PANASONIC CU-XZ18AKUAC (01) PDF Document

To insert or replace the batteries in the remote control, follow these steps:

1. Pull out the back cover of the remote control.

2. Insert AAA or R03 batteries, matching the polarity.

3. Close the cover.

To set the clock on the remote control, follow these steps:

1. Press the CLOCK button, then use the arrow buttons to set the current time.

2. Press the SET button to confirm the time.

To switch between 12-hour (am/pm) and 24-hour time format, press and hold the CLOCK button for approximately 5 seconds.

Follow these steps for basic operation:

1. Press the OFF/ON button to start or stop the operation. When the unit is on, the “OFF” indicator will disappear from the remote control’s display.

2. Press the MODE button to select the desired mode. You can cycle through AUTO, HEAT, FAN, DRY, and COOL.

3. Press the TEMP UP or TEMP DOWN buttons to select the desired temperature. The selection range is 60°F – 86°F (16.0°C – 30.0°C).

To switch the temperature display between Fahrenheit (°F) and Celsius (°C), press and hold the down arrow in the timer SELECT area for approximately 10 seconds.

You can adjust the airflow direction using the AIR SWING buttons on the remote control:

Upper/Lower direction (Vertical): Press the AIR SWING button with the up/down arrows to adjust the vertical airflow. This will make the horizontal flap swing up and down. Press it again to stop it at the desired position.

Lateral direction (Horizontal): Press the AIR SWING button with the left/right arrows to adjust the horizontal airflow. This will make the vertical vanes swing left and right. Press it again to stop them at the desired position.

Do not attempt to adjust the flap by hand, as this may cause damage.

Press the FAN SPEED/QUIET button to cycle through the available settings.

FAN SPEED:

You can choose from several fan speed levels. When FAN AUTO is selected, the fan speed is adjusted automatically according to the operation mode. Selecting the lowest fan speed setting provides a low noise operation.

QUIET:

This setting reduces airflow noise for a quieter operation. For Multi Split systems, Quiet mode only activates when the button is pressed for all indoor units that are currently switched on.

To reach the desired temperature quickly, use POWERFUL mode. Press the POWERFUL button on the remote control to activate it. The unit will run at maximum power to cool or heat the room faster. This operation continues until it is cancelled. To cancel, press the POWERFUL button again or turn the unit off.

To reduce power consumption for better energy savings without sacrificing comfort, press the ECO button on the remote control. This will activate ECO mode. To cancel this operation, press the ECO button again. Please note that this operation cannot be used in FAN mode.

The modes have the following compatibilities:

• ECO and FAN SPEED/QUIET can be selected at the same time.

• POWERFUL, FAN SPEED, and QUIET cannot be selected at the same time.

Room Freeze Protection (RFP) is used in unoccupied spaces during the winter to protect equipment or appliances from being damaged by freezing temperatures. This function is not applicable if your unit is connected to a multi-split outdoor unit.

How it works: When RFP is selected by pressing the RFP button, the unit will operate in Heat mode with high fan speed for proper temperature monitoring. If the room temperature drops below the set temperature (50°F or 46°F), the compressor will start. When the temperature rises above the set temperature, the compressor stops. This cycle repeats continuously.

Disclaimer: This function requires the unit to be energized. In the event of a power failure, this mode will not function. During RFP mode, POWERFUL, QUIET, and FAN SPEED selections are disabled. To cancel RFP, press the MODE button.

You can set the timer to turn the unit on and off at 2 different preset times. Follow these steps:

1. Select TIMER ON or TIMER OFF by pressing the corresponding button (TIMER ON or TIMER OFF). Each press cycles through timer 1, timer 2, or exit setting.

2. Set the desired time using the arrow buttons in the SELECT area.

3. Confirm the setting by pressing the SET button.

To cancel a timer, press TIMER ON or TIMER OFF to select the respective timer setting (1 or 2), then press CANCEL. If a timer was cancelled due to a power failure, you can restore it by selecting the timer and pressing SET.

The timer operation follows the clock setting on the remote and will repeat daily once set.

FIREPLACE mode helps distribute heat equally from an external source (like a fireplace) throughout the room. It works by continuously blowing air from the indoor unit even when the compressor is off. This function is only available during Heat mode operation and is not applicable if connected to a multi-split outdoor unit.

To activate it, press the FIREPLACE button during Heat mode. The fan speed will adjust automatically based on the difference between the set temperature and the room temperature. To cancel, press the FIREPLACE button again. This setting is memorized even after the unit is turned off and on again.

The PANASONIC CU-XZ18AKUAC has the following operation modes:

AUTO: The POWER indicator blinks at the initial stage. The unit will automatically select an operation mode every 10 minutes (for single split) or 3 hours (for multi split) depending on the room and setting temperature.

HEAT: The POWER indicator blinks at the initial stage. It may take some time for the unit to warm up and start producing warm air.

COOL: Provides efficient comfort cooling to suit your needs.

DRY: Operates at a low fan speed for gentle cooling and dehumidification. If FAN AUTO is selected in this mode, it will operate with humidity control.

FAN: Circulates the air in the room without heating or cooling.

You may save energy when operating the unit within the recommended temperature range:

HEAT: 68°F ~ 75°F / 20.0°C ~ 24.0°C

COOL: 79°F ~ 82°F / 26.0°C ~ 28.0°C

When power is resumed after a power failure, the Auto Restart Control feature will automatically restart the operation with the last used operation mode and airflow direction. This control is not applicable when the TIMER is set.

