/ / / What Does E5 Mean: 4 Reasons and Troubleshooting Guide

What Does E5 Mean: 4 Reasons and Troubleshooting Guide

What does E5 mean? Many AC owners have this query. If you are also one of those, don’t worry, you are at the right blog post! In short, this error refers to overheating of a unit. Read on as I have compiled the 4 best troubleshooting tips along with the causes behind this error code on different AC brands. Without any further delay, let’s get started!

What Does E5 Mean? A Quick Overview of Error Code

To answer quickly, let’s first go through what E5 means:

What Does E5 Mean. A Quick Overview of Error Code
  • E5 is one of the most popular error codes that is caused due to the overheating of a system.
  • To avoid any damage to the AC itself, the unit will display this error and will stop working.

But this is only the basic value of the E5 error in most speakers. Depending on the brand, the meaning and causes of the error may vary. Keep reading to find the meaning of your air conditioner and learn how to troubleshoot quickly!

4 Reasons Behind the E5 Error Code With Solutions

Upon encountering the E5 error code on your portable AC unit, it’s crucial to promptly identify the potential issues and address them accordingly. Let’s discuss the four possible causes along with their solutions.

Reason 1: Blocked Condensation Drain Line

The major issue behind the E5 error code is often a clogged condensate drain line. This important component transports condensation from the AC unit to the water collection tank. However, it accumulates dirt and debris over time, which causes inconvenience for users.

Reason 1: Blocked Condensation Drain Line
Credit: www.youtube.com @thehvachacker

Considering your portable air conditioner model, you may have the option to detach the condensate line from the unit.

  • Make sure to clear any obstructions and clean the pipes from dirt.
  • Allow them to air dry for a few hours before reattaching the condensate line, and then check if the error code has disappeared.

Reason 2: Dirty and Unclean Air Filter

An unclean and dirty air filter can restrict airflow around your AC unit, leading to various problems, including overheating and compressor issues. It can also cause condensation to freeze and thaw within the unit, resulting in the E5 error code.

Reason 2: Dirty and Unclean Air Filter
Credit: www.youtube.com @jonesacnaples

To address this issue, follow these steps:

  • Switch off and unplug your AC.
  • Open the front lid and remove the filter by gently pushing it inwards.
  • Clean the air filter by rinsing it under running water, also you can gently brush it to remove debris.
  • Let the filter dry for a few minutes and then reinstall the clean filter.
  • Plug your portable air conditioner and turn it on.
  • Check if the error code has disappeared.

Reason 3: Iced Evaporator Coils

The accumulation of ice on the frozen evaporator coils can result in ice buildup around components such as the fan motor, filter, and various AC unit parts. As this ice melts, the resulting condensation drips into the water collection tank, frequently triggering the E5 error.

Reason 3: Iced Evaporator Coils
Credit: www.youtube.com @chamilarathnayake
To prevent ice buildup on the frozen evaporator coils, make it a routine to clean them regularly using a vacuum cleaner and compressed air. This maintenance practice will contribute to the smooth operation of your air conditioner.

Reason 4: Refrigerant Leakage

When it comes to a refrigerant leak, it’s crucial to understand that AC unit relies on refrigerant to effectively cool the air, and a refrigerant leak can lead to freezing up, excessive condensation in the drain pan, and eventually, the display of an E5 error code.

Reason 4: Refrigerant Leakage
Credit: www.youtube.com @TaddyDigest
If hissing sounds are coming from your unit and is not cooling effectively, it might be due to refrigerant leakage. As the leaks are hazardous please contact a qualified technician to inspect and repair your air conditioner.

For further insights, you can check out this useful video.

Resolving Error E5: Troubleshooting Guide for Various AC Brands

Facing the E5 error code on your AC can be a frustrating experience. However, below, I have provided detailed solutions for addressing the E5 error in different air conditioner brands, including:

  • Carrier;
  • Hisense;
  • LG;
  • Gree;
  • Daikin;
  • Tornado.

Whether it’s a malfunctioning sensor or a refrigerant issue, follow the comprehensive DIY steps to tackle the problem.

Carrier Air Conditioner

In the presence of the E5 error code on your Carrier AC, it indicates a malfunction in the unit’s evaporator temperature sensor. This issue can lead to overheating and a subsequent system shutdown. To address these issues comprehensively:

Carrier Air Conditioner
Credit: www.youtube.com @f12023
  • Clean the Sensor: To begin, disconnect power to the unit. Then, identify the evaporator temperature sensor and meticulously clean it to eliminate any dirt or debris that might be affecting its functionality.
  • Inspect Connections: Examine all connections associated with the sensor, ensuring they are tightly secured and undamaged.
  • Test the Sensor: If cleaning and reseating the sensor doesn’t resolve the issue, you can test the sensor’s functionality using a multimeter. If it’s found to be faulty, replace it with a new one, readily available from HVAC supply stores.

