Introduction
A water purifier is one of the very important devices installed in your house. It is something you require on a daily basis for safe drinking purposes. However, in case there is an issue with your water purifier, it can be a big trouble. There can be different issues like no water, bad taste, water leakage, and unusual sound.
However, there is some good news as far as such issues are concerned because there are mostly very simple problems that can easily be handled within minutes without having to call any expert technician.
Here is a full guide about some of the Common Water Purifier Problems and Solutions. If you notice water pooling under your purifier, read our complete guide on water purifier leaking water to identify the exact cause and fix it quickly.
Quick Answer (Most Common Problems)
Common water purifier problems include:
- Water not coming
- Bad taste or smell
- Slow water flow
- Leakage
- Noise issues
- Tank not filling
Most problems are caused by:
- Clogged filters
- Low water pressure
- Faulty pump or membrane
- Lack of maintenance
Common Problems & Quick Solutions
| problem | Main Cause | Quick Fix |
| No water | Low pressure | Check supply |
| Bad taste | Old filter | Replace filter |
| Leakage | Loose pipe | Tighten connection |
| Slow flow | Blocked filter | Clean filter |
| Noise | Air or pump issue | Restart purifier |
1. Water Purifier Not Dispensing Water – Causes & Easy Fix
This is one of the most common RO water purifier problems. If your RO suddenly stopped giving water, here’s what might be wrong.
Possible Causes
- No input water supply
- Low water pressure
- Tank not filled
- Clogged filters
- Pump not working
- Airlock inside purifier
Solution
- Check water supply to purifier
- Ensure power supply is ON
- Wait 15–20 minutes for tank filling
- Check sediment filter blockage
- Restart purifier
If the problem continues, the RO membrane or pump may need replacement. If your purifier has completely stopped, check our detailed guide on water purifier not working causes and solutions.
2. Water Purifier Producing Sound or Humming – Reasons and Solutions
Don’t worry if your water purifier produces strange sounds. It happens in almost all homes in India.
Reasons
- Trapped air in purifier
- Loose connections of pipelines
- High pressure in pump
- Blockage in filter
- Problem with purifier pump motor
Solutions
- Power off and then power on the purifier
- Tighten loose connections
- Clean the pre-filter
- Check water pressure from source
- Allow purifier to operate for some time
If noise persists, the purifier’s pump needs repair or service.
For a detailed explanation of different sounds and fixes, read our complete guide on water purifier making noise.
3. RO Water Has Bad Taste – How to Solve Taste and Odor Problems
The water purified using any type of purifier should taste good. If RO water tastes bad, there are usually filter problems.
Reasons
- Used-up carbon filter
- Dirty purifier water tank
- Presence of bacteria
- Water becomes stagnant
- High TDS level
If your RO water tastes flat, bitter, or metallic, read our detailed guide on why RO water tastes bad and how to fix it quickly.
Solutions
- Change the used-up carbon filter
- Clean the purifier tank
- Run purifier for ten minutes
- Sanitize the purifier
- Check and balance TDS level
This is among the most common water purifier problems due to improper maintenance.
4. Water Purifier Leaking Water – Solve Leakage Problems
Leakage may cause damage to your kitchen and needs immediate attention.
Possible Sources of Leakage
- Joint of pipes
- Filter compartment
- Cap of RO membrane
- Valve of tank
- Input point
Solutions
- Switch off water source
- Loosen up all connections
- Fix broken pipes
- Use new O-ring if necessary
- Inspect filter compartment
5. Water Purifier Slow Water Flow – Possible Causes and Solutions
A slow flow of water from your purifier usually means there is some kind of blockage.
Possible Causes
- Blocked sediment filter
- Low input pressure
- Blocked RO membrane
- Tank pressure low
Solutions
- Replace sediment filter
- Examine input pressure
- Clean membrane
- Fill up tank
6. Water Purifier Is Not Switching On – Troubleshooting
In case your purifier is not switching on, there could be these reasons:
Possible Reasons
- No electricity
- Adapter/SMPS malfunction
- Faulty power wire
- Faulty internal wiring
Solution
- Power socket check
- Using other plugs
- Adapter replacement
- Reset the purifier
If the problem persists, you may have to get the SMPS changed.
7. RO Water Purifier Tank Is Not Filling – Causes And Solution
The tank is not filling up means that the water flow somehow has got obstructed.
