RO Not Working? Fix These 7 Common Problems at Home
Low flow, leaking pipes, bad taste, beeping alarms â your RO is trying to tell you something. Here's exactly what each problem means, what you can fix yourself, and when to call KLICK INDIA.
Your RO purifier works silently every day â until one day it doesn't. Whether it's stopped producing water, leaking from under the sink, making strange noises, or just producing water that tastes off, every symptom has a specific cause. And many of them have a quick fix.
This guide breaks down the 7 most common RO problems in Delhi NCR homes, what causes each one, what you can safely try yourself, and what requires a trained technician from KLICK INDIA's repair team.
Quick Diagnosis Table
Not sure what's wrong? Start here:
| Symptom | Likely Cause | Fix Type |
|---|---|---|
| No water coming out | Low inlet pressure, clogged pre-filter, or empty tank | DIY First |
| Very slow flow | Saturated filters, failing pump, or partially blocked membrane | Call Technician |
| Water leaking from unit | Loose fittings, cracked tubing, or faulty tank valve | DIY First |
| Bad taste or smell | Expired post-carbon filter or contaminated storage tank | Call Technician |
| Continuous draining | Failed auto shut-off valve (ASO) | Call Technician |
| Beeping / alarm light | Filter life alert or UV lamp failure | Call Technician |
| Noisy motor / vibration | Air in the system, failing pump, or loose mounting | Call Technician |
Problem 1: No Water Coming Out
When your RO suddenly stops producing water, don't panic â the cause is often simple. Here's what to check first:
Common Causes:
- Inlet water supply is turned off or very low pressure
- Pre-filter is completely clogged with sediment
- Storage tank is full and the float valve has stopped the purification cycle
- Power supply issue (unit not switched on or adapter failure)
â Try Yourself
- Check inlet tap is fully open
- Verify power switch and adapter
- Draw water from tank â if tank was full, it may restart
- Check if supply pressure is low (common in summer)
â Call KLICK INDIA If:
- Unit is powered but still no output
- Pre-filter appears completely blocked
- Inlet pressure is normal but nothing helps
- Problem started after a power cut
Problem 2: Very Slow Water Flow
If your RO used to fill a glass in seconds but now takes minutes, this is a clear performance drop that needs attention. Slow flow is one of the top reasons Delhi NCR families call KLICK INDIA.
Common Causes:
- Sediment or carbon pre-filter saturated with contaminants
- RO membrane partially blocked (high TDS areas like Ghaziabad, Faridabad)
- Booster pump losing pressure or starting to fail
- Low inlet water pressure from the main supply
â Try Yourself
- Check if inlet supply pressure is adequate
- Note when filters were last replaced
- Check for any kinked pipes behind the unit
â Call KLICK INDIA If:
- Filters are over 4 months old
- Membrane hasn't been changed in 18+ months
- Low flow even with new filters
- Motor sounds strained or different
Problem 3: Water Leaking from the Unit
Water leaks from an RO unit can be minor â like a loose push-fit connector â or serious, like a cracked membrane housing. Identifying the source is the first step.
Common Leak Points:
- Push-fit tube connectors that have come loose or are worn
- Filter housing O-rings dried out and cracked
- Storage tank bladder punctured or valve faulty
- Drain line connection leaking at the waste pipe
â Try Yourself
- Press tubing firmly back into push-fit connectors
- Tighten any visible loose fittings by hand
- Turn off inlet tap to stop the leak temporarily
- Dry the area and identify the exact source
â Call KLICK INDIA If:
- Leak is from the filter housing itself
- Water is dripping from the storage tank
- You can't locate the leak source
- Leak continues after tightening fittings
Problem 4: Bad Taste or Smell in Purified Water
Purified water should taste clean and neutral. Any unusual taste â metallic, salty, musty, or chlorine-like â means something is wrong with your filtration chain. This is not just a comfort issue â it's a health concern.
Common Causes:
- Post-carbon (taste) filter is expired and no longer active
- Storage tank has developed algae or biofilm inside
- RO membrane is degraded and passing dissolved solids
- New installation â initial flush was insufficient
â Try Yourself
- Flush 2â3 full tank-cycles of water and retest
- Check when post-carbon filter was last replaced
- Test output TDS with a TDS meter if available
â Call KLICK INDIA If:
- Bad taste persists after flushing
- TDS reading is above 150 mg/L after purification
- Tank hasn't been cleaned in over 1 year
- Smell is musty or like rotten eggs
Problem 5: RO Continuously Drains Water
All RO systems produce wastewater during purification. But once the tank is full, the Auto Shut-Off (ASO) valve should stop the process. If water keeps draining continuously, the ASO valve has likely failed â and you may be wasting hundreds of litres per day.
â Try Yourself
- Check if tank feels full by weight
- Turn off inlet tap overnight to reduce waste
- Listen for where the draining sound comes from
â Call KLICK INDIA â This Needs a Technician:
- ASO valve replacement (internal part)
- Check pressure in storage tank bladder
- Diagnose if membrane or high-pressure tubing is causing the issue
Problem 6: Beeping Alarm or Warning Light
Modern RO units from brands like Kent, Aquaguard, and Livpure have built-in indicators for filter life and UV status. Many people silence the beep with a button press and forget about it â but this can mean you're drinking water that's bypassing critical filtration stages.
What Different Alerts Mean:
- Filter Life Alert: Pre-filter or post-carbon filter has exceeded its rated life. Replace immediately.
- UV Lamp Alert: UV bulb may still glow but has lost germicidal effectiveness. Bacteria are no longer being killed.
- TDS Alert: Output TDS has crossed a threshold. Membrane may be failing.
- Low Pressure Alert: Inlet pressure is below the minimum required for purification.
â Try Yourself
- Identify which indicator is lit (check manual)
- Note how long the alert has been active
- Check if it's a filter life reminder or a fault alarm
â Call KLICK INDIA If:
- UV lamp needs replacement
- Filter or membrane replacement required
- Alert won't reset even after filter change
- Fault alarm is showing (not just a reminder)
Problem 7: Noisy Motor or Vibration
A properly functioning RO motor produces a low, steady hum. If you're hearing grinding, clicking, rattling, or a high-pitched whine, your pump or motor is likely under stress or beginning to fail.
Common Causes:
- Air trapped in the system after a filter change or dry run
- Booster pump bearing wearing out
- Unit not properly mounted â vibrating against cabinet walls
- Pump running dry due to no water supply
â Try Yourself
- Check if unit is securely mounted
- Ensure water supply is open and flowing
- Let the unit run briefly â air bubbles sometimes clear on their own
â Call KLICK INDIA If:
- Noise is grinding or clicking (pump bearing)
- Motor runs but no water is produced
- Noise started suddenly after a power cut
- Vibration is getting worse over time
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Frequently Asked Questions
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