Review on 🌡️ High Accuracy Electronic Thermostat Controller - DROK DC 6-30V 24V Digital Temperature Control Board: -50 to +110 Degree Celsius, LCD Digital Micro Temp Control Switch Module with Waterproof Sensor Probe by Saradhi Suter

I'm having trouble programming, I need help or more detailed instructions. If I set the temperature to 30 degrees and the second to 28 degrees, it doesn't work. Only when I set 30nc and the next one is 9c does it turn on. It used to work, now all 4 boards do. I made a mistake, could you please explain the shortcut in the menu what it is or email me to better understand the programming. I quickly press Set, then select c, then 30°C, and then the next setting 28°C. Now it works. The second must be set to 9ºC or 7ºC. Otherwise it won't work at 28°C. It won't turn on until 50°C. One of these errors burned my expensive electronic components because they were overheating. For some reason this module failed. I followed the instructions but was confused by the acronyms and abbreviations because I don't know what fear they mean. I have understood. Please help me. I've already lost 3000.00 gear. I no longer need to lose from overheating. I remove all of that and turn on the fans until the issue is resolved. When they worked, my system would cool down to 28 or 30 degrees Celsius even when it was 98 degrees Fahrenheit outside.