Fault analysis of dehumidifier stopping after running for a while

In the use of dehumidifiers, we often encounter various faults. For general faults, dehumidifiers have self-diagnosis function, and alarm prompts are displayed on the display screen and corresponding fault indication codes are displayed. Through these codes, we can know what faults are, and then there are still some rare faults that are not prompted, which requires us to analyze according to experience.

For example, recently received the user's response, the dehumidifier automatically stopped after running for a few minutes. I don't know what the reason is, and how to diagnose this situation. The phenomenon of needles is now analyzed as follows:

1. Incorrect humidity setting: The operation of the dehumidifier is controlled according to the user's setting. When it meets the user's requirements, that is, the value set by the user, the machine will automatically stop. Therefore, when it is found that the dehumidifier will automatically stop after running for a few minutes, the first thing to check is whether the set value is higher than the environmental value. If the relative humidity of the environment is 50%, and the value set by the user is 60%, then after the machine runs, it is naturally judged that it has reached the target and automatically stopped.

2. Is the ambient temperature too high: If there is no problem with the humidity setting, then it is necessary to check whether the ambient humidity is too high. The operating environment of dehumidifier requires a certain temperature. The operating range of conventional dehumidifier is 5-38 degrees, and 38 degrees is the highest value. When the indoor ambient temperature is higher than 38 degrees, the machine will automatically protect itself and stop automatically.

3. Whether the compressor is short of fluorine (refrigerant). The working principle of dehumidifier is through the work of compressor, using the refrigerant in compressor to exchange heat with air. When the refrigeration capacity in the compressor is insufficient, the compressor will generate heat. At this time, if it is used for a long time, it will burn out the compressor. Generally, good compressors are equipped with overload protection, so the machine will automatically stop. The reason for fluorine shortage may be that the machine has been used for a long time, or there may be leakage points on both devices. At this time, it is necessary to check the leakage and replenish fluoride.

Through the above analysis, we don't have to be at a loss when we encounter this kind of fault again. Check one by one in order to find out the real cause of the automatic shutdown failure of dehumidifier.

Differences between different types of dehumidifiers

At present, there are two main types of dehumidifiers, which are divided into freezing dehumidifiers and rotary dehumidifiers. Freezing dehumidifier is widely used because of its refrigeration principle, mature technology, simple operation, assembly line production and affordable price. The process of rotary dehumidifier is complex, it needs to be customized in advance, and the finished product is high. At present, it is mainly used in special industrial environment, so the application market is relatively single. This paper mainly explains the characteristics of different types of dehumidifiers, which makes us more aware of the differences between them.

The freezing dehumidifier adopts the refrigeration principle, which sucks wet air into the machine, exchanges heat with refrigerant on the two devices, lowers the air temperature below the dew point, and moisture forms dew, which is separated from the air, and the dew is discharged into water, and the dry air is returned to the room after heat exchange. This is the dehumidifying principle of dehumidifier, which works repeatedly to recycle the humidity in the air to meet the control requirements. This is the whole dehumidification process of the freezing dehumidifier.

Many people simply take it literally, thinking that the freezing dehumidifier is cooling down, which will reduce the temperature in the air. Actually, it's not. The freezing dehumidifier only uses the refrigeration principle during dehumidification, and will recover the temperature after dehumidification. At the same time, due to the work of the compressor and the fan, heat will be generated, so the final wind will be slightly hot air, and the room temperature will increase by 1-2 degrees.

From the hard demand of industry to daily household, the application of refrigeration dehumidifier has been very popular, especially the conventional refrigeration dehumidifier. In addition to the conventional ones, there are also some customized non-standard frozen dehumidifiers, such as temperature-raising dehumidifiers, temperature-lowering dehumidifiers, high-temperature dehumidifiers, crane dehumidifiers, temperature-adjusting dehumidifiers, etc. These non-standard dehumidifiers can meet some special needs of users except dehumidification. If the user's room temperature is relatively high and it is necessary to reduce the indoor temperature while dehumidifying, then a cooling dehumidifier can be used. When materials or articles need to be dehumidified indirectly, high temperature contributes to the evaporation of water. Here, a temperature-rising dehumidifier or a high temperature-resistant dehumidifier can be configured.

Home dehumidifier, on the other hand, is mainly energy-saving and environment-friendly, with generally low machine power and environment-friendly refrigerant. Compared with a single industrial appearance, it is more diversified and beautiful, and meets different aesthetic needs on the basis of dehumidification.

The rotating wheel dehumidifier adopts the principle of moisture absorption and release by rotating the rotating wheel. During operation, the machine is divided into two zones, one is the treatment zone and the other is the regeneration zone. When the runner rotates through the treatment zone, it absorbs the moisture in the air and rotates to the regeneration zone to release the moisture on the runner. Therefore, it can be reused to achieve the purpose of dehumidifier. Therefore, the dehumidification effect of the runner is determined by the quality of the runner. The moisture absorption and desorption characteristics of imported honeycomb ceramic fiber are obviously better than those of domestic products. At present, some professional rotary dehumidifiers adopt Swedish Proflute rotary wheel, which has strong moisture absorption and long service life.

The investment cost of the rotary dehumidifier is high, and the purchase cost of several cubic meters of space is tens of thousands of yuan. However, it can effectively solve the dehumidification scheme that other freezing methods can't do in places with normal temperature and low humidity, low temperature and low humidity, especially the air dew point can reach below -70℃ after being used in combination, and low-grade heat energy such as industrial waste heat, waste heat, solar energy and natural gas can be used as renewable energy, with no environmental pollution and low energy consumption. At present, domestic rotary dehumidifiers are mainly used in food, medicine, electronics, electrical appliances, chemical industry, national defense, printing and other industries with humidity requirements, which is far from ordinary household use.

Through the introduction of different types of dehumidifiers, we have a clearer understanding of their advantages and disadvantages, and we will be more comfortable in the choice of dehumidifiers in the future.

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