Direct-flow Reverse Osmosis 4000 Series

The system may be running continuously. Restart the unit and, if the light remains red, contact customer service.

Make sure the cold water or main valve is fully open. Check the water pressure and ensure all pipes are connected properly.

4-in-1 filter AUT615 RO filter AUT620R400

Close the water valve and contact customer service. A component may be damaged.

Unmatched 70% recovery rate​ Produces 7 L of pure water from every 10 L input ​

Filter Life Indicator on the device: Constant blue light: The filter is within its lifespan. Flashing red light: The filter is nearing the end of its lifespan. Replace it soon. Red light on: The filter has expired. Replace it immediately

The surface of the RO membrane is coated with a layer of glycerin protective liquid before being installed into the machine. This glycerin protective liquid is food - grade glycerin, used to maintain the humidity of the filter element. Don't worry, it will slowly disappear with the discharge of water. You can discharge more water to rinse.​

The device is designed for municipal drinking water (tap water) meeting the applicable standards (e.g. EU 98/83/EC) and should not be used for water of biological risk or of unknown origin without prior cleaning/disinfection.

Rinsing water: 0.01 microns Drinking water: 0.0001 microns

Ensure the drain pipe is not blocked or bent. If the system uses reverse osmosis, check for proper installation.

Pre-filter element: Outer layer pleated PP cotton + inner layer activated carbon stick + non-woven fabric RO element: AQP water channel protein membrane element

The system operates at about 53 dB, which is similar to a normal conversation level.

Please contact customer service to check or replace the button module.

Check that the power cable is connected and the outlet has power.

Net weight: 7 kg Packaging weight: 10.3 kg

The bubbles in the water of a water purifier generally come from two aspects:​ The pores of coconut shell activated carbon contain a large amount of air. When a new filter element is immersed in water, this part of the air will gradually dissolve in the water, producing a large number of bubbles. The more bubbles there are, the higher the oxygen content.​ Municipal tap water is transported remotely through pipeline network pressurization. Pressurization will increase the solubility of air in water. When municipal water enters the booster pump of our water purifier for pressurization, the solubility is further increased. When the water flows out from the faucet, the pressure on the gas molecules disappears, and the pressure is released, so they expand into bubbles visible to our naked eyes, and then gradually disappear. This is a normal physical phenomenon and will not affect the drinking of pure water.

Initial salt rejection rate ≥90% (after 30 minutes of operation)

Check if pipes are bent or twisted. Make sure the filter is not clogged and replace it if needed.

Inlet pressure: 0.1~0.4 MPa Working pressure: 0.4~0.8 MPa

Replace the filter if it has reached the end of its life. Flush the system as recommended.

Pre-filter: 3650L (1 year) RO filter :11000L (up 3 years)

Possible causes and solutions: The filter may be clogged / exhausted → replace the filter cartridge. The water inlet pressure is low (<0.1 MPa) → consider installing a pressure booster. The valve or tap position is not fully open or the installation is incorrect → check the valve opening and correct connection.