Hisense Portable Air Conditioner

The E5 error in a Hisense portable air conditioner indicates a low refrigerant level, which can arise from a refrigerant leak or improper charging during installation. Here’s how to address these issues effectively:

Hisense Portable Air Conditioner
Credit: www.youtube.com @HisenseCA
  • Identify Leak: To identify a refrigerant leak, locate potential leak points, such as joints and connections. You can then use a soap and water solution to check for bubbles when suspecting a leak.
  • Recharging the Unit: If you suspect undercharging during installation, you can attempt to recharge the unit with the correct refrigerant. Consult your unit’s manual for specifications and follow the manufacturer’s guidelines for the safe recharging of the Hisense portable air conditioner.

LG Air Conditioner

To troubleshoot the LG E5 error code, which indicates communication issues between the unit and the indoor evaporator coil sensor, follow these steps:

LG Air Conditioner
Credit: www.youtube.com @Inspire2rise
  • Cleaning the Sensor: Begin by disconnecting the power to the unit. Locate the indoor evaporator coil sensor and use a soft cloth to gently clean it, removing any dirt or debris.
  • Inspecting Wiring: Next, inspect the wiring that connects the sensor to the AC unit. Replace any loose or damaged wires you may find.
  • Unit Resetting: If the error persists, turn off the unit and unplug it for a few minutes. Afterward, power it back on to check if the error code disappears.

Gree Air Conditioner

When you encounter the Gree E5 error code, it typically indicates an issue with the evaporator temperature sensor. Fortunately, troubleshooting this problem doesn’t require any complex processes.

Gree Air Conditioner
Credit: www.youtube.com @gree_us4818
  • Clean a sensor: You need to take aclose look at the sensor if it is dirty or contaminated and clean it gently.
  • Replace a sensor if needed: If the problem still persists use a multimeter to test its functionality, incase the sensor is faulty replace it with a new one.

Daikin Air Conditioner

To resolve the Daikin E5 error code, signifying an incorrect voltage supply to the outdoor unit, users can easily follow the provided guidelines:

Daikin Air Conditioner
Credit: www.youtube.com @MitchAttwood
  • Voltage Verification: Carefully inspect the outdoor unit to confirm it receives the specified voltage as outlined in the unit’s manual. Loose connections or tripped breakers may result in voltage-related issues.
  • Check Circuit Breaker: Examine the circuit breaker associated with your air conditioner. If it has tripped, reset it by turning it off and then on. This can sometimes resolve voltage-related issues.

Tornado AC Unit

An E5 error in a Tornado AC system generally points to a communication problem between the indoor and outdoor units. This communication issue can arise due to various factors, such as wiring problems, sensor malfunctions, or electronic control board issues.

Tornado AC Unit
Credit: www.elarabygroup.com

To diagnose and resolve the specific cause, consider the following general instructions:

  • Examine Wiring: Carefully inspect the wiring connections between the indoor and outdoor units. Ensure all connections are firmly in place and free from damage. If you discover any loose or damaged wires, address them by repairing or replacing them as necessary.
  • Temperature Sensors: Ensure that the temperature sensors in both the indoor and outdoor units are clean and functioning correctly. Dirt or contamination on the sensors can cause communication problems.
  • Remote Control: If your Tornado AC comes with a remote control, check its batteries and ensure it’s functioning correctly. Sometimes, remote control issues can affect the communication between units.


Can I fix the E5 error code on my air conditioner myself?

Yes, you can easily fix the E5 error yourself by following the proper troubleshooting steps in the user manual. Simple issues like clogged lines, dirty air filters or frozen evaporator coils can be DIY fixed.

When should I call a professional to fix the E5 error code on my air conditioner?

Call a professional when the problem persists after trying basic troubleshooting, or if you’re unsure about the problem. Also, if there’s a refrigerant leak or a major electrical issue, having a pro handle it is safer.

What are the risks of ignoring the E5 error code on my air conditioner?

Ignoring the E5 error can lead to reduced cooling efficiency, higher energy bills, and potential damage to the unit. It may also cause more significant and costly issues over time.

How can I prevent the E5 error code from happening?

To prevent the E5 error code from happening, you need to perform regular maintenance of your AC like cleaning a dirty filter, resolving faulty thermostat issues, and checking for loose wires.


Let’s revise what does E5 mean. It indicates that your AC is overheated or has communication issues. However, with easy DIY solutions, your Ac will start working again. If there are any communication issues between units, try checking the remote control.

If there are issues with evaporator coils, then check the temperature thermometers and try cleaning or replacing them. When facing overheating issues, unplug your AC and plug it in again after a few minutes.

Which AC brand do you currently use and have you ever faced any E5 error code issues before? Provide your feedback in the comment section!

Similar Posts