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The high and low temperature alternating humidity chamber is unable to maintain a set constant temperature. What could be the cause? Let’s take a closer look at the possible reasons and solutions:
During high-temperature testing, if the temperature fails to reach the desired test value, it's important to first check the electrical system for any faults. You should systematically troubleshoot each component to identify and resolve the issue. If the temperature rises too slowly, the air circulation system may be at fault. Check whether the airflow control damper is functioning properly, and ensure that the fan motor is operating without issues. If the temperature exceeds the target, adjusting the PID parameters might help. In cases where the temperature spikes rapidly and triggers an over-temperature protection, the controller is likely malfunctioning, and you may need to replace the control unit.
When the low-temperature function of the chamber doesn’t meet the required test conditions, observe the temperature behavior. If the cooling process is slow or the temperature starts to rise after reaching a certain point, there are several factors to consider. First, make sure the chamber is completely dry before starting the low-temperature test. Any moisture inside can interfere with the cooling process. Also, check if the test samples are overcrowded, as this can block airflow and reduce efficiency. If these issues are ruled out, it may indicate a problem within the refrigeration system. In such cases, it’s best to contact the manufacturer’s technical support for professional assistance.
If the equipment suddenly stops working during a test, the control panel will usually display an error message and trigger an alarm. This helps the operator quickly identify the type of fault by referring to the troubleshooting section in the user manual. Once the issue is identified, a qualified technician can be contacted to resolve it promptly and avoid test interruptions.
Each environmental testing device may have unique issues depending on usage and conditions. It’s essential to address problems on a case-by-case basis. Regular maintenance is crucial for the long-term performance of the high and low temperature alternating humidity chamber. This includes cleaning the condenser regularly, lubricating moving parts according to the manufacturer’s guidelines, and inspecting the electrical control system periodically. These steps are vital to ensure consistent and accurate test results.