The phenomenon that the high and low temperature test chamber controller does not have a black screen is common. There are three possibilities. They are: 1, hardware failure, 2. software failure, and 3. compressor failure.

hardware malfunction

Among them, refrigeration components such as hardware compressors and solenoid valves that are most likely to be uncooled.

Then our users can roughly understand what is the hardware damage by listening and touching, if the compressor is faulty, the compressor's voice will be abnormal or no action does not start or the compressor itself is much higher than usual temperature, and the solenoid valve failure and Other cooling component failure users are not well mastered.

In addition, damage to the controller and damage to the electronic components that control the refrigeration system may also cause the phenomenon that the high-low temperature test chamber does not cool or cool.

There is also a kind of hardware failure when the energy matching of the high and low temperature test boxes is unreasonable. For example, if the heating power is installed too large, when the heating element is damaged, the cooling capacity and the heating capacity will not be directly matched. Although there is cooling capacity, it is indeed The amount of excessive heating is offset and the amount of heating is much higher than the amount of cooling. At this time, the temperature does not seem to fall.

Software failure

The soft fault mainly refers to the controller fault of the high and low temperature test box, including the internal parameters, the control of the control point of the solenoid valve and the IS control and output signals.

system error

The system failure refers to the initial design of the refrigeration system, which also includes the cooling of the high and low temperature chamber caused by the leakage of the refrigerant. The refrigerant leakage is often due to the jitter or cooling copper tube welding during the transport and high and low temperature test chamber operation. Process is not fine and so on.

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