Pentair Intellichlor Flashing Red And Green: Understanding the Issue

Pentair intellichlor flashing red and green indicates a fault or error with the device. Troubleshooting the issue is necessary to determine the cause and solution of the problem.

Pentair intellichlor is a reliable and efficient way to sanitize your pool. However, the flashing red and green light can be alarming and confusing at times. The different sequences of flashing lights on the device indicate specific errors that need to be addressed to resume operation. It is essential to follow the user manual guidelines to identify the issue and troubleshoot the problem effectively. Some common causes of the blinking red and green light are low salinity levels, malfunctioning temperature sensor, or power supply issues. Once you identify the specific problem, you can contact the manufacturer or your pool technician to guide you through the repair process or provide a solution.

Pentair Intellichlor Flashing Red And Green: Understanding the Issue


Possible Causes Of The Issue

If you’re experiencing a flashing red and green intellichlor, it may be due to a variety of reasons. In this section, we’ll explore some possible causes that could be affecting your system’s performance.

Loss Of Connection

Low Water Flow

Improper Power/Wiring

  • Poor electrical connections and problem on the wiring could be messing up with the system’s performance.
  • Inaccurate power supply can lead to intellichlor flashing red and green.

Dirty Cells

  • Dirty cells can impact the performance of your pentair intellichlor system.
  • Regular cleaning is necessary to avoid accumulation of contaminants and minerals that can cause the system to malfunction.

Malfunctioning Pcb

  • The printed circuit board or pcb can be damaged or malfunctioning, leading to flashing red and green.
  • Electrical resistance in the printed circuit board could affect the performance of the sensor circuits and cause the system to malfunction.

If you’d like to troubleshoot the problems related to your pentair intellichlor, start by checking each of these possible causes to identify the reason for the flashing red and green. With careful attention to these issues, you can ensure your intellichlor system is always operating efficiently and effectively.

How To Detect The Issue

Pentair intellichlor flashing red and green: how to detect the issue

If you own a pentair intellichlor system and are experiencing flashing red and green indicator lights, you may be wondering what the issue is and how to easily diagnose and fix it. This guide will walk you through the steps necessary to detect the issue and get your system back up and running smoothly.

Understanding The System’S Indicator Lights

Before attempting to diagnose the issue, it’s important to understand what the indicator lights mean.

  • Solid green: system is operating normally.
  • Solid red: system has shut down due to a fault.
  • Flashing green: chlorinator is generating chlorine.
  • Flashing red: chlorinator is not generating chlorine.
  • Flashing red and green: the control board has experienced a critical error.

Checking Water Flow And Making Sure The Filter Is Clean

One common cause of flashing red and green lights is insufficient water flow.

Inspecting The Unit And Checking Connections

If checking water flow and the filter doesn’t resolve the issue, inspect the system, and verify all connections are secure.

  • Check all power and communication cables for damage or loosening.
  • Make sure the system is properly grounded.
  • Inspect the cell for proper placement and observe any visible damage.

Using Diagnostic Mode To Identify Issues

If none of the previous steps resolve the issue, utilize the diagnostic mode to identify the problem:

  • Turn off power to the system.
  • Press and hold the diagnostic button until the flashing green and red lights appear.
  • Let go of the diagnostic button. The flashing will now continue in diagnostic mode, which will provide a code on the control board for troubleshooting purposes.

Exploring Other Possible Causes

If you’ve exhausted all the above steps, explore other potential causes of the issue.

  • Low salinity levels or low salt in the system.
  • Calcium buildup on the cell plates.
  • An outdated system that requires a software update.
  • A malfunctioning control board that needs replacing.

By following the above steps, you should be able to diagnose the issue behind the flashing red and green lights on your pentair intellichlor system. Keep in mind that if you are still experiencing issues, it is best to contact a professional for assistance.

How to diagnose a Pentair ic-20, ic-30, ic-40, and ic-60 salt cell

How To Troubleshoot And Fix The Issue

If you own a pentair intellichlor system, you may encounter the flashing red and green lights issue. This problem indicates a range of potential problems with the system that can include dirty or damaged cells or even an issue with the pcb.

The good news is that troubleshooting and fixing the issue is often straightforward, and you can tackle many of these problems on your own. Here are some things to consider if you experience the intellichlor flashing red and green lights issue.

