10+ Simple Ways to Repair RO Water Purifiers at Home
Note: You have clearly understood the cause and how to fix it at home but it does not improve, you can find a reputable repair unit or buy a new hot and cold water purifier , RO water purifier to ensure no interruption during use!
1. How to fix slow water purifier
Reason
Usually, the water purifier shows signs of slow flow because the filter core or RO membrane is clogged, the booster pump is weak, the pressure tank does not have enough pressure, or the water supply is weak and there is little input water.
How to fix slow water purifier flow error
In this situation, you can refer to the following way to repair the water purifier:
Check the water source
You need to check again to see if the water source is leaking somewhere? If you detect signs of water leakage in the pipe or faucet leading to the filter, you need to replace the pipe or faucet immediately.
Replace booster pump
If the water inlet is still stable, you should check the booster pump to see if there is a fault here. The way to check the pump is to remove the connector right in front of the pump, then use your finger to cover the pump head to see if there is suction? If the suction is weak or there is no force, it means the pump is broken and needs to be replaced.
Water supply, booster pump, filter core and pressure tank are the locations that need to be checked and fixed when you notice signs of slow water flow from the water purifier.
Replace filter core/RO membrane
When you suspect the cause is the filter core or RO membrane, you need to pay attention to whether the membrane/core has expired. You need to replace these parts according to the manufacturer's recommendations (core number 1 should be replaced after 3-6 months, cores number 2 and number 3 should be replaced after 6-9 months, and the RO membrane should be replaced after 18-24 months). In case of new use, remove each filter cup in turn to check which core is clogged with dirt and then replace that core. If both the RO membrane and core are still clean, check other parts of the machine.
Check the filter cup
You need to determine if there is any leakage at the connection between the filter cups. If so, tighten the valves or replace the tape to stop the water from flowing out.
Pump pressure tank/ Replace new pressure tank
If the pressure tank does not have enough pressure (< 0.4 kg/cm2), try pumping the pressure tank. Usually, there will not be a pressure tank pump available in households. You can remove it and take it to an electrical repair shop and ask them to pump it for you. After pumping and reinstalling it in the machine, if you see that the slow water flow does not improve, you should buy a new pressure tank to replace it.
SEE MORE: Mutosi hot and cold water dispenser
2. How to fix a water purifier that won't run
Reasons why the water purifier is turned off and not running
The water purifier not running may be due to a power outage or a loss of water supply to the machine. It may also be due to a broken low pressure valve, a locked pressure tank valve, a loose connection between the internal components of the machine, a clogged filter core or RO membrane, a weak/broken booster pump, or a burnt power supply.
How to fix
In this situation, you can apply the following method to fix the water purifier not running:
Check the power supply to the machine
You need to determine if the power supply to the machine is stable, the power cord is working well and the plug is secure. If you notice any abnormalities, fix that location. For example, if the plug is loose, plug it in firmly, if the power cord is broken, replace it with a new one, etc.
Checking the power source and re-plugging the filter is the first step you need to do when you find that the water filter is not working.
Check the water source
If the water supply system in the area is cut off, you should temporarily turn off the purifier and wait until the water supply line is working. If the water supply to the machine is cut off due to a clogged pipe or faucet, it needs to be cleaned or replaced.
Replace low pressure valve
The low pressure valve plays the role of turning on/off the power supply to the machine, so it directly affects the operation of the filter. In case you plug in the power, check the filter core, the filter membrane is still clean but the machine does not run, there is a high possibility that the valve is broken, causing the power in the machine to be cut off. In that case, remove the old valve and replace it with a new one.
Replace the power supply
If you suspect that the power adapter is burned, you can use a voltage and current meter to check. If you do not have this device available, you can remove the adapter, then plug it in idle mode (plug it directly into the power source, not into the filter) for 10 - 20 seconds. Then, unplug the adapter from the power source and rub the two ends of the wire together. If you see sparks, it means the power source is still good. If there are no sparks, it means the power source is broken and needs to be replaced.
In addition to the above situations, you also need to note the following cases:
- Replace the filter core/RO membrane when the filter core or membrane is clogged or expired.
- Replace the pump if it shows signs of weakness or is burned or damaged.
- Check the pressure tank valve to see if it is locked, if so, unlock the valve.
- Replace the pressure tank if it is leaking or damaged.
