Summary of Water Purifier Faults

1、 The high-pressure pump does not start and cannot generate water
1. Check whether the power is cut off and the plug is plugged in
2. Check whether the low-voltage switch fails and cannot be connected to the power supply
3. Check whether the water pump and transformer are short-circuited or the wiring of the entire machine is incorrectly connected
4. Check whether the high-pressure switch or water level controller fails and cannot be reset
5. Check whether the computer box is faulty (referring to microcomputer type)
2、 The high-pressure pump works normally, but cannot produce water
1. High pressure pump pressure loss
2. The water inlet solenoid valve is faulty and cannot be fed (no pure water or waste water) (whether it is connected reversely)
3. The pre filter element is blocked (there is no pure water or wastewater or the wastewater is very small)
4. Check valve failure (with wastewater or without pure water)
5. The automatic flushing solenoid valve fails and cannot be effectively closed (always in flushing state)
6. The computer box is faulty and the backwash solenoid valve cannot be closed (it has been in the flushing state)
7. RO membrane clogging
3、 High pressure pump does not stop
1. The high-pressure pump pressure is insufficient to reach the high-pressure set pressure
2. The check valve is blocked and pure water cannot be discharged
3. High voltage failure, unable to take off
4. The solenoid valve fails and cannot be opened effectively
4、 The high-pressure pump stops, but the wastewater does not stop
1. The solenoid valve fails and cannot effectively cut off water
2. The computer box is faulty and the solenoid valve cannot be turned off (referring to microcomputer type)
3. The intake solenoid valve is not tightly closed, or the installation of a reverse check valve causes the wastewater to flow continuously. In two cases, the wastewater that can flow away is different. The former type is tap water, and the latter type is pure water with different water quality. The former type is relatively flush, and the latter type has a small flow rate. Due to the non-stop wastewater caused by the check valve, the ball valve of the water storage tank can be closed, and the wastewater flow can be judged to be stopped.
4. The solenoid valve fails and cannot effectively cut off water (inspection method: close the pressure bucket ball valve. If there is still wastewater, it can be determined that the solenoid valve fails).
5. In another case, close the water inlet solenoid valve and then open it. If the machine is normal, it is judged that the water pressure is too high, causing the solenoid valve to not be flexibly closed. Therefore, consider adjusting the water inlet valve to reduce the water pressure.
6. Check valve pressure relief, waste water is very small, inspection method: Close the intake solenoid valve, if there is still waste water, it can be determined as check valve pressure relief.
5、 After the water is full, the machine repeatedly jumps, with a faster frequency and cannot stop completely
1. Insufficient raw water pressure
2. Check valve pressure relief, please replace
3. Failure of high pressure switch or liquid level switch
4. If there is pressure relief in the system, check whether each component leaks water
6、 The pressure bucket is full of water, but pure water cannot flow out
1. The pressure in the pressure tank is discharged
2. Blockage of rear activated carbon
3. Whether the pressure bucket ball valve is damaged
7、 Insufficient pure water flow
1. The first three filter elements are blocked
2. Insufficient pressure of high-pressure pump
3. RO membrane clogging
4. The wastewater ratio is misadjusted or the wastewater valve is not closed tightly
5. Post activated carbon blockage
6. Insufficient pressure or internal damage in the pressure bucket
7. The water temperature is too low
8. Raw water pressure is too low
8、 What is the reason for water leakage near the pipeline interface?
1. Check whether the PE pipe head is cut flat
2. Check whether the pipe plug is plugged in place
3. Check whether the screw is tightened
9、 What is the reason for abnormal noise during the operation of the water turbine?
1. Check whether the check valve is malfunctioning or aging
2. Check if there is a problem with the quality of the booster pump
10、 What is the reason why the daily water output of the water turbine cannot meet the requirements?
1. Check whether the calculation is incorrect
2. Check whether the water pump pressure is in place
3. Check whether the waste water valve or waste water proportioner is excessively conductive
4. Check if the water temperature is too low
11、 There is no concentrated water discharged from the concentrated water pipe, and the TDS value of the purified water produced is the same as that of tap water. Why?
It may occur when the product has just been installed, the water machine has been extensively disassembled, or the water pipe between the high-pressure pump and the RO membrane housing may be mistakenly connected to the rear activated carbon tee after new installation, allowing the tap water from the high-pressure pump to directly enter the water storage tank. Handling method: Correct replacement.
12、 What is the reason why the machine does not work?
1. Check whether the power is cut off and whether the plug is firmly inserted
2. Check whether the low-voltage switch wiring plug falls off or fails, causing the power supply contact to fail to return to its original position
3. Check whether the connecting wires of each wiring terminal fall off
4. Check whether the water pressure of the tap water is too low to cause the low pressure switch to not work
Handling method:
1. Connect the detached plug
2. Replace the low voltage switch
3. Install the loose connecting wire
13、 The pure water produced has a bad taste or a peculiar smell, why?
