Commercial / Household water purifier (direct water dispenser) fault book

  The amount of water in the water purifier is small, the water purifier does not produce water, the noise of the water purifier has become louder, the water purifier ....... Susan summarized 25 common fault problems of water purifier for you, hand in hand to teach you how to troubleshoot, so you can easily deal with the water purifier, enjoy good quality water.

First, the high-pressure pump does not start, can not make water

1、Check whether the power is out and whether the plug is plugged in.

2, check whether the low-pressure switch is out of order, can not be connected to the power supply

3, check whether the pump and transformer short-circuit, or the whole machine line connection is wrong

4, check whether the high-pressure switch or water level controller is out of order, can not be reset

5, check whether the computer box is faulty (refers to the microcomputer type)


Second, the high-pressure pump works normally, but can not make water

1, high-pressure pump loss of pressure

2, the water solenoid valve has a fault can not enter the water (pure water and wastewater are not) (whether or not to reverse)

3、Pre-filter cartridge clogging (pure water and wastewater are not or wastewater is very small)

4, the backstop valve failure (no wastewater without pure water)

5, automatic flushing solenoid valve failure, can not be effectively closed (has been in the flushing state)

6, computer box failure can not close the backwash solenoid valve (has been in the flushing state)

7, RO membrane clogging


Third, the high-pressure pump does not stop

1, high pressure pump pressure is insufficient, can not reach the high pressure set pressure

2, the backstop valve is blocked, not out of pure water

3, high-pressure failure, can not jump

4, solenoid valve failure, can not be effectively opened


Fourth, the high-pressure pump stops, but the wastewater does not stop

1, solenoid valve failure, can not effectively cut off water

2, the computer box has a fault, can not close the solenoid valve (refers to the microcomputer type)

3, the inlet solenoid valve is not closed tightly, or install the reverse check valve back to the water caused by wastewater non-stop, the two cases can flow away from the wastewater is not the same, the first is tap water, after a pure water quality is not the same, the amount of water is not the same as the former is more rushed, the latter flow smaller, due to the check valve caused by the non-stop wastewater, you can turn off the bucket ball valve, wastewater water flow stops, you can judge.

4, solenoid valve failure, can not effectively cut off the water (check method: close the pressure drum ball valve, such as still waste water, can be concluded that the solenoid valve failure).

5, there is a situation, close the water solenoid valve and then open, if the machine is normal, it is determined that the water pressure is too high, resulting in the solenoid valve can not be closed flexibly, then consider adjusting the water into the total expanse of water in order to reduce water pressure.

6, the backstop valve pressure, wastewater is very small, check method: close the water solenoid valve, such as still wastewater, it can be concluded that the backstop valve pressure.


Fifth, after the water is full, the machine repeatedly jumps, the frequency is faster and can not be completely stopped

1, the original water pressure is insufficient

2, the backstop valve pressure relief, please replace

3, high-pressure switch or level switch failure

4, the system has a leakage phenomenon to check whether the components are leaking


Sixth, the pressure bucket is full of water, but pure water can not flow out

1、Pressure bucket air pressure drain

2, after the activated carbon blockage

3, pressure bucket ball valve is damaged


Seventh, the pure water flow is not enough


1, the first three filter cartridges clogged

2, high pressure pump pressure is insufficient

3, RO membrane clogging

4, the wastewater ratio is out of adjustment or wastewater valve is not closed tightly

5, after the active carbon clogging

6, pressure drum pressure or internal damage

7, the water temperature is too low

8, raw water pressure is too low


Eighth, what is the cause of leakage near the pipeline interface?
1, check whether the PE pipe head cut flat

2、Check whether the pipe plug is plugged in place

3、Check whether the screw is tightened


Nineth, what is the cause of abnormal noise during the operation of the water machine?

1、Check whether the check valve is out of order or aging.

2、Check whether the quality of the booster pump has problems.


Tenth, the water machine daily water production can not meet the requirements of the reason?

1, check whether the calculation is wrong

2、Check whether the pump pressure is in place

3、Check whether the wastewater valve or wastewater proportioner is too conductive

4、Check whether the water temperature is too low


Eleventh, thick water pipe no thick water discharge, the pure water and tap water TDS value is the same, why?

May appear in the product just installed, a wide range of dismantling the water machine, from the new installation may be the wrong high-pressure pump and RO membrane membrane shell between the water pipe directly to the rear of the activated carbon tee, so that the high-pressure pump out of the tap water directly into the water storage tank. Treatment: the correct connection.

XII. Why does the machine not work?

1、Check whether the power is out, whether the plug is inserted firmly

2、Check whether the low-voltage switch wiring plug is detached or malfunction to cause the power contacts can not be returned to the position

3、Check whether the connecting wires of each terminal are off

4、Check whether the tap water pressure is too low to cause the low pressure switch does not work.