See more details at: Detailed instructions on how to fix from AZ when the water purifier is not running
3. How to fix RO water purifier that produces a lot of waste water
Reason
Water purifiers that discharge a lot of water continuously may be due to one of the following reasons: the RO filter is damaged, the manual drain valve is always open, the electronic valve is damaged, the pressure tank is damaged, or the pump is weak or burnt.
How to repair RO water purifier that produces waste water much
To fix this problem, you need to determine the exact cause to come up with a suitable solution and how to repair the water purifier. Specifically:
Replace RO membrane
First, you need to lock the pressure tank of the filter, then remove the water supply line from the RO membrane to the function core number 5. Next, open the faucet and use a cup to collect both the clean water and waste water lines. If you see that the clean water and waste water are measured in a ratio of 1:3, the RO membrane is damaged. At that time, you need to replace the new RO membrane for the machine.
When you see the machine continuously discharging wastewater, you need to check the RO membrane to see if it is clogged and needs to be replaced.
If the error is not due to the RO membrane or after replacing the RO membrane the machine still does not operate normally, try checking and fixing the following parts:
- Tighten the manual drain valve by adjusting so that the hand is perpendicular to the valve.
- Replace the solenoid valve for the filter if the solenoid valve is damaged.
- Replace the pressure tank when it is leaking or damaged.
- Replace the pump when the pump force is weak or there is no more suction at the pump head.
See more at: Detailed summary of ways to fix water purifiers that produce a lot of wastewater
4. How to fix a water purifier that does not produce water
Reason
The water purifier not producing water can come from one of the following causes: clogged filter cores, broken high pressure valve, broken low pressure valve, pressure tank out of compressed air, clogged water faucet, burnt out pump, broken solenoid valve or air leak in the purifier, etc.
How to fix
When you encounter a situation where the filter does not produce water, you should:
Replace filter
Remove each cartridge from the cup and check for dirt. If one cartridge is clogged with residue, replace it. If the cartridges are clean, check the other parts.
If the filter does not produce water due to a clogged filter, you need to replace the filter immediately to fix this problem.
Replace new high pressure valve
The high pressure valve can be damaged when it opens and closes too frequently over a long period of use. At that time, it will not be able to perform the function of energizing to start the water pump for the filter. To determine whether the high pressure valve is damaged or not, close the pressure tank valve, then close the water tap and the drain valve. At this time, if the pump stops working by itself, it means the valve is still normal. On the contrary, if the pump is still running, it means the valve is damaged and needs to be replaced.
Replace new pressure tank
Use a pressure gauge to check the pressure tank. If the pressure in the tank is low <0.4kg/cm2, add more air to the pressure tank and install it on the filter. If the machine still does not run or the pump If the pressure tank does not increase, replace the pressure tank with a new one.
When all the above cases are eliminated, you should check and proceed with treatment in some other parts such as:
- Replace the filter pump if the pump is weak or no longer working.
- Replace the filter solenoid valve when the valve is broken.
- Release all air in the filter cores by turning off the power, closing the water taps and pressure tank valve, then releasing all air in the filter cup, then running the machine again.
For detailed information on each way to fix a water purifier that does not produce water, you can refer to: Simple solutions to the problem of a water purifier not producing water at home
5. How to fix a water purifier that won't shut off
Reason
The filter cannot automatically shut off due to a leaking water source, dirty filter cartridges, broken flow valve, weak pump, damaged low pressure valve, high pressure valve or one-way valve.
How to fix a water purifier that won't shut off
If you want to fix the filter not turning off automatically, you can follow these options:
Check the water source
When the input water is too weak, the machine will always be in a state of not being supplied with enough water to perform the filtration cycle. This causes the machine to continuously start the water supply pump, making the machine run continuously without being able to turn off automatically.
The cause of the problem is usually due to a leak in the water supply system or a clogged water pipe, reducing the water flow to the filter. When in doubt, check the connections, valves, and faucets of the external water pipes and observe if there is any water overflow under the water filter. If you find a problem at any location, fix it there.
Replace new filter for machine
The filter core is clogged due to dirt, preventing water from flowing through, reducing the filtration efficiency. The water tank is always not full, so the machine has to run continuously without stopping. In this case, remove each filter core to check if it is clogged. If so, replace it with a new one.