Specific Troubleshooting Steps For Each Cause Listed Above

To troubleshoot and fix the intellichlor flashing red and green lights problem, you need to consider a few potential culprits.

  • Dirty or scaled cells – check the cells to make sure they are not dirty, clogged, or scaled. If they are dirty, clean them with an acid solution by following the manufacturer’s instructions. If they are scaling, you may need to use a different type of acid solution. If the cells are too damaged, you may need to replace them completely.
  • Pcb issue – check the pcb to ensure it’s working correctly. If it needs to be replaced, you’ll need to order a new one from the manufacturer and follow the installation instructions carefully. If you’re not comfortable replacing it yourself, consider hiring a professional who can do it for you.

How To Clean Cells

One of the most common culprits of the intellichlor flashing red and green lights issue is dirty or scaled cells.

  • Turn off the power to the system.
  • Remove the cell from the intellichlor system.
  • Mix an acid cleaning solution (like muriatic acid) with water according to the manufacturer’s instructions.
  • Soak the cell in the solution for about 10-15 minutes.
  • Use a soft-bristled brush to scrub away any buildup or debris.
  • Rinse the cell thoroughly with water.
  • Reinstall the cell and turn on the power to the system.

How To Check And Replace The Pcb

If you suspect that the issue lies with a faulty pcb, you’ll need to check it and potentially replace it altogether.

  • Turn off the power to the system.
  • Locate the pcb (it’s typically found inside the power center).
  • Inspect the pcb for visible damage, such as burn marks or corrosion.
  • Check the continuity of the circuit board with a multimeter (following the manufacturer’s instructions).
  • If you determine that the pcb is damaged or not working correctly, order a replacement from the manufacturer.
  • Follow the installation instructions carefully to replace the pcb.
  • Turn on the power to the system and test to ensure it’s working correctly.

Recommendations For Professional Help If Necessary

While many of these issues can be addressed on your own, you may need professional help in some cases. If you’re not comfortable troubleshooting or repairing the system, or if you suspect that the issue is more complex, it’s always best to hire a professional who understands the system and can diagnose the problem correctly.

Look for a reputable pentair dealer or service provider who can help.

Tips For Maintaining The System To Avoid Future Issues

Preventing future issues with your pentair intellichlor system is crucial.

  • Regularly check and clean the cells to prevent scaling and buildup.
  • Test the ph and chlorine levels often to catch any imbalances early.
  • Keep the area around the intellichlor system free of debris and pests.
  • Schedule routine maintenance with a professional to catch any issues early before they become more significant problems.

By following these tips, you can avoid many of the common issues that can arise with your pentair intellichlor system and keep it working smoothly for years to come.

Frequently Asked Questions Of Pentair Intellichlor Flashing Red And Green

What Does It Mean When My Pentair Intellichlor Is Flashing Red And Green?

It means there is a communication error between the intellichlor and the intellitouch, easytouch, or suntouch control system.

How Can I Fix A Pentair Intellichlor Flashing Red And Green?

Check the communication cable between the intellichlor and the control system and ensure it is not cut or damaged.

What Are The Other Possible Reasons For A Pentair Intellichlor Flashing Red And Green?

A faulty intellichlor cell, a dirty flow switch, or a malfunctioning control board could also cause the flashing.

How Often Should I Clean My Pentair Intellichlor Flow Switch?

Clean the flow switch every three months at minimum. You may have to clean more frequently depending on the amount of debris.

How Long Does A Pentair Intellichlor Cell Last?

The life of a pentair intellichlor cell will vary depending on the usage and treatment of the cell, but typically lasts 3 to 5 years.


Pentair intellichlor flashing red and green could indicate a variety of issues. It’s important to identify the source of the problem as soon as possible to prevent further damage to the system. By following the troubleshooting steps outlined in this article, you can diagnose the issue and restore your system to working order.

If you’re still experiencing issues after attempting these steps, contact a professional for further assistance. It’s always best to address problems promptly to ensure the longevity and efficiency of your pool system. By staying vigilant and proactive, you can enjoy a beautiful, clean, and safe swimming pool for years to come.

Don’t let flashing lights on your pentair intellichlor interfere with your summertime fun; take charge and address the issue head-on.

Home Advisor Blog

Home Advisor Blog is a reader-supported blog. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.