Why Is My Water Softener Blinking/Flashing?

If your water softener is blinking or flashing, it is likely that an error code has been displayed. Error codes are used by the softener to indicate problems and provide maintenance advice. Common error codes include high-salt warnings, low-salt warnings, brine tank float valve issues, flow meter issues and mineral tank issues. By understanding the meaning of each error code, you can quickly identify and correct any issues in your water softener system.

What Does Blinking Mean?

What Does Blinking Mean
Blinking on water Softener

A blinking or flashing light on your water softener can mean different things depending on the make and model of your system. Generally speaking, a blinking light might indicate a power issue, such as an electrical outage in your area, or a problem with the control board within the system. In most cases, this will require professional attention to repair.

If the blinking light is accompanied by a beeping sound, it may indicate that the system needs to regenerate, which can happen if there’s been an unusually high demand for soft water, or if your settings are off. If this is the case, you should check your user manual and adjust your regeneration frequency as needed.

How Blinking Is Different From Other Warning Signs?

The blinking or flashing light on your water softener may indicate a warning, but it’s different from other signs. The most common of these are error codes that usually appear on the digital display when something isn’t working correctly. Blinking is more general and can indicate one of several possible issues with your system. It could be anything from a minor problem to something more serious, so it’s important to pay attention and take action if you see blinking lights.

Why Is My Water Softener Blinking/Flashing?

Low salt levels: One of the most common reasons for a water softener to blink or flash is that it has low salt levels. If this is the cause, topping up your salt levels should solve the issue.

A malfunctioning sensor: If your water softener is blinking or flashing, it could be an indicator of a malfunctioning sensor. This could be a result of a dirty filter or scale build up on the sensor itself. Replacing the filter and cleaning out any debris from the scale build up should solve this issue.

Clogged resin beads: The resin beads in your water softener can become clogged over time with sediment, dirt, and other minerals. If this happens, the softener will not be able to filter out hard water and the red light indicator on your unit will begin flashing. To fix this issue you should check the brine tank for salt buildup or debris and backwash the resin bed if necessary. It’s also a good idea to check the control valves and make sure they are open and working properly. If this doesn’t solve the problem, it may be time to replace the resin beads in your unit.

A power surge: A blinking or flashing light on a water softener can often be caused by a power surge in your home.

A faulty control board: One of the more common reasons why your water softener might be blinking or flashing is a faulty control board. The control board monitors the performance of your system and will alert you if there is an issue with its operation. If it senses that something isn’t functioning properly, it may generate a fault code or signal by blinking or flashing on the display. Fault codes can signal everything from low salt levels to a clogged filter or something more serious, like a pump failure.

Is The Time Of Day Blinking?

If the blinking light is displaying the time of day, then this indicates that your system has reset itself and is ready to be reprogrammed. This could be due to a power outage or surge, a loose wiring connection, a drained battery, or an internal fault. If you have replaced the battery already and the problem persists, contact a professional to help you diagnose the issue.

Have You Checked Your Salt Lately?

Have You Checked Your Salt Lately
Checked Your Salt

One of the most common causes for a water softener blinking or flashing is low salt levels. Salt helps to regenerate the resin beads in your softener, so ensuring your salt levels are adequate is key for keeping your water softening system functioning properly. Check the brine tank to see if there is still salt present and that it is not caked together. If there is none, or it appears to be solidified, you will need to refill your salt tank. Once the tank is refilled with a good quality and clean salt, the unit should reset itself and start working properly again.

Is Someone Using Water In The House?

Is Someone Using Water In The House
Using Water In The House

If your water softener is blinking or flashing, it could indicate that someone in the house is using a lot of hot water. A large spike in demand for hot water can cause the controller to activate its safety mode and blink/flash. This is usually indicated by an orange light. Restarting the system will normally resolve this issue.

Do You Get Your Water Softener Serviced Regularly?

If you’re noticing that your water softener is blinking or flashing, it could be a sign of an issue with the system. To prevent any major problems from occurring, it’s important to get your water softener serviced regularly by a professional plumber. A regular service can help identify any issues before they turn into bigger, more costly problems.

A water softener service includes a comprehensive inspection and tune-up of the system, which will help to ensure it is running in top condition. This includes checking the flow rate, pressure levels, timer settings and any additional parts such as valves, gaskets or filters. The technician will also check for any signs of potential leaks or blockages, and if necessary, will clean the resin bed and salt tank.

Is There An Err Or Error Light Blinking?

Is There An Err Or Error Light Blinking
An Err Or Error Light Blinking

If there is an ERR or ERROR light blinking, this indicates that the water softener has detected a problem. This could be due to a power outage, incorrect settings, a backflow valve issue or a clogged brine tank. It can also happen if the system needs to regenerate. If you’re experiencing any of these issues, you’ll need to reset the system or contact a professional for help.


How do I know if my water softener is regenerating?

If your water softener is regenerating, you’ll see the indicator light blinking or flashing. This indicates that the regeneration process has started and salt is being added to the tank to soften the water.

What does brine dn mean?

Brine dn means that the water softener is in the Brine Draw phase, which is the step where it draws salt from the brine tank to begin its regeneration cycle. This blinking light indicates that the water softener is running low on salt and needs a refill of salt soon. If your water softener continues blinking or flashing and no salt is added, it will eventually enter a “lockout” mode where the regeneration cycle can’t be completed. If this happens, you’ll need to reset your water softener or contact a professional for help.

When should I add more salt?

It’s important to keep an eye on the brine tank in your water softener to make sure it has enough salt. It’s recommended that you add more salt when the salt level drops below the halfway mark. Doing this will ensure that your system is properly regenerating and providing you with clean, soft water.

What salt should I use in my water softener?

The type of salt you use in your water softener depends on the make and model of your system. Most systems require sodium chloride (salt), which can usually be purchased in either block or pellet form at most home improvement stores. Some higher efficiency models may also support potassium chloride, but before using this type of salt it is important to check with the manufacturer of your system to make sure it is compatible.


If your water softener is blinking or flashing, it could be due to several different causes. It’s likely you will need to contact a professional for further diagnosis and repair. Common issues include the control valve, sediment build-up, brine tank overflow, failed regeneration cycle, or a clogged injector. Taking care of your water softener regularly can help prevent these issues from developing. Clean the injector annually, maintain a regular regeneration schedule, and keep an eye out for any unusual noises or lights coming from your system. If you believe there is an issue with your water softener, contact a professional right away to ensure it’s fixed promptly.

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