1, LED constant temperature and humidity test chamber In the high temperature test, if the temperature change does not reach the test temperature value, you can check the electrical system, remove the fault one by one. If the temperature rises very slowly, it is necessary to look at the air circulation system and see if the adjustment baffle of the air circulation is normally open. Conversely, check whether the motor operation of the air circulation is normal. If the temperature overshoots badly, then you need to set the PID setting parameters. If the temperature rises directly, over-temperature protection, then the controller fails and the control instrument must be replaced. 2. When the LED constant temperature and humidity test box suddenly fails during the test operation, a corresponding fault display prompt appears on the control instrument and there is a voice alarm prompt. The operator can quickly check which type of fault belongs to in the troubleshooting chapter of the operation of the equipment, and then the professional can quickly eliminate the fault to ensure the normal operation of the test. Other environmental test equipment will have other phenomena in use, it must be specific phenomena, specific analysis and exclusion. The environmental test equipment shall also be regularly maintained. The condenser of the refrigeration system shall be regularly cleaned. The oil shall be lubricated according to the instructions for the moving parts, and the maintenance and inspection of the electrical control system shall be conducted. These tasks are indispensable. 3, LED constant temperature and humidity test box low temperature can not reach the test index, then you have to observe the temperature changes, the temperature drop is very slow, or the temperature rises after a certain value of the temperature trend, the former must check, Whether the studio is to be dried before the low-temperature test, so that the studio is kept dry, and then the test sample is put into the work chamber for further testing. The test sample in the work chamber is placed too much, so that the wind in the work chamber cannot be fully cycled. After eliminating the above reasons, it is necessary to consider whether it is a fault in the refrigeration system. In this case, it is necessary to inquire the professionals of the company's manufacturers to perform the inspection. The latter phenomenon is caused by the poor use environment of the equipment. The temperature of the equipment and the location of the equipment must meet the requirements. 4, LED constant temperature and humidity test chamber in the damp heat test, the actual humidity will be achieved or the actual humidity and the target humidity difference is very large, the value is much lower, the former phenomenon: may be caused by dry gauze wet bulb sensor, that It is necessary to check whether the water tank in the wet ball sensor is short of water. The water level in the water tank is automatically controlled by a water level controller. Check whether the water supply system of the water level controller is normal and whether the water level controller is working properly. Another possibility is that the wet ball gauze may cause the gauze to become hard due to the long use time or the purity of the water supply, so that the gauze cannot absorb the moisture and dry, and the above phenomenon can be eliminated only by replacing or cleaning the gauze. The latter phenomenon is mainly due to the fact that the humidification system is not working. Check the water supply system of the humidification system. Is there a certain amount of water in the water supply system? Is the LED constant temperature and humidity test box controlling the level of the humidifier boiler water level normal? Is the water level in the humidifying boiler normal? . If all of the above is normal, then check the electrical control system, which requires professional maintenance personnel to perform maintenance. 　　
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