Hi all,
I was taking a look at the attached circuit. It is the HMI that belongs to a commercial refrigerator. This is connected to a controller board that reads the switches and controls the LEDs. I can understand most of it, but I find difficult to understand how the controller board can read the Select Temp button, without activating the buzzer. Any ideas?
Regards,
Ivan
I was taking a look at the attached circuit. It is the HMI that belongs to a commercial refrigerator. This is connected to a controller board that reads the switches and controls the LEDs. I can understand most of it, but I find difficult to understand how the controller board can read the Select Temp button, without activating the buzzer. Any ideas?
Regards,
Ivan