DeLonghi EX CST Series User Manual (English)

Questions and Answers:

M
monicasimpsonAug 7, 2025
What to do if my DeLonghi EX CST works, but does not cool the room?
- C
  Claire Wright DDSAug 7, 2025
  If your DeLonghi Air Conditioner is running but not cooling, it could be due to several reasons. Make sure that all doors, windows, and curtains are closed. Reduce heat sources in the room, such as ovens or hairdryers, by setting them on low or unplugging them. Ensure the air exhaust hose is correctly attached to the back of the unit. Finally, check if the filter is clogged and clean or replace it.
K
Kimberly GonzalezAug 13, 2025
Why my DeLonghi Air Conditioner does not come ON?
- J
  Justin SimonAug 13, 2025
  Your DeLonghi Air Conditioner might not be turning on due to a few reasons: it may not be properly plugged into the outlet, so ensure it's plugged in. There might be a power outage, so wait for the power to return. In rare cases, an internal safety device may have tripped, in which case you should call the Service Center.
R
Ryan GeorgeAug 19, 2025
What to do if my DeLonghi Air Conditioner works for a short time only?
- C
  Christopher DicksonAug 19, 2025
  If your DeLonghi Air Conditioner operates only briefly, check the air exhaust hose for bends or kinks; position the hose correctly, keeping it short and straight to prevent bottlenecks. Also, verify that nothing is blocking the air from being discharged and remove any obstructions.
M
Maria EdwardsAug 25, 2025
Why does my DeLonghi EX CST Air Conditioner not operate for about three minutes after restarting it?
- J
  jayespinozaAug 25, 2025
  If your DeLonghi Air Conditioner doesn't start immediately after restarting, it's because an internal safety device prevents immediate restarts. Please wait; this delay is a normal part of the operation.
C
Christian MolinaAug 31, 2025
How to get rid of the unpleasant smell from my DeLonghi Air Conditioner?
- M
  Michael CampbellAug 31, 2025
  If you notice an unpleasant smell from your DeLonghi Air Conditioner during operation, the filter may be clogged or dirty. Clean the filter.

DeLonghi EX CST Series Specifications

General

Brand	DeLonghi
Model	EX CST Series
Category	Air Conditioner
Language	English

Summary

Portable Air Conditioner

Instructions for Use

General guidance for operating the portable air conditioner.

Electric Characteristics

Specifies the electrical requirements of the appliance.

Appliance Components and Accessories

Appliance Parts Identification

Diagrams and labels identifying the main parts of the air conditioner.

Included Accessories

Lists and illustrates the accessories provided with the unit.

Safety and Environmental Guidelines

Important Safeguards

Crucial safety precautions for operating the appliance.

Specific Warnings

Warnings related to refrigerant gas and compliance.

Environmental Information

Details on refrigerants and disposal considerations.

Installation Procedures

Installation Distance Requirements

Recommended minimum distances for optimal air conditioner performance.

Double-Hung Window Installation

Step-by-step guide for installing the unit in double-hung windows.

Control Panel Operation

Sliding Window Installation

Instructions for installing the unit in sliding windows.

Control Panel Overview

Identification and function of control panel buttons and indicators.

Appliance Operation Modes

Turning Appliance On and Off

Procedures for powering the air conditioner on and off.

Mode Selection

How to choose between different operating modes like cool, dehumidify, fan.

Air Conditioning Mode

Details on using the air conditioning function for cooling.

Remote Control Operation

Temperature Scale Selection

How to switch between Celsius and Fahrenheit displays.

CST Remote Control Overview

Introduction to the smart remote control and its capabilities.

Battery Installation and Replacement

Guide on inserting and replacing batteries in the remote control.

Remote Control Functions

Using the CST Remote Sensor

How the remote's sensors enhance comfort and usage.

Remote Mode Selection

Selecting operating modes using the remote control.

Remote Temperature and Airflow Control

Adjusting temperature and fan speed via the remote.

Special Features and Timer Settings

ECO Real Feel Function

Explanation of the energy-saving comfort technology.

Arctic Whisper Extreme Feature

Activating the noise reduction function.

Swing Function Operation

How to use the flap swing for air distribution.

Setting the Timer

Programming delayed start or shut down for the appliance.

Remote Control Pairing

Repeat CST Remote Pairing

Steps to re-pair the remote control with the appliance.

Compliance and Usage Advice

FCC and Canada EMC Compliance

Regulatory compliance statements for FCC and Industry Canada.

RF Exposure Statement

Information regarding radio frequency exposure limits.

General Usage Tips

Practical advice for optimal appliance performance and care.

Self-Diagnosis and Correct Use Recommendations

Self-Diagnosis Error Messages

Interpretation of error messages displayed by the appliance.

Correct Use Recommendations

Guidelines for efficient and proper operation of the air conditioner.

Maintenance, Specifications, and Limits

Appliance Cleaning

Instructions for cleaning the exterior of the air conditioner.

Air Filter Cleaning

Steps for removing and cleaning the air filter for optimal efficiency.

Start and End of Season Checks

Procedures for preparing the unit at the start and end of seasons.

End of Season Operations

Steps for draining and storing the unit at the end of the season.

Technical Specifications

Key technical data including power, refrigerant, and capacity.

Operating Limit Conditions

Environmental conditions within which the unit operates effectively.

Troubleshooting

Troubleshooting Guide

Solutions for common problems and malfunctions.

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DeLonghi EX CST Series User Manual

Table of Contents

Questions and Answers:

DeLonghi EX CST Series Specifications

Summary

Portable Air Conditioner

Instructions for Use

Electric Characteristics

Appliance Components and Accessories

Appliance Parts Identification

Included Accessories

Safety and Environmental Guidelines

Important Safeguards

Specific Warnings

Environmental Information

Installation Procedures

Installation Distance Requirements

Double-Hung Window Installation

Control Panel Operation

Sliding Window Installation

Control Panel Overview

Appliance Operation Modes

Turning Appliance On and Off

Mode Selection

Air Conditioning Mode

Remote Control Operation

Temperature Scale Selection

CST Remote Control Overview

Battery Installation and Replacement

Remote Control Functions

Using the CST Remote Sensor

Remote Mode Selection

Remote Temperature and Airflow Control

Special Features and Timer Settings

ECO Real Feel Function

Arctic Whisper Extreme Feature

Swing Function Operation

Setting the Timer

Remote Control Pairing

Repeat CST Remote Pairing

Compliance and Usage Advice

FCC and Canada EMC Compliance

RF Exposure Statement

General Usage Tips

Self-Diagnosis and Correct Use Recommendations

Self-Diagnosis Error Messages

Correct Use Recommendations

Maintenance, Specifications, and Limits

Appliance Cleaning

Air Filter Cleaning

Start and End of Season Checks

End of Season Operations

Technical Specifications

Operating Limit Conditions

Troubleshooting

Troubleshooting Guide

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