Common faults and maintenance methods of dehumidifiers

Dehumidifier common fault analysis and maintenance methods Dehumidifier dehumidifier is a household appliance in a humid environment, especially in the summer of the south, the rainy season is more, generally it is said to be down, or even for several days in a row, which will make the home particularly humid. If you don't use a dehumidifier, some of your furniture may become moldy;

After using it for a long time, the dehumidifier will fail, at this time, you should learn the common faults of the dehumidifier and repair it.

Analysis of common faults of dehumidifier and maintenance methods After the dehumidifier is repaired, it is powered on and turned on, and it is found that the noise increases and the dehumidification effect is very poor.

Check the fault: check that there is no abnormality in the structure of the dehumidifier, and the placement is stable; There is no abnormality in the shape of the evaporator, and there is no frosting phenomenon; Inspection noise mainly comes from the compressor; There is a lot of frost in the return pipe, and it is judged that the refrigerant charge is too much. Repair Method:

After properly draining some refrigerant, turn on the dehumidifier and return to normal.

The common faults and maintenance methods of dehumidifiers are as follows:

1. The dehumidifier cannot be started or does not respond

Check that the power outlet is supplying power normally.

Make sure the power cord is securely connected and not damaged.

Check and replace the battery, if applicable.

Check and clean the dehumidifier's filter, a clogged filter may cause the machine to not start properly.

2. The dehumidifier has no dehumidification effect

Make sure the humidity setpoint set by the dehumidifier is correct.

Check and clean the filter of the dehumidifier to prevent clogging and affecting the dehumidification effect.

Make sure the ambient temperature is within the proper operating range.

Check and empty the dehumidifier's water tank to make sure it is not full.

3. The dehumidifier is noisy

Inspect and clean the dehumidifier's fan and air duct to remove dust and debris.

Check that the dehumidifier is placed smoothly, and if not, you can adjust the position.

4. Water leakage of dehumidifier:

Inspect the drainage system to ensure that the drainage lines are clear.

Check and clean the dehumidifier's water tank and tank location.

Make sure the tank is installed correctly and is not loose or broken.

5. Peculiar smell of dehumidifier:

Inspect and clean the dehumidifier's filter and condenser to prevent dust and mold build-up.

It can be cleaned with a specialized dehumidifier cleaner.

If you encounter the above problems or other faults, it is recommended that you refer to the instruction manual of the dehumidifier to find a solution. If the problem cannot be solved, it is recommended that you consult a professional maintenance personnel or contact the dehumidifier manufacturer for repair service. During operation, be sure to disconnect the power supply and ensure safe operation.

Q: After trying the new machine overnight, the humidity does not drop but rises?

Answer: The machine has been tested and debugged before leaving the factory, so there will be water vapor left inside the machine next to the evaporator humidity sensor, as long as the high air gear is turned on for a few more days, the water vapor will evaporate.

2.Q: Noise issues.

Answer: There is a compressor and an exhaust fan in the dehumidifier, and there will be a certain sound when it is running. After special mute treatment, according to the national standard, the sound is about 30 decibels when running in low-grade wind (for sleep), which is equivalent to the lowest sound of ordinary fans, and the sound is about 40 decibels when running in high-end mode.

3.Q: How long does the refrigerant in a dehumidifier last?

A: Generally, it can be used for about 1-2 years, depending on the use.

4. Q: The humidity is very high, but the dehumidifier does not produce water.

Answer: It may be related to the ambient temperature, the temperature is too low, and the condensing dehumidifier cannot work; It is also possible that the compressor is leaking and not working.

The more expensive dehumidifiers are more durable, and the worse quality dehumidifiers will also have compressors that are not in use, the motherboard is broken, and so on. Like these failures, quality problems will be directly repaired, or used as scrap products.

Hope it solves your problem

There are many kinds of dehumidifiers, including common household dehumidifiers, swimming pool wall-mounted or floor-mounted dehumidifiers, and large three-in-one dehumidifiers, depending on the specific model.

The common faults of the dehumidifier look at the errors of different brands of machines**such as Oujing dehumidifiers, different errors** show different faults.