To fix the problem of the filter running continuously without stopping, you must ensure a stable water supply, filter core, high/low pressure valve, pump and flow valve are all in good working condition.
Replace new flow valve
A broken flow valve will cause a lot of wastewater to flow, reducing the pressure on the RO membrane, making it difficult for water to flow through. This makes the machine unable to filter water to fill the pressure tank, so it will have to run continuously. To determine if the flow is broken, check the wastewater flow to see if it is unusually high. If so, it means the valve is broken, you must replace it with a new one.
If you have followed the instructions above but the machine still cannot turn off automatically, try checking and handling other parts such as:
- Replace the filter pump if the pump is broken or weak.
- Replace high pressure valve for machine.
- Replace low pressure valve/one way valve.
Reason
Water purifiers make noise when running, usually because the machine is suffocated, damaged, the machine is not placed on a flat surface, the water source is not enough, the RO membrane is clogged, the mechanical valve is broken, the screws are loose, or the machine is degraded due to long-term use.
How to fix
To completely fix this situation, you can follow the steps below to repair the water purifier:
Check the water source
Weak water inlet causes the filter system to not be filled, easily creating gaps or interrupting the machine's operation. It also causes the pump to not have enough water to suck and push up the filter system, making it easy to make noise when running. Therefore, if you detect this situation, check your family's water supply system to see if there is any leakage or blockage so that it can be handled promptly.
In case the water supply system check shows no problem, you should determine other problems that can cause noise when the machine is running such as:
- Reinstall the filter cartridges or remove the RO membrane and reinstall it if the machine is suffocated.
- Replace the pump if it is weak or burned out.
- Place the water purifier in a suitable location, choose a flat, dry place.
- Replace RO membrane if it is dirty, clogged or expired (after 2-3 years of use)
- Tighten the screws of the machine.
- Turn off the power, restart it and then continue using the machine.
Once you have determined that the cause of the noise is a broken pump, you must replace the filter with a new pump to end this situation.
7. How to fix a leaking water purifier
Reason
Leakage of the filter is often caused by one of the following reasons: the water tap is tilted due to tightening the screws too much, the faucet lock is not properly fitted, the rubber gasket is misaligned, the joints between the wire and the filter system are loose, the core is clogged or the water pipe is broken or cracked.
How to fix
When you encounter a water leak in your water purifier, you can consider applying the following methods to repair the water purifier:
Check and tighten the faucet screw.
If the faucet joints or screws are loose or not properly closed, they can cause water to leak. If you see water coming out of these places, check them and tighten them properly.
Adjust the faucet stopper
The faucet should be in the correct position, horizontal. If it is not in the correct position, the faucet will not be closed tightly and water will still flow out. Check to see if the faucet is too high or too low, and adjust it immediately.
appropriate solution" src="https://storage.sudospaces.com/sudo-mutosi/uploads/media/xac-dinh-chinh-xac-vi-tri-ro.jpg" style="height:495px; width:954px" />
To fix the problem of water leakage in the filter, you need to determine the exact location of the leak to find the cause of the leak and the appropriate solution.
Check, adjust or replace new rubber gasket
Rubber gaskets help reduce friction between parts and ensure a tight seal to prevent water from leaking out. If the gasket is misaligned or bulging, it can lead to water leakage in the filter. When detecting signs of water leakage, remove the joint and check the rubber gasket. If the gasket is damaged, it should be replaced.
If the above cases are not the cause of the water leak, try checking in some other locations such as:
- Check and tighten joints or replace.
- Replace the filter core and rubber gasket at the filter cup connector
- Replace the machine's water line
8. How to fix a water purifier that leaks electricity
Reason
According to professional water purifier repairmen, the water purifier may leak electricity due to one of the following reasons: water line leak, loose wire in the machine, loose valve plug, broken power supply, machine not disconnecting, pump burned/broken or machine electrified (in hot and cold water purifiers).
How to fix
The situation of water purifier leaking electricity can be fixed as follows:
Check and replace water supply line
Leaking water can damage components and cause dangerous electrical leakage. If you detect an electrical leak, you need to observe whether the water supply system and the faucet system inside the purifier are leaking. If you find any, replace and reconnect the water supply line to the machine.
Use an electric tester to check and determine the exact location of the electric leak and then fix it.
