As a key equipment for simulating complex environments, the high and low temperature damp heat aging room, once malfunctioning, will directly affect the testing progress and accuracy of results. There are various types of faults, and it is necessary to start from the core system and carefully investigate them one by one in order to accurately locate and effectively solve the problem.

First, let's take a look at the abnormal temperature situation. If the temperature rises slowly or fails to meet the standard, priority should be given to inspecting the heating tube. After long-term use, the heating wire may break, and a multimeter can be used to check for continuity; If there is current passing through but no heat is generated, it is highly likely that the heating tube is damaged and needs to be replaced with a new product of the same specification in a timely manner. Temperature control instruments often have problems, and calibration deviations can cause the set values to deviate from the actual values. By comparing the readings with standard thermometers, it is necessary to recalibrate or even replace the instruments if necessary. The malfunction of the circulating fan cannot be ignored. It is responsible for evenly distributing the air inside the box. If it stops running or has a slow speed, heat accumulation will occur locally, causing a large temperature difference. Check the circuit, motor, and belt, repair or replace damaged parts.

Poor cooling is also a thorny issue. The compressor can be called the heart of refrigeration. If the pressure is too low, it indicates insufficient refrigerant or pipeline leakage. Before injecting an appropriate amount of refrigerant, it is necessary to find the leakage point and repair the welding; Blockage of the filter can hinder the flow of refrigerant, but removing it for cleaning or replacing it can restore its smoothness; Severe dust accumulation in the condenser can affect heat dissipation efficiency. Regularly clean the dust between the fins to ensure good heat dissipation performance and help the compressor operate efficiently.

In terms of humidity, the inability to humidify often stems from the failure of the water pump. Wear and tear of the water pump impeller and burning of the motor can cause interruption of water supply. Listen to the sound to determine if the operation is normal, and disassemble, repair or replace it directly; The water level float ball control fails, either stuck or damaged, resulting in continuous water inflow or water shortage. Adjust the position or replace the float ball component; Lack of water in the wet cloth sink can also result in insufficient humidification. Check the opening and closing status of the water replenishment valve and whether the water pipe is bent or blocked. However, dehumidification is difficult due to the excessive frost on the dehumidification evaporator, which hinders air circulation. If the defrosting timer function is abnormal, manually force defrosting and then check the relevant circuit components.

Frequent chaos in the control system can also trigger a chain reaction. Program disorder leading to instruction errors can sometimes be resolved by restarting the device or updating software versions; The relay contacts are stuck, causing the switch to lose control. Replace the relay stability control circuit to ensure continuity; The accuracy of the sensor decreases and the feedback signal is distorted. Use precision instruments to calibrate the sensor, and replace it if the deviation is too large to ensure accurate parameter acquisition.

Daily operation and maintenance are indispensable. Check the appearance of each component for any abnormalities before starting up daily; Clean the impurities in the water tank and wipe the inside and outside of the box every week; Monthly inspection of the tightness of electrical wiring terminals and lubrication of fan bearings; Quarterly comprehensive maintenance, deep cleaning of condensers, and calibration of instruments and meters.

In the face of high and low temperature damp heat aging room malfunctions, calmly analyze the status of each system, follow the above key points for troubleshooting and repair, supplemented by daily careful maintenance, in order to ensure the long-term stable operation of the equipment and build a reliable barrier for product development and quality testing.