Use the air conditioner in the temperature range indicated in the table below. DBT stands for Dry bulb temperature and WBT stands for Wet bulb temperature.

The recommended Time Delay Circuit Breaker for the CS-Z18AKUAW / CU-XZ18AKUAC model combination is 20 Amps, with a rated voltage of 208/230V. Refer to the table for other models.

Cleaning should be done at regular intervals to ensure optimal performance. A dirty unit may cause a malfunction and display a “H 99” error code. Before cleaning, always observe the following:

• Switch off the power at the circuit breaker.

• Do not touch the aluminum fin, as the sharp parts may cause injury.

• Do not use benzine, thinner, or scouring powder.

• Use only soap (pH 7) or a neutral household detergent.

• Do not use water hotter than 104°F / 40°C.

To clean the indoor unit surface, handle it with care to avoid scratches. Wipe the unit gently with a soft, damp cloth. The coils and fans should be cleaned periodically by an authorized dealer.

How to remove the front panel:

1. Raise the panel up.

2. While holding it up, slide the front panel to the right (A) and pull it out (B).

Wash the panel gently with water and dry it thoroughly.

How to close the front panel securely:

1. Hold the panel horizontally.

2. Match the hinges and push them in.

3. Close the panel down.

4. Press both ends and the center of the front panel to secure it.

The air filters should be cleaned once every 2 weeks.

To remove the air filter:

1. Open the front panel.

2. Lift the air filter slightly and remove it from the unit.

Cleaning the filter:

• Wash or rinse the filters gently with water to avoid damaging the surface.

• Dry the filters thoroughly in a shaded area, away from fire or direct sunlight.

• Replace any damaged filters.

To attach the air filter:

1. Insert the filter back into the unit.

2. Close the front panel.

The POWER indicator may blink for a few different reasons, which are normal:

• Before the unit is switched on: This is a preliminary step to prepare for a TIMER operation that has been set. The unit may start up to 35 minutes before the set time to achieve the desired temperature on time.

• During HEAT mode with no warm air: This indicates the unit is in defrost mode to remove frost from the outdoor unit. The flap will also be closed during this time.

This is normal behavior. When the timer has been set, the Timer setting repeats daily, and the indicator will remain on to show that a timer is active.

This may be due to a damp smell emitted by the wall, carpet, furniture, or clothing in the room. In some cases, during automatic fan speed setting, the indoor fan may stop occasionally to help remove surrounding odors.

These sounds are typically normal:

• A cracking sound can be caused by the expansion and contraction of the unit’s plastic parts due to changes in temperature.

• A water flowing sound is the sound of the refrigerant flowing inside the unit.

If the unit is not working efficiently in HEAT or COOL mode, check the following:

• Ensure the temperature is set correctly.

• Close all doors and windows to prevent outside air from entering.

• Clean or replace the air filters if they are dirty.

• Clear any obstructions at the air inlet and air outlet vents of the unit.

If the remote control is not working, or if the display is dim or the signal seems weak, check the following:

• Make sure the batteries are inserted correctly according to polarity.

• Replace the batteries if they are weak.

• Ensure the receiver on the indoor unit is not obstructed.

• Be aware that certain fluorescent lights may interfere with the signal transmitter. Consult an authorized dealer if the problem persists.

You can use the AUTO OFF/ON button on the indoor unit itself:

1. Raise the front panel to access the button.

2. Press the button once to use in AUTO mode.

3. To use in forced COOL mode, press and hold the button until you hear 1 beep, then release.

4. To use in forced HEAT mode, press and hold the button again until you hear 3 beeps, then release.

5. Press the button again to turn the unit off.

To dim or restore the brightness of the indicator lights on the indoor unit, press and hold the up arrow button in the timer SELECT area on the remote for 5 seconds.

Before using the unit after an extended period of non-use, perform a seasonal inspection:

• Check the batteries in the remote control and replace if necessary.

• Check that there is no obstruction around the air inlets and outlet vents of both the indoor and outdoor units.

• Use the AUTO OFF/ON button on the indoor unit to select COOL or HEAT mode. After 15 minutes of operation, it is normal to have the following temperature difference between the air inlet and outlet vents:

– COOL: ≥ 14.4°F / 8°C

– HEAT: ≥ 25.2°F / 14°C

If the unit will not be used for an extended period, follow these steps:

1. Activate HEAT mode for 2-3 hours to thoroughly remove any moisture left in the internal parts. This helps prevent mold growth.

2. Turn off the power supply at the circuit breaker and unplug the unit.

3. Remove the batteries from the remote control.

You should switch off the power at the circuit breaker and consult an authorized dealer if any of the following conditions occur:

• Abnormal noise during operation.

• Water or foreign particles have entered the remote control.

• Water leaks from the indoor unit.

• The circuit breaker switches off frequently.

• The power cord becomes unnaturally warm.

• Switches or buttons are not functioning properly.

If the unit stops and the TIMER indicator blinks, you can retrieve the error code using the remote control:

1. Press and hold the CHECK button in the timer area for 5 seconds.

2. Press the up or down arrow buttons in the timer area until you hear a beep sound, then write down the error code displayed.

3. Press and hold the CHECK button for 5 seconds to quit checking.

4. Turn the unit off and inform an authorized dealer of the error code.

For certain errors, you may be able to restart the unit for limited operation if there are 4 beeps when operation starts.

The following table lists the diagnostic display codes and their corresponding meanings. Note that some error codes may not be applicable to your model.