Why is my PUR Water Filter Blinking Red after Filter Change? Ultimate Guide

If you have a PUR filter, you must know PUR water filter troubleshooting to make life simpler with filters. I often see queries on why is my PUR water filter red blinking after a change?

People get anxious if they see a red blink on the PUR filtration unit immediately after replacing it. Don’t worry; I’m here to take you through all this blinking stuff and give you a clear idea of what different color grading means in PUR water filter indicator light.

What are the Best PUR Pitcher Water Filter Replacement Cartridges?

PUR RF9999 MineralClear Faucet Water Filter Replacement
PUR RF9999 MineralClear Faucet Water Filter Replacement
  • No.Of Filter: 6
  • External Testing: NSF
  • Benefits: Filters 70+ contaminants minerals and provides great taste of water
  • Compatibility: Fits in all PUR faucet water filtration systems
PUR Water Pitcher Replacement Filter
PUR Water Pitcher Replacement Filter
  • No.Of Filter: 2
  • Benefits: Reduces chemical contaminants
  • Compatibility: All PUR chemical, physical water pitcher and dispensers
ICEPURE CRF-950Z Pitcher Water Filter Replacement for PUR
ICEPURE CRF-950Z Pitcher Water Filter Replacement for PUR
  • No.Of Filter: 3
  • External Testing: RoHS, NSF
  • Benefits: Filters heavy metals, lead, sediment, rust
  • Compatibility: PUR pitchers and dispensers
ICEPURE CRF-950Z Pitcher Water Filter Replacement for PUR
PUR Plus Pitcher Replacement Filters
  • No.Of Filter: 5
  • External Testing: WQA, NSF
  • Benefits: Reduces chlorine
  • Compatibility: PUR pitchers and dispensers

Why is my PUR water filter blinking red after filter change

What does the red light mean at a traffic signal? It means you should stop driving until the green signal appears, right?

In the case of PUR filter, the red blink means the filter has stopped filtering the water and needs to be changed. If you just installed a new PUR filter, then the issue might be improper installation or a damaged filter.

If your existing PUR filter signals red, you can interpret this blinking as it might already filtered 100 gallons of water and need to be changed.    

How Do You Know if the PUR Water Filter is Working or Not?

It’s important to know when you should change your PUR water filter cartridges. You may ask why?

Because if your filter is not working correctly, it might deliver contaminated or impure water. To get clean water, free from harmful water contamination, replacing the older filter is a must.

So, you have to quickly identify if it is working fine or not and/or when to change the PUR filter.

Let’s check out some common indicators: 

  • If you see a red signal blinking on the panel bar, then it’s time to replace the PUR filter.
  • Check the pH; if it fluctuates from the standard range of 6.5 to 7.5, then its high time to change the filter.
  • You may also check the TDS and conductivity of treated water. If it’s out of range, then you must change the existing filter.
  • Bad smell, sediment accumulation, and slow filtration are the most commonly found indications of the pre-filters and filters not functioning properly.
  • If the water dispenser clogs frequently or provides weak water flow, you may count it as a filtration issue.

Related Interesting Article: Best Water Filter for a Pull-Down Faucet

Different Types of Indicator Lights in PUR Faucet Filtration System:

There are three different types of water filter indicator light in the PUR filter.

  • Green
  • Yellow
  • Red

What is green & yellow light in PUR water filtration?

Green means your PUR filter is functioning correctly, and now, you are getting safe and purified water.

Moreover, while the green light is on in the filter, you won’t need to worry about replacing the PUR faucet filtration system. You can rely on the water filtration system for pure drinking water.

The yellow light in the PUR filtration system stands for it’s about time to change the PUR filter. It indicates, your current filter is nearing the threshold of 100 gallons of water for the PUR filter or 40 gallons for the pitcher filter.

Red light stands for any malfunction in the PUR filtration unit. The major message it sends to the user is, it’s time to change the filter.

