Why Is My Pur Water Filter Blinking Red After Filter Change?

Last Updated on September 25, 2022 by Peralta

Owning a Pur water filter is a treat. However, once in a while, you will need to answer questions like ‘Why is my Pur water filter blinking red After Filter Change?’ knowing how to troubleshoot this and other common problems can save you a lot of money and effort. Seeing the red blinking light can be alarming. However, fixing it is pretty easy. Keep reading to find out more.  

Why Your PUR Water Filter Blinks Red After Filter Change

PUR Water Filter Blinks Red After Filter Change

The red filter is not as bad as you may imagine. It only indicates that your filter isn’t working. If it happens before a filter change, it suggests that yours may need to be changed. If, however, it happens right after a filter change, you probably didn’t install it correctly. PUR filters are only meant to filter 100 gallons of water. After that, they have to be replaced. 

Is Your PUR Water Filter Working?

Knowing if your PUR water filter is working makes it easy to know when it is due for replacement. Failure to change your filter means you may be consuming impure or contaminated water. Here are a few indicators of a PUR water filter that isn’t working:

  • A red light is blinking on your panel bar. This is proof that your filter needs to be replaced.
  • Your water dispenser often blocks or doesn’t have a strong water flow. This may indicate that you have a filtration problem.
  • Fluctuating PH is a sign that you need to replace your filter. If it goes beyond the regular range of 6.5 to 7.5, you have a problem.
  • Accumulation of sediments, foul smells, and slow filtration are indicators that you need to change or properly install your filters.

How do you reset the PUR water filter light?

reset the PUR water filter light

The purity of your water has a lot to do with the light on your PUR. The filter light shows how well your filter is functioning. Unless the light is right, the system is not working as it should. 

There are various ways to reset the PUR water filter light. The appropriate step depends on the light displayed. However, there is no guarantee that issues won’t recur. 

Your PUR water filter may have three indicator lights; red, green, or yellow. The color green suggests that your filter is in great condition. Your water is perfectly purified and safe for drinking. In addition, when the green light is on, there is no need to replace your faucet filter. It is still reliable. 

The yellow light in your system means your filtration system is still in good condition but will need to be changed soon. It suggests that your PUR filter is close to hitting the 100 gallons of the watermark. 

On the other hand, the red light is an indication of malfunction. Its main message is that you need to replace your filter. Always pay attention to your status button. It lets you know when your water filter cartridge needs to be changed or reinstalled. 

If your status button has accidentally broken down, get an electrician to replace it as soon as possible. You’d be wise to change your pur water filter cartridges at least once every two months. 

The Faucet

If you are sure that your PUR filter is in good condition, but it doesn’t work, try turning your faucet off first. Unscrew your PUR unit cover and remove the filter. After replacing your filter, screw your cover back into position. 

Holding the reset button, wait until three lights flash and release. This shouldn’t take more than three seconds. As you hold the reset button, don’t let it get stuck. If it appears to be stuck, pull up on it slowly until it gets back into the right position. 

Turn on the water and the filter lever. Check to ensure that the filter light is green. If it still flashes red, you may need to reinstall the filter or get professional help. 

Dispensers and Pitchers

When you replace a new filter, press the reset button on your pitcher or dispenser and hold it for about five seconds. The light should flash green.

What If the Light Doesn’t Reset?

In most instances, you’ll have no trouble resetting your PUR unit. If, however, the light won’t reset, it may be the result of dirt blocking your filter screen. In such instances, the system will assume that your filter is incapable of functioning. 

The first step should be to remove all debris. Start by rinsing the filter housing and scraping off any stuck debris. When it is dry, assemble your system and hold the reset button for a few seconds. 

Fixing a Slow PUR Filter

Based on their certification, PUR filters can get rid of over 70 contaminants, hence purifying your water. They work much better than most brands. However, you may run into the challenge of your filter pitchers and faucet filters being too slow. 

The main reason why your PUR filters may become slower than usual is air blockages. However, it may also be caused by improper installation, using an old filter, mineral damage, or high sediment levels. 

Moreover, the PUR MineralClear® filter is slower than the basic filter. This is mostly because it has higher contaminant reduction.

Flushing Your Filter Before Use

Flushing your filter before using it is a great idea. It could help prevent issues like a slow filter. If the carbon particles in your filter cartridge are dislodged, the performance of your filter will suffer unless you remove them. You may notice the particles as little black specs in water. 

During transport, it is almost impossible to keep filter material from loosening. Therefore, you should always flush your filters before use. It is good for your health too. 

Flushing your PUR filter is easy. Here are the steps to follow:

  • Install your filter and switch your cold water faucet on.
  • Run your faucet for about five minutes to get rid of air bubbles and sediments that may be held in your filter.
  • For PUR dispensers and pitchers, keep your filter in a bucket of cool water and let it sit in there for 15 minutes.
  • Put your filter into the dispenser or pitcher and ensure that the top reservoir is filled with water. Allow it to filter and then pour out the water. Repeat once or twice to get rid of all carbon particles. 

Hot Water Damage

Many PUR users don’t realize that hot water could damage their filters. The filters are specifically meant to filter drinking water. Therefore, they are only appropriate for cool water. Running hot water through a PUR filter damage the media, causing problems. It is one of the main reasons your filter may perform slower than usual. 

If hot water creates holes in your filter, it may perform much faster than usual. This, therefore, means you will be letting in a lot of contaminants. Ideally, you shouldn’t use your faucet filter at temperatures over 100˚F (38˚C). Your water temperature shouldn’t be higher than 82°F (28°C) for water filter dispensers and pitchers.


‘Why is my Pur water filter blinking red after a filter change?’ This and many questions may cross your mind when using PUR units. However, the troubleshooting process is easy. Although red means that your filter isn’t working appropriately, all you need to do is replace it. The green color lets you know that everything is fine, and the yellow prepares you to replace the filter soon.

PUR brings you a wide variety of water filter solutions, so there is something for everyone.  You can rely on the company for products that focus on reliability, durability, and safety. If you run into any challenges, you should be able to fix them with a few troubleshooting tips. If, however, you experience any significant issues, you should consider consulting with a PUR representative.

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