Are you getting a slow flow of water through the faucet or no water from your reverse osmosis system? There are several probable reasons that can cause these problems. The slow flow through the faucet or no water can either be caused by clogged pre-filters, low air pressure in the water storage tank or crimps in the tubing. Do not panic if you experience this. Listed below are the probable causes and the solutions you can do to solve these problems.
Probable Causes and Solutions for No Water from your Reverse Osmosis System
- No water from your RO system could be due to incorrect pressure from the water tank.Resolve this matter by emptying the tank and set the pressure to 5 – 7 psi.
- The water supply may be turned-off. You need to pressurize the tank. Call the customer assistance of your RO manufacturer.
- The water tank is over pressurized.Examine the system tank. The RO system should have a 5 – 7 psi maximum pressure when empty
- A low water pressure can result to no water. The minimum pressure is 40 psi. Switch on the water supply to increase pressure.
- Check if the pre-filter is clogged or congested. Change the pre-filter is it is clogged.
- The reverse osmosis membrane is blocked or damaged.Change the membrane to resolve this problem.
- A crimped or folded RO line will result to no water from the RO system. Look for any creased or folded line and straighten it.
- Blocked or clogged post-filter will not yield water.Remove the blocked or clogged post filter to solve the no water problem.
- The ball valve of the RO system is closed.Open the ball valve of the RO system.
- The valve/restrictor valve is clogged or blocked.Change the valve/restrictor valve.
Probable Causes and Solutions for Slow through Faucet from RO System
- Check if the pre-filter is blocked. If it is, buy a new pre-filter and replace the old one.
- Examine if the post-filter is clogged. Replace the post filter if it is clogged.
- The slow flow can also due to the low pressure in the reverse osmosis water tank. To solve this problem, increase the RO pressure to the required psi, which is 5 – 7 psi.
- The incoming water pressure is low. The minimum water pressure is 40 psi. Replace the reverse osmosis membrane to increase the incoming water pressure
- A spoiled RO membrane can cause slow flow through the faucet. Observe a 4- to a 6-hour period to fill the RO system.
- A new system, membranes, and filters can cause slow flow through the faucet. The best way to solve this issue is to call the manufacturer’s Helpline and request for assistance.
To inspect if there is adequate supply of water on the pre-filter
- Shut the self-tapping valve.
- Take the tubing out from the first filter.
- Grasp the end of the tubing on top of a container.
- Open the valve slowly.
- This procedure should provide the first filter a good supply of water.
If the above steps did not produce adequate flow of water on the pre-filter
- Take the self-tapping valve out.
- Drill a 3-mm hole in the plastic tubing. Remember to close the main water supply to prevent the closing over of the bored hole by the self-tapping valve due to water pressure.
- Inspect the pressure in the pressure tank. The required pressure should be 8 to 12 psi. If the pressure is lower, use a bicycle or car pressure gauge to add pressure. (If the valve keeps on losing pressure or does not hold pressure, the bladder inside the valve is broken so you need to change the pressure vessel.)
Inspect the pump.
- Ensure that it is hooked up and that the power source and the fuse are working.
- Switch on the valve (located above the pressure vessel), then open the water tap.
- Allow the water to follow to check if the pump is working properly.
If the pump does not work after a few minutes, this could be due to defective pump and transformer, high-pressure switch, or low-pressure switch.
Perform the following to check which of the above parts are defective.
To check if the Pump and Transformer is working correctly
- Unfasten the top two filters.
- Check the power using a multi-meter. Take one end of the multi-meter and place it on the high-pressure switch terminal. Grab the other end and place it on the low-pressure switch terminal. Take the plastic covers out from the terminals to examine each terminal combination. The pump and transformer will work with a current that is at 20 – 30 volts, so make sure that you have this current. If there is no current, then your transformer is at fault.
To inspect the Low-pressure Switch
The low-pressure switch is actually a safety tool. Using a multi-meter, inspect the two terminals of the low-pressure switch. The switch will warn you if there is no water flow, which means that the water pressure is low. Alternatively, the low-pressure switch will stop the pump from working if water is not entering the switch to protect the pump.
To inspect if the water supply is entering the low-pressure switch
- Remove the plastic tubing found on the underside of the switch. If there is no water supply, inspect the water flow on the second filter.
- You may have to change your second filter if the water supply on the second filter is good, but the outgoing pressure is poor.
- The low-pressure is defective if there is good pressure on the first and last filter and if there is an open circuit on the switch.
To inspect the High-pressure Switch
- Connect the main water supply tubing to the high-pressure switch and turn the water on.
- Get the other end of the switch and press it with your thumb to build pressure.
- Place the multi-meter on the terminals. The pressure will be high if there is no current.
- Let go of your thumb to allow-pressure to drop. (You will see that no current will be recorded on the multi-meter.)
Troubleshooting no water from your reverse osmosis system or slow flow through the faucet is easy, so there is no need to panic. It is a matter of having a proper mindset. The above tips are very simple to follow. If all attempts proved futile, then you can call up the manufacturer and claim for warranty on the product.