USER MANUAL PORTABLE AIR CONDITIONER

Description of the appliance (see page 3 - A)
A1 air outlet flap
A2 control panel
A3 handles
A4 castors
A5 air filter
A6 air intake grille
A7 air exhaust hose housing
A8 air intake grille
A9 power cable
A10 drainage hose with cap
A11 CST remote control compartment
Description of the accessories (see page 3 - B)
B1 adapter for window bracket
B2 air exhaust hose
B3 hose adaptor
B4 additional window bracket
B5 window bracket with wing nut
B6 window bracket cap
B7 CST (Cool Surround Tecnology) remote control
B8 end of season accessories bag (*not on all models)
B9 end of season dust cover (*not on all models)
B10 stripping foam

D1 ON/STAND-BY (on/off) button
D2 MODE button
D3 Decrease button
D4 Increase button
D5 Swing button (flap swing)
D6 ARCTIC WHISPER EXTREME button
D7 Air flow button
D8 Timer button
D9 ECO REAL FEEL button
D10 Indication LED
For optimal results see the figures below for the suggested minum distances.

DOUBLE-HUNG WINDOW






SLIDING WINDOWS

DESCRIPTION OF THE CONTROL PANEL (C)
C1. ON/STAND-BY (on/off) key
C2. Function selection key MODE (air conditioning, dehumidifying, fan)
C3. Increase key
C4. Decrease key
C5. Fan speed selection key (MIN/MED/MAX/AUTO)
C6. Air conditioning symbol
C7. Dehumidifying symbol
C8. Fan symbol
C9. ECO REAL FEEL symbol/status indicator
C10.Swing symbol
C11.Fan speed indicator
C12.ARCTIC WHISPER EXTREME symbol
C13.Alarm symbol
C14.Set temperature values, programmed on/off timer
C15.Timer symbol
C16.Timer indicator
C17.Selected temperature scale indicator
TURNING THE APPLIANCE ON AND OFF
Insert the plug in the socket. Two dashes appear on the display indicating that the appliance is in stand-by.

Touch the
(C1) key to turn ON the appliance.
The flap A1 will open after few seconds. When the appliance comes ON the last function set before it was shut off is activated.
Please note: If start-up is not continued, after a few minutes the display light dims in order to reduce energy consumption. To turn the appliance off, touch the
key and then pull the plug.
Please note: Never turn off the air conditioner by simply pulling the plug. Touch the
key in order to put your air conditioner in stand-by and wait a few minutes before pulling the plug. In this manner, the appliance can perform the operating status checks.
MODES SELECTION
![]() | To select the desired operating mode, touch repeatedly the MODE key (C2) until the desired function is selected. |
AIR CONDITIONING MODE
![]() | This is ideal for hot and humid weather when the room needs to be cooled. This function also helps dehumidify the air. To correctly set this mode:
|
(C5) key.The speeds available are:
![]() | Minimum speed: when maximum silent operation is desired. |
![]() | Medium speed: when the noise level needs to be low but with a good comfort level. |
![]() | Maximum speed: to reach the desired temperature as soon as possible. |
![]() | Auto: the appliance automatically chooses the best fan speed based on the temperature select ed and the environmental conditions. |
DEHUMIDIFYING MODE
![]() | This is ideal for reducing humidity in the room (spring and autumn, damp rooms, rainy periods, etc). For this type of use, the appliance must be set up as for air conditioning mode. That is, the air exhaust hose (B2) must be fitted to the appliance to allow the humidity to be discharged outside. |
To correctly set this mode:
symbol appears
FAN MODE
![]() | When using this mode, the air exhaust hose (B2) does not need to be attached to the appliance. To correctly set this mode:
|
The air flows available are:
![]() | Minimum air flow: when most silent operation is desired. |
![]() | Medium air flow: when the noise level needs to be low but with a good comfort level. |
![]() | Maximum air flow: for maximum performance. |
SELECT THE TEMPERATURE SCALE
![]() | The temperature can be displayed in °C or °F. To change the temperature unit of measure touch both the increase (C3) or decrease (C4) keys for about 10 sec. |
CLEANING THE APPLIANCE
You should clean the appliance with a slightly damp cloth then dry with a dry cloth. For safety reasons, never wash the air conditioner with water.
Attention! Never use petrol, alcohol or solvents to clean the appliance. Never spray insecticide liquids or similar.
CLEANING THE AIR FILTER
If the filter is dirty, air circulation is compromised and the efficiency of the appliance decreases. It is therefore good practice to clean the filter at regular intervals. The frequency depends on the duration and conditions of operation. If the unit is used constantly or systematically, you are recommended to clean the filter once a week. The filter is housed in the intake grille. To clean the filter, extract as shown in fig. 9.

Use a vacuum cleaner to remove the dust collected on the filter. If it is very dirty, immerse in warm water and rinse a number of times. The water should never be hotter than 104°F. After washing the filter, allow it to dry completely before repositioning it. The filter helps capture dust and pollen.
START OF SEASON CHECKS
Make sure the power cable and plug are undamaged and the electrical outlet is in working order.
Follow the installation instructions precisely
END OF SEASON OPERATIONS
To drain all water from the circuit, remove the external cap by unscrewing it in the counter clockwise direction and allow the water to drain out into a basin (fig. 10).

When the appliance is empty, replace the caps. Clean the filter and dry thoroughly before putting back. In order to properly storage the appliance at the end of the season, we suggest you cover it with the supplied end of season dust cover (B9) and you put the accessories in the relevant end of season accessories bag (B8).
*dust cover and accessories bag only included with some models.
| PROBLEM | CAUSE | SOLUTION |
|---|---|---|
| The air conditioner does not come ON | it is not plugged into the outlet | plug into the outlet |
| there is no power | wait for the current to return | |
| the internal safety device has tripped | call the Service Center | |
| The air conditioner works for a short time only | there are bends or kinks in the air exhaust hose | position the air hose correctly, keeping it as short and free of curves as possible to avoid bottlenecks |
| something is preventing the air from being discharged | check and remove any obstacles obstructing air discharge | |
| The air conditioner works, but does not cool the room | windows, doors and/or curtains open | close doors, windows and curtains, bearing in mind the “TIPS FOR CORRECT USE” given above |
| there are heat sources in the room (oven, hairdryer, etc | minimize heat sources impact by setting on low or unplugging unnecessary sources | |
| the air exhaust hose is detached from the appliance | fit the air exhaust hose in the housing at the back of the appliance (fig. 6). | |
| filter clogged | clean or replace the filter as described above | |
| During operation, there is an unpleasant smell in the room | filter clogged or dirty | clean the filter as described above |
| The air conditioner does not operate for about three minutes after restarting it | an internal safety device prevents the appliance from being restarted until three minutes have elapsed since it was last turned off wait. This delay is part of normal operation. | wait. This delay is part of normal operation. |
The scripts Lt/Ht/Lh/PF/HL/Ei and the symbol appear on display. | the appliance has a self diagnosis system to identify a number of malfunctions. | see the SELF-DIAGNOSIS chapter |
Reference file: Delonghi PACEX390LVYN-6A BK Portable Air Conditioner
Series: EX CST Series
Additionally, the document applies to other Delonghi models: PACEX390LVYN