Intex Hot Tub E90 Error Fix – Quick Troubleshoot Guide!

Are you frustrated by the E90 error on your Intex hot tub? Wondering why it keeps happening and how to fix it? Look no further! In this quick troubleshoot guide, I will provide you with step-by-step solutions to resolve the E90 error and get your hot tub back up and running.

When you see the E90 error on your Intex hot tub, it means that there is a problem with the water flow. This issue can be caused by various factors, such as a dirty filter cartridge, blocked or twisted connections, or debris in the spa tub inlet and outlet grids. Fortunately, with the right troubleshooting techniques, you can easily fix the E90 error and enjoy your hot tub again.

Key Takeaways:

  • Cleaning the filter cartridge is essential to resolve the E90 error.
  • Blocked or twisted connections can prevent water flow and trigger the E90 error.
  • Debris in the spa tub inlet and outlet grids can cause the E90 error.
  • Following the step-by-step solutions in this guide can help you fix the E90 error on your Intex hot tub.
  • Preventative measures can minimize the occurrence of E90 errors in the future.
An illustration of a person troubleshooting an Intex hot tub with an E90 error code displayed on the control panel.

Understanding the E90 Error Code in Intex Hot Tubs

In this section, we will dive deeper into the E90 error code in Intex hot tubs. It is essential to have a clear understanding of this error to effectively troubleshoot and resolve the issue. Let’s explore the signs, causes, and the relationship between water flow and the E90 error in your hot tub.

Identifying the Signs of E90 Error Code

One of the first steps in troubleshooting the E90 error code is being able to identify its signs. These signs can include alarms or error messages displayed on the control panel of your hot tub. Pay close attention to any warnings or alerts indicating the E90 error code, as they will provide valuable information for diagnosing the issue.

What Causes the E90 Error in Your Hot Tub

There are several potential causes of the E90 error in your Intex hot tub. Understanding these causes will help you pinpoint the specific issue and take appropriate action. Common causes of the E90 error include a dirty or clogged filter cartridge, blocked connections or hoses, and the presence of debris in the spa tub’s inlet and outlet grids. By identifying the root cause, you can address the problem effectively.

The Relation Between Water Flow and E90 Error

Water flow plays a crucial role in the occurrence of the E90 error in hot tubs. Insufficient water flow or a complete lack of flow can trigger the E90 error code. It is important to ensure that the filter cartridge is clean, the connections are free from blockages, and there is no debris obstructing the water inlet and outlet grids. By maintaining optimal water flow, you can prevent the E90 error from occurring.

A birds-eye view of an Intex hot tub with poor water flow.


Why Does My Intex Hot Tub Keep Saying E90: Step-by-Step Solutions

If your Intex hot tub keeps saying E90, it can be frustrating and disruptive to your relaxation time. Luckily, there are step-by-step solutions that can help you troubleshoot and fix the E90 error code in your hot tub, allowing you to get back to enjoying the soothing warmth and therapeutic benefits it provides.

The first step in resolving the E90 error is to check and clean the filter cartridge. A dirty or clogged filter can restrict water flow and trigger the E90 error. Start by removing the cartridge and rinsing it with clean water. If it is excessively dirty or damaged, consider replacing it with a new one. Proper maintenance of the filter cartridge is essential for optimum hot tub performance.

Next, inspect the connections in your hot tub to identify and clear any blockages. Ensure that all hoses and pipes are securely connected and free of twists or kinks. If you notice any obstructions, gently remove them to restore proper water flow. It’s important to regularly check these connections to prevent future issues and ensure smooth operation of your hot tub.

In addition to filter maintenance and connection checks, it is crucial to remove any debris from the spa tub itself. Over time, leaves, twigs, hair, and other particles can accumulate in the inlet and outlet grids, obstructing water flow and triggering the E90 error. Use a soft brush or cloth to remove any visible debris from these grids, ensuring they are clean and clear.

An Intex hot tub with an E90 error code message on the control panel.

By following these step-by-step solutions, you can effectively troubleshoot and fix the E90 error code in your Intex hot tub. Regular maintenance and timely intervention can help you avoid further disruptions to your hot tub experience and ensure that it operates at optimal performance.


In conclusion, fixing the E90 error in your Intex hot tub is achievable by following the troubleshooting guide provided. By understanding the signs, causes, and relationship between water flow and the E90 error code, you can diagnose the issue accurately and take appropriate action.

To avoid future E90 errors, it is crucial to implement preventative measures. Regularly clean and maintain the filter cartridge to ensure proper water flow. Additionally, inspect and clear any blocked connections, and remove any debris from the spa tub’s inlet and outlet grids. These simple steps can help prevent the recurrence of the E90 error and keep your hot tub running smoothly.

However, there may be instances where seeking professional help becomes necessary. If you have followed all the troubleshooting steps and the E90 error persists, it is recommended to contact an Intex certified technician. They possess the specialized knowledge and expertise to identify and address any complex issues that may be causing the error. Seeking professional assistance can ensure the long-term performance and functionality of your Intex hot tub.

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  • Vincent S

    Passionate about all things inflatable, I'm here to share my expertise and recommendations on the latest air-filled wonders. Join me in exploring the world of inflatables, from cozy air mattresses to playful pool floats, as we dive into a realm of comfort and leisure. Let's elevate your inflatable experience together!

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