1. Check whether the filtration removal effect of RO membrane decreases or fails
2. Check whether the pure water and wastewater ends of the RO membrane housing are separated or have cracks
3. Check whether one end of the RO membrane rubber band is properly sized or damaged
4. Check whether the effect of post placed activated carbon is effective
14、 Serious imbalance in the ratio of pure water to wastewater
1. Check whether the flushing solenoid valve is damaged
2. Check whether the waste water proportioner is blocked or excessively conductive
3. Check whether the RO membrane is blocked or the removal rate is severely reduced
15、 The machine is continuously flushed
The waste water ratio fails or the flushing start is not tight
16、 High noise
1. Check whether the raw water pipeline is cut off, causing the booster pump to idle, causing high noise in the pure water machine
2. Check whether the raw water is normal, and if it is supplied without a tower, whether there is gas in the water
3. Check whether the booster pump has faults, excessive vibration, friction noise, etc
4. Check whether the water purifier is firmly placed
5. Check whether the water pipe is too long, and the vibration of the pump causes the water pipe to strike the casing
6. Check for excessive noise caused by boiling hot water
7. Check whether the compressor is normal
17、 Water leakage
1. Check the water path of the pure water machine and find the leakage point
2. Check whether the small connection leaks water
3. Check the water dispenser for leaks
If the leakage is very small and difficult to check, you can use dry tissue paper to test it
18、 Not producing pure water
1. Check the pure water machine pipeline and straighten out the pure water machine pipeline
2. Check the power supply of the water purifier and connect it to 220V AC power. If the input power supply of the water purifier is normal, check the output voltage of the transformer
3. Check whether the high-voltage switch or float switch fails and cannot jump back
4. Check whether the intake solenoid valve is normal, unscrew the outlet of the solenoid valve, connect the power supply, and check whether there is water flow. If there is no water flow, proceed to the next step of testing. Open the raw water ball valve, and detect whether the front filter element of the reverse osmosis membrane is blocked. If there is a blockage, replace it. If there is water flow, the solenoid valve is damaged.
5. Check whether the rear pressure of the booster pump meets the requirements. If it is lower than 0.3MPa, it needs to be replaced
6. Open the pure water inlet of the reverse osmosis membrane, and if there is no water, the reverse osmosis membrane will be damaged
7. Check whether the discharge amount of wastewater is too large, resulting in an imbalance in the proportion of pure and wastewater
8. Check whether the rear activated carbon filter element is blocked
19、 TDS value too high
1. Firstly, detect the TDS value of raw water, and the R/O membrane desalination rate is about 96%
2. If the reverse osmosis membrane is newly replaced, it needs to run for 20 minutes before measuring
3. Confirm whether the storage time of purified water in the water storage tank is too long
4. If the rear activated carbon is newly replaced, it also needs to be rinsed
5. When measuring the quality of pure water, please measure it from the pure water inlet of the reverse osmosis membrane
6. If the desalting rate of the RO membrane is calculated to be lower than 90%, it should be considered whether there is internal leakage. The following treatment can be carried out: Remove the RO membrane, and there are two small waterproof rubber rings on the left side of the RO membrane. You can wrap an appropriate amount of raw tape inside these two small rubber rings, and then install the measurement.
7. Whether the removal rate of RO membrane decreases
8. The pure water port of the RO membrane housing has cracks, and pure water is mixed with wastewater
9. Insufficient pressure of high-pressure pump
10. TDS value of raw water is too high
11. The pre filter element is not regularly replaced
12. After eliminating the above reasons, the reverse osmosis membrane can be replaced
20、 Machine does not stop
1. High voltage switch damaged
2. Insufficient booster pump pressure
3. Check valve clogged
4. Computer box control failure
5. Insufficient pressure of high-pressure pump
6. Blockage of pre filter element or RO membrane
21、 Water leakage from booster pump:
The fixing screws of the booster pump head are loose or the sealing gasket is aged
22、 When the main engine is started and under automatic flushing, the pump will start and stop from time to time:
If the raw water pressure is insufficient or the first polypropylene fiber is blocked, please add a compressor or replace the filter element
23、 The machine is in a shutdown state, but the waste water flow does not stop:
The water inlet solenoid valve cannot be locked. Please disassemble it to check if there are any debris stuck or damaged
24、 Direct drinking water is not pure:
1. RO membrane desalting rate decreases or even fails
2. The pure water and wastewater ends of the RO membrane tube are not strictly separated and there are cracks
3. One end of the RO membrane rubber band is too small or damaged
25、 Do not make water, and "whistle whistle" will sound a long alarm
1. Whether water and electricity are normal
2. Increase the pump rotation to see if there is wastewater. If there is wastewater, there is no problem with the water inlet system or the drainage system, the check valve is stuck, and there is no pure water flowing out of the faucet; Whether the membrane is scrapped in advance, or has reached its service life, with poor or insufficient water flow; Is there any blockage in other places
3. If there is no waste water, check whether the intake solenoid valve cannot be opened or the water cannot pass through; In addition, check whether the filter element has been blocked and the replacement deadline expires
4. The pump does not rotate and there is no water. Check whether the filter element is blocked and whether the motor is damaged
5. The pump has no pressure (the pump is also running)
6. The circuit is abnormal Check the circuit

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