Check and connect the wires
If the electrical wire inside the purifier is accidentally bitten by insects, it will cause an electrical leak and an electrical shock to the outside. At that time, you should temporarily turn off the power and check all the internal wire positions to see if there are any signs of a break or an open wire. If found, you need to remove the old wire and connect a new one.
In addition to the above two situations, you also need to pay attention to:
- Check and re-plug the connectors of the components inside the filter.
- Check and replace low pressure valve, filter source
- Check and reverse the plug and ground the machine.
For more detailed instructions, please refer to: Fixing water purifier leakage at home!
9. The water purifier is not running but the wastewater is still flowing.
Reason
The phenomenon of wastewater flowing continuously even when the filter is not working is due to a damaged solenoid valve/one-way valve or the filter has air blocking the mechanical valve.
How to fix
When you notice this phenomenon, you should handle it in the following way:
Replace new solenoid valve
A damaged solenoid valve will no longer be able to control the flow inside the filter, causing the wastewater to flow continuously. When suspecting a damaged solenoid valve, first check the wires leading to the valve joints to see if they are broken and then handle it. If the connecting wire is normal, remove the solenoid valve, take the two ends of the wire and lightly swipe them on the power adapter. If the valve does not make a clicking sound, it means the valve is burnt. At that time, you need to replace the new valve immediately for the machine to operate.
In case the filter continuously discharges wastewater due to a broken solenoid valve, you just need to replace the new valve to fix the problem.
Replace new one-way valve
A broken one-way valve is usually caused by a broken rubber gasket, which causes the valve to lose control of the wastewater line, causing water to flow continuously. When you suspect a broken one-way valve, remove it and check the rubber gasket. If the rubber gasket is normal, it means the valve can still be used, you just need to clean it. If you see that this gasket is broken, it means the valve is broken and you have to replace it with another one.
Drain all air from the filter cup, clean or replace the mechanical valve.
Prolonged air leakage can cause the mechanical valve to fail, making it unable to regulate the pressure to prevent water from entering when the system is full. At that time, water is continuously supplied even when the machine is not running and is discharged through the drain. Therefore, when you notice signs such as the pump running non-stop or the machine's drain line continuously flowing, it is highly likely that the mechanical valve is damaged.
In this case, first you should release all the air in the filter cup of the machine to make sure that the machine is not trapped. Then, remove the mechanical valve, clean it and reinstall it to see if the situation improves. If after cleaning the machine still continuously leaks water, you should replace the mechanical valve with a new one.
Read more in the article How to fix the error of the water purifier not running but the wastewater still flows for detailed instructions!
10. Water purifier has no water in the pressure tank
Reason
Normally, this situation occurs due to one of the following reasons: the filter core is blocked, the coarse filter core is blocked, the RO membrane is blocked, the pump loses pressure, the one-way valve is blocked/broken, the pressure in the pressure tank is too high, or the pressure tank is out of compressed air.
How to fix
To deal with this problem, you should follow these ways to repair the filter:
Air discharge in filter cores
To solve the air problem in the machine, you must remove the filter cores and fill them with water to release all the air. Then plug the machine back in to operate normally.
Air pressure that is too low or too high can prevent water from entering the pressure tank. In this case, you need to add more air or release some air from the tank.
Replace new filter
With the coarse filter cores when clogged or expired, you must replace them and cannot clean them. Normally, you should replace the core periodically according to the manufacturer's recommendations if the input water is quite clean and there is a general filter support. In case the input water is hard water, with a lot of dirt, you may have to replace the core sooner.
If after deflating the filter cup and replacing the new core, the machine still cannot supply water to the pressure tank, you should check and handle the following parts:
- Replace RO membrane if it is expired or clogged.
- Replace new power supply or repair/replace new pump if power supply/pump is damaged
- Replace new one-way valve
- Vent the pressure tank when the pressure is higher than 8psi
- Inflate pressure tank/replace tank if pressure is below 5psi
Details on how to fix the error are in the article: 7 Ways to handle a water purifier with no water entering the pressure tank 100% successfully .
The above article has shared some ways to fix water purifiers for common problems. In case you have tried to fix it but it is not effective, you should proactively contact Mutosi's Procare repair service via hotline 1900 633 865 for the best support. As a unit that gathers a team of highly specialized water purifier repairmen, Mutosi Procare is always confident to accompany and bring you the most thorough, quick and reasonable solution.