So, check out the status button, it signals when to change the water filter cartridge or a faulty installation. If accidentally the status button breaks down then you should consult an electrician to replace it, and keep changing the water filter cartridges after two months intervals. 

PUR water filter Troubleshooting

There are some common issues with the PUR filter. Few related to PUR faucet filter replacement, some associated with PUR water filter cartridges installation, and a couple related to general features.

In the upcoming section, we will do troubleshooting the filter for some commonly found issues.

Why is my PUR water filter light not working?

The indicator light might be in sleep mode. To restore from the sleep mode, you need to hold and press the PUR filter’s reset button, leading the light to be restored automatically.

Elements over times tend to lose their potency. So, you PR filter might face similar issues after a certain period of time.

Why PUR water filters slow tickle, and how to fix it?

For your information, there are two curved wedges inside the PUR filter. If somehow these two curved wedges are blocking the smooth passage of filtrate water towards the outlet. So, the filter slow tickle can be fixed by two simple methods.

One is to remove the PUR filter and shake vigorously. You will hear some elements repulsion sounds inside. Then install the PUR filter in place.

Another way is to, use a plastic washer and place it between the curved wedges.

If you change the filter multiple times, before expiry time, your filter should work just fine.

PUR water dispenser leaking continuously, what to do?

If you face a leakage issue with the PUR water dispensers, you need to check the filter placement, any types of pores on the dispenser’s outer surface.

Try to reinstall the filter by removing it from its existing position. You can mark the PUR filter installation as successful if you find the outlet right beneath the filtration system unit.

Why PUR water dispenser not draining properly?

A PUR filter dispenser can show slowness in draining if volatile substances clog into the filter or liquid bubbles create a film-like layer on the filtration unit.

To get rid of that issue, remove the filter and slowly bang it against a solid surface. Don’t hit too hard; it might rupture the inner setting of the unit.

Now, shake the filter before installing it on the filtration unit.

Why my PUR water filter smells bad?

This issue is commonly seen if the raw water consists too much of hydrogen sulfide. Another problem can be the accumulation of small organic molecules onto the filter mesh.

What you can do is remove the filter and soak it into an organic disinfectant solution. Take two litres of water and juice one lemon in it, or you can use two tablespoons of white vinegar into the water.

Now, soak the PUR filter in it and reinstall the filter after drying.

Can’t reset PUR water filter button, how to do it?

The resetting process is simple, press and holds the rest button for 5 seconds. Generally, you will find the rest button on the top of the lid.

Pressing the filter reset button for five seconds, the PUR filter indicator light will blink green if the resetting is successfully done. Check the status button after resetting is done.

PUR DS1811z ultimate water dispenser white leaking spout

Some of you will agree with me that PUR DS1811z has some faulty design. The spout is responsible for the continuous dripping of liquid.

If you find similar leakage in the water dispensers, then there might be two reasons for this. Number one is the spout has a sealing issue, and number two is the hardness of raw water can generate white leaking spout.

To solve this issue, you need to change the faucet filtration system.

In different articles, you will get another suggestion on white leaking spout. But the best way is to replace the faucet, and while replacing the PUR DS1811z ultimate water dispenser, you must check for the perfect fit of the spout.

Interestingly, PUR filter 18 cup dispensers leaking also can be solved by following the procedure mentioned above.

Why PUR filtrate water tastes metallic?

PUR filters are the perfect filtration unit for filtrating an excess amount of iron and balancing pH levels. Sometimes, the filter jams up and holds some metallic ions on the mesh of the filter.

Due to extra liquid pressure, iron or other metallic ion passes through the filter and generate a metallic taste of the drinking water. To remove PUR filter metallic taste, the filter needs to be adequately cleaned.

If replacement of the filter is required, it should be done immediately.  


In the end, hopefully, you have successfully troubleshot different issues with the PUR water filter. PUR filter troubleshooting is now much easier if you follow our instructions carefully. Be safe with pure drinking water from the PUR filtration unit.