control of the DAITSU APD12HR air conditioner?

Accepted Answer

On the remote control of your DAITSU APD12HR air conditioner, the icon that indicates the heating mode is usually represented by a symbol evoking heat:

A sun, symbolizing warmth and high temperature.
Or a flame, which is also a common symbol for heating.

When you select this mode, the unit operates to heat the room. If you do not clearly see this icon, check the mode buttons on the remote control, often marked with symbols, and look for the one that matches these descriptions.

Question 10

How to activate the heating mode on the DAITSU APD12HR air conditioner?

Accepted Answer

To activate the heating mode on your Daitsu APD12HR portable air conditioner, which operates as a heat pump, follow these simple steps:

Turn on the device by pressing the POWER button located on the control panel or on the remote control.
Press the MODE button repeatedly until the HEAT indicator light comes on the display. With each press, you cycle through the modes in the following order: AUTO, COOL, DRY, FAN, and HEAT.
Set the desired temperature using the ADJUST buttons “+” or “-”. You can select a temperature between 17°C and 30°C (or 62°F to 88°F). In heating mode, the device will heat the room to reach the temperature you have set.
Adjust the fan speed (optional) by pressing the FAN SPEED button if you wish to change the airflow power. Note: on some models, the fan speed cannot be adjusted in heating mode.

The Daitsu APD12HR air conditioner features intelligent energy management: when the ambient temperature is lower than the one you have set, the heat pump automatically starts. The heating mode is particularly effective for rooms up to 30 m² and maintains optimal comfort while adhering to the device's energy class A.

User manual DAITSU : user manuals and guides in PDF

Models DAITSU most viewed

Browse manuals DAITSU by appliance type

Recent questions about devices DAITSU