Water purifier error RO often encountered when the system operates, below are some causes and solutions:
| Featured | Reason | Handle |
| The system does not start after pressing Start | 1. Faulty circuit, blown fuse, wire source lost connection 2. Thermal protection element 3. Lack of water pressure | 1. Check fuses and circuits 2. Reposition the thermal protection element 3. Check the water supply |
| Input coil no open after power on | 1. Broken wire 2. Faulty coil 3. Coil loop | 1. Connect the wires 2. Replace coil, change ring |
| Pump runs but not enough Rated power | 1. Opposite direction of rotation 2. Filter core is clogged 3. Air in the pump 4. Drain valve opens | 1. Reconnect the wire 2. Clean or replace the core 3. Push the air 4. Adjust pressure after discharge |
| Pump makes noise when increasing pressure | 1. Control coil or circuit2. Mechanical coil error | 1. Check and replace the coil or electric circuit 2. Replace or repair the coil |
| Stopped due to lack of pressure | 1. Lack of source water 2. The core is clogged 3. Pressure adjustment error while discharging | 1. Check the active water pump move or not 2. Clean or replace the core 3. Adjust the pressure valve, keeping the pressure down 1.4 kgf/cm2 |
| The wastewater pressure ratio is incorrect | 1. Leaking pipes 2. None of the discharge coils trip | 1. Check the tube 2. Check and replace the discharge coil |
| Not enough pressure | 1. Pressure test tube is clogged 2. Vapor in the test tube 3. Pressure gauge error | 1. Check the tube 2. Push up steam 3. Replace pressure gauge |
| Poor water output | Dirty or clogged membrane | Wash the membrane with chemicals |
| Productivity is poor | 1. Dirty membrane 2. Supply water temperature changes | 1. Wash the membrane with chemicals 2. Make the temperature suitable |
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