Some common faults and troubleshooting methods of high and low temperature humid heat box:

1. In the high temperature test, if the temperature change cannot reach the test temperature value, the electrical system can be checked and the faults can be eliminated one by one. If the temperature rises very slowly, check the air circulation system to see if the regulating damper of the air circulation is opened normally. Otherwise, check whether the motor of the air circulation is running normally. If the temperature overshoot is severe, the PID setting parameters need to be set. If the temperature rises directly and the over temperature is protected, the control instrument must be replaced if the controller fails.

2. When the equipment suddenly fails during the test operation, the corresponding fault display prompt and audible alarm prompt will appear on the control instrument. The operator can quickly check the type of fault according to the chapter of troubleshooting in the operation and use of the equipment, and then ask the professional to quickly remove the fault to ensure the normal test. Other environmental test equipment in use

3. If the low temperature can't reach the test index, then you should observe the change of temperature, whether the temperature drops slowly or the temperature rises after reaching a certain value. For the former, you should check whether the workroom is dried before the low temperature test, and then put the test sample into the workroom for further test after the workroom is kept dry. Whether the test sample in the workroom is placed too much , so that the air in the studio can not be fully circulated. After the above reasons are eliminated, it is necessary to consider whether it is a fault in the refrigeration system. In this way, professional personnel should be invited for maintenance. The latter phenomenon is caused by the poor use environment of the equipment. The environmental temperature and location (the distance between the box and the wall) of the equipment shall meet the requirements (specified in the equipment operation instructions).

4. In the wet and hot test, the actual humidity will reach 100 % or the actual humidity is quite different from the target humidity, the value is much lower. The former phenomenon: it may be caused by the drying of gauze on the wet ball sensor, so it is necessary to check whether the water in the water tank of the wet ball sensor is short of water. The water level in the water tank is automatically controlled by a water level controller, and check whether the water supply system of the water level controller is available The water supply is normal, and whether the water level controller works normally. Another possibility is that the wet ball gauze will harden due to the long use time or the purity of the water supply quality, which will make the gauze unable to absorb water and dry. As long as the gauze is replaced or cleaned, the above phenomena can be eliminated. The phenomenon of the latter is that the humidification system does not work. Check the water supply system of the humidification system, whether there is a certain amount of water in the water supply system, whether the water level control of the humidification boiler is normal, and whether the water level in the humidification boiler is normal. If all of the above are normal, it is necessary to check the electrical control system, which should be repaired by professional maintenance personnel.

Shenzhen Lianxin testing equipment Co., Ltd. (hereinafter referred to as "Lianxin Testing Co., Ltd") and Hong Kong Lianxin testing Limited (hereinafter referred to as "Lianxin Testing Co., Ltd") are global high-tech enterprises specializing in research, development, production and sales of wire and cable, mobile phone and environmental testing equipment. With excellent working environment and advanced production equipment, we have introduced a group of high-quality knowledge-based technicians and sales elites, which has laid a solid foundation for the rapid development of the company.