E1 means that the machine temperature sensor is damaged or damp, E2 means that the machine humidity sensor is damaged or damp, and Hi means that the humidity is too high, and the dehumidifier is working normally to dehumidify. This ** is humidity higher than 95%RH, there is no need to worry about the problem of the dehumidifier when it appears, it is normal, and after working for a period of time, it will return to the normal humidity display.

lo means humidity 35%rh, humidity is too low, dehumidifier is not working or machine is faulty cl means temperature is too low, temperature is lower than 5, machine is not working dehumidification ch means temperature is high, temperature is higher than 35, machine is not working dehumidification.

1. Ventilation system failure

a. Air inlet grid and air outlet grid: man-made damage or aging cracks. The air inlet or outlet is severely blocked.

bAir filter: blocked or damaged by dust.

c. Evaporator: Evaporator condenser fin dust accumulation. The surface of the evaporator freezes.

D: Fan motor: The capacitor is damaged. Fan motor shaft. The rotor and shaft are loose. The shaft is bent and deformed. The windings burned.

e Maple Leaf: The fixing screws are loose. The fan blades are deformed or damaged. The dust accumulation of the fan blades is serious, which seriously affects the air output. The fan blades of small dehumidifiers also have the phenomenon of jamming the fan blades due to serious dust accumulation.

2. Electrical system failure

a. The compressor and fan are not cut off. The switch is not closed. The socket is disconnected. The voltage is too low. The circuit breaker is disconnected. The fuse tube blew out.

b. The compressor does not rotate, and the fan ** starter fails. Capacitor failure. Overload protection.

c. The compressor and fan are all faulty in the refrigeration system.

3. Refrigeration system failure.

a. Total leakage of refrigerant.

b. Refrigeration system blockage: dirty blockage. Oil plugs. Weld plugging.

c. Excess refrigerant.

d. No displacement (failure) of the compressor

Dehumidifier is a common household appliance, and the common faults and maintenance methods are as follows:

Check that there is power at the electrical outlet.

Check whether the power cord of the dehumidifier is well connected.

Check that the control panel of the dehumidifier is working properly.

Check that the humidity setting of the dehumidifier is correct. Funny.

Check that the filter of the dehumidifier is clean.

Check that the compressor of the dehumidifier is working properly.

Check the dehumidifier's cold condenser for condensation or clogging.

Check that the base of the dehumidifier is stable.

Check that the dehumidifier's fan is clean.

Check if the compressor of the dehumidifier is working properly.

Check that the dehumidifier's water tank is installed correctly.

Check that the dehumidifier's water tank is full.

Check that the drain of the dehumidifier is not blocked.

If the above methods do not solve the problem, it is recommended to contact professional maintenance personnel for maintenance.

1. The dehumidifier stops soon after starting, and can only be started again after a long time, and the dehumidification effect is very poor.

Check the fault: (1) The wind speed of the measured tuyere is lower than the normal value; (2) Use a multimeter to measure the resistance value between the lead wires of the fan motor, and find that it is much lower than the normal value.

Maintenance method: According to the detection situation, it is judged that the winding coil of the fan motor is short-circuited between turns, resulting in the reduction of the fan speed and air volume. Replace with a new fan motor and troubleshoot.

Cause analysis: the compressor of the dehumidifier is a rotary compressor, with poor heat resistance, the speed of the fan motor is reduced, and the air volume is reduced, that is, the air volume flowing through the condenser is reduced, which causes the compressor discharge pressure to rise, resulting in compressor overheating protection (shutdown), and the compressor overheating can only be reduced to normal after a long time of cooling, so the compressor can be started again after a long time of cooling.

2. After the dehumidifier was used for more than a year, it was repaired once, and the test machine was normal at that time, and it was used again after a period of disuse, and it was found that the compressor and fan were normal, but the dehumidification effect was very poor, and there was very little water condensation in the environment with a relative humidity of 83% and a temperature of 12.

Check the fault: (1) the surface of the air filter and the evaporator condenser are very clean (2) there is no leakage of oil on the surface of the pipe (3) the capillary is frost near the evaporator, and it will be shut down soon, and after a period of time, the frost will melt away, and the compressor can run again. (4)) Wrap the capillary tube and the evaporator interface with a hot towel, and the dehumidification is normal.

It is judged to be ice plugging of the refrigeration system.