In our lives, we just know how to use refrigerated fresh -keeping cabinets and which foods are preserved, but they really know nothing about the failure of the cold -field fresh -keeping cabinet.Want to know what questions will appear in the cold field preservation cabinet ...
How to judge whether the cold field preservation cabinet failed
In our lives, we just know how to use refrigerated fresh -keeping cabinets and which foods are preserved, but they really know nothing about the failure of the cold -field fresh -keeping cabinet.Want to know what problems will occur in the cold field fresh -keeping cabinet? Which cold -field fresh -keeping cabinets are the most common? Below, I will introduce some of the cold field fresh -keeping cabinets to judge whether it is faulty! China
1. Power supply
The main failure of the thermostat is two types: frequent and often closed. These can be measured and accurately measured in time through the multimeter and thermometer. I personally think that the temperature control temperature parameters are drifting.The final discovery of the controller parameter drift was found to be a system failure; the main failure of thermal protection is the disconnection. Generally, the compressor is also burned at the same time when the heat protection failure is effective. Please avoid trouble.The resistance value is generally between 15Ω and 45Ω. The heavy hammer -type promoter needs to be tested up and forth up and forth. Generally, between 15Ω and 45Ω, in generalQuestion; The control system of the refrigerator is basically electronic temperature control now. Generally, the work of the refrigerator is controlled by three sensors and the main control board. The sensor is a resistance of a negative temperature coefficient.Sensor to form a basic control circuit. In terms of relatively prone problems, it is mainly on the main control board. There are fewer faults of the sensor. You can ignore it. Please pay attention to dealing with such a failure.Because the main control board is electronic control, it is easier to be short -circuited.
The main manifestation is that the display part is not bright. At this time, we need to check whether there is a failure of the power supply, check whether the power plug is poor and whether the fuse is melted.
2. System failure:
There are many system failures, mainly concentrated in several aspects of blocking (oil blocking, dirt, ice blocking), leakage (outer leakage, internal leakage)
3. Oil blocking:
Phenomenon: The refrigerator is not refrigerated or refrigerated, the exhaust temperature is not high, and the refrigerated temperature or freezing temperature decreases slowly.Mainly because of the design matching of the compressor and the refrigerator, the oil on the presses caused by the oil. After the oil enters the system, it cannot be returned to the pressure machine smoothly. Instead, it is left in the pipeline.Such problems cannot be seen from the appearance, and a comprehensive judgment needs to be made. The failure and the circuit failure in this area are very un stopping. The refrigeration effect is okay. This needs to be based on the temperature of the exhaust.The situation is judged with the temperature in the box.
4, noise abnormal:
The fresh -keeping cabinet is unobstructed. The fresh -keeping cabinet encountered the wall, and there is a foreign body to block at the bottom of the condensed wind.
4, dirt blocking:
Phenomenon: The main phenomenon is similar to the oil blockage. It is serious that it can block the pressing machine, so that the pressure machine cannot operate and the exhaust is not hot.It is mainly caused by impurities in the system. It is concentrated in the filter and capillary. Generally, it feels cold when touching the capillary tube with the hands. These problems are caused by several aspects.Time is too long and causes the pipeline to oxidize and produce impurities. The 2nd press is caused by too long and causes debris (this is generally a refrigerator after a few years); 3 refrigerants can also cause such problems.You only need to clean the system to eliminate such problems.
5. Ice blocking:
Phenomenon: The phenomenon of ice blocking is the most significant. The main manifestation is poor refrigeration. Checking too much memory in the box, whether it affects air circulation, the box door is not closed, the outside of the cabinet is poorly ventilatedOr there is heat source nearby.Open the door too frequently and so on.
6. Outside:
After the refrigerator leaks, it is first manifested in the cooling difference and non -stop. You can see oil pollution at the leakage point. To ensure the accuracy of judgment, you should use a very thin piece of paper to dip the oil stain because the oil can pass through the paper that can be passed through the paper.And other substances cannot penetrate (mainly rust -proof agent is similar to oil), which is a relatively simple method of judgment.It can also be detected by suppression.The leak is made of welding, and the injection can be taken when the detection is checked for 24 hours.
7. Internal leakage:
The phenomenon of leakage in performance is consistent, except that no oil pollution (except the rust -proof agent) can be seen outside, and the exhaust is not hot. This requires us to suppress the refrigerator segment for testing.We need to deal with the refrigerator and ensure the satisfaction of the user.(After the suppression, the various welding dials must be leaked, and the pressure gauge is checked whether the pressure gauge is leaked.) The suppression is basically 10-12 pressures in the evaporator.If the time is short, it is easy to make mistakes in judgment. Please pay attention to this.

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