Handling method:

1、Connect the disconnected plug

2、Replace the low pressure switch

3、Fit the disconnected connecting wire

Thirteenth, produced by the bad taste of pure water or odor, why?
1、Check the RO membrane filtration effect, whether to reduce or failure

2、Check whether the pure water and wastewater end of RO membrane shell is separated or cracked.

3, check whether the RO membrane rubber ring at one end of the appropriate size or broken

4, check whether the role of the rear active carbon is effective


Fourteenth, pure water and wastewater ratio is seriously out of proportion
1, check whether the flushing solenoid valve is damaged

2, check whether the wastewater proportioner is clogged or too conductive

3, check whether the RO membrane is clogged or serious decline in removal rate


Fifteenth, the machine does not stop flushing

Wastewater ratio failure or flushing the beginning is not tightened

Sixteenth, noise
1, check whether the raw water pipeline water, resulting in booster pump idling, resulting in water purifier noise

2, check whether the raw water is normal, if the towerless water supply, whether the water has gas

3, check whether the booster pump failure, excessive vibration, friction sound, etc.

4, check whether the water purifier placed firmly

5, check whether the water pipe is too long, the pump's vibration makes the water pipe knocking casing

6, check whether the hot water boiling caused by excessive noise

7, check whether the compressor is normal


Seventeenth, water leakage
1, check the water pipeline water purifier, find leakage points

2, check whether the small joint leakage

3, check whether the water dispenser leakage

If the leak is very small, it is not easy to check, you can use a dry Kleenex test

Eighteenth, not out of pure water
1, check the water dispenser piping, rationalize the water dispenser piping

2, check the water dispenser power supply, connect the water dispenser 220V AC, if the water dispenser input power is normal, check the transformer output voltage

3, check whether the high pressure switch or float switch failure, can not jump back

4, check the water inlet solenoid valve, whether it is normal to unscrew the solenoid valve outlet, turn on the power, check whether the water, such as no water, go to the next step in the test, open the raw water ball valve, test the reverse osmosis membrane before the cartridge is clogged, such as clogging replacement, if the water, the solenoid valve is damaged.

5, check whether the pressure after the booster pump pump pressure to meet the requirements if less than 0.3MPa need to be replaced!

6, open the reverse osmosis membrane pure water port, such as no water, reverse osmosis membrane damage

7, check whether the wastewater discharge is too large, so that pure, wastewater ratio imbalance

8, check whether the rear activated carbon cartridge is blocked


Nineteenth, TDS value is too high
1, the first test raw water TDS value, R / O membrane desalination rate of 96% or so

2, if the new replacement of the reverse osmosis membrane needs to run 20 minutes, and then measured

3, to confirm the storage of pure water in the barrel storage time is too long

4, such as the new replacement of the post activated carbon also needs to be rinsed

5, when measuring the quality of pure water, please measure from the reverse osmosis membrane pure water port

6, if the calculated desalination rate of RO membrane is less than 90%, measurement should be considered whether there is an internal leakage can be handled as follows: remove the RO membrane, the left side of the RO membrane there are two small waterproof rubber ring, you can wrap an appropriate amount of raw tape in the two small rubber ring, and then re-installed to measure.

7, RO membrane removal rate is reduced

8, RO membrane shell of pure water cracks, pure water and wastewater mixing

9, high pressure pump pressure is insufficient

10, raw water TDS value is too high

11, the pre-filter element is not regularly replaced

12, exclude the above reasons for the replacement of reverse osmosis membrane


Twentyth, the machine does not stop
1, high pressure switch damage

2, insufficient pressure booster pump

3, check valve blockage

4, computer box control failure

5, high pressure pump pressure is insufficient

6, pre-filter or RO membrane blockage


Twenty-first, booster pump leakage:
Booster pump head fixing screws loose or gasket aging


Twenty-second, the host start in the case of automatic flushing, the pump will move and stop:
Raw water pressure is insufficient or the first polypropylene fiber blockage caused by please install the press or replace the filter element


Twenty-third, the machine is in a state of shutdown, but the wastewater flow does not stop:
Water solenoid valve can not lock, please disassemble to check whether there are debris stuck or damaged


Twenty-fourth, direct drinking water is not pure:
1, RO membrane desalination rate is reduced or even failure

2, RO membrane tube of pure water and wastewater end is not strictly separated from the crack phenomenon

3, RO membrane rubber band end is too small or broken


Twenty-fifth, do not make water, and “flute - flute -” long alarm
1, water, electricity is normal

2, increase the pump to turn, there is no wastewater, if there is wastewater, water intake system, drainage system, no problem, the backstop valve stuck, no pure water out of the faucet; membrane is scrapped in advance, or has reached the end of its service life, over the water is not smooth or not water; other places are not blocked!

3, if there is no wastewater, check whether the solenoid valve into the water can not open, the water through the past; in addition to checking whether the cartridge has been blocked, to replace the period of time!

4, the pump does not turn, there is no water, check whether the cartridge is blocked, whether the motor is damaged

5, the pump has no pressure (the pump is also running)

6, the circuit is not normal check the circuit

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