Possible Reasons
- Insufficient water pressure
- Filter obstruction
- Pump problem
- Faulty auto-cutoff valve
- Clogged RO membrane
Solution
- Water pressure check
- Replace filters
- RO membrane flush
- Check pump
- Float valve check . For step-by-step troubleshooting, read our RO water purifier no water flow guide.
8. TDS Levels Excessively High Post-Purification
In the case that TDS levels remain high post-purification, the filter system is not functioning correctly.
Causes
- RO Membrane Expired
- Miscalibrated TDS Controller
- Open Bypass Valve
Solution
- Install New RO Membrane
- Calibrate TDS Controller
- Close Bypass Valve
9. Auto Shut-Off Feature of Your Purifier Malfunctioning
When your purifier runs without stopping, you will have this problem.
Causes
- Malfunctioning Auto-Shut Off Valve
- Low Pressure in Tank
- Stuck Float Valve
Solution
- Pressure Check in Tank
- Check/Replace Float Valve
- Check/Replace Shut-Off Valve
10. Water Purifier Tank Overflow Problem
Overflowing water can waste water and damage surroundings.
Causes
- Damaged float valve
- Faulty auto shut-off valve
Solution
- Replace float valve
- Replace auto shut-off valve
11. Water Purifier Pump Running Continuously
If the pump never stops, there is a pressure or filtration issue.
Causes
- Tank not filling
- Membrane blockage
- Low pressure
Solution
- Check tank
- Replace filters
- Flush membrane
12. Water Purifier Giving Very Less Water
Causes
- Low tank pressure
- Tank bladder damage
- Filter blockage
Solution
- Increase tank pressure
- Replace tank bladder
- Replace filters
13. White Particles in the Pure Water
Problem Causes
- Carbon dust
- Installation of new filter
- Faulty mineral cartridge
Solutions
- Purge purifier for 10 to 15 minutes
- Change cartridge
- Clean water tank
14. Vibrating Water Purifier
Problem Causes
- Vibrating pump
- Unsecured mounting
- Pipes against walls
Solutions
- Secure mounting
- Arrange pipes
- Use rubber supports
15. Excessively Slow Filling of Tank by Water Purifier
Problem Causes
- Poor pressure
- Worn-out membrane
- Blocked filters
Solutions
- Improve pressure
- Change filters
- Replace membrane
16. High Amount of Rejected Water from Water Purifier
Problem Causes
- Flow restrictor problem
- Worn-out membrane
- Poor pressure
Solutions
- Change flow restrictor
- Replace membrane
- Control pressure
17. Fault Indication on Water Purifier Display
Reasons
- Changing filter required
- Faulty sensor
- Pressure problem
Solution
- Restart the purifier
- Replace the filters
- Check the pressure
Tip from an Expert
The vast majority of water purifier problems occur due to overdue filter changes. Regular servicing will prevent about 80% of failures and ensure that your purifier lasts longer.
What are the Indicators That You Need to Call an Expert?
Get help in case of:
- Inoperable pump
- Water leakage in the purifier
- Electrical problem or PCB damage
- Membrane change required
How to Service Your Purifier to Prevent Failures
- Sediment filter – replacement every 3-6 months
- Carbon filter – replacement every 6 months
- RO membrane – annual replacement
- Purifier tank – cleaning every 3 months
- TDS monitoring
- Service purifier periodically
Conclusion
Most water purifier problems have an easy solution if one knows the problem. Slow water flow, unpleasant water odor, leakage, and loud noises are some of the common problems that require regular checks on the filters, pressure, and connections.
The best thing to do to prevent water purifier issues and enjoy healthy water is by performing routine maintenance.
FAQs
1. My RO water purifier is not giving water, why?
Water purifiers are not giving water because of low water pressure, blocked filters, or an empty water tank.
2. How often should I replace water purifier filters?
Replace sediment filter after every 3-6 months, carbon filter after 6 months, and RO membrane after a year.
3. Why does purified water have a bad smell?
Bad-smelling water comes from expired filters and contaminated storage tanks.
4. Why is my RO water purifier wasting water?
RO water purifiers waste excess water because of a malfunctioning flow restrictor or damaged membrane.
5. Can I repair my water purifier alone?
Yes, one can solve simple problems like leakage and filter replacements without contacting a technician.
